Monolithic Sample and Hold Circuit The LF398AN is a monolithic sample-and-hold integrated circuit manufactured by National Semiconductor (NS). Below are its specifications, descriptions, and features:
### **Specifications:**
- **Manufacturer:** National Semiconductor (NS)
- **Type:** Sample-and-Hold IC
- **Operating Voltage:** ±5V to ±18V
- **Hold Capacitor:** External (typically 0.01µF to 1µF)
- **Acquisition Time:** 6µs (typical, with 0.01µF capacitor)
- **Droop Rate:** 0.5mV/ms (typical, with 1µF capacitor)
- **Gain Bandwidth:** 1MHz (typical)
- **Input Offset Voltage:** ±3mV (max)
- **Input Bias Current:** 30nA (max)
- **Operating Temperature Range:** -25°C to +85°C
- **Package:** 8-pin DIP (Dual In-line Package)
### **Descriptions:**
The LF398AN is a precision sample-and-hold amplifier designed for high-speed data acquisition systems. It features low droop rate, fast acquisition time, and high accuracy, making it suitable for analog-to-digital conversion, signal processing, and instrumentation applications.
### **Features:**
- **Low Droop Rate:** Minimizes voltage decay during hold mode.
- **High Speed:** Fast acquisition time for dynamic signal sampling.
- **Wide Operating Voltage Range:** Supports ±5V to ±18V supplies.
- **Low Input Bias Current:** Reduces errors in high-impedance circuits.
- **Internal Hold Capacitor Isolation:** Improves hold-mode performance.
- **TTL, PMOS, and CMOS Compatible Logic Inputs:** Ensures easy interfacing with digital systems.
- **Monolithic Construction:** Provides reliability and stability.
This information is based on the manufacturer's datasheet and technical documentation.
