MDC97477 3-3.6V 1Msps, 72dB SNR, 12-/10-/8-Bit ADCs in 6-Lead TSOT-23 Package

MDC97477 3-3.6V 1Msps, 72dB SNR, 12-/10-/8-Bit ADCs in 6-Lead TSOT-23 Package

The MDC97476, MDC97477, and MDC97478 are 12-bit, 10-bit, and 8-bit (respectively), high- speed, low-power, successive-approximation analog-to-digital converters (SAR ADCs).

Key Specifications

Features

• 12-/10-/8-Bit Successive-Approximation Analog-to-Digital Converter (SAR ADC)
• Conversion Rate up to 1Msps
• Single 3V to 3.6V Power Supply
• Low Power: 4.3mW at 1Msps with a 3.3V Power Supply
• MDC97476: 72dB Signal-to-Noise Ratio (SNR) at 120kHz Input Frequency
• Reference Derived from Power Supply
• Serial Peripheral Interface (SPI)-Compatible Serial Interface
• Available in a TSOT-23-6 Package

Typical Application Circuit

Applications

• Battery-Powered Systems
• Medical Instruments
• Instrumentation and Control Systems
• Portable Systems
• Data Acquisition Systems

Design Notes

• Effective resolution depends on the reference and the input drive, not on the bit count alone.
• Keep the analog input RC close to the pin and match source impedance between channels to avoid crosstalk.
• Digital activity couples into the analog front end; separate the return paths under the device.
• Verify settling against the sample rate for multiplexed inputs.

Common Questions