AD5260BRU200-REEL7 Analog Devices Inc, AD5260BRU200-REEL7 Datasheet

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AD5260BRU200-REEL7

Manufacturer Part Number
AD5260BRU200-REEL7
Description
IC DGTL POT SNGL 256POS 14-TSSOP
Manufacturer
Analog Devices Inc
Datasheet

Specifications of AD5260BRU200-REEL7

Rohs Status
RoHS non-compliant
Taps
256
Resistance (ohms)
200K
Number Of Circuits
1
Temperature Coefficient
35 ppm/°C Typical
Memory Type
Volatile
Interface
4-Wire SPI Serial
Voltage - Supply
4.5 V ~ 16.5 V, ±4.5 V ~ 5.5 V
Operating Temperature
-40°C ~ 85°C
Mounting Type
Surface Mount
Package / Case
14-TSSOP
Resistance In Ohms
200K
Other names
AD5260BRU200REEL7
a
GENERAL DESCRIPTION
The AD5260/AD5262 provide a single- or dual-channel, 256-
position, digitally controlled variable resistor (VR) device.* These
devices perform the same electronic adjustment function as a
potentiometer or variable resistor. Each channel of the AD5260/
AD5262 contains a fixed resistor with a wiper contact that taps the
fixed resistor value at a point determined by a digital code loaded
into the SPI-compatible serial-input register. The resistance between
the wiper and either end point of the fixed resistor varies linearly
with respect to the digital code transferred into the VR latch. The
variable resistor offers a completely programmable value of resistance,
between the A terminal and the wiper or the B terminal and the wiper.
The fixed A to B terminal resistance of 20 kW, 50 kW, or 200 kW has
a nominal temperature coefficient of 35 ppm/∞C. Unlike the majority
of the digital potentiometers in the market, these devices can operate
up to 15 V or ±5 V provided proper supply voltages are furnished.
Each VR has its own VR latch, which holds its programmed resistance
value. These VR latches are updated from an internal serial-to-parallel
shift register, which is loaded from a standard 3-wire serial-input
digital interface. The AD5260 contains an 8-bit serial register
while the AD5262 contains a 9-bit serial register. Each bit is clocked
into the register on the positive edge of the CLK. The AD5262
address bit determines the corresponding VR latch to be loaded
with the last 8 bits of the data word during the positive edging of
CS strobe. A serial data output pin at the opposite end of the serial
register enables simple daisy chaining in multiple VR applications
without additional external decoding logic. An optional reset pin
(PR) forces the wiper to the mid-scale position by loading 80
the VR latch.
*The terms digital potentiometers, VR, and RDAC are used interchangeably.
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. No license is granted by implication or otherwise
under any patent or patent rights of Analog Devices.
REV. 0
FEATURES
256 Positions
AD5260 – 1-Channel
AD5262 – 2-Channel (Independently Programmable)
Potentiometer Replacement
Low Temperature Coefficient 35 ppm/ C
4-Wire SPI-Compatible Serial Data Input
5 V to 15 V Single-Supply;
Power ON Mid-Scale Preset
APPLICATIONS
Mechanical Potentiometer Replacement
Instrumentation: Gain, Offset Adjustment
Stereo Channel Audio Level Control
Programmable Voltage to Current Conversion
Programmable Filters, Delays, Time Constants
Line Impedance Matching
Low Resolution DAC Replacement
20 k , 50 k , 200 k
5.5 V Dual-Supply Operation
H
into
The AD5260/AD5262 are available in thin surface-mount TSSOP-14
and TSSOP-16 packages. All parts are guaranteed to operate over
the extended industrial temperature range of –40∞C to +85∞C.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781/329-4700
Fax: 781/326-8703
SHDN
SHDN
GND
CLK
GND
CLK
V
V
SDI
V
V
SDI
CS
15 V Digital Potentiometers
CS
DD
SS
V
DD
SS
V
100
L
75
50
25
L
0
0
FUNCTIONAL BLOCK DIAGRAMS
LOGIC
Figure 1. R
LOGIC
R
RDAC1 REGISTER
WA
A1
A
REGISTER
RDAC
64
W1 B1
W
SERIAL INPUT REGISTER
SERIAL INPUT REGISTER
B
WA
AD5260/AD5262
CODE – Decimal
AD5262
and R
128
8
WB
1-/2-Channel
RDAC2 REGISTER
© Analog Devices, Inc., 2002
AD5260
A2 W2 B2
vs. Code
8
POWER-ON
POWER-ON
RESET
RESET
192
www.analog.com
R
WB
PR
SDO
PR
SDO
256

Related parts for AD5260BRU200-REEL7

AD5260BRU200-REEL7 Summary of contents

Page 1

FEATURES 256 Positions AD5260 – 1-Channel AD5262 – 2-Channel (Independently Programmable) Potentiometer Replacement 200 k Low Temperature Coefficient 35 ppm/ C 4-Wire SPI-Compatible Serial Data Input Single-Supply; 5.5 ...

Page 2

AD5260/AD5262–SPECIFICATIONS ELECTRICAL CHARACTERISTICS 20 kW, 50 kW, 200 kW VERSIONS Parameter DC CHARACTERISTICS RHEOSTAT MODE Specifications apply to all VRs 2 Resistor Differential NL 2 Resistor Nonlinearity 3 Nominal Resistor Tolerance Resistance Temperature Coefficient Wiper Resistance Channel Resistance Matching (AD5262 ...

Page 3

Parameter INTERFACE TIMING CHARACTERISTICS apply to all parts Clock Frequency Input Clock Pulsewidth Data Setup Time Data Hold Time 13 CLK to SDO Propagation Delay CS Setup Time CS High Pulsewidth Reset Pulsewidth CLK Fall to CS Rise Hold Time ...

Page 4

... AD5260/AD5262 Model R (kW) AB AD5260BRU20 20 AD5260BRU20-REEL7 20 AD5260BRU50 50 AD5260BRU50-REEL7 50 AD5260BRU200 200 AD5260BRU200-REEL7 200 AD5262BRU20 20 AD5262BRU20-REEL7 20 AD5262BRU50 50 AD5262BRU50-REEL7 50 AD5262BRU200 200 AD5262BRU200-REEL7 200 * Line 1 contains part number, line 2 contains differentiating detail by part type and ADI logo symbol, line 3 contains date code YWW. CAUTION ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily accumulate on the human body and test equipment and can discharge without detection ...

Page 5

Table I. AD5260 8-Bit Serial-Data Word Format DATA MSB SDI CLK 0 1 RDAC REGISTER LOAD CS 0 ...

Page 6

AD5260/AD5262 AD5260 PIN CONFIGURATION AD5260 TOP VIEW SHDN 5 10 (Not to Scale) CLK 9 6 SDI 8 7 AD5260 PIN FUNCTION DESCRIPTIONS Pin Number Mnemonic Description ...

Page 7

THEORY OF OPERATION The AD5260/AD5262 provide a single- or dual-channel, 256-position digitally controlled variable resistor (VR) device and operate maximum voltage. Changing the programmed VR settings is accomplished by clocking an 8-/9-bit serial data word into ...

Page 8

AD5260/AD5262 All digital inputs are protected with a series input resistor and parallel Zener ESD structure as shown in Figure 6. This applies to digital input pins CS, SDI, SDO, PR, SHDN, and CLK. 340 LOGIC Figure 6. ESD Protection ...

Page 9

SHDN RDAC LATCH AND DECODE R S DIGITAL CIRCUITRY OMITTED FOR CLARITY Figure 11. Simplified RDAC Architecture PROGRAMMING THE VARIABLE RESISTOR Rheostat ...

Page 10

AD5260/AD5262 —Typical Performance Characteristics 0.8 0.7 5V 0.6 0.5 0.4 0.3 12V 0.2 5V 0.1 0 –0.1 15V –0 128 160 192 224 256 CODE – Decimal TPC 1. R-INL vs. Code vs. Supply Voltages 0.5 ...

Page 11

+15V/ –1 –1.5 –2 +5V/ –2.5 –40 – 100 TEMPERATURE – C TPC 10. Full-Scale Error 28.0 ...

Page 12

AD5260/AD5262 CODE = – – – – – – – –48 –54 1k 10k 100k ...

Page 13

OPEN 20k 50k AB 0 200k AB 0. 128 160 192 224 256 CODE – ...

Page 14

AD5260/AD5262 TEST CIRCUITS (continued) V LOGIC I LOGIC CS CLK SDI DIGITAL INPUT VOLTAGE Test Circuit 8. V Current vs. Digital Input Voltage LOGIC DUT V B GND SS NC Test Circuit 9. ...

Page 15

AD5260 OUT W GND AD8601 B 2 AD1582 A1 Figure 15. Programmable Voltage Reference 8-Bit Bipolar DAC Figure 16 shows a low cost 8-bit bipolar DAC. It offers the same number ...

Page 16

AD5260/AD5262 that can deliver 2.048 V. The load current is simply the voltage across terminals B-to-W of the digital pot divided by R ¥ REF ...

Page 17

and V are interdependent variables. With proper selection R2B, an equilibrium will be reached such that V can be in series with a discrete resistor to increase the amplitude, but the total ...

Page 18

AD5260/AD5262 DIGITAL POTENTIOMETER FAMILY SELECTION GUIDE Number Terminal Interface Part of VRs per Voltage Data Number Package Range (V) Control ± 3, 5.5 AD5201 1 3-Wire AD5220 1 5.5 UP/DOWN ± 15, 28 AD7376 1 3-Wire ± 3, 5.5 AD5200 ...

Page 19

SEATING SEATING REV. 0 OUTLINE DIMENSIONS Dimensions shown in inches and (mm). 14-Lead TSSOP (RU-14) 0.201 (5.10) 0.193 (4.90 0.177 (4.50) 0.169 (4.30) 0.256 (6.50) 0.246 (6.25 PIN 1 0.006 (0.15) 0.0433 (1.10) MAX 0.002 (0.05) ...

Page 20

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