The ADC121S101 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 ADC121S101 is fully specified over a sample rate range of 500 ksps to 1 Msps. 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 ADC121S101 operates with a single supply with a range from 2.7 V to 5.25 V. Normal power consumption using a 3 V or 5 V supply is 2 mW and 10 mW, respectively. The power-down feature reduces the power consumption to as low as 2.6 µW using a 5-V supply.
The ADC121S101 is packaged in 6-pin WSON and SOT-23 packages. Operation over the temperature range of 40°C to 125°C is specified.
|Sample Rate (Max) (kSPS)|
|Number of input channels|
|Operating temperature range (C)|
|Approx. price (US$)|
|Power consumption (Typ) (mW)|
|Package size: mm2:W x L (PKG)|
|Input range (Max) (V)|
|Input range (Min) (V)|
|Analog voltage AVDD (Min) (V)|
|Analog voltage AVDD (Max) (V)|
|Digital supply (Min) (V)|
|Digital supply (Max) (V)|
|INL (Max) (+/-LSB)|
|THD (Typ) (dB)|
Microwire (Serial I/O)
|-40 to 125|
|SOT-23 | 6|
|2.27 | 1ku|
|6SOT-23: 8 mm2: 2.8 x 2.9 (SOT-23 | 6)|