Datasheet

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SINGLE-SUPPLY, RAIL-TO-RAIL

OPERATIONAL AMPLIFIER WITH SHUTDOWN

microAmplifier

™

Series

FEATURES

● RAIL-TO-RAIL INPUT AND OUTPUT SWING

●

Micro

SIZE PACKAGES

● BANDWIDTH: 5.5MHz

● SLEW RATE: 6V/

µs

● QUIESCENT CURRENT: 750

µA/Chan

● POWER SHUTDOWN MODE

APPLICATIONS

● SENSOR BIASING

● SIGNAL CONDITIONING

● DATA ACQUISITION

● PROCESS CONTROL

● ACTIVE FILTERS

● TEST EQUIPMENT

DESCRIPTION

The OPA341 series rail-to-rail CMOS operational amplifiers

are designed for low-cost, miniature applications. They are

optimized for low-voltage, single-supply operation. Rail-to-rail

input and output and high-speed operation make them ideal for

driving sampling Analog-to-Digital (A/D) converters.

The power-saving shutdown feature makes the OPA341

ideal for portable low-power applications. The OPA341

series is also well suited for general-purpose and audio

applications as well as providing I/V conversion at the

output of Digital-to-Analog (D/A) converters. Single and

dual versions have identical specifications for design flex-

ibility.

The OPA341 series operate on a single supply as low as 2.5V,

and input common-mode voltage range extends 300mV beyond

the supply rails. Output voltage swings to within 1mV of the

supply rails with a 100kΩ load. The OPA341 series offers

excellent dynamic response (BW = 5.5MHz, SR = 6V/µs) with

a quiescent current of only 750µA. The dual design features

completely independent circuitry for lowest crosstalk and free-

dom from interaction.

The single (OPA341) packages are the tiny SOT23-6 surface

mount and SO-8 surface mount. The dual (OPA2341) comes

in the miniature MSOP-10 surface mount. All are specified

from –55°C to +125°C and operate from –55°C to +150°C.

The OPA343 provides similar performance without shut-

down capability.

OPA341

OPA2341

SBOS202A – AUGUST 2001

www.ti.com

PRODUCTION DATA information is 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.

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.

V+

–In

Out

V–

+In

OPA341

SOT23-6 (N)

V+

Out

–In

+In

V–

OPA341

SO-8 (U)

V+

Out B

–In B

+In B

SD B

Out A

–In A

+In A

V–

SD A

OPA2341

MSOP-10 (DGS)

OPA341

Summary of content (16 pages)

PAGE 1
OPA 2341 OPA341 OPA2341 OPA 341 SBOS202A – AUGUST 2001 SINGLE-SUPPLY, RAIL-TO-RAIL OPERATIONAL AMPLIFIER WITH SHUTDOWN microAmplifier ™ Series FEATURES APPLICATIONS ● ● ● ● ● ● ● ● ● ● ● ● RAIL-TO-RAIL INPUT AND OUTPUT SWING MicroSIZE PACKAGES BANDWIDTH: 5.5MHz SLEW RATE: 6V/µs QUIESCENT CURRENT: 750µA/Chan POWER SHUTDOWN MODE DESCRIPTION The OPA341 series rail-to-rail CMOS operational amplifiers are designed for low-cost, miniature applications.
PAGE 2
ABSOLUTE MAXIMUM RATINGS(1) ELECTROSTATIC DISCHARGE SENSITIVITY Supply Voltage, V+ to V– ................................................................... 6.0V Input Voltage Range(2) ................................... (V–) – 0.5V to (V+) + 0.5V Input Terminal(3) ............................................................................... 10mA Output Short Circuit(3) .............................................................. Continuous Operating Temperature .......................................
PAGE 3
ELECTRICAL CHARACTERISTICS: VS = 2.7V to 5.5V Boldface limits apply over the specified temperature range, TA = –55°C to +125°C. At TA = +25°C, RL = 10kΩ connected to VS / 2 and VOUT = VS / 2, VENABLE = VDD, unless otherwise noted. OPA341NA, UA OPA2341DGSA PARAMETER OFFSET VOLTAGE Input Offset Voltage Drift vs Power Supply Over Temperature Channel Separation, dc CONDITION VOS dVOS/dT PSRR VS = 5V VS = 2.7V to 5.5V, VCM = 0V VS = 2.7V to 5.5V, VCM = 0V NOISE Input Voltage Noise, f = 0.
PAGE 4
TYPICAL CHARACTERISTICS At TA = +25°C, VENABLE = VDD, VS = +5V, RL = 10kΩ, unless otherwise noted. POWER-SUPPLY AND COMMON-MODE REJECTION vs FREQUENCY OPEN-LOOP GAIN/PHASE vs FREQUENCY 160 100 0 PSRR 140 120 80 PSRR, CMRR (dB) –45 80 –90 60 Phase (°) AOL (dB) 100 40 –135 20 60 40 CMRR VCM = –0.3V to (V+) –1.8V 20 0 –180 –20 0.
PAGE 5
TYPICAL CHARACTERISTICS (Cont.) At TA = +25°C, VENABLE = VDD, VS = +5V, RL = 10kΩ, unless otherwise noted. OPEN-LOOP GAIN AND PSRR vs TEMPERATURE CMRR vs TEMPERATURE 100 160 120 90 RL = 100kΩ AOL AOL 100 RL = 2kΩ 80 VS = 5V, (V–) – 0.3V < VCM < (V+) – 1.8V CMRR (dB) AOL, CMRR, PSRR (dB) 140 80 PSRR VS = 5V, (V–) – 0.3V < VCM < (V+) + 0.3V 70 60 VS = 2.7V, (V–) – 0.3V < VCM < (V+) + 0.
PAGE 6
TYPICAL CHARACTERISTICS (Cont.) At TA = +25°C, VENABLE = VDD, VS = +5V, RL = 10kΩ, unless otherwise noted. INPUT BIAS CURRENT vs INPUT COMMON-MODE VOLTAGE INPUT BIAS vs TEMPERATURE 2 1.5 1000 Input Bias Current (pA) Input Bias Current (pA) 10000 100 10 1 1 0.5 0 –0.5 –1 0.1 –75 –25 25 75 125 150 –1 0 Temperature (°C) OUTPUT VOLTAGE SWING vs OUTPUT CURRENT +25°C –55°C Output Voltage (Vp-p) Output Voltage (V) 3 2 +125°C 0 0 ±10 ±30 ±40 5 6 ±50 ±60 VS = 5.
PAGE 7
TYPICAL CHARACTERISTICS (Cont.) At TA = +25°C, VENABLE = VDD, VS = +5V, RL = 10kΩ, unless otherwise noted. SHUTDOWN CURRENT vs TEMPERATURE SHUTDOWN CURRENT vs POWER SUPPLY 20 12 Shutdown Current (pA) Shutdown Current (nA) 11 15 10 5 10 9 8 7 6 5 VENABLE = VSS VENABLE = VSS 4 0 –75 –25 25 75 125 150 2 3 Temperature (°C) 4 5 6 Supply Voltage (V) SHUTDOWN CURRENT vs POWER SUPPLY SHUTDOWN CURRENT vs SHUTDOWN VOLTAGE 3.25 35 Shutdown Current (nA) Shutdown Current (nA) 30 3.00 2.
PAGE 8
TYPICAL CHARACTERISTICS (Cont.) At TA = +25°C, VENABLE = VDD, VS = +5V, RL = 10kΩ, unless otherwise noted. SETTLING TIME vs CLOSED-LOOP GAIN (2VStep G = +1) SMALL-SIGNAL OVERSHOOT vs LOAD CAPACITANCE 60 100 G = +1 50 Overshoot (%) Settling Time (µs) G = +5 G = –1 40 30 G = –5 20 0.01% 10 0.1% 1 10 0 0.
PAGE 9
APPLICATIONS INFORMATION OPERATING VOLTAGE OPA341 series op amps are fully specified from +2.7V to +5.5V. However, supply voltage may range from +2.5V to +5.5V. Parameters are tested over the specified supply range—a unique feature of the OPA341 series. In addition, many specifications apply from –55°C to +125°C. Most behavior remains virtually unchanged throughout the full operating voltage range.
PAGE 10
A double-folded cascode adds the signal from the two input pairs and presents a differential signal to the class AB output stage. Normally, input bias current is approximately 600fA, however, input voltages exceeding the power supplies by more than 300mV can cause excessive current to flow in or out of the input pins. Momentary voltages greater than 300mV beyond the power supply can be tolerated if the current on the input pins is limited to 10mA.
PAGE 11
+5V 0.1µF RC Anti-Aliasing Filter 500Ω OPA341 10kΩ 1 VREF 8 V+ +In 2 VIN 0.1µF –In 3300pF 3 DCLOCK ADS7816 12-Bit A/D Converter DOUT CS/SHDN 7 6 5 Serial Interface GND 4 VIN = 0V to 5V for 0V to 5V output. ENABLE Timing Logic NOTE: A/D Input = 0 to VREF 1.6µs 3µs 15µs OA OA Enable Settling Anti-Aliasing Filter Settling OPA341 SD 1µs ADS7816 CS/SHDN 5µs FIGURE 5. OPA341 in Noninverting Configuration Driving the ADS7816 with Timing Diagram. +5V Filters 160Hz to 2.
PAGE 12
PACKAGE OPTION ADDENDUM www.ti.
PAGE 13
PACKAGE OPTION ADDENDUM www.ti.com 11-Apr-2013 (4) Multiple Top-Side Markings will be inside parentheses. Only one Top-Side Marking contained in parentheses and separated by a "~" will appear on a device. If a line is indented then it is a continuation of the previous line and the two combined represent the entire Top-Side Marking for that device. Important Information and Disclaimer:The information provided on this page represents TI's knowledge and belief as of the date that it is provided.
PAGE 14
PACKAGE MATERIALS INFORMATION www.ti.com 26-Jan-2013 TAPE AND REEL INFORMATION *All dimensions are nominal Device OPA2341DGSA/250 Package Package Pins Type Drawing VSSOP DGS 10 SPQ 250 Reel Reel A0 Diameter Width (mm) (mm) W1 (mm) 180.0 12.4 Pack Materials-Page 1 5.3 B0 (mm) K0 (mm) P1 (mm) 3.4 1.4 8.0 W Pin1 (mm) Quadrant 12.
PAGE 15
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) OPA2341DGSA/250 VSSOP DGS 10 250 210.0 185.0 35.
PAGE 16
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.