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INA116PA from BB

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INA116PA

Manufacturer: BB

Ultra Low Input Bias Current INSTRUMENTATION AMPLIFIER

Partnumber Manufacturer Quantity Availability
INA116PA BB 75 In Stock

Description and Introduction

Ultra Low Input Bias Current INSTRUMENTATION AMPLIFIER The INA116PA is a precision instrumentation amplifier manufactured by Texas Instruments (BB). Here are its key specifications, descriptions, and features:

### **Specifications:**  
- **Supply Voltage Range:** ±2.25V to ±18V  
- **Input Offset Voltage:** 50µV (max)  
- **Input Bias Current:** 3fA (typ)  
- **Gain Range:** 1 to 10,000 (set by external resistor)  
- **Common-Mode Rejection Ratio (CMRR):** 115dB (min)  
- **Bandwidth:** 200kHz (G = 100)  
- **Slew Rate:** 0.5V/µs  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 8-Pin PDIP (Plastic DIP)  

### **Descriptions:**  
- The INA116PA is a low-power, high-precision instrumentation amplifier designed for applications requiring ultra-low input bias current.  
- It features a guard drive output to minimize leakage currents, making it ideal for high-impedance sensor applications.  
- The amplifier is optimized for use in medical, industrial, and test equipment where signal integrity is critical.  

### **Features:**  
- **Ultra-Low Input Bias Current:** 3fA (typ)  
- **Low Offset Voltage:** 50µV (max)  
- **High CMRR:** 115dB (min)  
- **Wide Supply Range:** ±2.25V to ±18V  
- **Guarded Inputs:** Reduces leakage currents  
- **External Gain Setting:** Adjustable via a single resistor  
- **Low Power Consumption:** 1.8mA (max) supply current  

This information is based on Texas Instruments' datasheet for the INA116PA.

Application Scenarios & Design Considerations

Ultra Low Input Bias Current INSTRUMENTATION AMPLIFIER

Alternative Part Number

  • AD549JH --: Ultra-low input bias current electrometer op-amp, functionally similar to the INA116 instrumentation amplifier for high-impedance sensor applications.
  • LMP7721MA --: Femtoampere input bias current op-amp suitable for electrometer-grade front ends, a practical substitute where the INA116's ultra-low bias current is the key requirement.
  • AD823AN --: Low bias current FET-input instrumentation amplifier in a similar DIP package, usable as a drop-in style replacement for general high-impedance signal conditioning.
Partnumber Manufacturer Quantity Availability
INA116PA TI 25 In Stock

Description and Introduction

Ultra Low Input Bias Current INSTRUMENTATION AMPLIFIER The INA116PA is a precision instrumentation amplifier manufactured by Texas Instruments (TI).  

### **Specifications:**  
- **Supply Voltage Range:** ±2.25V to ±18V  
- **Input Offset Voltage:** 50µV (max)  
- **Input Bias Current:** 3fA (typ)  
- **Common-Mode Rejection Ratio (CMRR):** 120dB (min)  
- **Gain Bandwidth Product:** 200kHz  
- **Quiescent Current:** 350µA (max)  
- **Operating Temperature Range:** -40°C to +85°C  
- **Package:** 8-Pin PDIP (Plastic Dual In-Line Package)  

### **Descriptions:**  
The INA116PA is a low-power, high-precision instrumentation amplifier designed for applications requiring ultra-low input bias current. It is ideal for use with high-impedance sources, such as pH electrodes and other electrochemical sensors.  

### **Features:**  
- **Ultra-Low Input Bias Current:** 3fA (typ)  
- **Low Offset Voltage and Drift:** Ensures high accuracy  
- **Low Power Consumption:** 350µA max quiescent current  
- **Wide Supply Range:** Operates from ±2.25V to ±18V  
- **High CMRR:** 120dB (min) for noise rejection  
- **Internal Gain Set Resistors:** Eliminates external resistors for G=1  
- **Stable with Capacitive Loads:** No external compensation needed  

This amplifier is commonly used in medical instrumentation, chemical analysis, and other precision measurement applications.

Application Scenarios & Design Considerations

Ultra Low Input Bias Current INSTRUMENTATION AMPLIFIER

Alternative Part Number

  • AD549JHZ --: Ultra-low input bias current electrometer op-amp, direct functional equivalent to the INA116 for high-impedance sensor applications.
  • LMP7721MA --: Femtoampere input bias current op-amp from TI, suitable replacement for ultra-low leakage instrumentation designs.
  • AD8231ACPZ --: Low noise, low bias current instrumentation amplifier offering similar precision performance in a different package family.

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