INA2331 AMPLIFIERS Datasheet

INA2331 Datasheet, PDF, Equivalent


Part Number

INA2331

Description

CMOS INSTRUMENTATION AMPLIFIERS

Manufacture

Burr-Brown

Total Page 22 Pages
Datasheet
Download INA2331 Datasheet


INA2331
INA331
INA2331 ®
INA331
INA2331
SBOS215C – DECEMBER 2001 – REVISED APRIL 2005
Low-Power, Single-Supply, CMOS
INSTRUMENTATION AMPLIFIERS
FEATURES
q DESIGNED FOR LOW COST
q HIGH GAIN ACCURACY: G = 5, 0.02%, 2ppm/°C
q GAIN SET WITH EXT. RESISTORS FOR > 5V/V
q LOW OFFSET VOLTAGE: ±250µV
q HIGH CMRR: 94dB DC, 50dB at 45kHz
q LOW BIAS CURRENT: 0.5pA
q BANDWIDTH, SLEW RATE: 2.0MHz, 5V/µs
q RAIL-TO-RAIL OUTPUT SWING: (V+) – 0.02V
q WIDE TEMPERATURE RANGE: –55°C to +125°C
q LOW QUIESCENT CURRENT: 490µA max/chan
q SHUT DOWN: 0.01µA
q MSOP-8 SINGLE AND TSSOP-14 DUAL PACKAGES
APPLICATIONS
q INDUSTRIAL SENSOR AMPLIFIERS:
Bridge, RTD, Thermocouple, Position
q PHYSIOLOGICAL AMPLIFIERS:
ECG, EEG, EMG
q A/D CONVERTER SIGNAL CONDITIONING
q DIFFERENTIAL LINE RECEIVERS WITH GAIN
q FIELD UTILITY METERS
q PCMCIA CARDS
q AUDIO AMPLIFIERS
q COMMUNICATION SYSTEMS
q TEST EQUIPMENT
q AUTOMOTIVE INSTRUMENTATION
DESCRIPTION
The INA331 and INA2331 are rail-to-rail output, low-power
CMOS instrumentation amplifiers that offer wide range, single-
supply operation as well as bipolar-supply operation. The
INA331 family provides low-cost, low-noise amplification of
differential signals with a low quiescent current of 415µA
(dropping to 0.01µA when shutdown). Returning to normal
operation within microseconds, this INA can be used for
battery or multi-channel applications.
Configured internally in a gain of 5V/V, the INA331 offers
flexibility in higher gains by choosing external resistors.
The INA331 rejects line noise and its harmonics, because
common-mode error remains low even at higher frequencies.
High bandwidth and slew rate makes the INA331 ideal for
directly driving sampling Analog-to-Digital (A/D) converters
as well as general-purpose applications.
With high precision, low cost, and small packages, the
INA331 outperforms discrete designs. They are specified for
a wide temperature range of –55°C to +125°C.
R1 R2
VREF
VIN
VIN+
G = 5 + (5R2/R1)
40k
10k
10k
A1
40k
A2
RG
INA331
A3 VOUT
INA2331
Ch A
Ch B
V+ V
Shutdown
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.
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.
www.ti.com
Copyright © 2001-2005, Texas Instruments Incorporated

INA2331
ABSOLUTE MAXIMUM RATINGS(1)
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 .................................................. 55°C to +125°C
Storage Temperature ...................................................... 65°C to +150°C
Junction Temperature ...................................................................... 150°C
Lead Temperature (soldering, 10s) ................................................. 300°C
NOTES: (1) Stresses above these ratings may cause permanent damage.
Exposure to absolute maximum conditions for extended periods may degrade
device reliability. (2) Input terminals are diode-clamped to the power-supply rails.
Input signals that can swing more than 0.5V beyond the supply rails should be
current limited to 10mA or less. (3) Short-circuit to ground, one amplifier per
package.
ELECTROSTATIC
DISCHARGE SENSITIVITY
This integrated circuit can be damaged by ESD. Texas Instru-
ments 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. Precision integrated circuits may be
more susceptible to damage because very small parametric
changes could cause the device not to meet its published
specifications.
PACKAGE/ORDERING INFORMATION(1)
PRODUCT
PACKAGE-LEAD
PACKAGE
DESIGNATOR
PACKAGE
MARKING
Single
INA331IDGK
INA331AIDGK
MSOP-8
MSOP-8
DGK
DGK
C31
C31
Dual
INA2331AIPW
TSSOP-14
PW
2331A
NOTES: (1) For the most current package and ordering information, see the Package Option Addendum at the end of this document, or see the TI website at
www.ti.com.
PIN CONFIGURATION
Top View
INA331
RG 1
VIN2
VIN+ 3
V4
8 Shutdown
7 V+
6 VOUT
5 REF
MSOP-8 (DGK)
INA2331
RGA 1
VINA
VIN+A
V
2
3
4
VIN+B
VINB
RGB
5
6
7
14 Shutdown A
13 VOUTA
12 REFA
11 V+
10 REFB
9 VOUTB
8 Shutdown B
Dual, TSSOP-14 (PW)
2 INA331, INA2331
www.ti.com
SBOS215C


Features INA331 INA2331 ® INA331 INA2331 SBOS 215C – DECEMBER 2001 – REVISED APRI L 2005 Low-Power, Single-Supply, CMOS I NSTRUMENTATION AMPLIFIERS FEATURES q D ESIGNED FOR LOW COST q HIGH GAIN ACCURA CY: G = 5, 0.02%, 2ppm/°C q GAIN SET W ITH EXT. RESISTORS FOR > 5V/V q LOW OFF SET VOLTAGE: ±250µV q HIGH CMRR: 94dB DC, 50dB at 45kHz q LOW BIAS CURRENT: 0.5pA q BANDWIDTH, SLEW RATE: 2.0MHz, 5 V/µs q RAIL-TO-RAIL OUTPUT SWING: (V+) – 0.02V q WIDE TEMPERATURE RANGE: 55°C to +125°C q LOW QUIESCENT CURRE NT: 490µA max/chan q SHUT DOWN: 0.01µ A q MSOP-8 SINGLE AND TSSOP-14 DUAL PAC KAGES APPLICATIONS q INDUSTRIAL SENSOR AMPLIFIERS: Bridge, RTD, Thermocouple, Position q PHYSIOLOGICAL AMPLIFIERS: E CG, EEG, EMG q A/D CONVERTER SIGNAL CON DITIONING q DIFFERENTIAL LINE RECEIVERS WITH GAIN q FIELD UTILITY METERS q PCM CIA CARDS q AUDIO AMPLIFIERS q COMMUNIC ATION SYSTEMS q TEST EQUIPMENT q AUTOMO TIVE INSTRUMENTATION DESCRIPTION The I NA331 and INA2331 are rail-to-rail output, low-power CMOS instrumentation amplif.
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