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ZJC2102-16ATPER

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ZJW Analog To Digital Converters (ADC), QFN-20-EP(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.

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Contents

README

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ZJC2102-16ATPER

ZJW · Analog To Digital Converters (ADC) · QFN-20-EP(4x4)

ZJC2102-16ATPER from ZJW, in a QFN-20-EP(4x4). 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 VDD power_in Power supply, nominally 2.3 V to 5.5 V with an external reference, decoupled with 10 µF and 100 nF; minimum 3.0 V for the internal 2.5 V reference and 4.5 V for the internal 4.096 V reference.
2 REF bidirectional External reference input or internal reference buffer output (selectable 2.5 V or 4.096 V), or buffered REFIN voltage (4.096 V maximum) when the buffer is enabled; needs a 10 µF decoupling capacitor close to the pin.
3 REFIN bidirectional Internal reference output (unbuffered bandgap, needs 0.1 µF decoupling) or external reference buffer input accepting 0.5 V to 4.096 V.
4 GND power_in Power supply ground.
5 GND power_in Power supply ground.
6 IN4 input Analog input channel 4.
7 IN5 input Analog input channel 5.
8 IN6 input Analog input channel 6.
9 IN7 input Analog input channel 7.
10 COM input Common channel input; all input channels can be referenced to a common-mode point of 0 V or VREF/2.
11 CNV input Convert input; the rising edge initiates conversion, and if CNV is high during conversion the busy indicator is enabled.
12 DIN input Serial data input used for writing to the 14-bit configuration register.
13 SCK input Serial clock input used to clock out data on SDO and clock in data on DIN, MSB first.
14 SDO output Serial data output for conversion codes, straight binary in unipolar modes and twos complement in bipolar modes.
15 VIO power_in Digital interface power supply, nominally at the same supply as the host interface.
16 IN0 input Analog input channel 0.
17 IN1 input Analog input channel 1.
18 IN2 input Analog input channel 2.
19 IN3 input Analog input channel 3.
20 VDD power_in Power supply, nominally 2.3 V to 5.5 V with an external reference, decoupled with 10 µF and 100 nF; minimum 3.0 V for the internal 2.5 V reference and 4.5 V for the internal 4.096 V reference.
21 EPAD passive Exposed pad (from the footprint; not named in the datasheet pin table).

Key specifications

Parameter Value
Manufacturer ZJW
Package QFN-20-EP(4x4)
Category Data Acquisition
Pins 21

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/REF/VIO to GND VDD, REF, VIO -0.3 6 V to GND 6
Storage Temperature -65 150 °C 6
Junction Temperature 150 °C 6
Lead Temperature 300 °C Soldering, 10 seconds 6
Maximum Reflow Temperature 260 °C IPC/JEDEC J-STD-020 6
ESD HBM 1.5 kV 6
ESD CDM 1 kV 6
Thermal Resistance Junction-Ambient θJA 51 °C/W QFN-20 6
Thermal Resistance Junction-Case θJC 27 °C/W QFN-20 6
VDD Specified performance VDD 4.5 5.5 V Specified performance 9
VDD Operating Range VDD 2.3 5.5 V 9
Specified Temperature Range TMIN to TMAX -40 85 °C Specified Performance 9
Resolution 16 bits 7
Throughput Full Bandwidth 0 500 kSPS VDD = 4.5 V to 5.5 V 7
Throughput Full Bandwidth 0 250 kSPS VDD = 2.3 V to 4.5 V 7
Throughput 1/4 Bandwidth 0 125 kSPS VDD = 4.5 V to 5.5 V 7
Throughput 1/4 Bandwidth 0 62.5 kSPS VDD = 2.3 V to 4.5 V 7
No Missing Codes 16 bits 7
Integral Nonlinear Error INL -2 1.25 2 LSB 7
Differential Nonlinear Error DNL -0.9 0.45 0.9 LSB 7
Gain Error GE -10 2 10 LSB Single-ended 7
Zero Error ZE -8 2 8 LSB Single-ended 7
Dynamic Range DR 92 93 dB VREF = 5 V 8
SNR SNR 91 92.5 dB fIN = 1 kHz, VREF = 5 V 8
SNR SNR 89 91 dB fIN = 1 kHz, VREF = 4.096 V, internal ref 8
SNR SNR 85.3 87.3 dB fIN = 1 kHz, VREF = 2.5 V, internal ref 8
SINAD SINAD 90.9 92.4 dB fIN = 1 kHz, VREF = 5 V 8
SINAD SINAD 88.8 90.8 dB fIN = 1 kHz, VREF = 4.096 V, internal ref 8
SINAD SINAD 85.2 87.2 dB fIN = 1 kHz, VREF = 2.5 V, internal ref 8
REF Output Voltage 4.096 V 4.092 4.096 4.1 V 4.096 V, @ 25 °C 8
REF Output Voltage 2.5 V 2.495 2.5 2.505 V 2.5 V, @ 25 °C 8
Internal Reference Temperature Drift Tc 6 10 ppm/°C -40 °C to +85 °C 8
Digital Input Current Low IIL -1 1 µA 9
Digital Input Current High IIH -1 1 µA 9
Logic Low Voltage VOL 0.4 V IOUT = +200 µA 9
VIO Specified performance VIO 1.8 V Specified performance, max VDD + 0.3 9
Power-down Current 50 nA VDD and VIO = 5 V, @ 25 °C 9
Power Consumption 34 38 µW VDD = 5 V, 1 kSPS 9
Power Consumption 3.4 3.8 mW VDD = 5 V, 100 kSPS 9
Power Consumption 17 19 mW VDD = 5 V, 500 kSPS 9
Power Consumption 22 25 mW VDD = 5 V, 500 kSPS, internal ref 9
Conversion Time tCONV 1.65 µs CNV Rising Edge to Data Available 10
Acquisition Time tACQ 0.35 µs 10
Time Between Conversions tCYC 2 µs 10
CNV Pulse Width tCNVH 10 ns 10
SCK Period tSCK 15 ns VIO > 3.3 V 10
SCK Period tSCK 20 ns VIO above 2.7 V 10
SCK Period tSCK 25 ns VIO above 2.3 V 10
SCK Period tSCK 40 ns VIO above 1.8 V 10
SCK Falling Edge to Data Valid Delay tDSDO 17 ns VIO above 2.7 V 10
SCK Falling Edge to Data Valid Delay tDSDO 18 ns VIO above 2.3 V 10
SCK Falling Edge to Data Valid Delay tDSDO 21 ns VIO above 1.8 V 10
DIN Valid Setup Time tSDIN 5 ns from SCK Rising Edge 10
DIN Valid Hold Time tHDIN 5 ns from SCK Rising Edge 10

CAD (KiCad official)

  • Symbol: ZJC2102-16ATPER
  • Footprint: Package_DFN_QFN:QFN-20-1EP_4x4mm_P0.5mm_EP2.5x2.5mm
  • 3D model: QFN-20-EP(4x4) (KiCad packages3D, STEP)
  • 3D model files: zjc2102-16atper-etched.step / zjc2102-16atper-etched.glb carry the MPN laser-etched on the die in a toggleable Adom.LaserEtch group (Fusion-ready); zjc2102-16atper.step / zjc2102-16atper.glb are the bare package body.

Provenance

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

  • Datasheet: ZJW datasheet (35 pp, sha256 046c454e0a782589, retrieved 2026-10-26, 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