ADS2807Y/250.B中文资料德州仪器数据手册PDF规格书

FEATURES

HIGH SNR: 66dB (2Vp-p), 68dB (3Vp-p)

LOW POWER: 720mW

INTERNAL OR EXTERNAL REFERENCE

LOW DLE: 0.6LSB

FLEXIBLE INPUT RANGE: 2Vp-p to 3Vp-p

TQFP-64 POWER PACKAGE

APPLICATIONS

COMMUNICATIONS IF PROCESSING

COMMUNICATIONS BASESTATIONS

TEST EQUIPMENT

MEDICAL IMAGING

VIDEO DIGITIZING

CCD DIGITIZING

DESCRIPTION

The ADS2807 is a dual, high-speed, high dynamic range,

12-bit pipelined Analog-to-Digital Converter (ADC). This

converter includes a high-bandwidth track-and-hold that

gives excellent spurious performance up to and beyond the

Nyquist rate. The differential nature of this track-and-hold

and ADC circuitry minimizes even-order harmonics and

gives excellent common-mode noise immunity. The trackand-

hold can also be operated single-ended.

The ADS2807 provides for setting the full-scale range of the

converter without any external reference circuitry. The internal

reference can be disabled allowing low-drive, external

references to be used for improved tracking in multichannel

systems.

The ADS2807 provides an over-range indicator flag to

indicate an input signal that exceeds the full-scale input

range of the converter. This flag can be used to reduce the

gain of front-end gain control circuitry. There is also an

output enable pin to allow for multiplexing and testability on

a PC board.

The ADS2807 employs digital error correction techniques to

provide excellent differential linearity for demanding imaging

applications. The ADS2807 is available in a TQFP-64

power package.