component
AD8233ACBZ-R7
Public Made by Adomby adom
Analog Devices Analog To Digital Converters (ADC), WLCSP-20(1.7x2). Pinout cross-checked by two models against the datasheet, KiCad symbol/footprint/3D.
3D Model
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Symbol & Footprint
Schematic Symbol
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PCB Footprint
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Datasheet
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README
markdownAD8233ACBZ-R7
Analog Devices · Analog To Digital Converters (ADC) · WLCSP-20(1.7x2)
AD8233ACBZ-R7 from Analog Devices, in a WLCSP-20(1.7x2). 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 |
|---|---|---|---|
| A1 | GND | power_in | Power supply ground terminal. |
| A2 | +VS | power_in | Power supply terminal; the device is single-supply from 1.7 V to 3.5 V, with an absolute maximum supply of 3.6 V. |
| A3 | REFIN | input | Reference buffer input, a high impedance terminal used to set the level of the reference buffer. |
| A4 | HPSENSE | input | High-pass sense input for the instrumentation amplifier, connected to the junction of the R and C that sets the dc blocking corner frequency. |
| A5 | HPDRIVE | output | High-pass driver output connected to the capacitor of the first high-pass filter, driven to keep HPSENSE at the reference voltage. |
| B1 | SDN | input | Shutdown control input; drive low to enter the low power shutdown mode. |
| B2 | AC/DC | input | Leads off mode control input; drive low for dc leads off mode and high for ac leads off mode. |
| B3 | FR | input | Fast restore control input; drive high to enable fast recovery mode, otherwise drive low. |
| B4 | IAOUT | output | Instrumentation amplifier output terminal. |
| B5 | +IN | input | Instrumentation amplifier positive input, typically connected to the left arm (LA) electrode. |
| C1 | LOD | output | Leads off detection (LOD) comparator output. |
| C2 | RLD SDN | input | Right leg drive shutdown control input; drive low to power down the RLD amplifier. |
| C3 | REFOUT | output | Reference buffer output that serves as the virtual ground; the instrumentation amplifier output is referenced to this potential. |
| C4 | RLDFB | input | Right leg drive feedback input, the feedback terminal for the right leg drive circuit. |
| C5 | -IN | input | Instrumentation amplifier negative input, typically connected to the right arm (RA) electrode. |
| D1 | OUT | output | Operational amplifier output carrying the fully conditioned heart rate signal; it can be connected to an ADC input. |
| D2 | OPAMP- | input | Operational amplifier inverting input. |
| D3 | OPAMP+ | input | Operational amplifier noninverting input. |
| D4 | SW | passive | Fast restore switch terminal; connect to the output of the second high-pass filter. |
| D5 | RLD | output | Right leg drive output; connect the driven electrode (typically the right leg) to this pin. |
Key specifications
| Parameter | Value |
|---|---|
| Manufacturer | Analog Devices |
| Package | WLCSP-20(1.7x2) |
| Category | Data Acquisition |
| Pins | 20 |
Electrical characteristics
Limits as printed in the datasheet (page.json metadata.characteristics carries them as data).
| Parameter | Symbol | Min | Typ | Max | Unit | Conditions | Page |
|---|---|---|---|---|---|---|---|
| Common-Mode Rejection Ratio, DC to 60 Hz | CMRR | 80 | 86 | dB | VCM = 0.35 V to +VS − 150 mV, VDIFF = 0 V | 3 | |
| Power Supply Rejection Ratio | PSRR | 76 | 90 | dB | +VS = 1.8 V to 3.5 V | 3 | |
| Offset Voltage (RTI), Instrumentation Amplifier Inputs | VOS | 1 | 6 | mV | Instrumentation Amplifier Inputs | 3 | |
| Input Bias Current | IB | 50 | 200 | pA | 3 | ||
| Input Offset Current | IOS | 25 | 100 | pA | 3 | ||
| DC Differential Input Range | -300 | 300 | mV | 3 | |||
| Output Swing | 0.1 | V | RL = 50 kΩ | 3 | |||
| Gain Error | 1 | 4 | % | VDIFF = −300 mV to +300 mV | 3 | ||
| Input Voltage Range | 0.2 | V | TA = 0°C to 70°C | 3 | |||
| Operational Amplifier Offset Voltage | VOS | 1 | 5 | mV | 3 | ||
| Operational Amplifier Input Voltage Range | 0.1 | V | 3 | ||||
| Operational Amplifier Output Voltage Range | 0.1 | V | RL = 50 kΩ | 3 | |||
| Right Leg Drive Amplifier Quiescent Supply Current | 7.5 | 10 | μA | 4 | |||
| Right Leg Drive Amplifier Output Swing | 0.1 | V | RL = 50 kΩ | 4 | |||
| Integrator Input Resistor | 120 | 150 | 180 | kΩ | 4 | ||
| Reference Buffer Voltage Range | 0.1 | V | RL = 50 kΩ | 4 | |||
| AC Leads Off Square Wave Frequency | fAC | 50 | 100 | 175 | kHz | 4 | |
| Impedance Threshold Between +IN and −IN | 10 | 20 | MΩ | SDN = high | 4 | ||
| Fast Restore Switch On Resistance | RON | 8 | 10 | 12 | kΩ | 4 | |
| Quiescent Supply Current | 50 | 70 | μA | 5 | |||
| Wakeup Current | 0.65 | 1.5 | μA | SDN = low, LOD = low | 5 | ||
| Shutdown Current | 0.5 | 1 | μA | SDN = low, LOD = high | 5 | ||
| Supply Range | 1.7 | 3.5 | V | 5 | |||
| Specified Temperature Range | 0 | 70 | °C | 5 | |||
| Operational Temperature Range | -40 | 85 | °C | 5 | |||
| Supply Voltage | 3.6 | V | 6 | ||||
| Minimum Voltage, Any Terminal | -0.3 | V | 6 | ||||
| Storage Temperature Range | -65 | 125 | °C | 6 | |||
| Operating Temperature Range | -40 | 85 | °C | 6 | |||
| Maximum Junction Temperature | 140 | °C | 6 | ||||
| Thermal Resistance, Junction-to-Ambient | θJA | 108.5 | °C/W | PCB 1S0P, 0.25 W, 0 ms | 6 | ||
| Thermal Resistance, Junction-to-Ambient | θJA | 89 | °C/W | PCB 1S0P, 0.25 W, 1 ms | 6 | ||
| Thermal Resistance, Junction-to-Ambient | θJA | 82.3 | °C/W | PCB 1S0P, 0.25 W, 2 ms | 6 | ||
| Thermal Resistance, Junction-to-Ambient | θJA | 101.1 | °C/W | PCB 1S0P, 1.25 W, 0 ms | 6 | ||
| Thermal Resistance, Junction-to-Ambient | θJA | 87.3 | °C/W | PCB 1S0P, 1.25 W, 1 ms | 6 | ||
| Thermal Resistance, Junction-to-Ambient | θJA | 47.9 | °C/W | PCB 2S2P, 0.25 W, 0 ms | 6 | ||
| Thermal Resistance, Junction-to-Ambient | θJA | 43.4 | °C/W | PCB 2S2P, 0.25 W, 1 ms | 6 | ||
| Thermal Resistance, Junction-to-Ambient | θJA | 42.1 | °C/W | PCB 2S2P, 0.25 W, 2 ms | 6 | ||
| Thermal Resistance, Junction-to-Ambient | θJA | 46.8 | °C/W | PCB 2S2P, 1.25 W, 0 ms | 6 | ||
| Thermal Resistance, Junction-to-Ambient | θJA | 43.3 | °C/W | PCB 2S2P, 1.25 W, 1 ms | 6 | ||
| Thermal Resistance, Junction-to-Case | θJC | 0.6 | °C/W | PCB 1S0P | 6 | ||
| Thermal Resistance, Junction-to-Case | θJC | 0.7 | °C/W | PCB 2S2P | 6 |
CAD (KiCad official)
- Symbol:
AD8233ACBZ-R7 - Footprint:
Package_CSP:WLCSP-20_1.994x1.609mm_Layout5x4_P0.4mm - 3D model: WLCSP-20(1.7x2), generated from the KiCad footprint (body from the F.Fab outline, terminals on the pads, 0.35 mm nominal DSBGA height). Neither the vendor nor KiCad ships a 3D model for this package, so the dimensions are nominal, not the manufacturer's CAD (STEP)
- 3D model files:
ad8233acbz-r7-etched.step/ad8233acbz-r7-etched.glbcarry the MPN laser-etched on the die in a toggleableAdom.LaserEtchgroup (Fusion-ready);ad8233acbz-r7.step/ad8233acbz-r7.glbare the bare package body.
Provenance
Data extracted from the manufacturer datasheet, not a distributor listing:
- Datasheet: Analog Devices datasheet (29 pp, sha256
de233c71aebba2ca, retrieved 2026-10-17, 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).