ADS7809U/1K屬于集成電路（IC）的模數轉換器（ADC）。由美國德州儀器公司制造生產的ADS7809U/1K模數轉換器（ADC）模數轉換器（ADC、A/D 或 A 轉 D）對模擬信號進行采樣，例如由麥克風采集的聲音或傳感器的輸出，然后將其轉換為數字信號。一般來說，數字輸出是二進制補碼二進制數，與輸入成比例。輸入類型可能是差分、偽差分或單端輸入。模數轉換器可按照位數、采樣率、輸入數、接口、轉換器數和架構（例如自適應增量、雙斜率、折疊、流水線、SAR、三角積分、兩步式）進行選擇。

FEATURES

100kHz SAMPLING RATE

86dB SINAD WITH 20kHz INPUT

±2LSB INL

DNL: 16 Bits No Missing Codes

SIX SPECIFIED INPUT RANGES

SERIAL OUTPUT

SINGLE +5V SUPPLY OPERATION

PIN-COMPATIBLE WITH 12-BIT ADS7808

USES INTERNAL OR EXTERNAL

REFERENCE

100mW MAX POWER DISSIPATION

0.3 SO-20

SIMPLE DSP INTERFACE

DESCRIPTION

The ADS7809 is a complete 16-bit sampling Analog-to-

Digital (A/D) converter using state-of-the-art CMOS structures.

It contains a 16-bit capacitor-based Successive Approximation

Register (SAR) A/D converter with sample-andhold,

reference, clock, and a serial data interface. Data can

be outputted using the internal clock, or can be synchronized

to an external data clock. The ADS7809 also provides an

output synchronization pulse for ease of use with standard

DSP processors.

The ADS7809 is specified at a 100kHz sampling rate, and

specified over the full temperature range. Laser-trimmed

scaling resistors provide various input ranges including ±10V

and 0V to 5V, while an innovative design operates from a

single +5V supply, with power dissipation under 100mW.

The ADS7809 is available in a 0.3 SO-20, and is fully

specified for operation over the industrial –40°C to +85°C

range.