1 Features
1• 1-MHz Sample Rate Serial Device
• 12-Bit Resolution
• Zero Latency
• 20-MHz Serial Interface
• Supply Range: 2.35 V to 5.25 V
• Typical Power Dissipation at 1 MSPS:
– 3.9 mW at 3-V VDD
– 7.5 mW at 5-V VDD
• INL ±1.25 LSB Maximum, ±0.65 LSB (Typical)
• DNL ±1 LSB Maximum, +0.4 / –0.65 LSB (Typical)
• Typical AC Performance:
72.25-dB SINAD, –84-dB THD
• Unipolar Input Range: 0 V to VDD
• Power Down Current: 1 μA
• Wide Input Bandwidth: 15 MHz at 3 dB
• 6-Pin SOT-23 and SC70 Packages

2 Applications
• Base Band Converters in Radio
Communication
• Motor Current and Bus Voltage Sensors in Digital
Drives
• Optical Networking (DWDM, MEMS Based
Switching)
• Optical Sensors
• Battery-Powered Systems
• Medical Instrumentations
• High-Speed Data Acquisition Systems
• High-Speed Closed-Loop Systems

3 Description
The ADS7886 is a 12-bit, 1-MSPS analog-to-digital
converter (ADC). The device includes a capacitor
based SAR A/D converter with inherent sample and
hold. The serial interface in each device is controlled
by the CS and SCLK signals for glueless connections
with microprocessors and DSPs. The input signal is
sampled with the falling edge of CS, and SCLK is
used for conversion and serial data output.
The device operates from a wide supply range from
2.35 V to 5.25 V. The low power consumption of the
device makes it suitable for battery-powered
applications. The device also includes a power down
feature for power saving at lower conversion speeds.
The high level of the digital input to the device is not
limited to device VDD. This means the digital input can
go as high as 5.25 V when device supply is 2.35 V.
This feature is useful when digital signals are coming
from other circuit with different supply levels. Also this
relaxes restriction on power-up sequencing.
The ADS7886 is available in 6-pin SOT-23 and SC70
packages and is specified for operation from –40°C to
125°C.