RENESAS HA1-5330-5

The HA-5330 is an extremely fast sample-and-hold amplifier designed primarily for use with high-speed A/D converters. Fabricated using the Harris dielectric isolation process, it achieves an acquisition time of 650ns to 12-bit accuracy with a droop rate of 0.01μV/μs. The circuit consists of an input transconductance amplifier capable of sourcing large charging currents, a low-leakage analog switch, and an integrating output stage incorporating a 90pF hold capacitor. The analog switch operates at virtual ground, so charge injection onto the hold capacitor is constant and independent of the input voltage. A compensation circuit keeps charge injection to a low level; the resulting 0.5mV hold-step error can be trimmed to zero via the offset adjustment terminals if desired. Compensation is also employed to minimize leakage currents that cause voltage droop in hold mode. With reduced supply voltages (down to ±10V), the signal range of the HA-5330 is correspondingly reduced.

• Ultra-fast acquisition time……500ns (0.1%), 650ns (0.01%)
• Low droop rate 0.01μV/μs
• Ultra-low offset 0.2mV
• High slew rate 90V/μs
• Wide supply range ±10V to ±20V
• Internal hold capacitor
• Fully differential input
• TTL/CMOS compatible

• Precision data acquisition systems
• D/A converter deglitching
• Auto-zero circuits
• Peak detectors