SD2140-14
14-bit, 25MHz, Dual Channel ADC
Overview & Features
The SD2140 is a dual-channel, 14-bit, analog-to-digital converter (ADC) supporting sampling rates up to 25MSps. The device uses a multistage pipeline architecture to achieve high signal-to-noise ratio (SNR) and linearity, over wide input signal bandwidth. The SD2140 can be set to operate using either CMOS or LVDS output interface. Programming for configuration and control is accomplished using a 4-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: 74.6dBFS at fIN = 30.2MHz and fS = 25MSps
* SFDR: 89.1dBc at fIN = 30.2MHz and fS = 25MSps
* -147.4dBFS/Hz input-noise at fIN = 30.2MHz and fS = 25MSps
* 2.0V nominal input
* Typical power consumption: 295mW at 25MSps
* Integer 1-to-8 input clock divider (200MHz maximum input rate)
* Sample rates of up to 25MSps
* 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 | 14-bit | Speed (Msps) | 25 |
| Number of Channels | 2 | SFDR (dBc)@70.2MHz | 89.1 |
| SNR (dBFS)@70.2MHz | 74.6 | ||
| Drop-in Replacement | Replacement Part # | Plural Price ($) | Replacement Part Price | Package |
|---|---|---|---|---|
| Yes | LTC2140-14 | $15.33 | $21.90 | 64 pins (9x9 package) |