Datasheet

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

Low-Cost, Low-Power, Rail-to-Rail

OPERATIONAL AMPLIFIERS

MicroAmplifier

™

Series

FEATURES

● LOW QUIESCENT CURRENT: 150µA typ

● RAIL-TO-RAIL INPUT

● RAIL-TO-RAIL OUTPUT (within 1mV)

● SINGLE SUPPLY CAPABILITY

● LOW COST

●

Micro

SIZE PACKAGE OPTIONS:

SOT23-5

MSOP-8

TSSOP-14

● BANDWIDTH: 1MHz

● SLEW RATE: 1V/µs

● THD + NOISE: 0.006%

APPLICATIONS

● COMMUNICATIONS

● PCMCIA CARDS

● DATA ACQUISITION

● PROCESS CONTROL

● AUDIO PROCESSING

● ACTIVE FILTERS

● TEST EQUIPMENT

● CONSUMER ELECTRONICS

DESCRIPTION

The OPA342 series rail-to-rail CMOS operational

amplifiers are designed for low-cost, low-power, min-

iature applications. They are optimized to operate on

a single supply as low as 2.5V with an input common-

mode voltage range that extends 300mV beyond the

supplies.

Rail-to-rail input/output and high-speed operation make

them ideal for driving sampling Analog-to-Digital Con-

verters (ADC). They are also well suited for general-

purpose and audio applications and providing I/V con-

version at the output of Digital-to-Analog Converters

(DAC). Single, dual, and quad versions have identical

specs for design flexibility.

The OPA342 series offers excellent dynamic response

with a quiescent current of only 250µA max. Dual and

quad designs feature completely independent circuitry

for lowest crosstalk and freedom from interaction.

OPA342

OPA2342

OPA4342

OPA342

OPA4342

SINGLE DUAL QUAD

PACKAGE OPA342 OPA2342 OPA4342

SOT23-5 ✔

MSOP-8 ✔

SO-8 ✔✔

TSSOP-14 ✔

SO-14 ✔

DIP-14 ✔

SPICE MODEL available at www.burr-brown.com.

www.ti.com

Summary of content (15 pages)

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OPA OPA342 OPA2342 OPA4342 434 2 OPA 342 OPA 234 2 OPA ® 342 OPA 434 2 www.ti.com Low-Cost, Low-Power, Rail-to-Rail OPERATIONAL AMPLIFIERS MicroAmplifier ™ Series FEATURES DESCRIPTION LOW QUIESCENT CURRENT: 150µA typ RAIL-TO-RAIL INPUT RAIL-TO-RAIL OUTPUT (within 1mV) SINGLE SUPPLY CAPABILITY LOW COST MicroSIZE PACKAGE OPTIONS: SOT23-5 MSOP-8 TSSOP-14 ● BANDWIDTH: 1MHz ● SLEW RATE: 1V/µs ● THD + NOISE: 0.
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SPECIFICATIONS: VS = 2.7V to 5.5V At TA = +25°C, RL = 10kΩ connected to VS /2 and VOUT = VS /2, unless otherwise noted. Boldface limits apply over the temperature range, TA = –40°C to +85°C. OPA342NA, UA OPA2342EA, UA OPA4342EA, UA, PA PARAMETER OFFSET VOLTAGE Input Offset Voltage TA = –40°C to +85°C vs Temperature vs Power Supply TA = –40°C to +85°C Channel Separation, dc f = 1kHz CONDITION VOS dVOS/dT PSRR VCM = VS /2 VS = 2.7V to 5.5V, VCM < (V+) -1.8V VS = 2.7V to 5.5V, VCM < (V+) -1.
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ABSOLUTE MAXIMUM RATINGS(1) ELECTROSTATIC DISCHARGE SENSITIVITY Supply Voltage, V+ to V- ................................................................... 7.5V Signal Input Terminals, Voltage(2) ..................... (V–) –0.5V to (V+) +0.5V Current(2) .................................................... 10mA Output Short-Circuit(3) .............................................................. Continuous Operating Temperature ..................................................
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TYPICAL PERFORMANCE CURVES At TA = +25°C, VS = +5V, and RL = 10kΩ connected to VS/2, unless otherwise noted. POWER SUPPLY AND COMMON-MODE REJECTION RATIO vs FREQUENCY OPEN-LOOP GAIN/PHASE vs FREQUENCY 100 100 30 80 +PSRR Phase 80 60 60 90 40 120 Phase (°) Gain (dB) 0 Gain 20 Rejection Ratio (dB) 120 0.1 10 1 100 1k 10k 100k 1M 60 40 20 150 0 CMRR –PSRR 10 180 10M 10 100 Channel Separation (dB) Maximum Output Voltage (Vp-p) VS = +5.5V 5 VS = +5V 4 3 VS = +2.
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TYPICAL PERFORMANCE CURVES (Cont.) At TA = +25°C, VS = +5V, and RL = 10kΩ connected to VS/2, unless otherwise noted. OPEN-LOOP GAIN, COMMON-MODE REJECTION RATIO, AND POWER SUPPLY REJECTION vs TEMPERATURE INPUT BIAS CURRENT vs TEMPERATURE 140 10000 AOL Input Bias Current (pA) AOL, CMRR, PSRR (dB) 120 100 CMRR 80 PSRR 60 40 20 0 1000 100 10 1 0.
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TYPICAL PERFORMANCE CURVES (Cont.) At TA = +25°C, VS = +5V, and RL = 10kΩ connected to VS/2, unless otherwise noted.
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TYPICAL PERFORMANCE CURVES (Cont.) At TA = +25°C, VS = +5V, and RL = 10kΩ connected to VS/2, unless otherwise noted.
PAGE 8
APPLICATIONS INFORMATION OPA342 series op amps are unity gain stable and can operate on a single supply, making them highly versatile and easy to use. Rail-to-rail input and output swing significantly increases dynamic range, especially in low supply applications. Figure 1 shows the input and output waveforms for the OPA342 in unity-gain configuration. Operation is from VS = +5V with a 10kΩ load connected to VS /2. The input is a 5Vp-p sinusoid. Output voltage is approximately 4.997Vp-p.
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DESIGN OPTIMIZATION WITH RAIL-TO-RAIL INPUT OP AMPS With a unity-gain buffer, for example, signals will traverse this transition at approximately 1.3V below V+ supply and may exhibit a small discontinuity at this point. The common-mode voltage of the non-inverting amplifier is equal to the input voltage. If the input signal always remains less than the transition voltage, no discontinuity will be created. The closed-loop gain of this configuration can still produce a rail-to-rail output.
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DRIVING A/D CONVERTERS The OPA342 series op amps are optimized for driving medium-speed sampling ADCs. The OPA342 op amps buffer the ADC’s input capacitance and resulting charge injection while providing signal gain. Overshoot vs Capacitive Load.” In unity-gain configurations, capacitive load drive can be improved by inserting a small (10Ω to 20Ω) resistor, RS, in series with the output, as shown in Figure 5. This significantly reduces ringing while maintaining dc performance for purely capacitive loads.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE OPTION ADDENDUM www.ti.
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PACKAGE MATERIALS INFORMATION www.ti.com 24-Jul-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 OPA2342EA/250 VSSOP DGK 8 250 180.0 12.4 5.3 3.4 1.4 8.0 12.0 Q1 OPA2342EA/2K5 VSSOP DGK 8 2500 330.0 12.4 5.3 3.4 1.4 8.0 12.0 Q1 OPA2342UA/2K5 SOIC D 8 2500 330.0 12.4 6.4 5.2 2.1 8.0 12.
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PACKAGE MATERIALS INFORMATION www.ti.com 24-Jul-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) OPA2342EA/250 VSSOP DGK OPA2342EA/2K5 VSSOP DGK 8 250 210.0 185.0 35.0 8 2500 367.0 367.0 35.0 OPA2342UA/2K5 SOIC D 8 2500 367.0 367.0 35.0 OPA4342EA/250 TSSOP PW 14 250 210.0 185.0 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.