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參數(shù)資料
| 型號(hào)： | CAT522 |
| 英文描述： | 8-Bit Dual Digital POT With Independent Reference Inputs |
| 中文描述： | 8位雙數(shù)字電位器，帶有獨(dú)立的參考輸入 |
| 文件頁(yè)數(shù)： | 1/10頁(yè) |
| 文件大?。?/td> | 70K |
| 代理商： | CAT522 |
1
GND
DAC 2
EEPROM
LATCH
EEPROM
LATCH
11
DAC 1
12
PROG
RDY/
BSY
PROGRAM
CONTROL
H.V.
CHARGE
PUMP
SERIAL DATA OUTPUT
V
OUT
REF
2
10
VREF
V
H2
V
V
REF
1
OUT
VREF
H1
DO
V
DD
DATA
CONTROLLER
13
14
3
CLK
CS
2
4
5
7
9
8
1
6
DI
+
–
+
–
DO
PROG
RDY/BSY
CLK
1
2
3
4
5
6
7
14
13
12
11
8
10
9
VDD
VREF H2
VREF H1
GND
VOUT1
VOUT2
VREF L2
CS
DI
VREF L1
DO
PROG
RDY/BSY
CLK
1
2
3
4
5
6
7
14
13
12
11
8
10
9
VDD
VREF H2
VREF H1
GND
VOUT1
VOUT2
VREF L2
CS
DI
VREF L1
CAT522
8-Bit Dual Digital POT With Independent Reference Inputs
FEATURES
I
Buffered Outputs
I
Output settings retained without power
I
Independent Reference Inputs
I
Output range includes both supply rails
I
Programming voltage generated on-chip
I
2 independently addressable outputs
I
Serial
μ
P interface
I
Single supply operation: 2.7V-5.5V
APPLICATIONS
I
Automated product calibration.
I
Remote control adjustment of equipment
I
Offset, gain and zero adjustments in Self-
Calibrating and Adaptive Control systems.
I
Tamper-proof calibrations.
DESCRIPTION
The CAT522 is a dual 8-Bit Memory DAC designed as an
electronic replacement for mechanical potentiometers
and trim pots. Intended for final calibration of products
such as camcorders, fax machines and cellular tele-
phones on automated high volume production lines and
systems capable of self calibration, it is also well suited
for applications were equipment requiring periodic ad-
justment is either difficult to access or located in a
hazardous environment.
The CAT522 offers 2 independently programmable DACs
each having its own reference inputs and each capable
of rail to rail output swing. Outputs are buffered by rail
to rail OP AMPS Output settings, stored in non-volatile
EEPROM memory, are not lost when the device is
powered down and are automatically reinstated when
power is returned. Each output can be dithered to test
new output values without effecting the stored settings
FUNCTIONAL DIAGRAM
PIN CONFIGURATION
and stored settings can be read back without disturbing
the DAC’s output.
Control of the CAT522 is accomplished with a simple 3
wire serial interface. A Chip Select pin allows several
CAT522's to share a common serial interface and com-
munications back to the host controller is via a single
serial data line thanks to the CAT522’s Tri-Stated Data
Output pin. A RDY/
BSY
output working in concert with
an internal low voltage detector signals proper operation
of EEPROM Erase/Write cycle.
The CAT522 operates from a single 3–5 volt power
supply. The high voltage required for EEPROM Erase/
Write operations is generated on-chip.
The CAT522 is available in the 0
°
C to 70
°
C Commercial
and –40
°
C to +85
°
C Industrial operating temperature
ranges and offered in 14-pin plastic DIP and Surface
mount packages.
DIP Package (P)
SOIC Package (J)
CAT522
2000 by Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
Advanced Information
CAT522
CAT522
相關(guān)PDF資料 |
PDF描述 |
|---|---|
| CAT523 | Configured Digitally Programmable Potentiometer (DPP): Programmable Voltage Applications |
| CAT59C11K | 512K x 32 Static RAM |
| CAT59C11KI | 512K x 32 Static RAM |
| CAT59C11KI-TE13 | 2M x 8 Static RAM |
| CAT59C11KI-TE7 | 2M x 8 Static RAM |
相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CAT5221WI00 | 制造商:ON Semiconductor 功能描述:DPP, NV, QUAD 64 TAPS, I2C - Rail/Tube |
| CAT5221WI-00 | 制造商:Rochester Electronics LLC 功能描述: 制造商:Catalyst Semiconductor 功能描述: |
| CAT5221WI-00-T1 | 功能描述:數(shù)字電位計(jì) IC DPP NV QUAD 64 TAPS I2C RoHS:否 制造商:Maxim Integrated 電阻:200 Ohms 溫度系數(shù):35 PPM / C 容差:25 % POT 數(shù)量:Dual 每 POT 分接頭:256 弧刷存儲(chǔ)器:Volatile 緩沖刷: 數(shù)字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作電源電壓:1.7 V to 5.5 V 電源電流:27 uA 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel |
| CAT5221WI10 | 功能描述:數(shù)字電位計(jì) IC Ind Temp 10K Up/Dwn Dual 64-Tap 2-Wire RoHS:否 制造商:Maxim Integrated 電阻:200 Ohms 溫度系數(shù):35 PPM / C 容差:25 % POT 數(shù)量:Dual 每 POT 分接頭:256 弧刷存儲(chǔ)器:Volatile 緩沖刷: 數(shù)字接口:Serial (3-Wire, SPI) 描述/功能:Dual Volatile Low Voltage Linear Taper Digital Potentiometer 工作電源電壓:1.7 V to 5.5 V 電源電流:27 uA 最大工作溫度:+ 125 C 安裝風(fēng)格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel |
| CAT5221WI-10 | 制造商:Catalyst Semiconductor 功能描述: |
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