參數(shù)資料
型號： CAT525JI
元件分類： 模擬信號調(diào)理
英文描述： SPECIALTY ANALOG CIRCUIT, PDSO20
封裝： SOIC-20
文件頁數(shù)： 1/12頁
文件大小： 97K
代理商： CAT525JI
1
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
VREFH2
VREFH4
VREFH3
VREFL1
VREFL2
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
VREFH2
VREFH4
VREFH3
VREFL1
VREFL2
VREFL4
VREFL3
VOUT1
VOUT2
VOUT3
VOUT4
SERIAL
DATA
OUTPUT
REGISTER
V
L1
REF
V
H1
REF
V
1
18
16
15
8
17
OUT
V
3
V
4
OUT
V
2
OUT
DO
+
–
+
–
+
–
+
–
PROG
RDY/
BSY
PROGRAM
CONTROL
H.V.
CHARGE
PUMP
DATA
CONTROLLER
5
CLK
CS
4
6
7
9
V
H2
REF
V
H3
REF
V
H4
REF
1
220
19
11
12
13
14
V
L2
REF
V
L3
REF
V
L4
REF
NVRAM
24k
(ea)
WIPER
CONTROL
REGISTERS
AND
DI
CAT525
Configured Digitally Programmable Potentiometer (DPP):
Programmable Voltage Applications
FEATURES
s Four 8-bit DPPs configured as programmable
voltage sources in DAC-like applications
s Independent reference inputs
s Buffered wiper outputs
s Non-volatile NVRAM memory wiper storage
s Output voltage range includes both supply rails
s 4 independently addressable buffered
output wipers
s 1 LSB accuracy, high resolution
s Serial Microwire-like interface
s Single supply operation: 2.7V - 5.5V
s Setting read-back without effecting outputs
APPLICATIONS
s Automated product calibration
s Remote control adjustment of equipment
s Offset, gain and zero adjustments in
self-calibrating and adaptive control systems
s Tamper-proof calibrations
s 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 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
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-
wire, 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, L)
SOIC Package (J, W)
2004 by Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
CAT525
Doc. No. 2001, Rev. E
FUNCTIONAL DIAGRAM
CAT525
HA
LOGEN FREE
TM
LEAD FREE
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相關代理商/技術參數(shù)
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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
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