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ADC121C021CIMM

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Texas Instruments Analog To Digital Converters (ADCs), VSSOP-8-0.65mm. Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Contents

README

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ADC121C021CIMM

Texas Instruments · Analog To Digital Converters (ADCs) · VSSOP-8-0.65mm

ADC121C021CIMM from Texas Instruments, in a VSSOP-8-0.65mm. Pinout and pin descriptions extracted from the manufacturer datasheet (extract_pins, cross-checked by a second model); symbol, footprint, and 3D from KiCad-official CAD.

Pinout

Pin Name Type Function
1 SCL input Serial clock input used with SDA to control data transfer in and out of the device; open-drain line that must be pulled to VA with an external pull-up resistor.
2 ALERT output Open-drain alert output configurable as active high or active low, which must be pulled to the supply (VA) with an external pull-up resistor.
3 ADR0 input Tri-level address selection input that sets bits A0 and A1 of the 7-bit slave address.
4 VIN power_in Analog input that can range from GND to VA.
5 VA power_in Power supply and unbuffered reference voltage (+2.7V to +5.5V), which must be free of noise and decoupled to GND.
6 ADR1 input Tri-level address selection input that sets bits A2 and A3 of the 7-bit slave address.
7 GND power_in Ground for all on-chip circuitry.
8 SDA bidirectional Serial data bidirectional connection clocked into or out of the internal 16-bit register with SCL; open-drain line that must be pulled to VA with an external pull-up resistor.

Key specifications

Parameter Value
Manufacturer Texas Instruments
Package VSSOP-8-0.65mm
Category ADC/DAC/Data Conversion
Pins 8

Electrical characteristics

Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).

Parameter Symbol Min Typ Max Unit Conditions Page
Supply Voltage VA -0.3 6.5 V 4
Voltage on any Digital Input Pin to GND -0.3 6.5 V 4
Input Current at Any Pin -15 15 mA 4
Package Input Current -20 20 mA 4
Junction Temperature TJ 150 °C 4
Storage Temperature -65 150 °C 4
Operating Temperature Range TA -40 105 °C 5
Supply Voltage VA 2.7 5.5 V 5
Digital Input Voltage 0 5.5 V 5
Sample Rate 188.9 ksps up to 5
Thermal Resistance Junction-to-Ambient, 8-Lead VSSOP θJA 200 °C/W 8-Lead VSSOP 5
Integral Non-Linearity INL -1 1 LSB VA = +2.7V to +3.6V, fSCL up to 400kHz 5
Differential Non-Linearity DNL -0.9 1 LSB VA = +2.7V to +3.6V, fSCL up to 400kHz 5
Offset Error VOFF -1.6 0.1 1.6 LSB VA = +2.7V to +3.6V, fSCL up to 400kHz 5
Gain Error GE -6 -0.8 6 LSB 5
Effective Number of Bits ENOB 11.3 11.7 Bits VA = +2.7V to +3.6V 6
Signal-to-Noise Ratio SNR 70.4 72.5 dB VA = +2.7V to +3.6V 6
Total Harmonic Distortion THD -92 -78 dB VA = +2.7V to +3.6V 6
Signal-to-Noise Plus Distortion Ratio SINAD 70 72.6 dB VA = +2.7V to +3.6V 6
Spurious-Free Dynamic Range SFDR 76 90 dB VA = +2.7V to +3.6V 6
DC Leakage Current IDCL -1 1 µA 6
Serial Input Current IIN -1 1 µA SCL, SDA 6
Address Input Low Voltage VIL 0.5 V ADDR 6
Address Input Current IIN -1 1 µA ADDR 6
Output Low Voltage VOL 0.4 V ISINK = 3 mA 6
Output Low Voltage VOL 0.6 V ISINK = 6 mA 6
High Impedance Output Leakage Current IOZ -1 1 µA 6
Supply Voltage Minimum VA 2.7 V 7
Supply Voltage Maximum VA 5.5 V 7
Supply Current, Continuous Operation IN 0.08 0.14 mA VA = 2.7V to 3.6V, fSCL=400kHz 7
Supply Current, Continuous Operation IN 0.16 0.3 mA VA = 4.5V to 5.5V, fSCL=400kHz 7
Supply Current, Continuous Operation IN 0.37 0.55 mA VA = 2.7V to 3.6V, fSCL=3.4MHz 7
Supply Current, Continuous Operation IN 0.74 0.99 mA VA = 4.5V to 5.5V, fSCL=3.4MHz 7
Supply Current, Automatic Conversion Mode IA 0.41 0.59 mA VA = 2.7V to 3.6V 7
Supply Current, Automatic Conversion Mode IA 0.78 1.2 mA VA = 4.5V to 5.5V 7
Supply Current, Power Down Mode PD1 IPD1 0.1 0.2 µA 2-wire interface stopped and quiet (SCL = SDA = VA) 7
Power Consumption, Power Down Mode PD1 PPD1 0.5 0.9 µW 2-wire interface stopped and quiet (SCL = SDA = VA) 7
Supply Current, Power Down Mode PD2 IPD2 13 45 µA VA = 2.7V to 3.6V, fSCL=400kHz 7
Supply Current, Power Down Mode PD2 IPD2 27 80 µA VA = 4.5V to 5.5V, fSCL=400kHz 7
Supply Current, Power Down Mode PD2 IPD2 89 150 µA VA = 2.7V to 3.6V, fSCL=3.4MHz 7
Supply Current, Power Down Mode PD2 IPD2 168 250 µA VA = 4.5V to 5.5V, fSCL=3.4MHz 7
Serial Clock Frequency fSCL 400 kHz Fast Mode 8
Serial Clock Frequency fSCL 3.4 MHz High Speed Mode, Cb = 100pF 8
Conversion Time 1 µs 8
Conversion Rate fCONV 188.9 ksps fSCL = 3.4MHz 8
Input Capacitance CINA 30 pF Track Mode 6
Input Capacitance CINA 3 pF Hold Mode 6

CAD (KiCad official)

  • Symbol: ADC121C021CIMM
  • Footprint: Package_SO:VSSOP-8_2.3x2mm_P0.5mm
  • 3D model: VSSOP-8-0.65mm (KiCad packages3D, STEP)
  • 3D model files: adc121c021cimm-etched.step / adc121c021cimm-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); adc121c021cimm.step / adc121c021cimm.glb are the bare package body.

Provenance

Data extracted from the manufacturer datasheet, not a distributor listing:

  • Datasheet: Texas Instruments datasheet (47 pp, sha256 f464ed23e391a581, retrieved 2026-10-22, tier: lcsc)
  • Extractor: parts-factory 2.0.0 / extract_pins 0.3, primary claude-sonnet-5-5 (text), consensus claude-sonnet-5-5 (agreed), guards: pin_guards 0.1: passed. Pins are checked against the footprint pad set and their cited datasheet pages before publish.
  • CAD: KiCad official libraries (CC-BY-SA 4.0).

Datasheet PDF