INA129-EP Texas instruments

INA129-EP

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INA129-EP

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Описание

The INA129-EP device is a low power, general-purpose instrumentation amplifier offering excellent accuracy. The versatile 3-op amp design and small size make the device ideal for a wide range of applications. Current-feedback input circuitry provides wide bandwidth even at high gain (200 kHz at G = 100). A single external resistor sets any gain from 1 to 10,000. The INA129-EP provides an industry-standard gain equation; the INA129-EP gain equation is compatible with the AD620. The INA129-EP device is laser trimmed for very low offset voltage, drift, and high common-mode rejection (113 dB at G ≥ 100). It operates with power supplies as low as ±2.25 V, and quiescent current is only 750 µA–ideal for battery operated systems. Internal input protection can withstand up to ±40 V without damage. The INA129-EP is available in a 8-Pin SOIC surface-mount package specified for the 55°C to 125°C temperature range.

Low Offset Voltage
Low Input Bias Current
High CMR: 95 dB (Typical)
Inputs Protected to ±40 V
Wide Supply Range: ±2.25 V to ±18 V
Low Quiescent Current: 2 mA (Typical)
APPLICATIONS
- Bridge Amplifier
- Thermocouple Amplifier
- RTD Sensor Amplifier
- Medical Instrumentation
- Data Acquisition
- Supports Extreme Temperature Applications:
  - Controlled Baseline
  - One Assembly and Test Site
  - One Fabrication Site
  - Available in Military (–55°C to +125°C)
    Temperature Range⁽¹⁾
  - Extended Product Life Cycle
  - Extended Product-Change Notification
  - Product Traceability

⁽¹⁾ Custom temperature ranges available
All other trademarks are the property of their respective owners

Number of channels	1
Vs (max) (V)	36
Vs (min) (V)	4.5
Input offset (±) (max) (µV)	100
Voltage gain (min) (V/V)	1
Voltage gain (max) (V/V)	10000
Noise at 1 kHz (typ) (nV√Hz)	8
Features	Current Feedback, Overvoltage protection
CMRR (min) (dB)	113
Input offset drift (±) (max) (V/°C)	0.00015
Input bias current (±) (max) (nA)	8
Iq (typ) (mA)	0.7
Bandwidth at min gain (typ) (MHz)	1.3
Gain error (±) (max) (%)	0.65
Operating temperature range (°C)	-55 to 125
Rating	HiRel Enhanced Product
Type	Resistor
Gain nonlinearity (±) (max) (%)	0.0055
Output swing headroom (to negative supply) (typ) (V)	0.8
Output swing headroom (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 to 10 Hz (typ) (µVPP)	0.2