The ADA4800 is a voltage buffer integrated with an active load. The buffer is a low power, high speed, low noise, high slew rate, fast settling, fixed gain of 1 monolithic amplifier.
The ADA4800 is a voltage buffer with an integrated active load, designed for CCD image sensor output buffering in digital cameras and camcorders. It offers a fixed gain of 1, very low static power consumption (as low as 20 mW), and a high slew rate of 415 V/µs.
The device operates from 4 V to 17 V supply, supports an industrial temperature range of –40 °C to +85 °C, and is packaged in a 1.6 mm × 1.6 mm × 0.55 mm 6‑lead LFCSP. Bandwidth and active‑load current are adjustable via the IDRV and ISF pins, and a power‑save mode can further reduce current draw.
| Gain | 1 (fixed) |
|---|---|
| Bandwidth | 400 MHz (‑3 dB) |
| Slew Rate | 415 V/µs |
| Static Power Consumption | 20 mW |
| Supply Voltage Range | 4 V to 17 V (18 V absolute max) |
| Operating Temperature Range | ‑40 °C to +85 °C |
| Package Size | 1.6 mm × 1.6 mm × 0.55 mm |
| Thermal Resistance (θJA) | 160 °C/W (6‑lead LFCSP) |
The device consumes as low as 20 mW of static power.
Bandwidth is adjusted by changing the resistance on the IDRV pin, which sets the quiescent current.
The absolute maximum rating for supply voltage is 18 V, while normal operation is specified from 4 V to 17 V.