Analog Devices Inc.（ADI） AD5254BRUZ10-RL7

View All Display Drivers by Analog Devices Inc.（ADI）

Part Number:
AD5254BRUZ10-RL7
Manufacturer:
Analog Devices Inc.（ADI）
Category:
Display Drivers
RoHs:
RoHS Compliant
Datasheet:
AD5254BRUZ10-RL7_Datesheet
Description:
IC DGT POT 10KOHM 256TAP 20TSSOP
In stock 9,065

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Specifications

Type

Paramete

Type

Paramete

Temperature Coefficient (Typ)

650ppm/°C

Resistance (Ohms)

10k

Tolerance

±20%

Qualification

Package / Case

20-TSSOP (0.173", 4.40mm Width)

Number of Taps

256

Operating Temperature

-40°C ~ 105°C

Interface

I2C

Mounting Type

Surface Mount

Configuration

Potentiometer

Grade

Number of Circuits

Memory Type

Non-Volatile

Voltage - Supply

2.7V ~ 5.5V, ±2.25V ~ 2.75V

Resistance - Wiper (Ohms) (Typ)

200

Supplier Device Package

20-TSSOP

Taper

Linear

Features

Selectable Address

Overview

AD5254BRUZ10‑RL7 Datasheet Summary

1. Basic Information

Part Number: AD5254BRUZ10‑RL7
Manufacturer: Analog Devices Inc.
Device Type: Quad‑Channel, 256‑Position, I²C Nonvolatile Digital Potentiometer (RDAC)
Resolution: 8‑bit (256 steps)
Nominal Resistance: 10 kΩ
Package: 20‑Lead TSSOP (RU‑20), RoHS Compliant
Packing: Tape and Reel, 1000 units per reel
Temperature Grade: Industrial
Operating Temperature: −40 °C to +105 °C
Document Revision: Rev. D

2. Key Features

Quad independent digitally controlled potentiometer channels
Nonvolatile EEMEM stores wiper settings; auto‑restore on power‑up (typ 300 µs)
I²C serial interface (up to 400 kHz), supports 4 devices via AD0/AD1
Write protection (WP) for EEMEM and RDAC registers
Predefined commands: ±6 dB (×2 / ÷2), linear increment/decrement, sync update
Stores resistance tolerance in nonvolatile memory for precision applications
12 extra bytes EEMEM for user data (calibration, serial numbers, etc.)
Single supply: 2.7 V to 5.5 V; dual supply: ±2.25 V to ±2.75 V
Data retention: 100 years typ at 55 °C
Endurance: 100k write cycles per JEDEC standard
Wiper resistance: typ 75 Ω at 5 V, 200 Ω at 3 V
Channel matching: typ 0.15%

3. Electrical Specifications (10 kΩ Version, TA = −40 °C to 105 °C)

表格

Parameter	Conditions	Min	Typ	Max	Unit
Resolution	—	—	8	—	Bits
R‑INL	Rheostat mode	−0.75	±0.25	+0.75	LSB
R‑DNL	Rheostat mode	−1.00	±0.25	+1.00	LSB
Resistance Tolerance	—	−20	—	+20	%
Tempco (Rheostat)	—	—	650	—	ppm/°C
−3 dB Bandwidth	Midscale	—	400	—	kHz
Settling Time	VW, 10 kΩ	—	1.5	—	µs
VIH (Logic High)	VDD = 5 V	2.4	—	—	V
VIL (Logic Low)	VDD = 5 V	—	—	0.8	V
IDD (Operating)	VDD = 5 V	—	—	15	µA
IDD_STORE	EEMEM write	—	—	35	mA
EEMEM Store Time	—	—	—	26	ms
EEMEM Rewrite Time	—	—	540	—	µs

4. Absolute Maximum Ratings

VDD to GND: −0.3 V to +7 V
VSS to GND: +0.3 V to −7 V
VA, VB, VW: VSS to VDD
Continuous terminal current (10 kΩ): ±500 µA
ESD sensitive; standard handling precautions required

5. Pin Configuration (TSSOP‑20)

表格

Pin	Name	Function
1	W0	Wiper, RDAC0
2	B0	Terminal B, RDAC0
3	A0	Terminal A, RDAC0
4	AD0	I²C Address Bit 0
5	WP	Write Protect (active low)
6	W1	Wiper, RDAC1
7	B1	Terminal B, RDAC1
8	A1	Terminal A, RDAC1
9	SDA	I²C Serial Data
10	VSS	Negative Supply / GND
11	A2	Terminal A, RDAC2
12	B2	Terminal B, RDAC2
13	W2	Wiper, RDAC2
14	SCL	I²C Serial Clock
15	DGND	Digital Ground
16	AD1	I²C Address Bit 1
17	A3	Terminal A, RDAC3
18	B3	Terminal B, RDAC3
19	W3	Wiper, RDAC3
20	VDD	Positive Supply

6. I²C Interface

Bus Speed: Up to 400 kHz
Slave Address: 01011 + AD1 + AD0 + R/W
Supports:
Write protect (WP low) locks EEMEM and RDAC from writes

7. Functional Description

Operates as rheostat (2‑terminal variable resistor) or potentiometer (3‑terminal voltage divider)
Each channel: A, B (ends), W (wiper)
Wiper position set by 8‑bit RDAC register (0x00 to 0xFF)
EEMEM saves settings; restored at power‑on
±6 dB commands = ×2 / ÷2 wiper code (fast volume/brightness)
Tolerance data stored in ROM for accurate absolute resistance calculation

8. Applications

Mechanical potentiometer replacement
RGB LED backlight and white LED brightness control
Programmable gain/offset, filters, attenuators
Calibration, sensor trimming
Power supply adjustment
RF PA bias control

9. Reliability & Package

Thermal resistance θJA: 143 °C/W
Soldering: 300 °C (10 s), 215 °C vapor phase (60 s)
Green/RoHS compliant, halogen‑free

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