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參數(shù)資料
| 型號： | CAT5133ZI-10-GT3 |
| 廠商： | ON Semiconductor |
| 文件頁數(shù)： | 3/8頁 |
| 文件大?。?/td> | 0K |
| 描述： | IC POT DIG 10K 128TAP 16V 10MSOP |
| 標準包裝： | 3,000 |
| 系列： | DPP |
| 接片： | 128 |
| 電阻（歐姆）： | 10k |
| 電路數(shù)： | 1 |
| 溫度系數(shù)： | 標準值 300 ppm/°C |
| 存儲器類型： | 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） |
| 供應商設備封裝： | 10-MSOP |
| 包裝： | 帶卷 (TR) |
| 其它名稱： | 5133ZI-10-GT3 |
CAT5133
http://onsemi.com
3
Table 2. OPERATION MODES
INC
CS
U/D
Operation
High to Low
Low
High
Wiper toward H
High to Low
Low
Wiper toward L
High
Low to High
X
Store Wiper
Position
Low
Low to High
X
No Store, Return
to Standby
X
High
X
Standby
Figure 2. Potentiometer Equivalent Circuit
RW
CW
RW
RL
CL
CH
RH
Power-On and Potentiometer Characteristics
The CAT5133 is a 128-position, digital controlled
potentiometer. When applying power to the CAT5133, VCC
must be supplied prior to or simultaneously with V+. At the
same time, the signals on RH, RW and RL terminals should
not exceed V+. If V+ is applied before VCC, the electronic
switches of the digital potentiometer are powered in the
absence of the switch control signals, that could result in
multiple switches being turned on. This causes unexpected
wiper settings and possible current overload of the
potentiometer.
When VCC is applied, the device turns on at the mid-point
wiper location (64) until the wiper register can be loaded
with the nonvolatile memory location previously stored in
the device. After the nonvolatile memory data is loaded into
the wiper register the wiper location will change to the
previously stored wiper position.
At power-down, it is recommended to turn-off first the
signals on RH, RW and RL, followed by V+ and, after that,
VCC, in order to avoid unexpected transitions of the wiper
and uncontrolled current overload of the potentiometer.
The end-to-end nominal resistance of the potentiometer
has 128 contact points linearly distributed across the total
resistor. Each of these contact points is addressed by the 7 bit
wiper register which is decoded to select one of these 128
contact points.
Each contact point generates a linear resistive value
between the 0 position and the 127 position. These values
can be determined by dividing the end-to-end value of the
potentiometer by 127. The 10 k
W potentiometer has a
resistance of ~79
W between each wiper position. However
in addition to the ~79
W for each resistive segment of the
potentiometer, a wiper resistance offset must be considered.
Table 3 shows the effect of this value and how it would
appear on the wiper terminal.
This offset will appear in each of the CAT5133 end-to-end
resistance values in the same way as the 10 k
W example.
However resistance between each wiper position for the
50 k
W version will be ~395 W and for the 100 kW version
will be ~790
W.
Table 3. POTENTIOMETER RESISTANCE AND WIPER RESISTANCE OFFSET EFFECTS
Position
Typical RW to RL Resistance for 10 kW
Digital Potentiometer
Position
Typical RW to RH Resistance for 10 kW
Digital Potentiometer
0
70 W or
0 W + 70 W
00
10,070 W or
10,000 W + 70 W
01
149 W or
79 W + 70 W
64
5,047 W or
4,977 W + 70 W
63
5,047 W or
4,977 W + 70 W
126
149 W or
79 W + 70 W
127
10,070 W or
10,000 W + 70 W
127
70 W or
0 W + 70 W
Table 4. ABSOLUTE MAXIMUM RATINGS
Parameters
Ratings
Units
Temperature Under Bias
55 to +125
C
Storage Temperature
65 to +150
C
0.3 to +VCC + 0.3
V
Voltage on RH, RL, & RW Pins with Respect to VCC
V+
V
VCC with Respect to Ground
0.3 to +6.0
V
V+ with respect to Ground
0.3 to +16.5
V
Wiper Current
6
mA
Lead Soldering temperature (10 seconds)
+300
C
Stresses exceeding Maximum Ratings may damage the device. Maximum Ratings are stress ratings only. Functional operation above the
Recommended Operating Conditions is not implied. Extended exposure to stresses above the Recommended Operating Conditions may affect
device reliability.
5. Latch-up protection is provided for stresses up to 100 mA on the digital from 0.3 V to VCC + 0.3 V.
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