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| 型号： | MAX5419PETA+T |
| 厂商： | Maxim Integrated Products |
| 文件页数： | 13/14页 |
| 文件大小： | 0K |
| 描述： | IC POT DGTL 256-TAP I2C 8-TDFN |
| 产品培训模块： | Lead (SnPb) Finish for COTS Obsolescence Mitigation Program |
| 标准包装： | 2,500 |
| 接片： | 256 |
| 电阻（欧姆）： | 200k |
| 电路数： | 1 |
| 温度系数： | 标准值 35 ppm/°C |
| 存储器类型： | 非易失 |
| 接口： | I²C（设备位址） |
| 电源电压： | 2.7 V ~ 5.25 V |
| 工作温度： | -40°C ~ 85°C |
| 安装类型： | 表面贴装 |
| 封装/外壳： | 8-WDFN 裸露焊盘 |
| 供应商设备封装： | 8-TDFN-EP（3x3） |
| 包装： | 带卷 (TR) |
MAX5417/MAX5418/MAX5419
256-Tap, Nonvolatile, I2C-Interface,
Digital Potentiometers
8
_______________________________________________________________________________________
Pin Description
PIN
NAME
FUNCTION
1VDD
Power-Supply Input. 2.7V to 5.25V voltage range. Bypass with a 0.1F capacitor from VDD to GND.
2
SCL
I
2C-Interface Clock Input
3
SDA
I
2C-Interface Data Input
4A0
Address Input. Sets the A0 bit in the device ID address.
5
GND
Ground
6
L
Low Terminal
7
W
Wiper Terminal
8
H
High Terminal
—EP
Exposed Pad. Internally connected to GND. Connect to a large ground plane to maximize thermal
performance. Not intended as an electrical point.
tHD-STA
tSU-DAT
tHIGH
tR
tF
tHD-DAT
tHD-STA
S
Sr
A
tSU-STA
tLOW
tBUF
tSU-STO
PS
tR
tF
SCL
SDA
PARAMETERS ARE MEASURED FROM 30% TO 70%.
Detailed Description
The MAX5417/MAX5418/MAX5419 contain a resistor
array with 255 resistive elements. The MAX5417 has a
total end-to-end resistance of 50k
, the MAX5418 has
an end-to-end resistance of 100k
, and the MAX5419
has an end-to-end resistance of 200k
. The
MAX5417/MAX5418/MAX5419 allow access to the high,
low, and wiper terminals for a standard voltage-divider
configuration. H, L, and W can be connected in any
desired configuration as long as their voltages fall
between GND and VDD.
A simple 2-wire I2C-compatible serial interface moves
the wiper among the 256 tap points. A nonvolatile mem-
ory stores the wiper position and recalls the stored wiper
position in the nonvolatile memory upon power-up. The
nonvolatile memory is guaranteed for 50 years for wiper
data retention and up to 200,000 wiper store cycles.
Figure 1. I2C Serial-Interface Timing Diagram
VDD
IOL = 3mA
IOH = 0mA
VOUT
400pF
SDA
Figure 2. Load Circuit
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