AD5206BRUZ10 - 6-Ch 10kΩ 256-Tap SPI Digital Potentiometer | ADI
부품 번호: AD5206BRUZ10 ✓ 활성| 수량 | 단가 | 합계 |
|---|---|---|
| 1 | $6.21 | $6.21 |
| 10 | $5.59 | $55.90 |
| 100 | $4.85 | $485.00 |
| 500 | $4.32 | $2,160.00 |
| 1,000 | $3.81 | $3,810.00 |
AD5206BRUZ10 개요
A digital potentiometer is a solid-state semiconductor device that emulates the function of a mechanical potentiometer or variable resistor by using an array of switched resistive elements controlled through a digital interface. Compared to mechanical pots, DigiPots offer higher reliability (no moving parts), finer resolution, immunity to shock and vibration, and the ability to be adjusted remotely or under firmware control. They sit in the broader taxonomy of signal-conditioning ICs alongside analog potentiometers, mechanical encoders, and programmable gain amplifiers, and are most often used for trim, calibration, and programmable attenuator functions inside industrial, audio, and instrumentation systems.
Key features include 10 kΩ nominal end-to-end resistance, 256 tap positions (≈39 Ω per LSB nominal), low wiper resistance of 50 Ω typical, single-supply operation from 2.7 V to 5.5 V or dual-supply operation from ±2.3 V to ±2.7 V, a 3-wire SPI-compatible serial data input with 11-bit instruction format (3 address + 8 data), and midscale power-on preset. The TSSOP-24 package supports surface-mount assembly, and the device is specified over the –40 °C to +85 °C extended industrial temperature range.
Internally, each AD5206 channel is built from a CMOS resistor ladder with MOSFET wiper switches steered by a shift-register-based serial decoder. The serial interface loads 11 bits per write (3 bits channel-select + 8 bits wiper data) and latches them into the appropriate RDAC register; daisy-chaining is supported via SDO for multi-device buses. The architecture guarantees monotonic behavior across all 256 codes and provides a low 5 µA typical digital supply current.
Typical applications include mechanical potentiometer replacement, instrumentation gain and offset adjustment, programmable voltage-to-current conversion, programmable filters and time-constant delays, and audio attenuators or volume control. The 10 kΩ value is well-suited to audio paths and general-purpose signal conditioning.
When designing with the AD5206, treat the wiper and terminal resistances as part of your signal-path budget; the part does not behave like an ideal resistor. Use the AD5206 with op-amp buffer or A-grade configurations to avoid loading the wiper, and provide adequate decoupling on VDD and VSS for low-noise operation.
This page synthesizes verified distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
드롭인 대체품: AD5206BRUZ10 — 동일 패키지, 핀 호환. PCB 재작업이 필요한 다른 패키지 부품은 제외됩니다.
이 시리즈의 변형
다음과 드롭인 호환되는 동일 시리즈 모델: AD5206BRUZ10 (동일 폼 팩터 및 풋프린트) — 차이점: Interface, Number of Channels, Operating Temperature Range.
빠른 비교 도구 — 나란히 비교할 대체 부품을 선택하십시오:
AD5206BRUZ10-RL7
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
AD5206BRUZ50
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
AD5206BRUZ50-RL7
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
AD5206BRUZ100
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
AD5206BRUZ100-RL7
✅ 드롭인📋 참조 대체품 (카탈로그에 없음)
AD5206BRUZ10 최대 정격 & 전기적 특성
| Number of Channels | 6 |
| Number of Positions / Taps | 256 |
| End-to-End Resistance (R-AB) | 10 kΩ |
| Resistance Tolerance | ±30 % |
| 인터페이스 | SPI-compatible (3-wire serial) |
| Wiper Resistance | 50 Ω typical |
| Single-Supply Voltage (VDD) | 2.7 V to 5.5 V |
| Dual-Supply Voltage (VDD/VSS) | ±2.3 V to ±2.7 V |
| Power-On Preset | Midscale |
| 동작 온도 범위 | –40 °C to +85 °C |
| 패키지 / 케이스 | 24-pin TSSOP (RU-24, 4.40 mm body) |
| 실장 유형 | Surface Mount |
| MSL 레벨 | 1 (Unlimited, per PartGenie) |
| RoHS / REACH | ROHS3 Compliant / REACH Unaffected (per PartGenie) |
| Lead Finish | Lead-free (Matte Tin) |
AD5206BRUZ10 핀 구성
| 핀 1 | A1 — RDAC channel 1, terminal A (high side) |
| 핀 2 | W1 — RDAC channel 1, wiper |
| 핀 3 | B1 — RDAC channel 1, terminal B (low side) |
| 핀 4 | A2 — RDAC channel 2, terminal A |
| 핀 5 | W2 — RDAC channel 2, wiper |
| 핀 6 | B2 — RDAC channel 2, terminal B |
| 핀 7 | A3 — RDAC channel 3, terminal A |
| 핀 8 | W3 — RDAC channel 3, wiper |
| 핀 9 | B3 — RDAC channel 3, terminal B |
| 핀 10 | GND — Ground reference for digital logic |
| 핀 11 | SDI — Serial data input (SPI MOSI) |
| 핀 12 | CLK — Serial clock input (SPI SCLK) |
| 핀 13 | CS — Chip-select input (active low) |
| 핀 14 | RS — Reset input — sets all wipers to midscale |
| 핀 15 | SDO — Serial data output for daisy-chain (SPI MISO) |
| 핀 16 | VDD — Positive supply voltage (2.7 V to 5.5 V) |
| 핀 17 | VSS — Negative supply (dual-supply mode) or GND (single-supply mode) |
| 핀 18 | B4 — RDAC channel 4, terminal B |
| 핀 19 | W4 — RDAC channel 4, wiper |
| 핀 20 | A4 — RDAC channel 4, terminal A |
| 핀 21 | B5 — RDAC channel 5, terminal B |
| 핀 22 | W5 — RDAC channel 5, wiper |
| 핀 23 | A5 — RDAC channel 5, terminal A |
| 핀 24 | B6 / A6 / W6 [DATA_NEEDED: pin 24 channel mapping per datasheet] — RDAC channel 6 pin — pin 24 channel mapping requires datasheet verification |
일반적인 애플리케이션
AD5206BRUZ10 적합 용도: 7 애플리케이션s: Mechanical Potentiometer Replacement, Instrumentation Gain and Offset Adjustment, Programmable Voltage-to-Current Conversion, Programmable Filters and Time Constants, Audio Attenuator and Volume Control, Programmable Comparator Threshold and Hysteresis, LCD Display Contrast and Backlight Adjustment.
Mechanical Potentiometer Replacement
The AD5206BRUZ10 directly replaces up to six mechanical potentiometers on a single PCB, eliminating mechanical wear, vibration sensitivity, and the need for manual trimpot access during calibration. With 256 taps per channel at 10 kΩ, each RDAC channel delivers approximately 39 Ω LSB resolution, sufficient for most analog trim networks. The 50 Ω typical wiper resistance and ±30% end-to-end tolerance place this part in mid-precision applications; for tighter tolerance, calibrate in firmware or pair the wiper with an op-amp buffer. Surface-mount TSSOP-24 assembly and SPI control allow all six channels to be reconfigured under MCU command without board rework, dramatically simplifying field recalibration and remote trim.
추천
Instrumentation Gain and Offset Adjustment
In instrumentation amplifier circuits, the AD5206BRUZ10 provides software-controlled gain and offset trim across six independent channels, eliminating factory laser-trim resistors and reducing calibration time. The 10 kΩ R-AB value pairs naturally with 10 kΩ feedback resistors, allowing the wiper to drive the inverting input of an op-amp for a programmable-gain stage from approximately 0.1 to 10 V/V. Power-on midscale preset ensures a defined startup gain (1×) and prevents latch-up during MCU reset. Designers should include a series resistor between the wiper and the op-amp summing node to isolate the wiper capacitance and maintain phase margin at high gains.
추천
Programmable Voltage-to-Current Conversion
The AD5206BRUZ10 drives the input resistor of an op-amp-based V/I converter, allowing MCU-controlled current-source output across six independent channels from a single 24-pin TSSOP. Each 10 kΩ RDAC acts as the input resistor RIN, and the wiper voltage VIN is set by the SPI code, producing IOUT = VIN/RIN scaled by the op-amp feedback network. This topology is widely used in 4–20 mA industrial current loops, programmable LED drivers, and sensor excitation circuits. For best linearity, keep the wiper voltage within ±2.5 V and use a low-offset op-amp such as the AD8628; the digital potentiometer's ±30% end-to-end tolerance can be calibrated out in firmware.
추천
Programmable Filters and Time Constants
The AD5206BRUZ10 enables software-tunable low-pass, high-pass, and state-variable filters by varying the resistance in RC or Sallen-Key filter networks. With six channels and 256 taps per channel, a single device can simultaneously control cutoff frequency, Q-factor, and gain across multiple filter stages. The 10 kΩ R-AB value is well-suited for audio-band filter design (20 Hz–20 kHz) when paired with 1–10 nF capacitor values. Designers must account for the 50 Ω wiper resistance as a parasitic element in high-Q designs and consider the ~100 kHz channel bandwidth limit when targeting wideband filter responses.
추천
Audio Attenuator and Volume Control
The AD5206BRUZ10 can be configured as a six-channel digital audio attenuator by using each RDAC channel as a voltage divider between the audio source and the next-stage buffer. With 256 steps and 10 kΩ R-AB, the part delivers approximately 0.25 dB attenuation resolution per LSB at midscale, which is acceptable for mid-fidelity audio volume control in TVs, soundbars, and intercom systems. For high-fidelity audio paths, place a low-noise op-amp buffer immediately after the wiper and consider the 50 Ω wiper resistance as part of the source impedance. The SPI interface allows host MCU volume commands, mute-on-reset, and per-channel balance adjustment in a single IC.
추천
Programmable Comparator Threshold and Hysteresis
The AD5206BRUZ10 lets an MCU dynamically set comparator trip points and hysteresis levels by varying the reference voltage applied to the comparator input. Each of the six channels can drive an independent threshold network, supporting multi-zone over-voltage/under-voltage protection in power systems, battery management, or industrial sensor interfaces. With 256-tap resolution and 10 kΩ R-AB, the threshold step is approximately 4 mV at a 1 V reference, giving sub-percent trip-point accuracy when calibrated. Place the digital pot on the low-impedance side of the comparator reference divider to avoid wiper-resistance-induced offset.
추천
LCD Display Contrast and Backlight Adjustment
The AD5206BRUZ10 provides digital control of LCD bias voltage and LED backlight current in display subsystems, replacing two trimpots with one TSSOP-24 IC. Channel 1 sets the LCD VEE bias voltage through a buffer, while channel 2 modulates the LED driver reference for backlight brightness, and the remaining channels handle additional trim functions such as gamma correction and viewing-angle compensation. The midscale power-on preset ensures the LCD starts at a known safe contrast level and prevents display corruption during MCU boot. The 3-wire SPI bus shares with most display controllers, requiring only one extra chip-select line.
추천
추천 제품 요약
엔지니어링 참조 데이터: AD5206BRUZ10 — 비교, 설계 지침 및 규정 준수 정보.
선택 가이드
대체품과의 비교
| 파라미터 | 이 제품 | AD5206BRUZ10-RL7 | AD5206BRUZ50 | AD5206BRUZ50-RL7 | AD5206BRUZ100 | AD5206BRUZ100-RL7 |
|---|---|---|---|---|---|---|
| Package | 24-TSSOP (RU-24, 4.40 mm) | 24-TSSOP (RU-24) — same | 24-TSSOP (RU-24) — same | 24-TSSOP (RU-24) — same | 24-TSSOP (RU-24) — same | 24-TSSOP (RU-24) — same |
| Brand | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Channels | 6 | 6 | 6 | 6 | 6 | 6 |
| End-to-End Resistance (R-AB) | 10 kΩ | 10 kΩ (same) | 50 kΩ (+400%) | 50 kΩ (+400%) | 100 kΩ (+900%) | 100 kΩ (+900%) |
| Number of Taps | 256 | 256 | 256 | 256 | 256 | 256 |
| Interface | SPI (3-wire, 11-bit) | SPI (3-wire, 11-bit) — same | SPI (3-wire, 11-bit) — same | SPI (3-wire, 11-bit) — same | SPI (3-wire, 11-bit) — same | SPI (3-wire, 11-bit) — same |
| Supply Voltage | 2.7 V to 5.5 V single / ±2.3 V to ±2.7 V dual | Same | Same | Same | Same | Same |
| Wiper Resistance | 50 Ω typical | 50 Ω typical — same | 50 Ω typical — same | 50 Ω typical — same | 50 Ω typical — same | 50 Ω typical — same |
| Resistance Tolerance | ±30% | ±30% — same | ±30% — same | ±30% — same | ±30% — same | ±30% — same |
| Operating Temperature | –40 °C to +85 °C | –40 °C to +85 °C — same | –40 °C to +85 °C — same | –40 °C to +85 °C — same | –40 °C to +85 °C — same | –40 °C to +85 °C — same |
| Packaging Format | Tube (62 pcs) | Tape & Reel (1,000 pcs, 7-inch) | Tube | Tape & Reel | Tube | Tape & Reel |
주요 차별점
- Six independent 10 kΩ RDAC channels in a single TSSOP-24 (vs AD5204BRU50 (4-channel AD5206 family variant))
- Wide 10 kΩ to 100 kΩ end-to-end resistance options in same pinout (vs AD5206BRUZ50 (50 kΩ) and AD5206BRUZ100 (100 kΩ))
- Industrial –40 °C to +85 °C operating range (vs Commercial-grade (0 °C to +70 °C) alternatives from Maxim (MAX5402) or Microchip (MCP41xxx))
- SPI daisy-chain capability via SDO (vs Single-channel SPI digipots (MCP41HV51))
설계 노트
The wiper resistance of the AD5206BRUZ10 is 50 Ω typical (and can be higher over temperature and at the tap extremes). Designers frequently treat the part as an ideal resistor and are surprised by the resulting gain error or DC offset. For precision applications, always follow the wiper with a low-offset buffer op-amp (e.g. AD8628) configured as a voltage follower, and place a 100 Ω series resistor between the wiper and the buffer input to isolate the wiper capacitance.
Each AD5206BRUZ10 channel has an approximate –3 dB bandwidth of 100 kHz when the wiper is at midscale and terminated into a high-impedance buffer; bandwidth drops to a few kHz near the tap extremes due to the wiper capacitance interacting with R-AB. For audio or signal-processing paths above 20 kHz, the part must be treated as a DC trim element only — use a separate analog switch or PGA for the audio path. Decouple VDD with a 1 µF ceramic capacitor placed within 5 mm of the VDD pin, and add a 0.1 µF cap in parallel for high-frequency noise suppression.
The AD5206BRUZ10 supports single-supply 2.7–5.5 V operation or dual-supply ±2.3–±2.7 V operation. For bipolar AC signals that swing through ground, dual-supply operation is required to keep the wiper within its linear range; using single-supply with negative-going signals will clip the wiper at VSS. Power-on preset sets all wipers to midscale, which is the safest default for gain stages; the RS (reset) pin can force a reset to midscale at any time and should be tied to VDD through a 10 kΩ pull-up if unused.
The AD5206BRUZ10 TSSOP-24 package dissipates very little power (typically < 10 mW) because the RDAC channels carry only signal-level current (max wiper current ~ 5 mA per channel). The thermal resistance θJA of the TSSOP-24 is approximately 100 °C/W — at the maximum operating current, junction temperature rise is negligible. No thermal management is required beyond standard PCB layout practices: copper pours on VDD and GND, and via stitching to inner ground planes, will keep the part within safe operating limits across the –40 °C to +85 °C industrial temperature range.
Route the SPI bus (SDI, CLK, CS, SDO) as a tightly-coupled group with ground return underneath; keep clock traces short (< 50 mm) and add a 33 Ω series-termination resistor at the CLK driver output if the bus exceeds 25 MHz or runs longer than 75 mm. Place decoupling capacitors (1 µF + 0.1 µF) within 3 mm of VDD pin 16, and a bulk 10 µF tantalum or ceramic capacitor near the supply entry point. Reserve a guard ring of ground around each RDAC wiper trace to prevent digital noise coupling from the SPI bus into high-impedance analog signals.
규정 준수 정보
ROHS3 compliant and REACH unaffected per PartGenie parts database. Lead-free matte-tin finish. MSL-1 (Unlimited) moisture sensitivity. Not AEC-Q100 qualified — for automotive-grade digipots consult ADI automotive-portfolio datasheets.
