Product Details

describe:

The INA128-HT and INA129-HT are low power, general purpose instrumentation amplifiers that provide excellent accuracy. The versatile AD22279-A-R2 triple op amp design and small size make it ideal for a variety of applications. The current feedback input circuit provides wide bandwidth even at high gain. A single external resistor can set any gain from 1 to 10000. The INA128-HT provides industry standard gain equations; the INA129-HT gain equations are compatible with the AD620.

The INA128-HT and INA129-HT are laser trimmed for very low offset voltage (25 μV typ) and high common-mode rejection (93 dB for G ≥ 100). These devices typically operate from supplies as low as ±2.25 V and 2 mA of quiescent current. Internal input protection withstands voltages up to ±40 V without damage.

Texas Instruments' high temperature products use highly optimized silicon (die) solutions with design and process improvements to maximize performance over extended temperature ranges.

The INA129-HT is available in 8-lead ceramic DIP and 8-lead ceramic surface mount packages and is specified over the temperature range of –55°C to 210°C. The INA128-HT is available in an 8-lead SOIC-8 surface mount package and is suitable for the –55°C to 175°C temperature range.

characteristic:

●Low offset voltage: typ. 25 uV

●Low input bias current: 50 nA typical(1)

●High CMR: 95 dB typical(1)

●Input protected to ±40 V

●Wide power supply range: ±2.25V to ±18V

●Low quiescent current: 2 mA typical(1)

●Apply

○Bridge amplifier

○ Thermocouple amplifier

○RTD sensor amplifier

○Medical equipment

○Data collection

○ Support extreme temperature applications:

◆Controlled Baseline

◆ An assembly/test site

◆A manufacturing site

Can be used in extreme temperature ranges (–55°C to 210°C)(2)

◆Extend product life cycle

◆Extended Product Change Notification

◆Product traceability

(1) Typical values for 210°C applications.

(2) Custom temperature range available.

parameter:

Number of channels (#): 1

Vs (max) (V): 36

Vs (min) (V): 4.5

Input Offset (+/-) (Max) (uV): 125

Gain (Min) (V/V): 1

Gain (Max) (V/V): 10000

Noise at 1 kHz (typ.) (nV/rt (Hz)): 8

Features: current feedback, overvoltage protection

CMRR (min) (dB): 113

Input Offset Drift (+/-) (Max) (uV/C): 1

Input Bias Current (+/-) (Max) (nA): 10

Iq (typ) (mA): 2

Minimum Gain Bandwidth (Typ) (MHz): 1.3

Gain Error (+/-) (Max) (%): 0.7

Operating temperature range (°C): -55 to 210

Type: Resistor

Output Swing Headroom (to Negative Supply) (typ) (V): 0.8

Output Swing Margin (to positive supply) (typ) (V): -0.9

Input Common Mode Headroom (to Negative Supply) (typ) (V): 1.7

Input Common Mode Headroom (to positive supply) (typ) (V): -1.4

Noise at 0.1 Hz-10 Hz (typ.) (uVpp): 0.2

Gain Nonlinearity (+/-) (Max) (%): 0.002