My Inquiry
My Account
Analog Devices Inc. AD5242BRUZ1M
- Part No.:
- AD5242BRUZ1M
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital Potentiometers
- Package:
- 16-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AD5242BRUZ1M.pdf
- Description:
- IC DGTL POT 1MOHM 256TAP 16TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:5,668
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AD5242BRUZ1M from Analog Devices is a dual-channel, I²C-compatible 256-position digital potentiometer with 1 MΩ end-to-end resistance, ±1% channel-to-channel matching, 30 ppm/°C temperature coefficient, and operation from 2.7 V to 5.5 V single supply or ±2.7 V dual supply. It serves as a programmable resistor or voltage divider in precision gain/offset adjustment circuits for instrumentation and audio signal conditioning.
For engineers reviewing the AD5242BRUZ1M datasheet, AD5242BRUZ1M pinout, AD5242BRUZ1M application, or AD5242BRUZ1M equivalent, key selection criteria include its dual-channel 1 MΩ configuration, guaranteed −40°C to +105°C operation, I²C readback capability, programmable logic outputs O1/O2, and shutdown functionality with wiper-to-B short and A-terminal open.
Technical Context
The AD5242BRUZ1M implements two independent 8-bit digitally controlled resistor ladders, each with 256 tap points and fixed 1 MΩ A-to-B resistance. Its internal power-on reset defaults both wipers to midscale (code 0x80), ensuring known startup behavior without host initialization.
It supports true bipolar operation via ±2.7 V dual supplies and features an I²C interface with address pins AD0/AD1 enabling up to four devices on one bus. The device includes two programmable logic outputs (O1, O2) and a dedicated active-low SHDN pin that forces W→B short and A open while preserving register contents.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resistance Value | 1 MΩ nominal A-to-B resistance per channel; enables high-impedance biasing and low-current gain setting. |
| Resolution | 8-bit (256 positions); provides 0.39% step resolution for fine analog control. |
| Tempco | 30 ppm/°C (rheostat mode); ensures stable resistance over −40°C to +105°C industrial range. |
| Supply Range | 2.7 V to 5.5 V single supply or ±2.7 V dual supply; supports mixed-signal systems and ac-coupled designs. |
| Interface | I²C-compatible, 400 kHz max clock; allows direct connection to microcontrollers without level-shifting. |
| Wiper Resistance | 60 Ω to 120 Ω; contributes predictable offset in low-code settings and must be accounted for in precision divider calculations. |
| Channel Matching | ±1% RAB tolerance between channels; critical for matched gain stages and differential signal paths. |
Pinout & Package
AD5242BRUZ1M is housed in a 16-lead TSSOP package (RU-16), optimized for space-constrained PCB layouts while maintaining thermal performance (θJA = 180°C/W).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 16 | A1, A2 | Fixed end of resistor ladder for Channel 1 and Channel 2; connects to high-side reference or signal source. |
| 2, 15 | W1, W2 | Digitally positioned wiper output; delivers programmable resistance (W–B or W–A) or voltage divider output. |
| 4, 14 | B1, B2 | Fixed end of resistor ladder for Channel 1 and Channel 2; typically grounded or tied to low-side reference. |
| 5 | VDD | Positive supply input; powers internal logic and resistor array; accepts 2.7 V–5.5 V. |
| 6 | SHDN | Active-low hardware shutdown; forces W→B short and A open, reducing current to <1 µA while retaining register state. |
| 7 | SCL | I²C clock input; synchronous timing reference for serial communication; 400 kHz max. |
| 8 | SDA | I²C bidirectional data line; supports readback of RDAC register values for closed-loop verification. |
| 9, 10 | AD0, AD1 | Hardware-configurable I²C address bits; set device address to 0x2C, 0x2D, 0x2E, or 0x2F for multi-device buses. |
| 11 | DGND | Digital ground reference; separates logic return path from analog resistor terminals. |
| 12 | VSS | Negative supply input; required for bipolar operation; supports −2.7 V when used with VDD = +2.7 V. |
| 13 | O2 | Programmable logic output; independently controllable via I²C instruction byte; drives LEDs, switches, or logic gates. |
| 1 | O1 | Programmable logic output; defaults to logic low at power-up; supports system-level control signaling. |
Key Features
| Feature | Design Value |
|---|---|
| Dual 256-position RDACs | Enables simultaneous, independent control of two analog paths-e.g., stereo audio channel balancing or dual-sensor offset correction. |
| 1 MΩ resistance with ±1% matching | Supports high-Z sensor interfaces and matched transimpedance amplifier feedback networks without external trimming. |
| I²C readback capability | Allows firmware to verify programmed wiper position after write, essential for safety-critical or calibration-sensitive applications. |
| Programmable O1/O2 outputs | Eliminates need for external GPIO expanders; outputs drive ≥1.6 mA sink / 40 µA source, sufficient for LED indicators or analog switch enable lines. |
| Hardware SHDN + software SD bit | Provides redundant shutdown control: pin-based for system-level power management and I²C-based for channel-specific sleep modes. |
Applications
| Audio Signal Level Control | Instrumentation Offset Calibration |
|---|---|
|
Use Scenario: Adjusting volume or balance in professional audio mixers with microcontroller-based UI. IC Role / Device Role / Timing Role: Dual-channel digital potentiometer acting as programmable voltage divider for left/right channel signal attenuation. Use Value: Eliminates mechanical pot wear and manual calibration; 1 MΩ value minimizes loading on op-amp outputs while supporting >100 dB dynamic range. |
Use Scenario: Auto-calibrating zero-drift amplifiers in portable test equipment. IC Role / Device Role / Timing Role: Precision offset nulling element in op-amp feedback loop, updated during factory calibration sequence. Use Value: ±1% channel matching ensures consistent nulling across dual-input channels; 30 ppm/°C tempco maintains calibration stability over operating temperature range. |
| Programmable Sensor Bias Networks | Line Impedance Matching |
|
Use Scenario: Configuring bias current for MEMS pressure sensors in medical wearable devices. IC Role / Device Role / Timing Role: High-value rheostat (W–B) setting precise DC bias current into sensor bridge. Use Value: 1 MΩ resistance enables sub-1 µA bias currents; low temperature drift prevents drift-induced measurement error during extended battery operation. |
Use Scenario: Dynamically adapting termination impedance in industrial RS-485 nodes for varying cable lengths. IC Role / Device Role / Timing Role: Programmable parallel termination resistor between differential lines, adjusted via I²C during link initialization. Use Value: 1 MΩ maximum value supports high-impedance fail-safe biasing; dual-channel allows independent A/B line tuning for asymmetric trace mismatches. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar digital potentiometer applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5242BRUZ100 | Same dual-channel architecture and pinout, but 100 kΩ nominal resistance (vs. 1 MΩ). | Better suited for lower-impedance gain-setting (e.g., op-amp non-inverting configurations) and higher current rheostat use. | Select when circuit requires <100 kΩ end-to-end resistance or tighter wiper resistance tolerance (60–120 Ω vs. same spec). |
| MAX5487ETE+T | Single-channel, 256-tap, 100 kΩ, SPI interface, no programmable logic outputs, −40°C to +85°C rating. | Limited to single-path adjustment; lacks O1/O2 outputs and extended temperature support. | Choose only if SPI interface is mandatory and dual-channel functionality is unnecessary; not suitable for −40°C to +105°C environments. |
Compared with AD5242BRUZ1M, AD5242BRUZ100 offers lower resistance for higher current handling but sacrifices high-Z bias capability, while MAX5487ETE+T trades dual-channel flexibility, programmable outputs, and extended temperature range for SPI compatibility and lower cost in single-channel use cases.
Availability
AD5242BRUZ1M is available at Aetrix Electronics and suitable for instrumentation calibration, audio signal conditioning, sensor biasing, and industrial communications requiring stable component supply across extended temperature and long production lifecycles.
Supply support for AD5242BRUZ1M includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets since 1965.
The AD5242BRUZ1M belongs to the AD5241/AD5242 family of I²C-compatible digital potentiometers designed specifically for replacing mechanical trimmers in precision analog control loops where reliability, temperature stability, and programmability are critical.
FAQ
What is the maximum operating temperature range for the AD5242BRUZ1M?
The AD5242BRUZ1M is fully specified and guaranteed to operate from −40°C to +105°C. This extended temperature range is validated across all electrical parameters in the datasheet, including resistance matching, tempco, and I²C timing, making it suitable for under-hood automotive modules and industrial control cabinets without derating.
Does the AD5242BRUZ1M support dual-supply operation, and what are the limits?
Yes, the AD5242BRUZ1M supports true dual-supply operation with VDD and VSS rails. The specified dual-supply range is ±2.7 V - meaning VDD = +2.7 V and VSS = −2.7 V - enabling bipolar signal handling in AC-coupled applications such as audio preamplifiers and sensor front-ends where terminal voltages may swing above and below ground.
How does the AD5242BRUZ1M handle power-on initialization?
The AD5242BRUZ1M features an internal power-on reset that automatically sets both wiper positions to midscale (code 0x80) at power-up. This behavior is independent of I²C activity and ensures repeatable, known resistance states (RWA ≈ RWB ≈ 500 kΩ for the 1 MΩ version) without requiring host firmware initialization, simplifying system startup and fault recovery.
Can the AD5242BRUZ1M's O1 and O2 outputs drive an LED directly?
Yes, the O1 and O2 outputs of the AD5242BRUZ1M can directly drive standard LEDs. Each output sinks up to 1.6 mA at VOL ≤ 0.4 V (with VDD = 5 V), sufficient for indicator LEDs with series resistors ≥3 kΩ. Their logic states are independently programmable via the I²C instruction byte and retain state through power cycles when configured as latched outputs.
Is the AD5242BRUZ1M pin-compatible with other variants in the AD5242 family?
Yes, all AD5242 variants-including AD5242BRUZ10, AD5242BRUZ100, and AD5242BRUZ1M-share identical 16-lead TSSOP (RU-16) packaging and pinout. Resistance value (10 kΩ, 100 kΩ, or 1 MΩ) is the sole functional difference; no PCB layout changes are required when substituting between them, provided the application's resistance range and wiper current limits remain within specification.
AD5242BRUZ1M Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Taper:
- Linear
- Configuration:
- Potentiometer
- Number of Circuits:
- 2
- Number of Taps:
- 256
- Resistance (Ohms):
- 1M
- Interface:
- I2C
- Memory Type:
- Volatile
- Voltage - Supply:
- 2.7V ~ 5.5V, ±2.3V ~ 2.7V
- Features:
- Selectable Address
- Tolerance:
- -30%, +50%
- Temperature Coefficient (Typ):
- 30ppm/°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 16-TSSOP
- Operating Temperature:
- -40°C ~ 105°C
- Resistance - Wiper (Ohms) (Typ):
- 60
AD5242BRUZ1M FAQ
1.How can I place an order for AD5242BRUZ1M through Aetrix?
Please submit a Request for Quotation (RFQ) for AD5242BRUZ1M on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for AD5242BRUZ1M reliable?
The price and inventory of AD5242BRUZ1M are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD5242BRUZ1M is usually 5 days.
3.What payment methods are accepted for AD5242BRUZ1M?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD5242BRUZ1M transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD5242BRUZ1M?
AD5242BRUZ1M orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD5242BRUZ1M order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for AD5242BRUZ1M?
For technical support, including AD5242BRUZ1M datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD5242BRUZ1M requirements.
6.How does Aetrix verify that AD5242BRUZ1M is sourced from the original manufacturer or authorized distributors?
All AD5242BRUZ1M products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AD5242BRUZ1M meets industry standards.
7.What is the process for return or replacement of AD5242BRUZ1M?
All AD5242BRUZ1M units undergo pre-shipment inspection (PSI). If there is an issue with AD5242BRUZ1M, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The AD5242BRUZ1M part is unused and in its original packaging.
Return procedure for AD5242BRUZ1M:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AD5242BRUZ1M Tags
-
MCP4018T-103E/LT
Microchip Technology
-
MCP4018T-503E/LT
Microchip Technology
-
MCP4011T-103E/SN
Microchip Technology
-
MCP4018T-104E/LT
Microchip Technology
-
MCP4017T-503E/LT
Microchip Technology
-
MCP4018T-502E/LT
Microchip Technology
-
MCP4017T-103E/LT
Microchip Technology
-
MCP4531T-103E/MF
Microchip Technology
-
MCP4021T-202E/SN
Microchip Technology
-
MCP4023T-103E/CH
Microchip Technology
-
MCP4022T-503E/CH
Microchip Technology
-
MCP4551T-502E/MS
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
