ADC121S021 Series

Single Channel, 50 to 200 ksps, 12-Bit A/D Converter

Catalog(3 parts)

Part	Number of A/D Converters▲▼	Architecture	Number of Inputs▲▼	Mounting Type	Sampling Rate (Per Second)	Voltage - Supply, Digital▲▼	Voltage - Supply, Digital▲▼	Supplier Device Package	Configuration	Ratio - S/H:ADC	Reference Type	Data Interface	Operating Temperature▲▼	Operating Temperature▲▼	Input Type	Number of Bits▲▼	Voltage - Supply, Analog▲▼	Voltage - Supply, Analog▲▼	Package / Case
Texas Instruments ADC121S021CISDX/NOPB 12 Bit Analog to Digital Converter 1 Input 1 SAR 6-WSON (2.2x2.5)	1 ul	SAR	1 ul	Surface Mount	200k	5.25 V	2.700000047683716 V	6-WSON (2.2x2.5)	S/H-ADC	1:1	Supply	DSP, SPI	-40 °C	85 °C	Single Ended	12 ul	2.700000047683716 V	5.25 V
Texas Instruments ADC121S021CISD/NOPB 12 Bit Analog to Digital Converter 1 Input 1 SAR 6-WSON (2.2x2.5)	1 ul	SAR	1 ul	Surface Mount	200k	5.25 V	2.700000047683716 V	6-WSON (2.2x2.5)	S/H-ADC	1:1	Supply	DSP, SPI	-40 °C	85 °C	Single Ended	12 ul	2.700000047683716 V	5.25 V
Texas Instruments ADC121S021CIMFX/NOPB 12 Bit Analog to Digital Converter 1 Input 1 SAR SOT-23-6	1 ul	SAR	1 ul	Surface Mount	200k	5.25 V	2.700000047683716 V	SOT-23-6	S/H-ADC	1:1	Supply	DSP, SPI	-40 °C	85 °C	Single Ended	12 ul	2.700000047683716 V	5.25 V	SOT-23-6

Key Features

• Specified Over a Range of Sample RatesVariable Power ManagementSingle Power Supply With 2.7-V to 5.25-V RangeCompatible With the SPI, QSPI, MICROWIRE, and DSPKey Specifications:DNL: 0.45 and –0.25 LSB (Typical)INL: 0.45 and –0.4 LSB (Typical)SNR: 72.3 dB (Typical)Power Consumption3.6-V Supply: 1.5 mW (Typical)5.25-V Supply: 7.9 mW (Typical)Specified Over a Range of Sample RatesVariable Power ManagementSingle Power Supply With 2.7-V to 5.25-V RangeCompatible With the SPI, QSPI, MICROWIRE, and DSPKey Specifications:DNL: 0.45 and –0.25 LSB (Typical)INL: 0.45 and –0.4 LSB (Typical)SNR: 72.3 dB (Typical)Power Consumption3.6-V Supply: 1.5 mW (Typical)5.25-V Supply: 7.9 mW (Typical)

Description

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. 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.