0
ACTIVE
Resolution (Bits) |
12 |
Sample rate (max) (ksps) |
200 |
Number of input channels |
1 |
Interface type |
Microwire (Serial I/O), SPI |
Architecture |
SAR |
Input type |
Single-ended |
Rating |
Catalog |
Reference mode |
Supply |
Input voltage range (max) (V) |
5.25 |
Input voltage range (min) (V) |
0 |
Features |
Small Size |
Operating temperature range (°C) |
-40 to 85 |
Power consumption (typ) (mW) |
1.5 |
Analog supply voltage (min) (V) |
2.7 |
Analog supply voltage (max) (V) |
5.25 |
SNR (dB) |
72.3 |
Digital supply (min) (V) |
2.7 |
Digital supply (max) (V) |
5.25 |
SOT-23 (DBV)-6-8.12 mm² 2.9 x 2.8
The ADC121S021 device is a low-power, single-channel CMOS 12-bit analog-to-digital converter with a high-speed serial interface. Unlike the conventional practice of specifying performance at a single sample rate only, the ADC121S021 is fully specified over a sample rate range of 50 ksps to 200 ksps. The converter is based upon a successive-approximation register architecture with an internal track-and-hold circuit.
The output serial data is straight binary, and is compatible with several standards, such as SPI™, QSPI™, MICROWIRE, and many common DSP serial interfaces.
The ADC121S021 operates with a single supply that can range from 2.7 V to 5.25 V. Normal power consumption using a 3.6-V or 5.25-V supply is 1.5 mW and 7.9 mW, respectively. The power-down feature reduces the power consumption to as low as 2.6 µW using a 5.25-V supply.
The ADC121S021 is packaged in 6-pin WSON and SOT-23 packages. Operation over the industrial temperature range of 40°C to 85°C is ensured.
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