component
AD7689ACPZ
Public Made by Adomby adom
Analog Devices Analog To Digital Converters (ADCs), LFCSP-20(4x4). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
Generated by kicad-footprint-generator · KiCad file format 20260206
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AD7689ACPZ
Analog Devices · Analog To Digital Converters (ADCs) · LFCSP-20(4x4)
AD7689ACPZ from Analog Devices, in a LFCSP-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 2.5 V to 5.5 V when using an external reference and decoupled with 10 μF and 100 nF capacitors; minimum 3.0 V with the internal 2.5 V reference and 4.5 V with the internal 4.096 V reference. |
| 2 | REF | bidirectional | Reference input/output; with the internal reference enabled it produces a selectable 2.5 V or 4.096 V system reference and needs a 10 μF decoupling capacitor placed as close to REF as possible. |
| 3 | REFIN | bidirectional | Internal reference output/reference buffer input; the internal reference requires 0.1 μF decoupling, and when the buffer is used the source must be between 0.5 V and (VDD − 0.5 V). |
| 4 | GND | power_in | Power supply ground. |
| 5 | GND | power_in | Power supply ground. |
| 6 | IN4 | passive | Analog input channel 4 (AD7689). |
| 7 | IN5 | passive | Analog input channel 5 (AD7689). |
| 8 | IN6 | passive | Analog input channel 6 (AD7689). |
| 9 | IN7 | passive | Analog input channel 7 (AD7689). |
| 10 | COM | passive | Common channel input; all input channels IN[7:0] can be referenced to a common-mode point of 0 V or VREF/2 V. |
| 11 | CNV | input | Conversion input; a rising edge initiates the conversion, and if CNV is held low during conversion the busy indicator is enabled. |
| 12 | DIN | input | Data input used to write the 14-bit configuration register, which can be written during and after conversion. |
| 13 | SCK | input | Serial data clock input that clocks out data on SDO and clocks in data on DIN, MSB first. |
| 14 | SDO | output | Serial data output carrying the conversion result synchronized to SCK; straight binary in unipolar modes and twos complement in bipolar modes. |
| 15 | VIO | power_in | Input/output interface digital power, nominally at the host interface supply of 1.8 V, 2.5 V, 3 V, or 5 V. |
| 16 | IN0 | passive | Analog input channel 0. |
| 17 | IN1 | passive | Analog input channel 1 (AD7689). |
| 18 | IN2 | passive | Analog input channel 2 (AD7689). |
| 19 | IN3 | passive | Analog input channel 3 (AD7689). |
| 20 | VDD | power_in | Power supply, nominally 2.5 V to 5.5 V when using an external reference and decoupled with 10 μF and 100 nF capacitors; minimum 3.0 V with the internal 2.5 V reference and 4.5 V with the internal 4.096 V reference. |
| 21 | EPAD | unconnected | Exposed pad, not connected internally; for increased solder joint reliability it is recommended to solder it to the system ground plane. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices |
| Package | LFCSP-20(4x4) |
| Category | Data Converters |
| 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 Linearity Error | INL | -4 | 4 | LSB | 3 | ||
| Gain Error | -32 | 32 | LSB | 3 | |||
| Gain Error Match | -2 | 2 | LSB | 3 | |||
| Gain Error Temperature Drift | -1 | 1 | ppm/°C | 3 | |||
| Offset Error | -32 | 32 | LSB | VDD = 4.5 V to 5.5 V | 3 | ||
| Offset Error Match | -2 | 2 | LSB | 3 | |||
| Offset Error Temperature Drift | -1 | 1 | ppm/°C | 3 | |||
| Power Supply Sensitivity | -1.5 | 1.5 | LSB | VDD = 5 V ± 5% | 3 | ||
| Differential Linearity Error | DNL | -1 | 1.5 | LSB | 3 | ||
| Conversion Rate, Full Bandwidth | 0 | 250 | kSPS | VDD = 4.5 V to 5.5 V | 3 | ||
| Conversion Rate, Full Bandwidth | 0 | 200 | kSPS | VDD = 2.3 V to 4.5 V | 3 | ||
| Conversion Rate, 1/4 Bandwidth | 0 | 62.5 | kSPS | VDD = 4.5 V to 5.5 V | 3 | ||
| Conversion Rate, 1/4 Bandwidth | 0 | 50 | kSPS | VDD = 2.3 V to 4.5 V | 3 | ||
| Transient Response | 1.8 | µs | Full-scale step, full bandwidth | 3 | |||
| Transient Response | 14.5 | µs | Full-scale step, 1/4 bandwidth | 3 | |||
| Dynamic Range | 90.5 | 93.8 | dB | 3 | |||
| Signal-to-Noise Ratio (SNR) | SNR | 90 | 92.5 | 93.5 | dB | fIN = 20 kHz, VREF = 5 V | 3 |
| Signal-to-Noise Ratio (SNR) | SNR | 89 | 91 | 92.3 | dB | fIN = 20 kHz, VREF = 4.096 V, internal REF | 3 |
| Signal-to-Noise Ratio (SNR) | SNR | 86 | 87.5 | 88.8 | dB | fIN = 20 kHz, VREF = 2.5 V, internal REF | 3 |
| Analog Input CMRR | CMRR | 68 | dB | Input frequency (fIN) = 250 kHz | 3 | ||
| Leakage Current at 25°C | 1 | nA | Acquisition phase | 3 | |||
| Supply voltage VDD | VDD | 2.3 | 5.5 | V | All specifications, TA = −40°C to +85°C, unless otherwise noted | 3 | |
| VIO interface supply | VIO | 1.8 | V | VIO = 1.8 V to VDD | 3 | ||
| Operating temperature range | TA | -40 | 85 | °C | Operation specified from −40°C to +85°C | 1 | |
| Analog input voltage, INx and COM | -0.3 | V | Referenced to GND; upper limit VDD + 0.3 V or VDD | 10 | |||
| Analog input current, INx | -130 | 130 | mA | 10 | |||
| REF, REFIN voltage | -0.3 | V | Referenced to GND; upper limit VDD + 0.3 V | 10 | |||
| VDD, VIO to GND | -0.3 | 7 | V | 10 | |||
| VIO to VDD | -0.3 | V | Upper limit VDD + 0.3 V | 10 | |||
| DIN, CNV, SCK to GND | -0.3 | V | Upper limit VIO + 0.3 V | 10 | |||
| SDO to GND | -0.3 | V | Upper limit VIO + 0.3 V | 10 | |||
| Storage temperature range | -65 | 150 | °C | 10 | |||
| Junction temperature | 150 | °C | 10 | ||||
| Thermal impedance, junction-to-ambient | θJA | 48 | °C/W | LFCSP | 10 | ||
| Thermal impedance, junction-to-case | θJC | 4.4 | °C/W | LFCSP | 10 | ||
| Internal reference drift | -10 | 10 | ppm/°C | Internal reference, typical drift | 24 |
CAD (KiCad official)
- Symbol:
AD7689ACPZ - Footprint:
Package_DFN_QFN:QFN-20-1EP_4x4mm_P0.5mm_EP2.5x2.5mm - 3D model: LFCSP-20(4x4) (KiCad packages3D, STEP)
- 3D model files:
ad7689acpz-etched.step/ad7689acpz-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ad7689acpz.step/ad7689acpz.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Analog Devices datasheet (37 pp, sha256
028312fc80ae8a4b, retrieved 2026-11-02, tier: manufacturer) - 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).