AD5110BCPZ10-RL7 - 128-Tap 10kΩ I2C Nonvolatile DigiPot | Analog Devices
N.º da peça: AD5110BCPZ10-RL7 ✓ Ativo| Qtd. | Preço unitário | Total |
|---|---|---|
| 1 | $2.4 | $2,40 |
| 10 | $2.16 | $21,60 |
| 100 | $1.85 | $185,00 |
| 500 | $1.62 | $810,00 |
| 1.000 | $1.38 | $1.380,00 |
AD5110BCPZ10-RL7 Visão geral
A digital potentiometer (digiPot) is a solid-state, electronically controllable resistor that emulates a mechanical potentiometer or rheostat by switching between discrete resistive elements under digital control. In the hierarchy of electronic components, digiPots belong to the data-conversion/signal-conditioning family, sitting alongside analog potentiometers, mechanical trimmers, and digital-to-analog converters (DACs); they are widely used for system-level calibration, user-interface trim, and gain/offset adjustment in circuits that must be reconfigured in firmware rather than by hand.
The AD5110's three principal terminals—A (high terminal), W (wiper), and B (low terminal)—support both potentiometer (three-terminal, voltage divider) and rheostat (two-terminal, variable resistor) configurations. Key benefits include a 35 ppm/°C rheostat-mode temperature coefficient for low-drift trimming, 2.5 µA maximum supply current at 2.7 V and 125 °C, and an I2C interface with readback of both the wiper register and EEPROM. Resistor tolerance is factory-stored in EEPROM, enabling an end-to-end tolerance accuracy of 0.1% after host-side calibration.
Typical applications include LCD bias adjustment, laser-diode driver trim, RF power-detector gain calibration, programmable-gain instrumentation amplifiers, and audio volume/bias control where mechanical pots are unsuitable due to vibration, contamination, or remote-control requirements. The nonvolatile memory eliminates the need for software re-initialization after each power-up, an important advantage in headless or factory-calibrated systems.
When designing with the AD5110, observe the ±6 mA wiper current limit to avoid permanent resistance-shift damage, and place a 0.1 µF decoupling capacitor close to the VDD pin. The wide 2.3 V–5.5 V supply range simplifies integration into both 3.3 V and 5 V microcontroller systems. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the standalone manufacturer datasheet.
Alternativas drop-in para AD5110BCPZ10-RL7 — mesmo encapsulamento, compatível pino a pino. Peças de encapsulamento diferente que exigem retrabalho na PCB são excluídas.
Ferramenta de comparação rápida — selecione peças alternativas para comparação lado a lado:
AD5110BCPZ10-1-RL7
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
AD5110BCPZ10-500R7
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
AD5112BCPZ10-RL7
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
AD5114BCPZ10-RL7
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
AD5111BCPZ10-RL7
✅ Drop-In📋 Alternativa de referência (fora do catálogo)
AD5110BCPZ10-RL7 Especificações
| Função | Nonvolatile digital potentiometer |
| Number of Circuits | 1 |
| Number of Taps | 128 |
| Nominal End-to-End Resistance (R-AB) | 10 kΩ |
| Resistor Tolerance Error | ±8% maximum |
| Wiper Current (A, B, W pins) | ±6 mA |
| Rheostat Mode Temperature Coefficient | 35 ppm/°C |
| Corrente de alimentação | 2.5 µA max @ 2.7 V, 125°C |
| Bandwidth (5 kΩ option) | 4 MHz |
| Interface | I2C-compatible |
| Supply Voltage Range (VDD) | 2.3 V to 5.5 V |
| Memory | Nonvolatile EEPROM wiper storage |
| End-to-End Tolerance After Calibration | 0.1% (resistor tolerance stored in EEPROM) |
| Encapsulamento | 8-LFCSP-UD (2 mm × 2 mm) |
| Faixa de temperatura de operação | -40°C to +125°C |
| Tipo de montagem | Surface Mount |
| Status RoHS | Compliant |
Configuração de pinos do AD5110BCPZ10-RL7
| Pino 1 | VDD — Positive supply input (2.3 V to 5.5 V) |
| Pino 2 | GND — Ground reference |
| Pino 3 | SCL — I2C serial clock input |
| Pino 4 | SDA — I2C serial data input/output |
| Pino 5 | WP — Write-protect input (active low) |
| Pino 6 | A — Resistor terminal A (high end) |
| Pino 7 | W — Wiper terminal |
| Pino 8 | B — Resistor terminal B (low end) |
Aplicações típicas
AD5110BCPZ10-RL7 é adequado para 6 aplicaçãos: LCD Display Bias Adjustment, Laser Diode Driver Trim, Programmable Gain Instrumentation Amplifier, Audio Volume and Tone Control, RF Power Detector Calibration, Industrial Process Calibration Trim.
LCD Display Bias Adjustment
The AD5110BCPZ10-RL7's 10 kΩ end-to-end resistance with 128 taps (~78.7 Ω per LSB) and ±8% calibrated tolerance makes it well-suited to trimming the VCOM and bias rails of TFT/OLED displays. In a typical circuit the digipot sits between a precision reference and the panel's bias pin, allowing the host MCU to optimize contrast at production test or compensate for panel aging in the field. Nonvolatile EEPROM storage means the calibrated bias survives power-cycles and brown-outs without firmware intervention, eliminating the drift complaints common with mechanical trim pots.
Recomendado
Laser Diode Driver Trim
Laser diode bias currents are notoriously sensitive to thermal and aging drift, and the AD5110BCPZ10-RL7 provides the low-noise, digitally-controlled resistance needed to set the gain of a transconductance stage driving the laser. With ±6 mA wiper current and 35 ppm/°C rheostat temperature coefficient, it holds bias set-point within tight bounds across the -40°C to +125°C range. The I2C interface lets a microcontroller perform closed-loop APC (automatic power control) by reading a monitor photodiode and adjusting the wiper, while nonvolatile memory preserves the calibration between power cycles in optical transceivers.
Recomendado
Programmable Gain Instrumentation Amplifier
Placing the AD5110BCPZ10-RL7 in the gain-set node of an in-amp lets the host microcontroller digitally program gain across a 1×–128× range with 7-bit resolution. The 4 MHz bandwidth (5 kΩ option specification) and low 2.5 µA supply current keep the digipot transparent in the signal path, while its small 2 mm × 2 mm LFCSP-UD footprint leaves room for the surrounding precision op-amps. The nonvolatile wiper memory is particularly valuable in factory-calibrated test instruments where the gain setting must survive power-down without a software re-init sequence.
Recomendado
Audio Volume and Tone Control
The AD5110BCPZ10-RL7 can serve as a digitally controlled audio taper element in volume, balance, and tone-control circuits of consumer and automotive head units. Its 128 logarithmic-feel taps, ±6 mA wiper rating, and 4 MHz bandwidth comfortably cover the audio band without introducing audible distortion. The I2C interface lets a microcontroller implement user-facing volume buttons, mute, and tone presets without mechanical pots, while nonvolatile EEPROM recalls the last setting on every power-up—an expected feature in modern infotainment systems.
Recomendado
RF Power Detector Calibration
RF power detectors and log-amps often need per-unit offset and slope calibration, and the AD5110BCPZ10-RL7 fits this role by trimming the reference leg of a differential detector chain. With 128 taps and a calibrated 0.1% end-to-end tolerance after EEPROM readback, the digipot eliminates the need for factory laser-trim of the detector IC itself. The I2C interface and 2.3 V–5.5 V supply range integrate cleanly into small-cell, Wi-Fi, and IoT radio modules where PCB real estate is at a premium.
Recomendado
Industrial Process Calibration Trim
In 4–20 mA industrial transmitters, PLC analog outputs, and isolated sensor front-ends, the AD5110BCPZ10-RL7 provides the in-circuit digital trim needed to compensate for component tolerances and temperature drift. The wide -40°C to +125°C operating range, ±8% resistor tolerance (calibrated to 0.1% via EEPROM), and 35 ppm/°C rheostat-mode TC make it suitable for harsh industrial environments. Its surface-mount 8-LFCSP-UD package enables compact module designs while the I2C bus allows remote re-calibration over opto-isolated links without field service calls.
Recomendado
Resumo dos produtos recomendados
Dados de referência de engenharia para AD5110BCPZ10-RL7 — comparação, orientação de projeto e informações de conformidade.
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Comparação com alternativas
| Parâmetro | Este produto | AD5110BCPZ10-1-RL7 | AD5110BCPZ10-500R7 | AD5112BCPZ10-RL7 | AD5114BCPZ10-RL7 | AD5111BCPZ10-RL7 |
|---|---|---|---|---|---|---|
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Package | 8-LFCSP-UD (2x2 mm) | 8-LFCSP-UD (2x2 mm) | 8-LFCSP-UD (2x2 mm) | 8-LFCSP-UD (2x2 mm) | 8-LFCSP-UD (2x2 mm) | 8-LFCSP-UD (2x2 mm) |
| End-to-End Resistance | 10 kΩ | 10 kΩ | 500 Ω | 10 kΩ | 10 kΩ | 10 kΩ |
| Number of Taps | 128 | 128 | 128 | 64 | 32 | 128 |
| Interface | I2C | I2C (different factory address) | I2C | I2C | I2C | Up/Down manual-increment |
| Wiper Current | ±6 mA | ±6 mA | ±6 mA | ±6 mA | ±6 mA | ±6 mA |
| Memory Type | Nonvolatile EEPROM | Nonvolatile EEPROM | Nonvolatile EEPROM | Nonvolatile EEPROM | Nonvolatile EEPROM | Nonvolatile EEPROM |
| Operating Temperature Range | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C | -40°C to +125°C |
Principais diferenciais
- Nonvolatile EEPROM wiper storage with 0.1% calibrated tolerance (vs MCP4651T-103E/ST)
- Same-family alternatives share identical 8-LFCSP-UD footprint (vs AD5112BCPZ10-RL7 / AD5114BCPZ10-RL7)
- Higher tap count than AD5112/AD5114 within the same family (vs AD5112BCPZ10-RL7 (64 taps) / AD5114BCPZ10-RL7 (32 taps))
Notas de projeto
Place a 0.1 µF X7R decoupling capacitor as close as possible to the VDD pin (pin 1), with a trace length below 2 mm to GND. The AD5110BCPZ10-RL7's 2.5 µA quiescent current is sensitive to supply noise on VDD; noisy rails can modulate the wiper resistance via the analog switches. For multi-rail designs, derive VDD from a low-noise LDO post-regulator rather than directly from a switching node.
Never exceed the ±6 mA wiper current rating on the A, B, and W pins; sustained overcurrent causes permanent resistance-shift failure modes in CMOS digipots. If your application requires higher currents, place the AD5110BCPZ10-RL7 in the low-current sense node of a digitally-controlled current-mirror or in the feedback divider of a power stage rather than directly in series with the load.
The AD5110BCPZ10-RL7's wiper switches through 128 CMOS FETs; the small charge-injection transient during each wiper transition can inject a brief voltage step on the W terminal. In sensitive analog signal paths, add a small RC filter (1 kΩ + 1 nF) at the W pin, and avoid using the digipot directly at the input of a high-gain, high-bandwidth op-amp stage. The 4 MHz bandwidth rating applies to the 5 kΩ option; the 10 kΩ part exhibits lower bandwidth in proportion.
Informações de conformidade
RoHS and lead-free per Analog Devices product page. The AD5110 family is not AEC-Q100 qualified; an automotive-grade variant is not available in this part number - refer to the AD5110BCPZ10-1-RL7 automotive temperature grade version if needed.
