SD9231-20
12-bit, 20MHz, Dual Channel ADC
Overview & Features
The SD9231 is a dual-channel, 12-bit, analog-to-digital converter (ADC) supporting sampling rates up to 20MSps. The device uses a multistage pipeline architecture to achieve high signal-to-noise ratio (SNR) and linearity, over wide input signal bandwidth. The SD9231 can be set to operate using either CMOS or LVDS output interface. Programming for configuration and control is accomplished using a 3-wire SPI-compatible serial bus. The digital output data can be programmed to be delivered in offset binary, twos complement format, or gray code.
Features
* SNR: 71.5dBFS at fIN = 30.2MHz and fS = 20MSps
* SFDR: 86.3dBc at fIN = 30.2MHz and fS = 20MSps
* -142.2dBFS/Hz input-noise at fIN = 30.2MHz and fS = 20MSps
* 2.0V nominal input
* Typical power consumption: 290mW at 20MSps
* Integer 1-to-8 input clock divider (160MHz maximum input rate)
* Sample rates of up to 20MSps
* 1.8V analog supply voltage
* LVDS (ANSI-644 levels) outputs
* Internal ADC voltage reference
* ADC clock duty cycle correction
* Serial port control
* Energy saving power-down modes
Specification
| Product Specifications | |||
|---|---|---|---|
| Resolution | 12-bit | Speed (Msps) | 20 |
| Number of Channels | 2 | SFDR (dBc)@70.2MHz | 86.3 |
| SNR (dBFS)@70.2MHz | 71.5 | ||
| Drop-in Replacement | Replacement Part # | Plural Price ($) | Replacement Part Price | Package |
|---|---|---|---|---|
| Yes | AD9231-20 | $9.26 | $13.23 | 64 pins (9x9 package) |