Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsLinear ICsLinear IC - Op-amp Voltage feedback QFN 10 (2x2)

-140

-120

-100

-80

-60

-40

-20

0 20,000 40,000 60,000 80,000 100,000 120,000

Frequency (Hz)

A - dBc

2.7V

ADS8326

+In

-In

100

2.2nF

OPA835

S-

4.02k

2.5V5V

S+

REF

2.7V

SIG

1.35V

SIG

OPA835

OPA2835

www.ti.com

SLOS713E –JANUARY 2011–REVISED JULY 2013

Ultra Low-Power, Rail-to-Rail Out, Negative Rail In, VFB Op Amp

Check for Samples: OPA835, OPA2835

FEATURES

DESCRIPTION

Fabricated using the industry-leading BiCom-3x

• Ultra Low Power

(SiGe complimentary bipolar) process, the OPA835

– Supply Voltage: 2.5 V to 5.5 V

and OPA2835 are single and dual ultra low-power,

– Quiescent Current: 250 µA (typ)

rail-to-rail output, negative rail input, voltage-feedback

operational amplifiers designed to operate over a

– Power Down Mode: 0.5 µA (typ)

power supply range of 2.5 V to 5.5 V Single Supply

• Bandwidth: 56 MHz

and ±1.25 V to ±2.75 V dual supply. Consuming only

• Slew Rate: 160 V/µs

250 µA per channel and a unity gain bandwidth of 56

MHz, these amplifiers set an industry leading power-

• Rise Time: 10 ns (2 V

STEP

)

to-performance ratio for rail-to-rail amplifiers.

• Settling Time: 45 ns (2V

STEP

)

For battery powered portable applications where

• Overdrive Recovery Time: 195 ns

power is of key importance, the OPA835's and

• SNR: 0.00015% (–116.4dBc) at 1 kHz (1 V

RMS

)

OPA2835's low power consumption and high

• THD: 0.00003% (–130 dBc) at 1 kHz (1 V

RMS

)

frequency performance offers designers performance

versus power not attainable in other devices. Coupled

• HD

/HD

: –70 dBc/–73 dBc at 1 MHz (2 V

)

with a power savings mode to reduce current to <1.5

• Input Voltage Noise: 9.3 nV/√Hz (f = 100 kHz)

μA, the device offers an attractive solution for high

• Input Offset Voltage: 100 µV (500 µV max)

frequency amplifiers in battery powered applications.

• CMRR: 113 dB

The OPA835 and OPA2835 are offered in following

• Output Current Drive: 40 mA

package options:

• RRO – Rail-to-Rail Output

• OPA835 Single: SOT23-6 (DBV), and 10 pin

WQFN (RUN) with integrated gain resistors.

• Input Voltage Range: –0.2 V to 3.9 V

• OPA2835 Dual: SOIC-8 (D), VSSOP (MSOP) -10

(5 V supply)

(DGS), 10 pin WQFN (RUN), and 10 pin UQFN

• Operating Temperature Range:

(RMC).

–40°C–125°C

The OPA835 RUN package option includes

integrated gain setting resistors for smallest possible

APPLICATIONS

footprint on a printed circuit board (≈ 2mm x 2mm).

• Low Power Signal Conditioning

By adding circuit traces on the PCB, gains of +1, -1, -

• Audio ADC Input Buffer

1.33, +2, +2.33, -3, +4, -4, +5, -5.33, +6.33, -7, +8

and inverting attenuations of -0.1429, -0.1875, -0.25,

• Low Power SAR and ΔΣ ADC Driver

-0.33, -0.75 can be achieved. See Application

• Portable Systems

Information section for details.

• Low Power Systems

The devices are characterized for operation over the

• High Density Systems

extended industrial temperature range –40°C to

• Ultrasonic Flow Meter

125°C.

OPA835 Related Products

DESCRIPTION SINGLES DUALS TRIPLES QUADS

Rail-to-Rail — OPA2830 — OPA4830

Rail-to-Rail, Low OPA836 OPA2836 — —

Power

Rail-to-Rail, Fixed OPA832 OPA2832 OPA3832 —

Gain

General-Purpose, High OPA690 OPA2690 OPA3690 —

Slew Rate

Low-Noise, DC OPA820 OPA2822 — OPA4820

Precision

Please be aware that an important notice concerning availability, standard warranty, and use in critical applications of

Texas Instruments semiconductor products and disclaimers thereto appears at the end of this data sheet.

PRODUCTION DATA information is current as of publication date.

Products conform to specifications per the terms of the Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

Summary of content (52 pages)

PAGE 1
OPA835 OPA2835 www.ti.com SLOS713E – JANUARY 2011 – REVISED JULY 2013 Ultra Low-Power, Rail-to-Rail Out, Negative Rail In, VFB Op Amp Check for Samples: OPA835, OPA2835 FEATURES DESCRIPTION • Fabricated using the industry-leading BiCom-3x (SiGe complimentary bipolar) process, the OPA835 and OPA2835 are single and dual ultra low-power, rail-to-rail output, negative rail input, voltage-feedback operational amplifiers designed to operate over a power supply range of 2.5 V to 5.5 V Single Supply and ±1.
PAGE 2
OPA835 OPA2835 SLOS713E – JANUARY 2011 – REVISED JULY 2013 www.ti.com This integrated circuit can be damaged by ESD. Texas Instruments recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. ESD damage can range from subtle performance degradation to complete device failure.
PAGE 3
OPA835 OPA2835 www.ti.com SLOS713E – JANUARY 2011 – REVISED JULY 2013 SPECIFICATIONS: VS = 2.7 V Test conditions unless otherwise noted: VS+ = +2.7 V, VS– = 0 V, VOUT = 1 VPP, RF = 0 Ω, RL = 2 kΩ, G = 1 V/V, Input and Output Referenced to mid-supply. TA = 25°C. Unless otherwise noted PARAMETER CONDITIONS MIN TYP MAX UNITS TEST LEVEL (1) MHz C AC PERFORMANCE Small-signal bandwidth VOUT = 100 mVPP, G = 1 51 VOUT = 100 mVPP, G = 2 22.5 VOUT = 100 mVPP, G = 5 7.
PAGE 4
OPA835 OPA2835 SLOS713E – JANUARY 2011 – REVISED JULY 2013 www.ti.com SPECIFICATIONS: VS+ = 2.7 V Test conditions unless otherwise noted: VS+ = +2.7 V, VS– = 0 V, VOUT = 1 VPP, RF = 0 Ω, RL = 2 kΩ, G = 1 V/V, Input and Output Referenced to mid-supply. TA = 25°C.
PAGE 5
OPA835 OPA2835 www.ti.com SLOS713E – JANUARY 2011 – REVISED JULY 2013 SPECIFICATIONS: VS+ = 2.7 V (continued) Test conditions unless otherwise noted: VS+ = +2.7 V, VS– = 0 V, VOUT = 1 VPP, RF = 0 Ω, RL = 2 kΩ, G = 1 V/V, Input and Output Referenced to mid-supply. TA = 25°C.
PAGE 6
OPA835 OPA2835 SLOS713E – JANUARY 2011 – REVISED JULY 2013 www.ti.com SPECIFICATIONS: VS = 5 V Test conditions unless otherwise noted: VS+ = +5 V, VS– = 0 V, VOUT = 2 VPP, RF = 0 Ω, RL = 2 kΩ, G = 1 V/V, Input and Output Referenced to mid-supply. TA = 25°C. Unless otherwise noted. PARAMETER CONDITIONS MIN TYP MAX UNITS TEST LEVEL (1) MHz C AC PERFORMANCE Small-signal bandwidth VOUT = 100 mVPP, G = 1 56 VOUT = 100 mVPP, G = 2 22.5 VOUT = 100 mVPP, G = 5 7.4 VOUT = 100 mVPP, G = 10 3.
PAGE 7
OPA835 OPA2835 www.ti.com SLOS713E – JANUARY 2011 – REVISED JULY 2013 SPECIFICATIONS: VS = 5 V Test conditions unless otherwise noted: VS+ = +5 V, VS– = 0 V, VO = 2 VPP, RF = 0 Ω, RL = 2 kΩ, G = 1 V/V, Input and Output Referenced to mid-supply. TA = 25°C. Unless otherwise noted.
PAGE 8
OPA835 OPA2835 SLOS713E – JANUARY 2011 – REVISED JULY 2013 www.ti.com SPECIFICATIONS: VS = 5 V (continued) Test conditions unless otherwise noted: VS+ = +5 V, VS– = 0 V, VO = 2 VPP, RF = 0 Ω, RL = 2 kΩ, G = 1 V/V, Input and Output Referenced to mid-supply. TA = 25°C. Unless otherwise noted.
PAGE 9
OPA835 OPA2835 www.ti.com SLOS713E – JANUARY 2011 – REVISED JULY 2013 DEVICE INFORMATION PIN CONFIGURATIONS OPA835 (TOP VIEW) OPA835 (TOP VIEW) SOT23-6 (DBV) WFQN-10 (RUN) VS+ VOUT 1 6 VS+ VS- 2 5 PD VIN+ 3 4 VIN- VOUT 1 VIN- 2 VIN+ 3 PD 4 10 9 FB1 8 FB2 7 FB3 6 FB4 2.4k + - - + 1.
PAGE 10
OPA835 OPA2835 SLOS713E – JANUARY 2011 – REVISED JULY 2013 www.ti.
PAGE 11
OPA835 OPA2835 www.ti.com SLOS713E – JANUARY 2011 – REVISED JULY 2013 PIN FUNCTIONS (continued) PIN NUMBER DESCRIPTION NAME 8 VIN2– Amplifier 2 inverting input 9 VOUT2 Amplifier 2 output 10 VS+ Positive power supply input SPACER TYPICAL PERFORMANCE GRAPHS: VS = 2.7 V Test conditions unless otherwise noted: VS+ = +2.7 V, VS– = 0 V, VOUT = 1 Vpp, RF = 0 Ω, RL = 2 kΩ, G = 1 V/V, Input and Output Referenced to mid-supply unless otherwise noted. TA = 25°C.
PAGE 12
OPA835 OPA2835 SLOS713E – JANUARY 2011 – REVISED JULY 2013 www.ti.com TYPICAL PERFORMANCE GRAPHS: VS = 2.7 V 21 21 VS = 2.7 V, VOUT = 100 mVpp, G = 10 18 15 G=5 G=5 12 Gain Magnitude - dB Gain Magnitude - dB RL = 2 kW RL = 2 kW 15 VS = 2.7 V, VOUT = 1 Vpp, G = 10 18 9 6 G=2 3 12 9 6 G=2 G=1 3 0 0 -3 -3 G=1 -6 G = -1 -6 G = -1 -9 100k 1M 10M f - Frequency - Hz -9 100k 100M 10M 100M f - Frequency - Hz Figure 1. Small Signal Frequency Response Figure 2.
PAGE 13
OPA835 OPA2835 www.ti.com SLOS713E – JANUARY 2011 – REVISED JULY 2013 TYPICAL PERFORMANCE GRAPHS: VS = 2.7 V (continued) -50 -30 VS = 2.7 V, G = 1, VOUT = 1 Vpp, -40 RF = 0 W, RL = 2 kW -60 -70 -80 -90 HD2 -100 HD3 -110 -60 Harmonic Distortion - dBc Harmonic Distortion - dBc -50 VS = 2.7 V, G = 1, f = 1 MHz, RF = 0 W VOUT = 1 Vpp -55 -65 HD2 -70 -75 HD3 -80 -120 -85 -130 -90 100 -140 f - Frequency - Hz 1k RLOAD - Load Resistance - W Figure 7.
PAGE 14
OPA835 OPA2835 SLOS713E – JANUARY 2011 – REVISED JULY 2013 www.ti.com TYPICAL PERFORMANCE GRAPHS: VS = 2.7 V (continued) 1000 3 VS = 2.7 V, G=1 100 CL = 10 pF Gain Magnitude - dB ZO - Output Impedance - W 0 10 1 RO = 0 W CL = 100 pF CL = 22 pF RO = 40.2 W RO = 76.8 W CL = 220 pF -3 CL = 1 pF RO = 24.9 W RO = 0 W CL = 560 pF RO = 13 W -6 0.1 VS = 2.7 V, G = 1, RF = 0 W CL = 1000 pF RO = 10 W RL = 2 kW 0.01 10k 1M 10M f - Frequency - Hz 100k 100M -9 100k 1G Figure 13.
PAGE 15
OPA835 OPA2835 www.ti.com SLOS713E – JANUARY 2011 – REVISED JULY 2013 TYPICAL PERFORMANCE GRAPHS: VS = 2.7 V (continued) 3 −80 VS = 2.7 V, G = 2, RF = 2 kW 2.5 VPD RL = 2 kW −90 VOUT / VPD Crosstalk (dB) 2 −100 −110 1.5 VOUT 1 −120 0.5 −130 −140 0 20 100 1k 10k 100k Frequency (Hz) 1M 10M 50M 0 500 t - Time - ns Figure 19. Crosstalk vs Frequency 1000 Figure 20.
PAGE 16
OPA835 OPA2835 SLOS713E – JANUARY 2011 – REVISED JULY 2013 www.ti.com TYPICAL PERFORMANCE GRAPHS: VS = 2.7 V (continued) 7 100 80 6 0°C to 70°C -40°C to 85°C -40°C to 125°C 5 40 20 4 Count IOS - Offset Current - nA 60 0 3 -20 -40 2 -60 1 -80 -100 -40 -20 0 20 40 60 80 100 120 0 -250 -200-150-100-50 0 TA - Free-Air Temperature - °C Figure 25. Input Offset Current vs Free-Air Temperature 16 50 100 150 200 250 300 350 400 450 500 550 IOS - Drift - pA/°C Figure 26.
PAGE 17
OPA835 OPA2835 www.ti.com SLOS713E – JANUARY 2011 – REVISED JULY 2013 TYPICAL PERFORMANCE GRAPHS: VS = 5 V Test conditions unless otherwise noted: VS+ = +5 V, VS– = 0 V, VOUT = 2 Vpp, RF = 0 Ω, RL = 2 kΩ, G = 1 V/V, Input and Output Referenced to mid-supply unless otherwise noted. TA = 25°C.
PAGE 18
OPA835 OPA2835 SLOS713E – JANUARY 2011 – REVISED JULY 2013 www.ti.com TYPICAL PERFORMANCE GRAPHS: VS = 5 V 21 21 VS = 5 V, VOUT = 100 mVpp, G = 10 18 RL = 2 kW G=5 12 9 6 G=2 3 G=1 9 6 G=2 3 0 0 -3 1M G = -1 G=1 -6 G = -1 -9 100k G=5 12 -3 -6 RL = 2 kW 15 Gain Magnitude - dB 10M -9 100k 100M 1M Figure 27. Small Signal Frequency Response 5 VS = 5 V, 4.5 G = -1, RF = 2 kW 4 R = 2 kW 4.5 4 3.
PAGE 19
OPA835 OPA2835 www.ti.com SLOS713E – JANUARY 2011 – REVISED JULY 2013 TYPICAL PERFORMANCE GRAPHS: VS = 5 V (continued) -30 -50 -50 VS = 5 V, G = 1, VOUT = 2 Vpp, -60 RL = 2 kW VS = 5 V, G = 1, f = 1 MHz, RF = 0 W VOUT = 2 Vpp -55 RF = 0 W, Harmonic Distortion - dBc Harmonic Distortion - dBc -40 -70 -80 -90 HD2 -100 -110 HD3 -60 -65 HD2 -70 HD3 -75 -80 -120 -85 -130 -140 10k 100k 1M -90 100 10M f - Frequency - Hz 1k 10k RLOAD - Load Resistance - W Figure 33.
PAGE 20
OPA835 OPA2835 SLOS713E – JANUARY 2011 – REVISED JULY 2013 www.ti.com TYPICAL PERFORMANCE GRAPHS: VS = 5 V (continued) ZO - Output Impedance - W 3 VS = 5 V, G=1 100 VS = 5 V, G = 1, RF = 0 W RL = 2 kW 0 Gain Magnitude - dB 10 1 0.1 CL = 10 pF CL = 100 pF RO = 0 W RO = 40.2 W CL = 220 pF -3 CL = 1 pF RO = 24.9 W RO = 0 W CL = 560 pF CL = 22 pF RO = 13 W RO = 76.8 W CL = 1000 pF -6 RO = 10 W 0.01 10K 100K 1M 10M f - Frequency - Hz 100M -9 100k 1G Figure 39.
PAGE 21
OPA835 OPA2835 www.ti.com SLOS713E – JANUARY 2011 – REVISED JULY 2013 TYPICAL PERFORMANCE GRAPHS: VS = 5 V (continued) 5 4.5 VS = 5 V, G = 2, RF = 2 kW VPD −80 4 RL = 2 kW 3.5 VOUT / VPD Crosstalk (dB) −90 −100 −110 3 VOUT 2.5 2 1.5 −120 1 −130 0.5 −140 20 100 1k 10k 100k Frequency (Hz) 1M 10M 0 0 50M 500 t - Time - ns Figure 45. Crosstalk vs Frequency 1000 Figure 46.
PAGE 22
OPA835 OPA2835 SLOS713E – JANUARY 2011 – REVISED JULY 2013 www.ti.com TYPICAL PERFORMANCE GRAPHS: VS = 5 V (continued) 100 9 80 8 7 40 6 20 Count IOS - Offset Current - nA 60 0°C to 70°C -40°C to 85°C -40°C to 125°C 0 5 4 -20 3 -40 -60 2 -80 1 -100 -40 -20 0 20 40 60 80 100 120 0 -250 -200-150-100-50 0 TA - Free-Air Temperature - °C Figure 51. Input Offset Current vs Free-Air Temperature 22 50 100 150 200 250 300 350 400 450 500 550 IOS - Drift - pA/°C Figure 52.
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OPA835 OPA2835 www.ti.com SLOS713E – JANUARY 2011 – REVISED JULY 2013 APPLICATION INFORMATION The following circuits show application information for the OPA835 and OPA2835. For simplicity, power supply decoupling capacitors are not shown in these diagrams. Non-Inverting Amplifier The OPA835 and OPA2835 can be used as non-inverting amplifiers with signal input to the non-inverting input, VIN+. A basic block diagram of the circuit is shown in Figure 53.
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OPA835 OPA2835 SLOS713E – JANUARY 2011 – REVISED JULY 2013 www.ti.com VSIG VS+ VREF VREF VOUT GVSIG OPA 835 RG VIN VREF VSRF Figure 54. Inverting Amplifier Attenuators The non-inverting circuit of Figure 53 has minimum gain of 1. To implement attenuation, a resistor divider can be placed in series with the positive input, and the amplifier set for gain of 1 by shorting VOUT to VIN- and removing RG. Since the op amp input is high impedance, the attenuation is set by the resistor divider.
PAGE 25
OPA835 OPA2835 www.ti.com SLOS713E – JANUARY 2011 – REVISED JULY 2013 49.9 VSIG VOUT+ VREF VSIG VREF OPA 835 VIN 2k 2k + 49.9 VREF -VSIG VOUT- VREF OPA 835 + 1k Figure 56. CAT 5 Line Driver with Gain = 2 V/V (6 dB) Differential to Signal Ended Amplifier Figure 57 shows a differential amplifier that is used to convert differential signals to single-ended and provides gain (or attenuation) and level shifting.
PAGE 26
OPA835 OPA2835 SLOS713E – JANUARY 2011 – REVISED JULY 2013 V OUT ± www.ti.com æ 2RF ö = VIN ± ´ ç 1 + ÷ + VCM RG ø è (5) 2RF G= 1 + RG , and V passes with unity gain. The amplifier in essence The signal gain of the circuit is set by: CM combines two non-inverting amplifiers into one differential amplifier with the RG resistor shared, which makes RG effectively ½ its value when calculating the gain. The output signals are in-phase with the input signals.
PAGE 27
OPA835 OPA2835 www.ti.com SLOS713E – JANUARY 2011 – REVISED JULY 2013 Integrated solutions are available, but the OPA835 provides a much lower power high frequency solution. For best CMRR performance, resistors must be matched. A rule of thumb is CMRR ≈ the resistor tolerance; so 0.1% tolerance will provide about 60 dB CMRR.
PAGE 28
OPA835 OPA2835 SLOS713E – JANUARY 2011 – REVISED JULY 2013 www.ti.com Input Common-Mode Voltage Range When the primary design goal is a linear amplifier, with high CMRR, it is important to not violate the input common-mode voltage range (VICR) of an op amp. Common-mode input range low and high specifications in the table data use CMRR to set the limit. The limits are chosen to ensure CMRR will not degrade more than 3dB below its limit if the input voltage is kept within the specified range.
PAGE 29
OPA835 OPA2835 www.ti.com SLOS713E – JANUARY 2011 – REVISED JULY 2013 +2.5 V RG VSIG VOUT OPA 835 Load -2.5 V RF Figure 61. Split Supply Operation Single-Supply Operation (2.5V to 5.5V) Many newer systems use single power supply to improve efficiency and reduce the cost of the power supply.
PAGE 30
OPA835 OPA2835 SLOS713E – JANUARY 2011 – REVISED JULY 2013 www.ti.com Signal and bias from previous stage VSIG 2.5 V 5V R1 RO OPA 835 5V RG 2.5 V REF VOUT GVSIG 2.5 V C RF Signal and bias to next stage Figure 63. Non-Inverting Single Supply with Reference Figure 64 shows a similar non-inverting single supply scenario with the reference generator replaced by the Thevenin equivalent using resistors and the positive supply.
PAGE 31
OPA835 OPA2835 www.ti.com SLOS713E – JANUARY 2011 – REVISED JULY 2013 5V 5V R1 2.5 V REF RO VOUT OPA 835 C GVSIG 2.5 V RG Signal and bias to next stage RF VSIG 2.5 V Signal and bias from previous stage Figure 65. Inverting Single Supply with Reference Figure 66 shows a similar inverting single supply scenario with the reference generator replaced by the Thevenin equivalent using resistors and the positive supply.
PAGE 32
OPA835 OPA2835 SLOS713E – JANUARY 2011 – REVISED JULY 2013 www.ti.com Signal and bias from previous stage VSIG 0V 5V R1 RO VOUT OPA 835 GVSIG RG 0V RF Signal and bias to next stage Figure 67. Non-Inverting Single Supply with Pulse If the input signal pulses negative from ground, an inverting amplifier is more appropriate as shown in Figure 68.
PAGE 33
OPA835 OPA2835 www.ti.com SLOS713E – JANUARY 2011 – REVISED JULY 2013 Low Power Applications and the Effects of Resistor Values on Bandwidth The OPA835 and OPA2835 are designed for the nominal value of RF to be 2 kΩ in gains other than +1. This gives excellent distortion performance, maximum bandwidth, best flatness, and best pulse response. It also loads the amplifier.
PAGE 34
OPA835 OPA2835 SLOS713E – JANUARY 2011 – REVISED JULY 2013 www.ti.com Driving Capacitive Loads The OPA835 and OPA2835 can drive up to a nominal capacitive load of 10pF on the output with no special consideration. When driving capacitive loads greater than this, it is recommended to use a small resister (RO) in series with the output as close to the device as possible.
PAGE 35
OPA835 OPA2835 www.ti.com SLOS713E – JANUARY 2011 – REVISED JULY 2013 VS = 5 V, VOUT = 100 mVpp Gain Magnitude - dB 0 MFB -10 -20 Sallen-Key -30 -40 1k 10k 100k 1M f - Frequency - Hz Figure 74. MFB and Sallen-Key 2nd Order Low-Pass Butterworth Filter Response MFB and Sallen-Key filter circuits offer similar performance. The main difference is the MFB is an inverting amplifier in the pass band and the Sallen-Key is non-inverting.
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OPA835 OPA2835 SLOS713E – JANUARY 2011 – REVISED JULY 2013 www.ti.com 0 VS = 5 V, VOUT = 1 VRMS, -95 G = 1, RF = 0 W, BW = 80 kHz -100 -20 -30 No weighting RL = 300 W, -40 RL = 100 kW -105 A-weighting RL = 300 W, -110 VS = 5 V, VOUT = 1 VRMS, G = 1, RF = 0 W -10 FFT - dBV THD+N - Total Harmonic Distortion + Noise - dBv -90 -50 -60 -70 -80 -90 RL = 100 kW -100 Gen Mon - 100k -110 -115 -120 RL = 100k -130 -120 10 -140 100 1k f - Frequency - Hz 10k 0 100k Figure 76.
PAGE 37
OPA835 OPA2835 www.ti.com SLOS713E – JANUARY 2011 – REVISED JULY 2013 OPA835 and ADS8326 Combined Performance To show achievable performance, the OPA835 is tested as the drive amplifier for the ADS8326. The ADS8326 is a 16-bit, micro power, SAR ADC with pseudo-differential inputs and sample rates up to 250kSPS. It offers excellent noise and distortion performance in a small 8-pin SOIC or VSSOP (MSOP) package.
PAGE 38
OPA835 OPA2835 SLOS713E – JANUARY 2011 – REVISED JULY 2013 www.ti.com Layout Recommendations OPA835 EVM (SLOU314) should be used as a reference when designing the circuit board. It is recommended to follow the EVM layout of the external components near to the amplifier, ground plane construction, and power routing as closely as possible. General guidelines are: 1. Signal routing should be direct and as short as possible into an out of the op amp. 2.
PAGE 39
OPA835 OPA2835 www.ti.com SLOS713E – JANUARY 2011 – REVISED JULY 2013 Changes from Revision B (May 2011) to Revision C Page • Added the "The OPA835 RUN package..." text to the DESCRIPTION ................................................................................ 1 • Removed Product Preview from all devices except OPA835IRUNT and OPA835IRUNR ................................................... 2 • Replaced the TBD values in the Thermal Information table .........................................
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 1-Nov-2013 Pb-Free (RoHS): TI's terms "Lead-Free" or "Pb-Free" mean semiconductor products that are compatible with the current RoHS requirements for all 6 substances, including the requirement that lead not exceed 0.1% by weight in homogeneous materials. Where designed to be soldered at high temperatures, TI Pb-Free products are suitable for use in specified lead-free processes.
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PACKAGE MATERIALS INFORMATION www.ti.com 3-Aug-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device OPA2835IDGSR Package Package Pins Type Drawing VSSOP DGS SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant 10 2500 330.0 12.4 5.3 3.4 1.4 8.0 12.0 Q1 OPA2835IDR SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.0 Q1 OPA2835IRMCR UQFN RMC 10 3000 180.0 9.5 2.3 2.3 1.1 2.0 8.
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PACKAGE MATERIALS INFORMATION www.ti.com 3-Aug-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) OPA2835IDGSR VSSOP DGS 10 2500 366.0 364.0 50.0 OPA2835IDR SOIC D 8 2500 340.5 338.1 20.6 OPA2835IRMCR UQFN RMC 10 3000 205.0 200.0 30.0 OPA2835IRMCT UQFN RMC 10 250 205.0 200.0 30.0 OPA2835IRUNR QFN RUN 10 3000 210.0 185.0 35.0 OPA2835IRUNT QFN RUN 10 250 210.0 185.0 35.
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IMPORTANT NOTICE Texas Instruments Incorporated and its subsidiaries (TI) reserve the right to make corrections, enhancements, improvements and other changes to its semiconductor products and services per JESD46, latest issue, and to discontinue any product or service per JESD48, latest issue. Buyers should obtain the latest relevant information before placing orders and should verify that such information is current and complete.