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參數(shù)資料
| 型號(hào)： | CAT5133ZI-10-GT3 |
| 廠商： | ON Semiconductor |
| 文件頁(yè)數(shù)： | 2/8頁(yè) |
| 文件大小： | 0K |
| 描述： | IC POT DIG 10K 128TAP 16V 10MSOP |
| 標(biāo)準(zhǔn)包裝： | 3,000 |
| 系列： | DPP |
| 接片： | 128 |
| 電阻（歐姆）： | 10k |
| 電路數(shù)： | 1 |
| 溫度系數(shù)： | 標(biāo)準(zhǔn)值 300 ppm/°C |
| 存儲(chǔ)器類型： | 非易失 |
| 接口： | 3 線串行（芯片選擇，遞增，增/減） |
| 電源電壓： | 2.7 V ~ 5.5 V |
| 工作溫度： | -40°C ~ 85°C |
| 安裝類型： | 表面貼裝 |
| 封裝/外殼： | 10-TFSOP，10-MSOP（0.118"，3.00mm 寬） |
| 供應(yīng)商設(shè)備封裝： | 10-MSOP |
| 包裝： | 帶卷 (TR) |
| 其它名稱： | 5133ZI-10-GT3 |
CAT5133
http://onsemi.com
2
Figure 1. Block Diagram
RH
RL
RW
127
0
V+
127
Resistive
Elements
128 Tap Position
Decode Control
VCC
Control Logic and
Address Decode
7Bit Wiper
Control
Register
(WCR)
7Bit
Nonvolatile
Memory
Register
(DR)
UP/DOWN
(U/D)
Device Select
(CS)
Increment
(INC)
Table 1. PIN DESCRIPTIONS
Pin
Name
Function
1
U/D
Up/Down Data Input – Determines the direction of movement of the wiper
2
GND
Ground
3
VCC
Logic Supply Voltage (2.7 V to 5.5 V)
4
CS
Chip Select The chip is selected when the input is low.
5
N/C
No Connect
6
RH
High Reference Terminal for the Potentiometer
7
RW
Wiper Terminal for the Potentiometer
8
RL
Low Reference Terminal for the Potentiometer
9
V+
Analog Bias Voltage Input (+8.0 V to +16.0 V)
10
INC
Increment Input – Moves the wiper in the direction determined by the Up/Down input on each negative edge
Device Operation
The CAT5133 operates like a digitally controlled
potentiometer with RH and RL equivalent to the high and low
terminals and RW equivalent to the mechanical
potentiometer’s wiper. There are 128 available tap positions
including the resistor end points, RH and RL. There are 127
resistor elements connected in series between the RH and RL
terminals. The wiper terminal is connected to one of the 128
taps and controlled by three inputs, INC, U/D and CS. These
inputs control a 7-bit up/down counter whose output is
decoded to select the wiper position. The selected wiper
position can be stored in nonvolatile memory using the INC
and CS inputs.
With CS set LOW the CAT5133 is selected and will
respond to the U/D and INC inputs. HIGH to LOW
transitions on INC will increment or decrement the wiper
(depending on the state of the U/D input and 7-bit counter).
The wiper, when at either fixed terminal, acts like its
mechanical equivalent and does not move beyond the last
position. The value of the counter is stored in nonvolatile
memory whenever CS transitions HIGH while the INC input
is also HIGH. When the CAT5133 is powered-down; the last
stored wiper counter position is maintained in the
nonvolatile memory. When power is restored, the contents
of the memory are recalled and the counter is set to the value
stored.
With INC set low, the CAT5133 may be de-selected and
powered down without storing the current wiper position in
nonvolatile memory. This allows the system to always
power up to a preset value stored in nonvolatile memory.
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