component
ZJC2105-16ATPER
Public Made by Adomby adom
ZJW Analog To Digital Converters (ADCs), QFN-20(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
Open in new tab ↗
Loads when you scroll to it. Unloads after 5 minutes in the background.
Symbol & Footprint
Schematic Symbol
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
PCB Footprint
Open full view ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
Datasheet
Open in new tab ↗Loads when you scroll to it. Unloads after 5 minutes in the background.
README
markdownZJC2105-16ATPER
ZJW · Analog To Digital Converters (ADCs) · QFN-20(4x4)
ZJC2105-16ATPER from ZJW, in a QFN-20(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 capacitors; minimum VDD is 3.0 V for the 2.5 V internal reference and 4.5 V for the 4.096 V internal reference. |
| 2 | REF | bidirectional | External reference input or internal reference buffer output, selectable 2.5 V or 4.096 V, requiring a 10 μF decoupling capacitor close to the pin. |
| 3 | REFIN | bidirectional | Internal reference output (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 | NC | unconnected | No connection on the ZJC2105-16; recommended to be connected to GND. |
| 7 | IN2 | input | Analog input channel 2 on the ZJC2105-16. |
| 8 | NC | unconnected | No connection on the ZJC2105-16; recommended to be connected to GND. |
| 9 | IN3 | input | Analog input channel 3 on the ZJC2105-16. |
| 10 | COM | input | Common channel input, which all input channels can be referenced to a common-mode point of 0 V or VREF / 2. |
| 11 | CNV | input | Convert input; a rising edge initiates the conversion, and the busy indicator is enabled while CNV is high during conversion. |
| 12 | DIN | input | Serial data input used for writing the 14-bit configuration register. |
| 13 | SCK | input | Serial clock input that clocks data out on SDO and in on DIN, MSB first. |
| 14 | SDO | output | Serial data output carrying conversion codes clocked by SCK; straight binary in unipolar modes and twos complement in bipolar modes. |
| 15 | VIO | power_in | Digital interface power supply, nominally set to the same supply as the host interface. |
| 16 | IN0 | input | Analog input channel 0. |
| 17 | NC | unconnected | No connection on the ZJC2105-16; recommended to be connected to GND. |
| 18 | IN1 | input | Analog input channel 1 on the ZJC2105-16. |
| 19 | NC | unconnected | No connection on the ZJC2105-16; recommended to be connected to GND. |
| 20 | VDD | power_in | Power supply, nominally 2.3 V to 5.5 V, same supply as pin 1. |
| 21 | EP | passive | Exposed pad (from the footprint; not named in the datasheet pin table). |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | ZJW |
| Package | QFN-20(4x4) |
| Category | ADC/DAC/Data Conversion |
| 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 |
|---|---|---|---|---|---|---|---|
| Integral Nonlinear Error | INL | -2 | 2 | LSB | Full temperature range (●) | 7 | |
| Differential Nonlinear Error | DNL | -0.9 | 0.9 | LSB | Full temperature range (●) | 7 | |
| Gain Error Single-ended | GE | -10 | 10 | LSB | Single-ended, full temperature range (●) | 7 | |
| Zero Error Single-ended | ZE | -8 | 8 | LSB | Single-ended, full temperature range (●) | 7 | |
| Gain Error Temperature Drift | -0.5 | 0.5 | ppm/°C | 7 | |||
| Zero Error Temperature Drift | -0.3 | 0.3 | ppm/°C | 7 | |||
| Power Supply Sensitivity | -0.5 | 0.5 | LSB | VDD = 5 V ± 5 % | 7 | ||
| Throughput Full Bandwidth | 0 | 250 | kSPS | VDD = 4.5 V to 5.5 V, full temperature range (●) | 7 | ||
| Throughput Full Bandwidth | 0 | 200 | kSPS | VDD = 2.3 V to 4.5 V, full temperature range (●) | 7 | ||
| Throughput 1/4 Bandwidth | 0 | 62.5 | kSPS | VDD = 4.5 V to 5.5 V, full temperature range (●) | 7 | ||
| Throughput 1/4 Bandwidth | 0 | 50 | kSPS | VDD = 2.3 V to 4.5 V, full temperature range (●) | 7 | ||
| Transient Response | 2.2 | µs | Full-scale step, full temperature range (●) | 7 | |||
| Dynamic Range | DR | 92 | 93 | dB | VREF = 5 V, full temperature range (●) | 8 | |
| SNR | SNR | 91 | 92.5 | dB | fIN = 1 kHz, VREF = 5 V, full temperature range (●) | 8 | |
| SNR | SNR | 89 | 91 | dB | fIN = 1 kHz, VREF = 4.096 V, internal ref, full temperature range (●) | 8 | |
| SNR | SNR | 85.3 | 87.3 | dB | fIN = 1 kHz, VREF = 2.5 V, internal ref, full temperature range (●) | 8 | |
| Signal-to (Noise + Distortion) | SINAD | 90.9 | 92.4 | dB | fIN = 1 kHz, VREF = 5 V, full temperature range (●) | 8 | |
| Signal-to (Noise + Distortion) | SINAD | 88.8 | 90.8 | dB | fIN = 1 kHz, VREF = 4.096 V, internal ref, full temperature range (●) | 8 | |
| Signal-to (Noise + Distortion) | SINAD | 85.2 | 87.2 | dB | fIN = 1 kHz, VREF = 2.5 V, internal ref, full temperature range (●) | 8 | |
| Spurious-Free Dynamic Range | SFDR | 106 | dB | fIN = 1 kHz, VREF = 5 V | 8 | ||
| Total Harmonic Distortion | THD | -105 | dB | fIN = 1 kHz, VREF = 5 V | 8 | ||
| Channel Crosstalk | -120 | dB | fIN = 1 kHz, VREF = 5 V | 8 | |||
| REF Output Voltage 4.096 V | REF | 4.092 | 4.096 | 4.1 | V | @ 25 °C, full temperature range (●) | 8 |
| REF Output Voltage 2.5 V | REF | 2.495 | 2.5 | 2.505 | V | @ 25 °C, full temperature range (●) | 8 |
| REF Output Current | 300 | µA | 8 | ||||
| Reference Temperature Drift | Tc | 6 | 10 | ppm/°C | -40 °C to +85 °C, full temperature range (●) | 8 | |
| Reference Temperature Drift | Tc | 2 | ppm/°C | 0 °C to +85 °C | 8 | ||
| Line Regulation | 20 | ppm/V | VDD = 5 V ± 5 % | 8 | |||
| Turn-On Settling Time | 10 | ms | CREFIN = 0.1 µF, CREF = 10 µF | 8 | |||
| -3 dB Analog Input Bandwidth Full Bandwidth | 6 | MHz | VDD = 5 V | 8 | |||
| -3 dB Analog Input Bandwidth 1/4 Bandwidth | 1.5 | MHz | VDD = 5 V | 8 | |||
| Aperture Delay | 3 | ns | VDD = 5 V | 8 | |||
| Temperature Sensor Output Voltage | 300 | mV | @ 25 °C | 8 | |||
| Temperature Sensitivity | 1 | mV/°C | 8 | ||||
| Logic Low Voltage | VOL | 0.4 | V | IOUT = +200 µA, full temperature range (●) | 9 | ||
| Input Current | IIL | -1 | 1 | µA | Full temperature range (●) | 9 | |
| VDD Specified Performance | VDD | 4.5 | 5.5 | V | Specified performance | 9 | |
| VDD Operating Range | VDD | 2.3 | 5.5 | V | Operating range | 9 | |
| VIO Specified Performance | VIO | 1.8 | V | Specified performance | 9 | ||
| Power-down Current | 50 | nA | VDD and VIO = 5 V, @25 °C | 9 | |||
| Power Consumption 250 kSPS | 8.5 | 9.5 | mW | VDD = 5 V, 250 kSPS, full temperature range (●) | 9 | ||
| Power Consumption 250 kSPS internal ref | 13 | 15 | mW | VDD = 5 V, 250 kSPS, internal ref, full temperature range (●) | 9 | ||
| Specified Performance Temperature Range | TMIN to TMAX | -40 | 85 | °C | 9 | ||
| Absolute Maximum VDD, REF, VIO to GND | -0.3 | 6 | V | Rated at 25 °C | 6 | ||
| Absolute Maximum Storage Temperature | -65 | 150 | °C | 6 | |||
| Absolute Maximum Junction Temperature | 150 | °C | 6 | ||||
| Absolute Maximum Lead Temperature (soldering, 10 s) | 300 | °C | Soldering, 10 seconds | 6 | |||
| Absolute Maximum Reflow Temperature | 260 | °C | IPC/JEDEC J-STD-020 compliant | 6 | |||
| ESD Human Body Model | HBM | 1.5 | kV | ANSI/ESDA/JEDEC JS-001 compliant | 6 | ||
| ESD Charged Device Model | CDM | 1 | kV | ANSI/ESDA/JEDEC JS-002 compliant | 6 | ||
| Thermal Resistance Junction-to-Ambient QFN-20 | θJA | 51 | °C/W | Soldered onto circuit board | 6 | ||
| Thermal Resistance Junction-to-Case QFN-20 | θJC | 27 | °C/W | 6 |
CAD (KiCad official)
- Symbol:
ZJC2105-16ATPER - Footprint:
Package_DFN_QFN:QFN-20-1EP_4x4mm_P0.5mm_EP2.5x2.5mm - 3D model: QFN-20(4x4) (KiCad packages3D, STEP)
- 3D model files:
zjc2105-16atper-etched.step/zjc2105-16atper-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);zjc2105-16atper.step/zjc2105-16atper.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: ZJW datasheet (36 pp, sha256
075123bbcdfabf35, retrieved 2026-10-26, tier: lcsc) - Extractor: parts-factory
2.0.0/extract_pins 0.3, primaryclaude-haiku-5-5(text), consensusclaude-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).