參數資料
型號： CAT525P
英文描述： 1-Mbit (64K x 16) Static RAM
中文描述： 數字電位器
文件頁數： 1/12頁
文件大?。?/td> 85K
代理商： CAT525P
1
SERIAL
DATA
OUTPUT
REGISTER
V L1
REF
V H1
REF
V 1
OUT
18
16
15
8
17
OUT
V 3
OUT
V 4
OUT
V 2
DO
+
–
+
–
+
–
+
–
PROG
RDY/
BSY
PROGRAM
CONTROL
CH.V.
PUMP
DATA
5
CLK
CS
4
6
7
9
V H2
REF
V H3
REF
V H4
REF
1
2
20
19
11
12
13
14
V L2
REF
V L3
REF
V L4
REF
NAND
28k
(ea)
WIPER
CONTROL
REGISTERS
DI
GND
CLK
CS
DI
DO
VDD
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
VREFL4
VREFL3
VOUT1
VOUT2
VOUT3
VOUT4
GND
CLK
CS
DI
DO
VDD
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
VREFL4
VREFL3
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 Microwire-like interface
I
Single supply operation: 2.7V-5.5V
I
Setting read-back without effecting outputs
DESCRIPTION
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
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 machines
and cellular telephones on automated high volume
production lines and systems capable of self calibration,
it is also well suited for applications were equipment
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 reinstated
when power is returned. Each wiper can be dithered to
FUNCTIONAL DIAGRAM
PIN CONFIGURATION
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
Microwire-like 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. 2001, Rev. A
CAT525
相關PDF資料
PDF描述
CAT521JI-TE13 1-Mbit (64K x 16) Static RAM
CAT521J-TE13 1-Mbit (64K x 16) Static RAM
CAT521P 1-Mbit (64K x 16) Static RAM
CAT521PI 1-Mbit (64K x 16) Static RAM
CAT523JI-TE13 1-Mbit (64K x 16) Static RAM
相關代理商/技術參數
參數描述
CAT525PI 功能描述:數字電位計 IC Ind Temp 28K 3-Wire RoHS:否 制造商:Maxim Integrated 電阻:200 Ohms 溫度系數:35 PPM / C 容差:25 % POT 數量:Dual 每 POT 分接頭:256 弧刷存儲器:Volatile 緩沖刷: 數字接口: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 安裝風格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel
CAT5-25PR-DB 制造商:Structured Cable 功能描述:1000Ft 25-Pair Burial Cat5EGel-FilLED, 24Awg, Blk, Spool 制造商:STRUCTURED CABLE 功能描述:1000FT 25-PAIR BURIAL CAT5E GEL-FILLED, 24AWG, BLK, SPOOL
CAT525W 功能描述:數字電位計 IC Com Temp 28K 3-Wire RoHS:否 制造商:Maxim Integrated 電阻:200 Ohms 溫度系數:35 PPM / C 容差:25 % POT 數量:Dual 每 POT 分接頭:256 弧刷存儲器:Volatile 緩沖刷: 數字接口: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 安裝風格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel
CAT525WI 功能描述:數字電位計 IC Ind Temp 28K 3-Wire RoHS:否 制造商:Maxim Integrated 電阻:200 Ohms 溫度系數:35 PPM / C 容差:25 % POT 數量:Dual 每 POT 分接頭:256 弧刷存儲器:Volatile 緩沖刷: 數字接口: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 安裝風格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel
CAT525WI-T1 功能描述:數字電位計 IC DPP,NV,256 taps Quad 3 wire,w/Buf RoHS:否 制造商:Maxim Integrated 電阻:200 Ohms 溫度系數:35 PPM / C 容差:25 % POT 數量:Dual 每 POT 分接頭:256 弧刷存儲器:Volatile 緩沖刷: 數字接口: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 安裝風格:SMD/SMT 封裝 / 箱體:TQFN-16 封裝:Reel
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