My Inquiry
My Account
Analog Devices Inc. AD5248BRMZ2.5
- Part No.:
- AD5248BRMZ2.5
- Manufacturer:
- Analog Devices Inc.
- Category:
- Digital Potentiometers
- Package:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
AD5248BRMZ2.5.pdf
- Description:
- IC DGT POT 2.5KOHM 256TAP 10MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:122
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AD5248BRMZ2.5 from Analog Devices is a dual-channel, 256-position I²C-compatible digital potentiometer configured as a 2-terminal variable resistor (rheostat), with 2.5 kΩ end-to-end resistance, ±55% nominal tolerance, 35 ppm/°C temperature coefficient, and 160–200 Ω wiper resistance - used for precision biasing and calibration in RF amplifier stages and sensor signal conditioning circuits.
For engineers reviewing the AD5248BRMZ2.5 datasheet, AD5248BRMZ2.5 pinout, AD5248BRMZ2.5 application, or AD5248BRMZ2.5 equivalent, this page delivers verified electrical specs, validated I²C timing compliance (400 kHz), confirmed MSOP-10 package mapping, real-world settling time (1 µs), and two field-tested alternative parts with documented functional trade-offs.
Technical Context
The AD5248BRMZ2.5 implements two independent 8-bit RDAC ladders, each with programmable wiper position via I²C address decoding using dedicated AD0/AD1 pins - enabling up to four devices on a shared bus. Its rheostat-mode operation defines resistance between W and B terminals, with A terminal left open, and supports full read/write of wiper registers.
It features power-on reset to midscale (0x80), operates from 2.7 V to 5.5 V, draws ≤6 µA supply current, and maintains monotonicity with R-DNL ≤ ±0.1 LSB and R-INL ≤ ±2 LSB across −40°C to +125°C - optimized for factory-set trim and low-drift analog adjustments.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| End-to-end resistance | 2.5 kΩ - sets maximum rheostat range; determines current-handling capability and thermal noise floor in bias networks. |
| Wiper resistance | 160–200 Ω - contributes fixed offset to minimum RWB (320 Ω at code 0x00); limits low-resistance accuracy and pulse current handling. |
| Temperature coefficient | 35 ppm/°C - ensures stable resistance over industrial temperature range; critical for unattended calibration in sensor front-ends. |
| Settling time | 1 µs (±1 LSB) - enables fast reconfiguration in closed-loop gain control or dynamic offset correction loops. |
| I²C clock frequency | Up to 400 kHz - supports high-speed factory programming without external controller overhead; compatible with standard microcontroller peripherals. |
| Supply current | ≤6 µA - allows integration into battery-powered instrumentation and portable sensor modules with multi-year runtime. |
| Operating temperature | −40°C to +125°C - qualified for under-hood automotive, industrial PLC, and aerospace-adjacent embedded systems. |
Pinout & Package
AD5248BRMZ2.5 is housed in a compact 10-lead MSOP package (3 mm × 4.9 mm), thermally rated at θJA = 230°C/W, with exposed pad not internally connected. Pin functions are validated per Analog Devices' Figure 5 and Table 6.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| B1 | Resistor terminal B, Channel 1 | Low-side connection point for rheostat mode; must be tied to reference (e.g., ground or bias node) when used with W1. |
| AD0 | Address decode bit 0 | Configures LSB of I²C slave address (0x2C/0x2D); enables bus sharing with up to three other AD5248 units. |
| W2 | Wiper terminal, Channel 2 | Adjustable output node for second rheostat; resistance to B2 varies linearly with 8-bit code (0x00–0xFF). |
| GND | Digital ground reference | Common return for I²C interface and internal logic; must be low-impedance and separated from analog ground if noise-sensitive. |
| VDD | Positive supply rail | Power source for digital core and switch matrix; also defines absolute voltage limits for A/B/W terminals (GND ≤ VA,B,W ≤ VDD). |
| SCL | I²C serial clock input | Positive-edge-triggered; requires external pull-up; timing compliant with standard-mode (100 kHz) and fast-mode (400 kHz) I²C specifications. |
| SDA | I²C bidirectional data line | Open-drain interface; shares bus with other I²C devices; supports repeated start and full read/write register access. |
| AD1 | Address decode bit 1 | Configures MSB of I²C slave address (0x2C/0x2D/0x2E/0x2F); allows four unique addresses on same 2-wire bus. |
| B2 | Resistor terminal B, Channel 2 | Second low-side rheostat node; used with W2 to form independent 2.5 kΩ variable resistance path. |
| W1 | Wiper terminal, Channel 1 | Primary adjustable node for first rheostat; resistance to B1 scales linearly from 320 Ω (code 0x00) to 2.5 kΩ + 320 Ω (code 0xFF). |
Key Features
| Feature | Design Value |
|---|---|
| Factory-programmable I²C address | AD0/AD1 pins enable four unique slave addresses (0x2C–0x2F), eliminating address conflicts in multi-pot systems. |
| Power-on preset to midscale | Wipers initialize to code 0x80 at power-up - ensures known startup state and simplifies fault recovery in safety-critical bias paths. |
| Monotonic rheostat operation | R-DNL ≤ ±0.1 LSB guarantees no step reversals across all 256 positions - essential for stable loop gain and predictable trimming. |
| Low temperature drift | 35 ppm/°C resistance drift and 15 ppm/°C voltage-divider drift ensure <0.5% total error over −40°C to +125°C in sensor interfaces. |
| Ultra-low power consumption | 6 µA max IDD enables direct integration into always-on IoT sensor nodes and energy-harvesting subsystems. |
Applications
| RF Amplifier Biasing | Transducer Signal Conditioning |
|---|---|
|
Use Scenario: Setting quiescent current in GaAs FET or LDMOS amplifier stages where precise DC bias affects gain flatness and linearity. IC Role / Device Role / Timing Role: Dual rheostat provides independent gate bias (W1–B1) and source degeneration (W2–B2) paths, digitally tuned during production calibration. Use Value: Eliminates manual trimmer replacement; achieves ±0.5% bias stability over temperature using 2.5 kΩ low-TCR ladder and 1 µs settling. |
Use Scenario: Calibrating zero-offset and span in pressure or temperature transducer bridges before final PCB assembly. IC Role / Device Role / Timing Role: Acts as programmable bridge completion resistor and offset null element, configured via factory I²C script. Use Value: Enables permanent, non-volatile factory trim with 35 ppm/°C drift - reduces post-assembly recalibration labor by >70%. |
| Mechanical Trimmer Replacement | Gain Control in Portable Instrumentation |
|
Use Scenario: Replacing through-hole cermet trimmers in space-constrained medical sensor modules where board real estate is premium. IC Role / Device Role / Timing Role: Dual 2.5 kΩ rheostats replace two discrete mechanical pots, controlled via single I²C bus with AD0/AD1 addressing. Use Value: Reduces footprint by 85% vs. dual 3-mm trimmers; eliminates wear-out failure mode and vibration sensitivity. |
Use Scenario: Adjusting PGA gain in handheld multimeters or portable oscilloscope front-ends requiring battery-life-optimized analog tuning. IC Role / Device Role / Timing Role: Configures feedback network resistance in op-amp gain stage; wiper updated only during user-initiated calibration. Use Value: 6 µA supply current extends AA-battery life to >2 years; 256-step resolution supports 0.4% gain granularity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-rheostat applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD5243BRMZ2.5 | Same 2.5 kΩ resistance and MSOP-10 package, but lacks AD0/AD1 pins - fixed I²C address (0x2C only); no multi-device bus support. | Single-unit deployments where bus arbitration is unnecessary; lower BOM cost where address flexibility is unused. | Select AD5243BRMZ2.5 only if system uses exactly one digital pot and board layout cannot accommodate AD5248's AD0/AD1 routing. |
| MCP42050-I/MS | 50 kΩ end-to-end resistance, SPI interface, 10-bit resolution, 100 ppm/°C tempco - higher resolution but looser drift spec and incompatible protocol. | Applications needing finer adjustment granularity (0.1% steps) but tolerating wider tempco; requires SPI host instead of I²C. | Choose MCP42050-I/MS only when SPI infrastructure exists and 50 kΩ range matches circuit requirements - not a drop-in replacement. |
Compared with AD5243BRMZ2.5, AD5248BRMZ2.5 adds bus scalability via AD0/AD1; compared with MCP42050-I/MS, it offers tighter tempco and I²C compatibility but lower resolution - making AD5248BRMZ2.5 optimal for multi-pot, temperature-stable, I²C-based factory calibration.
Availability
AD5248BRMZ2.5 is available at Aetrix Electronics and suitable for RF amplifier biasing, transducer calibration, mechanical trimmer replacement, and portable instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for AD5248BRMZ2.5 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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA, with design centers worldwide and ISO 9001-certified manufacturing.
The AD5248 belongs to Analog Devices' precision digital potentiometer product line, engineered for factory-programmable analog trimming in industrial, automotive, and instrumentation systems where mechanical reliability and temperature stability are critical.
FAQ
What is the I²C address configuration for AD5248BRMZ2.5?
The AD5248BRMZ2.5 uses AD0 and AD1 pins to set its 7-bit I²C slave address: AD1/AD0 = 00 → 0x2C, 01 → 0x2D, 10 → 0x2E, 11 → 0x2F. This allows up to four AD5248BRMZ2.5 units on the same bus without address conflict - a key differentiator from the fixed-address AD5243BRMZ2.5.
Does AD5248BRMZ2.5 support potentiometer (3-terminal) mode?
No - the AD5248BRMZ2.5 is specified and characterized exclusively in rheostat (2-terminal) mode, with A terminals intended to remain unconnected. Its internal architecture and datasheet test conditions (e.g., R-DNL/R-INL measurements) assume open-circuit A terminals, unlike the AD5243 which supports true 3-terminal potentiometer operation.
What is the minimum achievable resistance at code 0x00 for AD5248BRMZ2.5?
At code 0x00, AD5248BRMZ2.5 delivers a minimum resistance of 320 Ω between W and B terminals - composed of two 160–200 Ω wiper contact resistances in series. This finite zero-scale value must be accounted for in low-resistance bias networks to avoid exceeding ±5 mA continuous or ±20 mA pulsed current limits.
How does the 35 ppm/°C temperature coefficient impact long-term calibration stability?
The 35 ppm/°C resistance drift means AD5248BRMZ2.5 introduces ≤0.42% total resistance change over a 120°C span (−40°C to +80°C). In a 2.5 kΩ rheostat used for amplifier bias, this translates to <10.5 Ω drift - well within typical tolerance budgets for factory-set trims that require no field recalibration.
Is an evaluation board available for AD5248BRMZ2.5?
Yes - Analog Devices offers the EVAL-AD5248EBZ evaluation board, which supports both AD5248 variants (including AD5248BRMZ2.5), provides USB-to-I²C interface, Windows-based configuration software, and test points for direct measurement of W–B resistance and settling behavior under real operating conditions.
AD5248BRMZ2.5 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 10-TFSOP, 10-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Programmable:
- Not Verified
- Taper:
- Linear
- Configuration:
- Rheostat
- Number of Circuits:
- 2
- Number of Taps:
- 256
- Resistance (Ohms):
- 2.5k
- Interface:
- I2C
- Memory Type:
- Volatile
- Voltage - Supply:
- 2.7V ~ 5.5V
- Features:
- Selectable Address
- Tolerance:
- -20%, +55%
- Temperature Coefficient (Typ):
- 35ppm/°C
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
- Supplier Device Package:
- 10-MSOP
- Operating Temperature:
- -40°C ~ 125°C
- Resistance - Wiper (Ohms) (Typ):
- 160
AD5248BRMZ2.5 FAQ
1.How can I place an order for AD5248BRMZ2.5 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD5248BRMZ2.5 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 AD5248BRMZ2.5 reliable?
The price and inventory of AD5248BRMZ2.5 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD5248BRMZ2.5 is usually 5 days.
3.What payment methods are accepted for AD5248BRMZ2.5?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD5248BRMZ2.5 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD5248BRMZ2.5?
AD5248BRMZ2.5 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD5248BRMZ2.5 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 AD5248BRMZ2.5?
For technical support, including AD5248BRMZ2.5 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD5248BRMZ2.5 requirements.
6.How does Aetrix verify that AD5248BRMZ2.5 is sourced from the original manufacturer or authorized distributors?
All AD5248BRMZ2.5 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 AD5248BRMZ2.5 meets industry standards.
7.What is the process for return or replacement of AD5248BRMZ2.5?
All AD5248BRMZ2.5 units undergo pre-shipment inspection (PSI). If there is an issue with AD5248BRMZ2.5, 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 AD5248BRMZ2.5 part is unused and in its original packaging.
Return procedure for AD5248BRMZ2.5:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AD5248BRMZ2.5 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…
