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參數資料
| 型號： | AD5204BRZ100-REEL |
| 廠商： | Analog Devices Inc |
| 文件頁數： | 1/20頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC DGTL POT QUAD 100K 24-SOIC |
| 產品變化通告： | Product Discontinuance 27/Oct/2011 |
| 標準包裝： | 1,000 |
| 接片： | 256 |
| 電阻（歐姆）： | 100k |
| 電路數： | 4 |
| 溫度系數： | 標準值 700 ppm/°C |
| 存儲器類型： | 易失 |
| 接口： | 4 線 SPI（芯片選擇） |
| 電源電壓： | 2.7 V ~ 5.5 V，±2.3 V ~ 2.7 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 24-SOIC（0.295"，7.50mm 寬） |
| 供應商設備封裝： | 24-SOIC W |
| 包裝： | 帶卷 (TR) |
4-/6-Channel
Digital Potentiometers
AD5204/AD5206
Rev. C
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityis assumedbyAnalogDevicesforitsuse,norforanyinfringements of patents or other
rightsofthirdpartiesthatmayresultfromitsuse.Specificationssubjecttochangewithoutnotice.No
license is granted by implication or otherwise under any patent or patent rights of Analog Devices.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A.
Tel: 781.329.4700
www.analog.com
Fax: 781.461.3113
1999–2010 Analog Devices, Inc. All rights reserved.
FEATURES
256 positions
Multiple independently programmable channels
AD5204—4-channel
AD5206—6-channel
Potentiometer replacement
Terminal resistance of 10 kΩ, 50 kΩ, 100 kΩ
3-wire SPI-compatible serial data input
+2.7 V to +5.5 V single-supply operation; ±2.7 V dual-supply
operation
Power-on midscale preset
APPLICATIONS
Mechanical potentiometer replacement
Instrumentation: gain, offset adjustment
Programmable voltage-to-current conversion
Programmable filters, delays, time constants
Line impedance matching
GENERAL DESCRIPTION
The AD5204/AD5206 provide 4-/6-channel, 256-position
digitally controlled variable resistor (VR) devices. These
devices perform the same electronic adjustment function as a
potentiometer or variable resistor. Each channel of the AD5204/
AD5206 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 endpoint 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 10 kΩ, 50 kΩ, or 100 kΩ has a nominal
temperature coefficient of 700 ppm/°C.
Each VR has its own VR latch that holds its programmed
resistance value. These VR latches are updated from an internal
serial-to-parallel shift register that is loaded from a standard
3-wire serial-input digital interface. Eleven data bits make up
the data-word clocked into the serial input register. The first
three bits are decoded to determine which VR latch is loaded
with the last eight bits of the data-word when the CS strobe is
returned to logic high. A serial data output pin at the opposite
end of the serial register (AD5204 only) allows simple daisy
chaining in multiple VR applications without requiring
additional external decoding logic.
FUNCTIONAL BLOCK DIAGRAMS
D7
D0
A1
W1
B1
VDD
AD5204
CS
CLK
8
EN
ADDR
DEC
A2
A1
A0
SDI
DI
SER
REG
D0
D7
A4
W4
B4
GND
RDAC
LATCH
1
R
D7
D0
RDAC
LATCH
4
R
POWER-ON
PRESET
VSS
SDO
DO
PR
SHDN
0
68
84
-00
1
Figure 1.
D7
D0
A1
W1
B1
VDD
AD5206
CS
CLK
8
EN
ADDR
DEC
A2
A1
A0
SDI
DI
SER
REG
D0
D7
A6
W6
B6
GND
R
D7
D0
RDAC
LATCH
6
RDAC
LATCH
1
R
VSS
POWER-ON
PRESET
06
88
4-
00
2
Figure 2.
An optional reset (PR) pin forces all the AD5204 wipers to the
midscale position by loading 0x80 into the VR latch.
The AD5204/AD5206 are available in the 24-lead surface-
mount SOIC, TSSOP, and PDIP packages. The AD5204 is also
available in a 32-lead, 5 mm × 5 mm LFCSP package. All parts are
guaranteed to operate over the extended industrial temperature
range of 40°C to +85°C. For additional single-, dual-, and quad-
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