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參數(shù)資料
| 型號(hào)： | CAT511 |
| 英文描述： | 8-Bit Digital POT with Independent Reference Inputs |
| 中文描述： | 8位數(shù)字電位器與獨(dú)立的基準(zhǔn)輸入 |
| 文件頁數(shù)： | 1/9頁 |
| 文件大?。?/td> | 56K |
| 代理商： | CAT511 |
1
DO
PROG
RDY/BSY
CLK
1
2
3
4
5
6
7
14
13
12
11
8
10
9
VDD
VREF H1
GND
VOUT1
CS
DI
VREF L1
NC
NC
NC
DO
PROG
RDY/BSY
CLK
1
2
3
4
5
6
7
14
13
12
11
8
10
9
VDD
VREF H1
GND
VOUT1
CS
DI
VREF L1
NC
NC
NC
GND
EEPROM
LATCH
DAC 1
12
PROG
RDY/
BSY
PROGRAM
CONTROL
H.V.
CHARGE
PUMP
SERIAL DATA OUTPUT
V
V
REF
1
OUT
VREF
H1
DO
V
DD
DATA
CONTROLLER
14
3
CLK
CS
2
4
5
7
9
8
1
6
DI
CAT511
8-Bit Digital POT with Independent Reference Inputs
Advanced Information
FEATURES
I
Output settings retained without power
I
Output range includes both supply rails
I
Programming voltage generated on-chip
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 CAT511 is an 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 CAT511 consists of a programmable DAC with
independent high and low reference inputs and is ca-
pable of a rail to rail output swing. Output settings, stored
non-volatile EEPROM memory, are not lost when the
device is powered down and are automatically rein-
stated when power is returned. The output can be
dithered to test new output values without effecting the
stored setting and can be read back without disturbing
the DAC’s output.
FUNCTIONAL DIAGRAM
PIN CONFIGURATION
Control of the CAT511 is accomplished with a simple 3
wire serial interface. A Chip Select pin allows several
CAT511'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 CAT511’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 CAT511 operates from a single 3–5 volt power
supply. The high voltage required for EEPROM Erase/
Write operations is generated on-chip.
The CAT511 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)
CAT511
CAT511
CAT511
2001 by Catalyst Semiconductor, Inc.
Characteristics subject to change without notice
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