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參數(shù)資料
| 型號： | CAT523 |
| 元件分類： | 數(shù)字電位計 |
| 英文描述： | Configured Digitally Programmable Potentiometer (DPP): Programmable Voltage Applications |
| 中文描述： | 配置數(shù)字可編程電位（民進黨）：可編程電壓應(yīng)用 |
| 文件頁數(shù)： | 7/10頁 |
| 文件大?。?/td> | 70K |
| 代理商： | CAT523 |
CAT523
7
Advance Information
CAT523
GND
VDD
REF
REF
CONTROL
& DATA
+
–
OP 07
OUT
RF
R +
-15V
+15V
+5V
R
R
i
F
Ri
i
RF
VDAC
For Ri
OUT
RF
i
DAC
Vi
VOUT
APPLICATION CIRCUITS
this value is the same as that which had been there
previously no change in the DAC
’
s output is noticed.
Had the value held in the control register been different
from that stored in EEPROM then
a change would
occur
at the read cycle
’
s conclusion.
TEMPORARILY CHANGE OUTPUT
The CAT523 allows temporary changes in DAC
’
s output
to be made without disturbing the settings retained in
EEPROM memory. This feature is particularly useful
when testing for a new output setting and allows for user
adjustment of preset or default values without losing the
original factory settings.
Figure 3 shows the control and data signals needed to
effect a temporary output change. DAC settings may be
changed as many times as required and can be made to
any of the four DACs in any order or sequence. The
temporary setting(s) remain in effect long as CS remains
high. When CS returns low all four DACs will return to the
output values stored in EEPROM memory.
When it is desired to save a new setting acquired using
Figure 3. Temporary Change in Output
this feature, the new value must be reloaded into the
DAC control register prior to programming. This is be-
cause the CAT523
’
s internal control circuitry discards
the new data from the programming register two clock
cycles after receiving it (after reception is complete) if no
PROG signal is received.
D0
D1
D2
D3
D4
D5
D6
D7
A0
A1
D0
D1
D2
D3
D4
D5
D6
D7
1
NEW DAC DATA
CURRENT DAC DATA
DO
DI
CS
PROG
OUTDAC
to
CURRENT
NON-VOLATILE
DANEW
VOLATILE
CURRENT
NON-VOLATILE
Bipolar DAC Output
MSB LSB
1111 1111 255
1000 0000 128
REF
REF
0111 1111 255
0000 0001 255
0000 0000 0
REF
REF
F
VREF
RI
OUT
DAC INPUT DAC OUTPUT ANALOG
OUTPUT
REF
REF
OUT
REF
REF
OUT
REF
REF
OUT
REF
REF
OUT
VFS
VZERO
REF
REF
DAC
255
CODE
FS
ZERO
ZERO
Amplified DAC Output
OPT 504
GND
VDD
REF
REF
CONTROL
& DATA
+
–
OP 07
VOUT
-15V
+15V
+5V
R
R
i
F
OUT RI
–––
) V
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相關(guān)代理商/技術(shù)參數(shù) |
參數(shù)描述 |
|---|---|
| CAT523J | 功能描述:數(shù)字電位計 IC COM TEMP 7K 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 |
| CAT523JI | 功能描述:數(shù)字電位計 IC IND TEMP 7K 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 |
| CAT523L | 功能描述:數(shù)字電位計 IC Com Temp 7K 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 |
| CAT523LI | 功能描述:數(shù)字電位計 IC Ind Temp 7K 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 |
| CAT523P | 功能描述:數(shù)字電位計 IC Com Temp 7K 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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