Datasheet

ManualsBrandsTEXAS INSTRUMENTS ManualsLinear ICsLinear IC - Op-amp Multi-purpose SOT 23 5

OPA2320

OPA2320S

OPA320

OPA2320

OPA320, OPA2320

OPA320S, OPA2320S

www.ti.com

SBOS513E –AUGUST 2010–REVISED JUNE 2013

Precision, 20MHz, 0.9pA, Low-Noise, RRIO,

CMOS Operational Amplifier with Shutdown

Check for Samples: OPA320, OPA2320, OPA320S, OPA2320S

FEATURES

DESCRIPTION

The OPA320 (single) and OPA2320 (dual) are a new

• Precision with Zero-Crossover Distortion:

generation of precision, low-voltage CMOS

– Low Offset Voltage: 150μV (max)

operational amplifiers optimized for very low noise

– High CMRR: 114dB

and wide bandwidth while operating on a low

quiescent current of only 1.45mA.

– Rail-to-Rail I/O

• Low Input Bias Current: 0.9pA (max)

The OPA320 series is ideal for low-power, single-

supply applications. Low-noise (7nV/√Hz) and high-

• Low Noise: 7nV/√Hz at 10kHz

speed operation also make them well-suited for

• Wide Bandwidth: 20MHz

driving sampling analog-to-digital converters (ADCs).

• Slew Rate: 10V/μs

Other applications include signal conditioning and

sensor amplification.

• Quiescent Current: 1.45mA/ch

• Single-Supply Voltage Range: 1.8V to 5.5V

The OPA320 features a linear input stage with zero-

crossover distortion that delivers excellent common-

• OPA320S, OPA2320S:

mode rejection ratio (CMRR) of typically 114dB over

– I

in Shutdown Mode: 0.1μA

the full input range. The input common-mode range

• Unity-Gain Stable

extends 100mV beyond the negative and positive

supply rails. The output voltage typically swings within

• Small Packages:

10mV of the rails.

– SOT23, MSOP, DFN

In addition, the OPAx320 have a wide supply voltage

range from 1.8V to 5.5V with excellent PSRR (106dB)

APPLICATIONS

over the entire supply range, making them suitable

• High-Z Sensor Signal Conditioning

for precision, low-power applications that run directly

• Transimpedance Amplifiers

from batteries without regulation.

• Test and Measurement Equipment

The OPA320 (single version) is available in a SOT23-

• Programmable Logic Controllers (PLCs)

5 package; the OPA320S shut-down single version is

available in an SOT23-6 package. The dual OPA2320

• Motor Control Loops

is offered in SO-8, MSOP-8, and DFN-8 packages,

• Communications

and the OPA2320S (dual with shut-down) in an

• Input/Output ADC/DAC Buffers

MSOP-10 package.

• Active Filters

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.

2FilterPro is a trademark of Texas Instruments Incorporated.

3All other trademarks are the property of their respective owners.

UNLESS OTHERWISE NOTED this document contains

PRODUCTION DATA information current as of publication date.

Products conform to specifications per the terms of Texas

Instruments standard warranty. Production processing does not

necessarily include testing of all parameters.

Summary of content (37 pages)

PAGE 1
OPA OPA320, OPA2320 OPA320S, OPA2320S 320 OP A2 OP A2 320 320S OP A2 320 www.ti.com SBOS513E – AUGUST 2010 – REVISED JUNE 2013 Precision, 20MHz, 0.
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OPA320, OPA2320 OPA320S, OPA2320S SBOS513E – AUGUST 2010 – REVISED JUNE 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.
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OPA320, OPA2320 OPA320S, OPA2320S www.ti.com SBOS513E – AUGUST 2010 – REVISED JUNE 2013 ELECTRICAL CHARACTERISTICS: VS = +1.8V to +5.5V or ±0.9V to ±2.75V Boldface limits apply over the specified temperature range, TA = –40°C to +125°C. At TA = +25°C, RL = 10kΩ connected to VS/2, VCM = VS/2, VOUT = VS/2, and SHDN x = VS+, unless otherwise noted.
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OPA320, OPA2320 OPA320S, OPA2320S SBOS513E – AUGUST 2010 – REVISED JUNE 2013 www.ti.com ELECTRICAL CHARACTERISTICS: VS = +1.8V to +5.5V or ±0.9V to ±2.75V (continued) Boldface limits apply over the specified temperature range, TA = –40°C to +125°C. At TA = +25°C, RL = 10kΩ connected to VS/2, VCM = VS/2, VOUT = VS/2, and SHDN x = VS+, unless otherwise noted.
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OPA320, OPA2320 OPA320S, OPA2320S www.ti.com SBOS513E – AUGUST 2010 – REVISED JUNE 2013 THERMAL INFORMATION: OPA320, OPA320S THERMAL METRIC (1) OPA320 OPA320S DBV (SOT23) DBV (SOT23) 5 PINS 6 PINS θJA Junction-to-ambient thermal resistance 219.3 177.5 θJC(top) Junction-to-case(top) thermal resistance 107.5 108.9 θJB Junction-to-board thermal resistance 57.5 27.4 ψJT Junction-to-top characterization parameter 7.4 13.3 ψJB Junction-to-board characterization parameter 56.9 26.
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OPA320, OPA2320 OPA320S, OPA2320S SBOS513E – AUGUST 2010 – REVISED JUNE 2013 www.ti.
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OPA320, OPA2320 OPA320S, OPA2320S www.ti.com SBOS513E – AUGUST 2010 – REVISED JUNE 2013 TYPICAL CHARACTERISTICS At TA = +25°C, VCM = VOUT = mid-supply, and RL = 10kΩ, unless otherwise noted. OFFSET VOLTAGE PRODUCTION DISTRIBUTION OFFSET VOLTAGE DRIFT DISTRIBUTION 14 25 20 Number of Amplifiers Number of Amplifiers (%) 12 10 8 6 4 15 10 5 2 0 0 -130 -120 -110 -100 -90 -80 -70 -60 -50 -40 -30 -20 -10 0 10 20 30 40 50 60 70 80 90 100 110 120 130 0.1 0.5 0.9 1.3 1.7 2.1 2.5 2.
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OPA320, OPA2320 OPA320S, OPA2320S SBOS513E – AUGUST 2010 – REVISED JUNE 2013 www.ti.com TYPICAL CHARACTERISTICS (continued) At TA = +25°C, VCM = VOUT = mid-supply, and RL = 10kΩ, unless otherwise noted. INPUT BIAS CURRENT vs COMMON-MODE VOLTAGE 6 0.8 5 4 0.6 Input Bias Current (pA) Input Bias Current (pA) INPUT BIAS CURRENT vs SUPPLY VOLTAGE 1 0.4 0.2 0 -0.2 -0.4 -0.6 -1 0.9 1.1 1.3 1.5 1.7 1.9 2.1 2.3 2.5 2.7 2 1 0 -1 -2 -3 IB+ IBIOS -4 IBIB+ -0.8 3 -5 -6 2.9 -3 -2.5 -2 -1.
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OPA320, OPA2320 OPA320S, OPA2320S www.ti.com SBOS513E – AUGUST 2010 – REVISED JUNE 2013 TYPICAL CHARACTERISTICS (continued) At TA = +25°C, VCM = VOUT = mid-supply, and RL = 10kΩ, unless otherwise noted. INPUT VOLTAGE NOISE SPECTRAL DENSITY vs FREQUENCY 0.1Hz TO 10Hz INPUT VOLTAGE NOISE 6 VS = 1.8V to 5.5V 5 4 3 100 Voltage (mV) Voltage Noise (nV/ÖHz) 1000 10 2 1 0 -1 -2 -3 1 -4 10 100 1k 10k 1M 100k 0 1 2 3 4 Frequency (Hz) Figure 13.
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OPA320, OPA2320 OPA320S, OPA2320S SBOS513E – AUGUST 2010 – REVISED JUNE 2013 www.ti.com TYPICAL CHARACTERISTICS (continued) At TA = +25°C, VCM = VOUT = mid-supply, and RL = 10kΩ, unless otherwise noted. OPEN-LOOP OUTPUT IMPEDANCE vs FREQUENCY SMALL-SIGNAL OVERSHOOT vs LOAD CAPACITANCE 1000 70 G = 1, VS = 1.8V VS = ±2.75V G = 1, VS = 5.5V G = 10, VS = 1.8V 50 Overshoot (%) Impedance (W) 60 100 G = 10, VS = 5.
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OPA320, OPA2320 OPA320S, OPA2320S www.ti.com SBOS513E – AUGUST 2010 – REVISED JUNE 2013 TYPICAL CHARACTERISTICS (continued) At TA = +25°C, VCM = VOUT = mid-supply, and RL = 10kΩ, unless otherwise noted. SLEW RATE vs SUPPLY VOLTAGE SMALL-SIGNAL STEP RESPONSE 12 0.1 CL = 50pF 0.075 11.5 Voltage (V) Slew Rate (V/ms) 0.05 11 Rise 10.5 Fall 10 Gain = +1 VS = ±2.75V VIN = 100mVPP 0.025 0 -0.025 -0.05 9.5 VOUT VIN -0.075 9 1.6 2 2.4 2.8 3.2 3.6 4 4.4 4.8 5.2 -0.1 -0.8 5.6 0 -0.4 0.
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OPA320, OPA2320 OPA320S, OPA2320S SBOS513E – AUGUST 2010 – REVISED JUNE 2013 www.ti.com TYPICAL CHARACTERISTICS (continued) At TA = +25°C, VCM = VOUT = mid-supply, and RL = 10kΩ, unless otherwise noted. ENABLE SHUTDOWN Voltage (1 V/div) Voltage (500 mV/div) ENABLE SHUTDOWN G = 1 V/V VS = 1.8V VIN = 1.5V Output Pin Enable Pin G = 1 V/V VS = 5.5V VIN = 4V Output Pin Enable Pin Time (5 s/div) Time (2.5 s/div) C001 C001 Figure 31. 12 Submit Documentation Feedback Figure 32.
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OPA320, OPA2320 OPA320S, OPA2320S www.ti.com SBOS513E – AUGUST 2010 – REVISED JUNE 2013 APPLICATION INFORMATION RAIL-TO-RAIL INPUT OPERATING VOLTAGE The OPA320 series op amps are unity-gain stable and can operate on a single-supply voltage (1.8V to 5.5V), or a split supply voltage (±0.9V to ±2.75V), making them highly versatile and easy to use. The power-supply pins should have local bypass ceramic capacitors (typically 0.001μF to 0.1μF). The OPA320 amplifiers are fully specified from +1.8V to +5.
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OPA320, OPA2320 OPA320S, OPA2320S SBOS513E – AUGUST 2010 – REVISED JUNE 2013 www.ti.com FEEDBACK CAPACITOR IMPROVES RESPONSE For optimum settling time and stability with highimpedance feedback networks, it may be necessary to add a feedback capacitor across the feedback resistor, RF, as shown in Figure 35. This capacitor compensates for the zero created by the feedback network impedance and the OPA320 input capacitance (and any parasitic layout capacitance).
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OPA320, OPA2320 OPA320S, OPA2320S www.ti.com SBOS513E – AUGUST 2010 – REVISED JUNE 2013 This resistor significantly reduces the overshoot and ringing associated with large capacitive loads. A possible problem with this technique is that a voltage divider is created with the added series resistor and any resistor connected in parallel with the capacitive load. The voltage divider introduces a gain error at the output that reduces the output swing.
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OPA320, OPA2320 OPA320S, OPA2320S SBOS513E – AUGUST 2010 – REVISED JUNE 2013 GENERAL LAYOUT GUIDELINES The OPA320 is a wideband amplifier. To realize the full operational performance of the device, good highfrequency printed circuit board (PCB) layout practices are required. The bypass capacitors must be connected between each supply pin and ground as close to the device as possible. The bypass capacitor traces should be designed for minimum inductance. LEADLESS DFN PACKAGE www.ti.
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OPA320, OPA2320 OPA320S, OPA2320S www.ti.com SBOS513E – AUGUST 2010 – REVISED JUNE 2013 For single-supply applications, the +IN input can be biased with a positive dc voltage to allow the output to reach true zero when the photodiode is not exposed to any light, and respond without the added delay that results from coming out of the negative rail; this configuration is shown in Figure 41. This bias voltage also appears across the photodiode, providing a reverse bias for faster operation.
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OPA320, OPA2320 OPA320S, OPA2320S SBOS513E – AUGUST 2010 – REVISED JUNE 2013 www.ti.com DRIVING ADCS The OPA320 can be used to buffer the ADC switched input capacitance and resulting charge injection while providing signal gain. Figure 44 shows the OPA320 configured to drive the ADS8326. The OPA320 series op amps are well-suited for driving sampling analog-to-digital converters (ADCs) with sampling speeds up to 1MSPS.
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OPA320, OPA2320 OPA320S, OPA2320S www.ti.com SBOS513E – AUGUST 2010 – REVISED JUNE 2013 ACTIVE FILTER The OPA320 is well-suited for active filter applications that require a wide bandwidth, fast slew rate, lownoise, single-supply operational amplifier. Figure 45 shows a 500kHz, second-order, low-pass filter using the multiple−feedback (MFB) topology. The components have been selected to provide a maximally-flat Butterworth response. Beyond the cutoff frequency, roll-off is –40dB/dec.
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OPA320, OPA2320 OPA320S, OPA2320S SBOS513E – AUGUST 2010 – REVISED JUNE 2013 www.ti.com REVISION HISTORY NOTE: Page numbers for previous revisions may differ from page numbers in the current version. Changes from Revision D (November 2011) to Revision E Page • Deleted Ordering Information table .......................................................................................................................................
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.com 18-Oct-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 14-Oct-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device Package Package Pins Type Drawing SPQ Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) B0 (mm) K0 (mm) P1 (mm) W Pin1 (mm) Quadrant OPA2320AIDGKR VSSOP DGK 8 2500 330.0 12.4 5.3 3.4 1.4 8.0 12.0 Q1 OPA2320AIDGKR VSSOP DGK 8 2500 330.0 12.4 5.3 3.4 1.4 8.0 12.0 Q1 OPA2320AIDGKT VSSOP DGK 8 250 180.0 12.4 5.3 3.4 1.4 8.0 12.
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PACKAGE MATERIALS INFORMATION www.ti.com 14-Oct-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) OPA2320AIDGKR VSSOP DGK 8 2500 367.0 367.0 35.0 OPA2320AIDGKR VSSOP DGK 8 2500 366.0 364.0 50.0 OPA2320AIDGKT VSSOP DGK 8 250 210.0 185.0 35.0 OPA2320AIDR SOIC D 8 2500 367.0 367.0 35.0 OPA2320AIDRGR SON DRG 8 3000 367.0 367.0 35.0 OPA2320AIDRGT SON DRG 8 250 210.0 185.0 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.