IC DGTL POT 256POS 14-TSSOP T/R

 

AD5241BRUZ1M-R7

Manufacturer Part NumberAD5241BRUZ1M-R7
DescriptionIC DGTL POT 256POS 14-TSSOP T/R
ManufacturerAnalog Devices Inc
AD5241BRUZ1M-R7 datasheets

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Specifications of AD5241BRUZ1M-R7

Taps256Resistance (ohms)1M
Number Of Circuits1Temperature Coefficient30 ppm/°C Typical
Memory TypeVolatileInterfaceI²C, 2-Wire Serial
Voltage - Supply2.7 V ~ 5.5 V, ±2.3 V ~ 2.7 VOperating Temperature-40°C ~ 105°C
Mounting TypeSurface MountPackage / Case14-TSSOP
Resistance In Ohms1.00MLead Free Status / RoHS StatusLead free / RoHS Compliant
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FEATURES
256 positions
10 kΩ, 100 kΩ, 1 MΩ
Low temperature coefficient: 30 ppm/°C
Internal power on midscale preset
Single-supply 2.7 V to 5.5 V or dual-supply ±2.7 V for ac or
bipolar operation
2
I
C-compatible interface with readback capability
Extra programmable logic outputs
Self-contained shutdown feature
Extended temperature range: −40°C to +105°C
APPLICATIONS
Multimedia, video, and audio
Communications
Mechanical potentiometer replacement
Instrumentation: gain, offset adjustment
Programmable voltage-to-current conversion
Line impedance matching
GENERAL DESCRIPTION
The AD5241/AD5242 provide a single-/dual-channel, 256-
position, digitally controlled variable resistor (VR) device. These
devices perform the same electronic adjustment function as a
potentiometer, trimmer, or variable resistor. Each VR offers a
completely programmable value of resistance between the A
terminal and the wiper, or the B terminal and the wiper. For the
AD5242, the fixed A-to-B terminal resistance of 10 kΩ, 100 kΩ,
or 1 MΩ has a 1% channel-to-channel matching tolerance. The
nominal temperature coefficient of both parts is 30 ppm/°C.
Rev. C
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other
rights of third parties that may result from its use. Specifications subject to change without notice. No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarks and registered trademarks are the property of their respective owners.
256-Position Digital Potentiometers
FUNCTIONAL BLOCK DIAGRAM
A
W
1
1
SHDN
V
DD
RDAC
REGISTER 1
V
SS
ADDR
DECODE
AD5241
SDA
SERIAL INPUT REGISTER
SCL
GND
AD0
Figure 1. AD5241 Functional Block Diagram
A
W
B
1
1
SHDN
V
DD
RDAC
REGISTER 1
V
SS
ADDR
DECODE
AD5242
1
SDA
SERIAL INPUT REGISTER
SCL
GND
AD0
Figure 2. AD5242 Functional Block Diagram
Wiper position programming defaults to midscale at system
power on. When powered, the VR wiper position is programmed
2
by an I
C®-compatible, 2-wire serial data interface. Both parts
have two extra programmable logic outputs available that
enable users to drive digital loads, logic gates, LED drivers, and
analog switches in their system.
The AD5241/AD5242 are available in surface-mount, 14-lead
SOIC and 16-lead SOIC packages and, for ultracompact solutions,
14-lead TSSOP and 16-lead TSSOP packages. All parts are
guaranteed to operate over the extended temperature range of
−40°C to +105°C.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
Fax: 781.461.3113
©2001–2009 Analog Devices, Inc. All rights reserved.
2
I
C-Compatible,
AD5241/AD5242
B
O
O
1
1
2
REGISTER 2
8
PWR-ON
RESET
AD1
A
W
B
O
O
1
2
2
2
1
2
REGISTER
RDAC
REGISTER 2
8
PWR-ON
RESET
AD1
www.analog.com

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AD5241BRUZ1M-R7 Summary of contents

  • Page 1

    FEATURES 256 positions 10 kΩ, 100 kΩ, 1 MΩ Low temperature coefficient: 30 ppm/°C Internal power on midscale preset Single-supply 2 5 dual-supply ±2.7 V for ac or bipolar operation 2 I C-compatible interface with readback ...

  • Page 2

    AD5241/AD5242 TABLE OF CONTENTS Features .............................................................................................. 1 Applications ....................................................................................... 1 Functional Block Diagram .............................................................. 1 General Description ......................................................................... 1 Revision History ............................................................................... 2 Specifications ..................................................................................... 3 10 kΩ, 100 kΩ, 1 MΩ Version .................................................... 3 Timing Diagrams .......................................................................... 5 Absolute ...

  • Page 3

    SPECIFICATIONS 10 kΩ, 100 kΩ, 1 MΩ VERSION −40°C < Table 1. Parameter DC CHARACTERISTICS, RHEOSTAT MODE (SPECIFICATIONS APPLY TO ...

  • Page 4

    AD5241/AD5242 Parameter DYNAMIC CHARACTERISTICS −3 dB Bandwidth Total Harmonic Distortion V Settling Time W Resistor Noise Voltage INTERFACE TIMING CHARACTERISTICS 5, 9 (APPLIES TO ALL PARTS ) SCL Clock Frequency Bus Free Time Between Stop and Start, ...

  • Page 5

    TIMING DIAGRAMS SDA t 1 SCL Data of AD5241/AD5242 is accepted from the I Table AD1 AD0 Slave Address Byte where start condition P = stop ...

  • Page 6

    AD5241/AD5242 ABSOLUTE MAXIMUM RATINGS T = 25°C, unless otherwise noted. A Table 3. Parameter V to GND GND GND ...

  • Page 7

    PIN CONFIGURATIONS AND FUNCTION DESCRIPTIONS AD5241 TOP VIEW DD (Not to Scale) SHDN 5 10 DGND SCL 6 9 AD1 SDA ...

  • Page 8

    AD5241/AD5242 TYPICAL PERFORMANCE CHARACTERISTICS 1.0 0 +2.7V/ –0 +5.5V/0V, ±2. –1 128 160 CODE (Decimal) Figure 8. RDNL vs. Code 1 +2.7V/0V ...

  • Page 9

    TEMPERATURE (°C) Figure 14. Shutdown Current vs. Temperature 10MΩ VERSION 50 10kΩ VERSION 40 100kΩ VERSION –10 –20 – ...

  • Page 10

    AD5241/AD5242 6 0xFF 0 0x80 –6 0x40 –12 0x20 –18 0x10 –24 0x08 –30 0x04 –36 0x02 –42 0x01 –48 –54 100 1k FREQUENCY (Hz) Figure 20. AD5242 100 kΩ Gain vs. Frequency vs. Code –12 –18 –24 –30 –36 ...

  • Page 11

    TEST CIRCUITS Figure 22 to Figure 30 define the test conditions used in the product specifications table. DUT LSB = V+/ Figure 22. Potentiometer Divider Nonlinearity Error (INL, DNL) NO ...

  • Page 12

    AD5241/AD5242 THEORY OF OPERATION The AD5241/AD5242 provide a single-/dual-channel, 256- position digitally controlled variable resistor (VR) device. The terms VR, RDAC, and programmable resistor are commonly used interchangeably to refer to digital potentiometer. To program the VR settings, refer to ...

  • Page 13

    The typical distribution of the nominal resistance R channel to channel matches within ±1% for AD5242. Device- to-device matching is process lot dependent, and it is possible to have ±30% variation. Because the resistance element is processed in thin film ...

  • Page 14

    AD5241/AD5242 4. Unlike the write mode, the data byte follows immediately after the acknowledgment of the slave address byte in Frame 2 read mode. Data is transmitted over the serial bus in sequences of nine clock pulses (slightly different from ...

  • Page 15

    ADDITIONAL PROGRAMMABLE LOGIC OUTPUT The AD5241/AD5242 feature additional programmable logic outputs, O and O , that can be used to drive digital load, analog 1 2 switches, and logic gates. They can also be used as a self-contained shutdown preset ...

  • Page 16

    AD5241/AD5242 OUTLINE DIMENSIONS 4.50 4.40 4.30 PIN 1 1.05 1.00 0.80 0.15 0.05 COPLANARITY 0.10 4.00 (0.1575) 3.80 (0.1496) 0.25 (0.0098) 0.10 (0.0039) COPLANARITY 0.10 5.10 5.00 4. 6.40 BSC 1 7 0.65 BSC 1.20 0.20 MAX 0.09 ...

  • Page 17

    BSC 4. PIN 1 1.20 MAX 0.15 0.20 0.05 0.09 0.30 0.65 0.19 SEATING BSC PLANE COPLANARITY 0.10 COMPLIANT TO JEDEC STANDARDS MO-153-AB Figure 40. 16-Lead Thin Shrink Small Outline ...

  • Page 18

    ... AD5241BRZ10 1 AD5241BRZ10-RL7 1 AD5241BRU10 1 AD5241BRU10-REEL7 1 AD5241BRUZ10 1 AD5241BRUZ10-R7 1 AD5241BR100 1 AD5241BR100-REEL7 1 AD5241BRZ100 1 AD5241BRZ100-RL7 1 AD5241BRU100 1 AD5241BRU100-REEL7 1 AD5241BRUZ100 1 AD5241BRUZ100-R7 1 AD5241BR1M 1 AD5241BRZ1M 1 AD5241BRZ1M-REEL 1 AD5241BRU1M 1 AD5241BRU1M-REEL7 1 AD5241BRUZ1M 1 AD5241BRUZ1M-R7 1 AD5242BR10 2 AD5242BR10-REEL7 2 AD5242BRZ10 2 AD5242BRZ10-REEL7 2 AD5242BRU10 2 AD5242BRU10-REEL7 2 AD5242BRUZ10 2 AD5242BRUZ10-RL7 2 AD5242BR100 2 AD5242BR100-REEL7 2 AD5242BRZ100 2 AD5242BRZ100-REEL7 2 AD5242BRU100 2 AD5242BRU100-REEL7 2 AD5242BRUZ100 2 AD5242BRUZ100-RL7 2 AD5242BR1M 2 AD5242BRZ1M 2 AD5242BRU1M 2 AD5242BRU1M-REEL7 ...

  • Page 19

    NOTES Rev Page AD5241/AD5242 ...

  • Page 20

    AD5241/AD5242 NOTES ©2001–2009 Analog Devices, Inc. All rights reserved. Trademarks and registered trademarks are the property of their respective owners. D00926-0-12/09(C) Rev Page ...

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