Datasheet

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

FEATURES

D GAIN BANDWIDTH: 50MHz

D ZERO−CROSSOVER DISTORTION TOPOLOGY:

− Excellent THD+N: 0.0004%

− CMRR: 100dB (min)

− Rail-to-Rail Input and Output

− Input 100mV Beyond Supply Rail

D LOW NOISE: 4.5nV//Hz at 100kHz

D SLEW RATE: 25V/µs

D FAST SETTLING: 0.3µs to 0.01%

D PRECISION:

− Low Offset: 100µV

− Low Input Bias Current: 0.2pA

D 2.2V TO 5.5V OPERATION

APPLICATIONS

D SIGNAL CONDITIONING

D DATA ACQUISITION

D PROCESS CONTROL

D ACTIVE FILTERS

D TEST EQUIPMENT

D AUDIO

D WIDEBAND AMPLIFIERS

DESCRIPTION

The OPAx365 zer∅-crossover series, rail-to-rail, high-

performance, CMOS operational amplifiers are opti-

mized for very low voltage, single-supply applications.

Rail-to-rail input/output, low-noise (4.5nV/√Hz) and

high-speed operation (50MHz Gain Bandwidth) make

these devices ideal for driving sampling analog-to-digi-

tal converters (ADCs). Applications incude audio, sig-

nal conditioning, and sensor amplification. The OPA365

family of op amps are also well-suited for cell phone

power amplifier control loops.

Special features include an excellent common-mode

rejection ratio (CMRR), no input stage crossover distor-

tion, high input impedance, and rail-to-rail input and out-

put swing. The input common-mode range includes

both the negative and positive supplies. The output volt-

age swing is within 10mV of the rails.

The OPA365 (single version) is available in the micro-

SIZE SOT23-5 and SO-8 packages. The OPA2365

(dual version) is offered in the SO-8 package. All ver-

sions are specified for operation from −40°C to +125°C.

Single and dual versions have identical specifications

for maximum design flexibility.

Fast Settling Peak Detector

OUT

2.2pF

Ω

SD1

BAT17

10nF

7.5

Ω

−

OPA365

OPA2365

SBOS365D − JUNE 2006 − REVISED JUNE 2009

50MHz, Low-Distortion, High CMRR,

RRI/O, Single-Supply

OPERATIONAL AMPLIFIER

         

          

 !     !   

www.ti.com

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.

All trademarks are the property of their respective owners.

Summary of content (24 pages)

PAGE 1
OPA365 OPA2365 SBOS365D − JUNE 2006 − REVISED JUNE 2009 50MHz, Low-Distortion, High CMRR, RRI/O, Single-Supply OPERATIONAL AMPLIFIER FEATURES DESCRIPTION D GAIN BANDWIDTH: 50MHz D ZERO−CROSSOVER DISTORTION TOPOLOGY: The OPAx365 zer∅-crossover series, rail-to-rail, highperformance, CMOS operational amplifiers are optimized for very low voltage, single-supply applications. Rail-to-rail input/output, low-noise (4.
PAGE 2
"#$ %"#$ www.ti.com SBOS365D − JUNE 2006 − REVISED JUNE 2009 ABSOLUTE MAXIMUM RATINGS(1) Supply Voltage . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . +5.5V Signal Input Terminals, Voltage(2) . . . . (V−) −0.5V to (V+) + 0.5V Signal Input Terminals, Current(2) . . . . . . . . . . . . . . . . . . . . ±10mA Output Short-Circuit(3) . . . . . . . . . . . . . . . . . . . . . . . . . Continuous Operating Temperature . . . . . . . . . . . . . . . . . . . . .
PAGE 3
"#$ %"#$ www.ti.com SBOS365D − JUNE 2006 − REVISED JUNE 2009 ELECTRICAL CHARACTERISTICS: VS = +2.2V to +5.5V 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, and VOUT = VS/2, unless otherwise noted.
PAGE 4
"#$ %"#$ www.ti.com SBOS365D − JUNE 2006 − REVISED JUNE 2009 TYPICAL CHARACTERISTICS At TA = +25°C, VS = +5V, and CL = 0pF, unless otherwise noted.
PAGE 5
"#$ %"#$ www.ti.com SBOS365D − JUNE 2006 − REVISED JUNE 2009 TYPICAL CHARACTERISTICS (continued) At TA = +25°C, VS = +5V, and CL = 0pF, unless otherwise noted. OPA365 OUTPUT VOLTAGE vs OUTPUT CURRENT 3 3 VS = ±1.1V VS = ±2.75V 1 −40_ C 0 +25_ C +125_C +25_ C VS = ±1.1V VS = ±2.
PAGE 6
"#$ %"#$ www.ti.com SBOS365D − JUNE 2006 − REVISED JUNE 2009 TYPICAL CHARACTERISTICS (continued) At TA = +25°C, VS = +5V, and CL = 0pF, unless otherwise noted. TOTAL HARMONIC DISTORTION + NOISE vs FREQUENCY INPUT VOLTAGE NOISE SPECTRAL DENSITY 1k 0.01 VO = 1VRMS 0.001 Voltage Noise (nV/√Hz) THD+N (%) G = 10, RL = 600Ω VO = 1.448VRMS 100 10 VO = 1VRMS G = +1, RL = 600Ω 1 0.
PAGE 7
"#$ %"#$ www.ti.com SBOS365D − JUNE 2006 − REVISED JUNE 2009 TYPICAL CHARACTERISTICS (continued) At TA = +25°C, VS = +5V, and CL = 0pF, unless otherwise noted. Output Voltage (1V/div) LARGE−SIGNAL STEP RESPONSE G=1 RL = 600Ω VS = ±2.
PAGE 8
"#$ %"#$ www.ti.com SBOS365D − JUNE 2006 − REVISED JUNE 2009 APPLICATIONS INFORMATION R2 10kΩ OPERATING CHARACTERISTICS The OPA365 amplifier parameters are fully specified from +2.2V to +5.5V. Many of the specifications apply from −40°C to +125°C. Parameters that can exhibit significant variance with regard to operating voltage or temperature are presented in the Typical Characteristics. +1.5V R1 1kΩ V+ OPA365 GENERAL LAYOUT GUIDELINES The OPA365 is a wideband amplifier.
PAGE 9
"#$ %"#$ www.ti.com SBOS365D − JUNE 2006 − REVISED JUNE 2009 Figure 2 shows a single-supply, electret microphone application where VCM is provided by a resistive divider. The divider also provides the bias voltage for the electret element. 49kΩ Clean 3.3V Supply 3.3V 4kΩ INPUT AND ESD PROTECTION The OPA365 incorporates internal electrostatic discharge (ESD) protection circuits on all pins.
PAGE 10
"#$ %"#$ www.ti.com SBOS365D − JUNE 2006 − REVISED JUNE 2009 A simplified schematic illustrating the rail-to-rail input circuitry is shown in Figure 5. VS Regulated Charge Pump VO U T = VC C +1.8V CAPACITIVE LOADS The OPA365 may be used in applications where driving a capacitive load is required. As with all op amps, there may be specific instances where the OPA365 can become unstable, leading to oscillation.
PAGE 11
"#$ %"#$ www.ti.com SBOS365D − JUNE 2006 − REVISED JUNE 2009 ACHIEVING AN OUTPUT LEVEL OF ZERO VOLTS (0V) V+ = +5V Certain single-supply applications require the op amp output to swing from 0V to a positive full-scale voltage and have high accuracy. An example is an op amp employed to drive a single-supply ADC having an input range from 0V to +5V. Rail-to-rail output amplifiers with very light output loading may achieve an output level within millivolts of 0V (or +VS at the high end), but not 0V.
PAGE 12
"#$ %"#$ www.ti.com SBOS365D − JUNE 2006 − REVISED JUNE 2009 One point to observe when considering the MFB filter is that the output is inverted, relative to the input. If this inversion is not required, or not desired, a noninverting output can be achieved through one of these options: 1) adding an inverting amplifier; 2) adding an additional 2nd-order MFB stage; or 3) using a noninverting filter topology such as the Sallen-Key (shown in Figure 9).
PAGE 13
"#$ %"#$ www.ti.com SBOS365D − JUNE 2006 − REVISED JUNE 2009 One method for driving an ADC that negates the need for an output swing down to 0V uses a slightly compressed ADC full-scale input range (FSR). For example, the 16-bit ADS8361 (shown in Figure 11) has a maximum FSR of 0V to 5V, when powered by a +5V supply and VREF of 2.5V. The idea is to match the ADC input range with the op amp full linear output swing range; for example, an output range of +0.1 to +4.9V.
PAGE 14
"#$ %"#$ www.ti.com SBOS365D − JUNE 2006 − REVISED JUNE 2009 Figure 12 illustrates the OPA2365 dual op amp providing signal conditioning within an ADS1258 bridge sensor circuit. It follows the ADS1258 16:1 multiplexer and is connected as a differential in/differential out amplifier. The voltage gain for this stage is approximately 10V/V. Driving the ADS1258 internal ADC in differential mode, rather than in a single-ended, exploits the full linearity performance capability of the converter.
PAGE 15
www.ti.com SBOS365D − JUNE 2006 − REVISED JUNE 2009 Revision History DATE REV PAGE SECTION DESCRIPTION Changed title. Changed feature bullets. 6/09 D 1 Front Page Changed drawing. Deleted table. NOTE: Page numbers for previous revisions may differ from page numbers in the current version.
PAGE 16
PACKAGE OPTION ADDENDUM www.ti.
PAGE 17
PACKAGE OPTION ADDENDUM www.ti.com 24-Jan-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.
PAGE 18
PACKAGE MATERIALS INFORMATION www.ti.com 26-Jan-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 OPA2365AIDR SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.0 Q1 OPA365AIDBVR SOT-23 DBV 5 3000 178.0 9.0 3.23 3.17 1.37 4.0 8.0 Q3 OPA365AIDBVR SOT-23 DBV 5 3000 179.0 8.4 3.2 3.2 1.4 4.0 8.
PAGE 19
PACKAGE MATERIALS INFORMATION www.ti.com 26-Jan-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) OPA2365AIDR SOIC D 8 2500 367.0 367.0 35.0 OPA365AIDBVR SOT-23 DBV 5 3000 180.0 180.0 18.0 OPA365AIDBVR SOT-23 DBV 5 3000 203.0 203.0 35.0 OPA365AIDBVT SOT-23 DBV 5 250 180.0 180.0 18.0 OPA365AIDR SOIC D 8 2500 367.0 367.0 35.
PAGE 20
PAGE 21
PAGE 22
PAGE 23
PAGE 24
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.