Datasheet

2 Introduction
Introduction www.ti.com
The ADS7883 is a 12-bit, 3-MSPS serial-interface ADC. The ADS7884 is a 10-bit, 3-MSPS serial-interface
ADC. The ADS7885 is an 8-bit, 3-MSPS serial-interface ADC. The ADS7886 is a 12-bit, 1-MSPS
serial-interface ADC. The ADS7887 is a 10-bit, 1.25-MSPS serial-interface ADC. The ADS7888 is an 8-bit,
1.25-MSPS ADC. These devices include a capacitor-based successive approximation register (SAR) ADC
with inherent sample-and-hold stages. The serial interface for each ADC is controlled by two signals: chip
select and the serial shift clock. The input signal is sampled with the falling edge of chip select, and the
serial shift clock is used as the conversion and the serial data output clock. Table 1 summarizes the
devices and the respective features.
Table 1. Device Comparision Summary
Device No of Bits MSPS Package
ADS7883 12 3 SOT23-6
ADS7884 10 3 SOT23-6
ADS7885 8 3 SOT23-6
ADS7886 12 1 SOT23-6, SC70
ADS7887 10 1.25 SOT23-6, SC-70
ADS7888 8 1.25 SOT23-6, SC-70
The devices operate from 2.35 V up to 5.25 V, and are available in a 6-pin SOT23 package. Low power
consumption and a small size make these devices ideally suitable for battery-powered, portable
applications. The ADS7886, ADS7887, and ADS7888 are also available in a 6-pin SC70 package. All
device versions are specified for operation from –40 ° C to 125 ° C.
The high level of the digital input to the device is not limited to device VDD. This design means that the
digital input can go as high as 5.25 V when the device supply is 2.35 V. This feature is useful when digital
signals are coming from another circuit with different supply levels.
ADS788xEVM 6 SLAU166B – October 2005 – Revised August 2008
Submit Documentation Feedback