The AD783 is a high speed, monolithic sample-and-hold amplifier (SHA). The AD783 offers a typical acquisition time of 250 ns to 0.01%. The AD783 is specified and tested for hold mode total harmonic distortion with input frequencies up to 100 kHz. The AD783 is configured as a unity gain amplifier and uses a patented self-correcting architecture that minimizes hold mode errors and ensures accuracy over temperature. The AD783 is self-contained and requires no external components or adjustments. The AD783 retains the held value with a droop rate of 0.02μV/μs.
The AD783 is a monolithic, high‑speed sample‑and‑hold amplifier designed for 12‑ and 14‑bit ADC front‑ends. It offers a typical acquisition time of 250 ns to 0.01 % accuracy, a low droop rate of 0.02 pV/µs, and operates from 95 mW typical power. The device is available in J, A, and military temperature grades and in 8‑pin ceramic or SOIC packages.
Its self‑correcting architecture eliminates the need for external components or adjustments, while providing low aperture jitter (20 ps) and fully specified hold‑mode distortion (‑85 dB at 100 kHz). The AD783 is suited for high‑speed data‑acquisition systems and can be directly interfaced to ADCs such as the AD670, AD671, and AD7586.
| Acquisition Time (5 V step to 0.01 %) | 250 ns typical |
|---|---|
| Droop Rate | 0.02 pV/µs |
| Power Consumption | 95 mW typical |
| Input Voltage Range | -2.5 V to +2.5 V |
| Output Drive Current | ±5 mA |
| Small‑Signal Bandwidth | 15 MHz |
| Hold Settling Time (typical) | 150 ns |
| Aperture Jitter (typical) | 20 ps |
The AD783 acquires a 5 V step to 0.01 % accuracy in about 250 ns (typical).
No, the AD783 is self‑contained and requires no external components or adjustments.
The droop rate is specified as 0.02 pV/µs (0.02 V/s).