The AD9949 is a highly integrated CCD signal processor for digital still camera applications. Specified at pixel rates of up to 36 MHz, the AD9949 consists of a complete analog front end with A/D conversion, combined with a programmable timing driver. The Precision Timing ™ core has a resolution of less than 600 ps.
The AD9949 integrates a 12‑bit, 36 MSPS analog‑to‑digital converter, correlated double sampler, pixel gain (0‑18 dB) and variable gain (6‑42 dB) amplifiers, and a precision timing core with sub‑600 ps resolution. It is packaged in a 40‑lead LFCSP and operates from 2.7‑3.6 V supplies.
The device supports CCD line lengths over 4096 pixels, provides high‑speed horizontal and reset‑gate drivers, and is programmed via a 3‑wire serial interface. Absolute maximum ratings, thermal characteristics, and detailed pin functions are documented for reliable system design.
| Operating Temperature Range | -20 °C to +85 °C |
|---|---|
| Maximum Clock Rate | 36 MHz |
| Power Supply Voltage (AVDD, TCVDD, HVDD, RGVDD, DRVDD, DVDD) | 2.7 V to 3.6 V |
| ADC Resolution | 12 bits |
| Pixel Gain Amplifier Range | 0 dB to 18 dB |
| Variable Gain Amplifier Range | 6 dB to 42 dB |
| Power Dissipation (36 MHz, HVDD=RGVDD=3 V, 100 pF load) | 320 mW |
| Maximum Output Current (Programmable) | 30 mA |
The device operates from –20 °C to +85 °C.
The AD9949 can run at a maximum clock rate of 36 MHz.
The integrated ADC provides 12‑bit resolution.
It is programmed using a 3‑wire serial interface.