The INA128-HT and INA129-HT are low-power, general-purpose instrumentation amplifiers offering excellent accuracy. The versatile three-operational-amplifier design and small size make them ideal for a wide range of applications. Current-feedback input circuitry provides wide bandwidth even at high gain. A single external resistor sets any gain from 1 to 10000. The INA128-HT provides an industry-standard gain equation; the INA129-HT gain equation is 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 at G ≥ 100). These devices operate with power supplies as low as ±2.25 V, and quiescent current of 2 mA, typically. Internal input protection can withstand up to ±40 V without damage.

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

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

• Low Offset Voltage: 25 uV Typical
• Low Input Bias Current: 50 nA Typical(1)
• High CMR: 95 dB Typical(1)
• Inputs Protected to ±40 V
• Wide Supply Range: ±2.25 V to ±18 V
• Low Quiescent Current: 2 mA Typical(1)
• APPLICATIONS
  • Bridge Amplifiers
  • Thermocouple Amplifiers
  • RTD Sensor Amplifiers
  • Medical Instrumentation
  • Data Acquisition
  • Supports Extreme Temperature Applications:
    • Controlled Baseline
    • One Assembly/Test Site
    • One Fabrication Site
    • Available in Extreme Temperature Ranges (–55°C to 210°C)(2)
    • Extended Product Life Cycle
    • Extended Product-Change Notification
    • Product Traceability

(1) Typical values for 210°C application. (2) 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) (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)
• 0.7
• Bandwidth at min gain (Typ) (MHz)
• 1.3
• Gain error (+/-) (Max) (%)
• 0.7
• Operating temperature range (C)
• -55 to 175
• Type
• Resistor
• 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-10 Hz (Typ) (uVpp)
• 0.2
• Gain non-linearity (+/-) (Max) (%)
• 0.002

INA128-HT的完整型号有：INA128HD，以下是这些产品的关键参数及官网采购报价：

INA128HD，工作温度：-55 to 175，封装：SOIC (D)-8，包装数量MPQ：75个，MSL 等级/回流焊峰值温度：Level-3-260C-168 HR，引脚镀层/焊球材料：NIPDAU，TI官网INA128HD的批量USD价格：67.199（1000+）

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