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ICL7650CPA from MAXIM,MAXIM - Dallas Semiconductor

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ICL7650CPA

Manufacturer: MAXIM, INTERSIL

Chopper-Stabilized Op Amps

Partnumber Manufacturer Quantity Availability
ICL7650CPA MAXIM, INTERSIL 350 In Stock

Description and Introduction

Chopper-Stabilized Op Amps The ICL7650CPA is a precision chopper-stabilized operational amplifier manufactured by **INTERSIL** (now part of **Renesas Electronics**). Below are its key specifications, descriptions, and features based on factual information:  

### **Specifications:**  
- **Supply Voltage Range:** ±1.5V to ±8V  
- **Input Offset Voltage:** 0.7µV (typical)  
- **Input Bias Current:** 10pA (typical)  
- **Input Offset Current:** 5pA (typical)  
- **Gain Bandwidth Product:** 2MHz (typical)  
- **Slew Rate:** 1.6V/µs (typical)  
- **Common-Mode Rejection Ratio (CMRR):** 120dB (typical)  
- **Power Supply Rejection Ratio (PSRR):** 120dB (typical)  
- **Operating Temperature Range:** 0°C to +70°C (commercial grade)  
- **Package:** 8-Pin PDIP (Plastic Dual In-Line Package)  

### **Description:**  
The **ICL7650CPA** is a **chopper-stabilized operational amplifier** designed for applications requiring ultra-low offset voltage, low drift, and high precision. It uses **auto-zeroing technology** to minimize offset voltage and drift over time and temperature.  

### **Features:**  
- **Ultra-Low Offset Voltage:** 0.7µV (typical)  
- **Low Drift:** 0.01µV/°C (typical)  
- **Low Input Bias Current:** 10pA (typical)  
- **High CMRR & PSRR:** 120dB (typical)  
- **Wide Supply Range:** ±1.5V to ±8V  
- **Chopper-Stabilized Design:** Eliminates 1/f noise and drift  
- **No External Capacitors Required** for auto-zeroing  

This amplifier is commonly used in **precision instrumentation, medical equipment, strain gauge amplifiers, and low-level signal conditioning** applications.  

(Note: The ICL7650CPA is an older part, and availability may vary as INTERSIL was acquired by Renesas.)

Application Scenarios & Design Considerations

Chopper-Stabilized Op Amps

Alternative Part Number

  • LTC1050CN8 --: Pin-compatible zero-drift chopper-stabilized op amp with similar low offset and low drift, direct drop-in for many ICL7650 sockets.
  • TLC2650CP --: Chopper-stabilized operational amplifier in DIP-8 with comparable ultra-low offset voltage and low input bias current, suitable functional replacement.
  • MAX430CPA --: Same manufacturer family of low-offset op amps in DIP-8 package, offering similar precision performance for less demanding chopper applications.
  • LTC1052CN8 --: Pin-compatible chopper-stabilized op amp with very low offset voltage, direct functional replacement for the ICL7650 in DIP-8.
  • MAX7650CPA --: Chopper-stabilized operational amplifier with comparable ultra-low offset and drift specifications, suitable drop-in substitute.

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