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INA155

FEATURES

● RAIL-TO-RAIL OUTPUT SWING: Within 10mV

● LOW OFFSET VOLTAGE: ±200µV

● LOW OFFSET DRIFT: ±5µV/°C

● INTERNAL FIXED GAIN = 10V/V OR 50V/V

● SPECIFIED TEMPERATURE RANGE:

–55°C to +125°C

● LOW INPUT BIAS CURRENT: 0.2pA

● WIDE BANDWIDTH: 550kHz in G = 10

● HIGH SLEW RATE: 6.5V/µs

● LOW COST

● SO-8 AND TINY MSOP-8 PACKAGES

Single-Supply, Rail-to-Rail Output, CMOS

INSTRUMENTATION AMPLIFIER

DESCRIPTION

The INA155 is a low-cost CMOS instrumentation

amplifier with rail-to-rail output swing optimized for

low voltage, single-supply operation.

Wide bandwidth (550kHz in G = 10) and high slew

rate (6.5V/µs) make the INA155 suitable for driving

sampling A/D converters as well as general purpose

and audio applications. Fast settling time allows use

with higher speed sensors and transducers and rapid

scanning data acquisition systems.

APPLICATIONS

● INDUSTRIAL SENSOR AMPLIFIERS

Bridge, RTD, Thermocouple, Flow, Position

● MEDICAL EQUIPMENT

ECG, EEG, EMG Amplifiers

● DRIVING A/D CONVERTERS

● PCMCIA CARDS

● AUDIO PROCESSING

● COMMUNICATIONS

● TEST EQUIPMENT

●

LOW COST AUTOMOTIVE INSTRUMENTATION

International Airport Industrial Park • Mailing Address: PO Box 11400, Tucson, AZ 85734 • Street Address: 6730 S. Tucson Blvd., Tucson, AZ 85706 • Tel: (520) 746-1111

Twx: 910-952-1111 • Internet: http://www.burr-brown.com/ • Cable: BBRCORP • Telex: 066-6491 • FAX: (520) 889-1510 • Immediate Product Info: (800) 548-6132

INA155

For most current data sheet and other product

information, visit www.burr-brown.com

Gain can be set to 10V/V or 50V/V by pin strapping.

Gains between these two values can be obtained with

the addition of a single resistor. The INA155 is fully

specified over the supply range of +2.7 to +5.5V.

The INA155 is available in MSOP-8 and SO-8 sur-

face-mount packages. Both are specified for operation

over the temperature range –55°C to 125°C.

22.2kΩ

200kΩ

–

Ref

INA155

22.2kΩ

5kΩ5kΩ

200kΩ

V+

V–

G = 10 pins open

G = 50 pins connected

= (V

– V

) • G + V

REF

+–

SBOS114

Summary of content (16 pages)

PAGE 1
® INA155 INA 155 INA 155 For most current data sheet and other product information, visit www.burr-brown.
PAGE 2
SPECIFICATIONS: VS = +2.7V to +5.5V Boldface limits apply over the specified temperature range, TA = –40°C to +85°C At TA = +25°C, RL = 10kΩ connected to VS/2. RG pins open (G = 10), and Ref = VS /2, unless otherwise noted. INA155E, U PARAMETER CONDITION INPUT Offset Voltage, RTI Over Temperature Drift vs Power Supply Over Temperature vs Time VOS dVOS/dT PSRR MIN INA155EA, UA TYP VS = +5.0V, VCM = VS/2 ±0.2 VS = +2.7V to +6V, VCM = 0.
PAGE 3
SPECIFICATIONS: 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. RG pins open (G = 10), and Ref = VS /2, unless otherwise noted. INA155E, U PARAMETER CONDITION INPUT Offset Voltage, RTI Over Temperature Drift vs Power Supply Over Temperature vs Time VOS dVOS/dT PSRR MIN INA155EA, UA TYP MAX VS = +5.0V, VCM = VS/2 ±0.2 VS = +2.7V to +6V, VCM = 0.
PAGE 4
ELECTROSTATIC DISCHARGE SENSITIVITY PIN CONFIGURATION Top View SO-8 (U), MSOP-8 (E) RG 1 V– 8 RG IN 2 V+ 7 V+ IN 3 6 VOUT V– 4 5 Ref This integrated circuit can be damaged by ESD. Burr-Brown recommends that all integrated circuits be handled with appropriate precautions. Failure to observe proper handling and installation procedures can cause damage. INA155 ESD damage can range from subtle performance degradation to complete device failure.
PAGE 5
TYPICAL PERFORMANCE CURVES At TA = +25°C, VS = 5.5V, RL = 10kΩ connected to VS/2. RG pins open (G = 10), and Ref = VS /2, unless otherwise noted. COMMON-MODE REJECTION RATIO vs FREQUENCY GAIN vs FREQUENCY 120 40 G = 10 35 100 30 G = 50 80 CMRR (dB) Gain (dB) 25 20 G =10 15 G = 50 60 40 10 20 5 0 0 1 10 100 1k 10k 100k 1M 0.
PAGE 6
TYPICAL PERFORMANCE CURVES (Cont.) At TA = +25°C, VS = 5.5V, RL = 10kΩ connected to VS/2. RG pins open (G = 10), and Ref = VS /2, unless otherwise noted. TOTAL HARMONIC DISTORTION + NOISE vs FREQUENCY INPUT VOLTAGE AND CURRENT NOISE DENSITY vs FREQUENCY 10k 1 100 10 in 100 1 RL = 2kΩ 0.1 THD+N (%) 1k Current Noise (fA/√Hz) Voltage Noise (nV/√Hz) RL = 600Ω en G = 50 RL = 600Ω RL = 10kΩ 0.01 G = 10 RL = 2kΩ 10 0.1 10 1 100 1k 10k RL =10kΩ 0.001 0.
PAGE 7
TYPICAL PERFORMANCE CURVES (Cont.) At TA = +25°C, VS = 5.5V, RL = 10kΩ connected to VS/2. RG pins open (G = 10), and Ref = VS /2, unless otherwise noted. OFFSET VOLTAGE DRIFT PRODUCTION DISTRIBUTION OFFSET VOLTAGE PRODUCTION DISTRIBUTION 18 14 16 Percent of Amplifiers (%) Percent of Amplifiers (%) 12 10 8 6 4 2 14 12 10 8 6 4 2 0 –1 –0.9 –0.8 –0.7 –0.6 –0.5 –0.4 –0.3 –0.2 –0.1 0 0.1 0.2 0.3 0.4 0.5 0.6 0.7 0.8 0.
PAGE 8
TYPICAL PERFORMANCE CURVES (Cont.) At TA = +25°C, VS = 5.5V, RL = 10kΩ connected to VS/2. RG pins open (G = 10), and Ref = VS /2, unless otherwise noted. LARGE-SIGNAL STEP RESPONSE G = 10, G = 50, CL = 100pF, RL = 10kΩ 2mV/div 1V/div 1V/div COMMON-MODE REJECTION AT 60Hz 1µs/div 5ms/div INPUT COMMON-MODE RANGE vs REFERENCE VOLTAGE, G = 10 INPUT COMMON-MODE RANGE vs OUTPUT VOLTAGE, G = 50 6 6 G = 50 5 4 4 VCM (V) 5 3 2 3 Ref = 0V Ref = 2.75V Ref = 5.5V 2 0.9V– + 0.1VREF < VCM < 0.
PAGE 9
APPLICATIONS INFORMATION OPERATING VOLTAGE Figure 1 shows the basic connections required for operation of the INA155. Applications with noisy or high impedance power supplies may require decoupling capacitors close to the device pins as shown. The INA155 is fully specified and guaranteed over the supply range +2.7V to +5.5V, with key parameters guaranteed over the temperature range of –55°C to +125°C.
PAGE 10
SETTING THE GAIN an optional circuit for trimming the output offset voltage. The voltage applied to the Ref terminal is added to the output signal. An op amp buffer is used to provide low impedance at the Ref terminal to preserve good commonmode rejection. Gain of 10 is achieved simply by leaving the two gain pins (1 and 8) open. Gain of 50 is achieved by connecting the gain pins together directly. In the G = 10 configuration, the gain error is less than 0.1%.
PAGE 11
INPUT COMMON-MODE RANGE 1.00 The input common-mode range of the INA155 for various operating conditions is shown the in Typical Performance Curves. The common-mode input range is limited by the output voltage swing of A1, an internal circuit node.
PAGE 12
PACKAGE OPTION ADDENDUM www.ti.
PAGE 13
PACKAGE OPTION ADDENDUM www.ti.com 11-Jul-2013 Orderable Device Status (1) INA155UG4 ACTIVE Package Type Package Pins Package Drawing Qty SOIC D 8 75 Eco Plan Lead/Ball Finish (2) Green (RoHS & no Sb/Br) MSL Peak Temp Op Temp (°C) Device Marking (3) CU NIPDAU Level-2-260C-1 YEAR (4/5) INA 155U (1) The marketing status values are defined as follows: ACTIVE: Product device recommended for new designs.
PAGE 14
PACKAGE MATERIALS INFORMATION www.ti.com 14-Aug-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 INA155E/250 VSSOP DGK 8 250 180.0 12.4 5.3 3.4 1.4 8.0 12.0 Q1 INA155E/2K5 VSSOP DGK 8 2500 330.0 12.4 5.3 3.4 1.4 8.0 12.0 Q1 INA155EA/250 VSSOP DGK 8 250 180.0 12.4 5.3 3.4 1.4 8.0 12.
PAGE 15
PACKAGE MATERIALS INFORMATION www.ti.com 14-Aug-2013 *All dimensions are nominal Device Package Type Package Drawing Pins SPQ Length (mm) Width (mm) Height (mm) INA155E/250 VSSOP DGK 8 250 210.0 185.0 35.0 INA155E/2K5 VSSOP DGK 8 2500 367.0 367.0 35.0 INA155EA/250 VSSOP DGK 8 250 210.0 185.0 35.0 INA155EA/2K5 VSSOP DGK 8 2500 367.0 367.0 35.0 INA155U/2K5 SOIC D 8 2500 367.0 367.0 35.0 INA155UA/2K5 SOIC D 8 2500 367.0 367.0 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.