參數(shù)資料
型號(hào)： CAT525J
英文描述： 1-Mbit (64K x 16) Static RAM
中文描述： 數(shù)字電位器
文件頁數(shù)： 1/12頁
文件大?。?/td> 82K
代理商： CAT525J
1
SERIAL
DATA
OUTPUT
REGISTER
REF
REF
OUT
18
16
15
8
17
OUT
OUT
OUT
DO
+
–
+
–
+
–
+
–
PROG
RDY/
BSY
PROGRAM
CONTROL
H.V.
CHARGE
PUMP
DATA
CONTROLLER
5
CLK
CS
4
6
7
9
REF
REF
REF
7K
(ea)
1
2
20
19
11
12
13
14
VREF
REF
VREF
NVRAM
GND
CLK
CS
DI
DO
DVD
PROG
RDY/BSY
VREF H1
1
2
3
4
5
6
7
10
9
8
20
19
18
17
14
13
12
11
16
15
VREF H2
VREF H4
VREF H3
VREF L1
VREF L2
VREF L4
VREF L3
VOUT1
VOUT2
VOUT3
VOUT4
GND
CLK
CS
DI
DO
DVD
PROG
RDY/BSY
VREF H1
1
2
3
4
5
6
7
10
9
8
20
19
18
17
14
13
12
11
16
15
VREF H2
VREF H4
VREF H3
VREF L1
VREF L2
VREF L4
VREF L3
VOUT1
VOUT2
VOUT3
VOUT4
CAT525
Configured Digitally Programmable Potentiometer (DPP): Programmable Voltage Applications
FEATURES
I
Four 8-bit DPPs configured as programmable
voltage sources in DAC-like applications
I
Independent reference inputs
I
Buffered wiper outputs
I
Non-volatile NVRAM memory wiper storage
I
Output voltage range includes both supply rails
I
4 independently addressable buffered
output wipers
I
1 LSB accuracy, high resolution
I
Serial
μ
P interface
I
Single supply operation: 2.7V-5.5V
I
Setting read-back without effecting outputs
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
I
DAC (with memory) substitute
DESCRIPTION
The CAT525 is a quad 8-Bit digitally programmable
potentiometer (DPP) configured for programmable
voltage and DAC-like applications. Intended for final
calibration of products such as camcorders, fax ma-
chines and cellular telephones on automated high vol-
ume production lines and systems capable of self cali-
bration, it is also well suited for applications were equip-
ment requiring periodic adjustment is either difficult to
access or located in a hazardous environment.
The CAT525 offers four independently programmable
DPPs each having its own reference inputs and each
capable of rail to rail output swing. The wipers are
buffered by rail to rail op amps. Wiper settings, stored in
non-volatile NVRAM memory, are not lost when the
device is powered down and are automatically rein-
PIN CONFIGURATION
stated when power is returned. Each wiper can be
dithered to test new output values without effecting the
stored settings and stored settings can be read back
without disturbing the DPP’s output.
Control of the CAT525 is accomplished with a simple 3
wire serial interface. A Chip Select pin allows several
CAT525's to share a common serial interface and
communications back to the host controller is via a single
serial data line thanks to the CAT525’s Tri-Stated Data
Output pin. A RDY/
BSY
output working in concert with
an internal low voltage detector signals proper operation
of non-volatile NVRAM Memory Erase/Write cycle.
The CAT525 is available in the 0
°
C to 70
°
C commercial
and –40
°
C to 85
°
C industrial operating temperature
ranges and offered in 20-pin plastic DIP and Surface
mount packages.
DIP Package (P)
SOIC Package (J)
2001 by Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
CAT525
CAT525
Doc. No. 25078-00 4/01-A M-1
FUNCTIONAL DIAGRAM
CAT525
相關(guān)PDF資料
PDF描述
CAT525 Configured Digitally Programmable Potentiometer (DPP⑩): Programmable Voltage Applications
CAT525JI 1-Mbit (64K x 16) Static RAM
CAT525P 1-Mbit (64K x 16) Static RAM
CAT521JI-TE13 1-Mbit (64K x 16) Static RAM
CAT521J-TE13 1-Mbit (64K x 16) Static RAM
相關(guān)代理商/技術(shù)參數(shù)
參數(shù)描述
CAT525JI 功能描述:數(shù)字電位計(jì) IC Ind Temp 28K 3-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
CAT525L 功能描述:數(shù)字電位計(jì) IC Com Temp 28K 3-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
CAT525LI 功能描述:數(shù)字電位計(jì) IC Ind Temp 28K 3-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
CAT525P 功能描述:數(shù)字電位計(jì) IC Com Temp 28K 3-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
CAT525PI 功能描述:數(shù)字電位計(jì) IC Ind Temp 28K 3-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
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