AD9640 is a 14-bit, 80/105/125/150 MSPS, 1.8 V dual analog-to-digital converter with low power, flexible analog input range, integrated ADC voltage reference, integrated ADC sample-and-hold inputs, high bandwidth differential analog inputs, ADC clock duty cycle stabilizer, 95 dB channel isolation/crosstalk, serial port control, user-configurable, built-in self-test (BIST) capability, energy-saving power-down modes, and integrated receive features.
The AD9640 is a dual 14‑bit analog‑to‑digital converter capable of sampling at 80, 105, 125 or 150 MSPS. It operates from a single 1.8 V analog supply and supports both 1.8‑3.3 V CMOS and 1.8 V LVDS output drivers. The device includes fast over‑range detection, a programmable signal monitor, and a 3‑bit SPI‑compatible serial interface for configuration.
The datasheet provides detailed electrical specifications, pin configurations, timing diagrams, and design guidelines for power distribution, grounding, and layout. Application information covers communications, software‑defined radios, and broadband data systems, while the ordering guide lists package options and part numbers.
| Resolution | 14 bits |
|---|---|
| Maximum Sample Rate | 150 MSPS |
| Supply Voltages | AVDD 1.8 V, DVDD 1.8 V, DRVDD 3.3 V (CMOS) or 1.8 V (LVDS) |
| Input Voltage Span | 2 V p‑p differential |
| Power Consumption (DC Input) | 452‑657 mW depending on sample rate |
| Standby Power | 52‑68 mW |
The AD9640 can sample at up to 150 MSPS.
It requires AVDD = 1.8 V, DVDD = 1.8 V, and DRVDD = 3.3 V for CMOS mode (or 1.8 V for LVDS mode).
The differential input range is 2 V peak‑to‑peak (1 V to 2 V p‑p).
Standby power is between 52 mW and 68 mW.