参数资料
型号: DS3908N+T&R
厂商: Maxim Integrated Products
文件页数: 1/11页
文件大小: 0K
描述: IC POT DUAL DIGITAL 14-TDFN
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 2,500
接片: 64
电阻(欧姆): 100k
电路数: 2
温度系数: 标准值 50 ppm/°C
存储器类型: 非易失
接口: I²C(设备位址)
电源电压: 3 V ~ 5.5 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 14-WFDFN 裸露焊盘
供应商设备封装: 14-TDFN-EP(3x3)
包装: 带卷 (TR)
General Description
The DS3908 contains two nonvolatile digital poten-
tiometers with programmable-gain amplifiers buffering
the wiper outputs. The potentiometer position and
amplifier gain are controlled through an I2C-compatible
serial bus. The DS3908 operates in both 3.3V and 5V
systems and features a write-protect pin that locks the
position of the potentiometers and gain registers. Up to
eight DS3908s can be placed on a single I2C bus.
Applications
Pin-Diode Biasing
Power-Supply Calibration
Cell Phones and PDAs
Portable Electronics
Features
Two 64-Position Linear Taper Potentiometers
Integral Wiper Buffering Amplifiers with
Selectable Gains of 1V/V, 2V/V, or 4V/V
100kΩ Potentiometer End-to-End Resistance
Low Potentiometer Temperature Coefficient
Nonvolatile Wiper and Gain Storage
I2C-Compatible Interface
Write-Protect Pin Prevents Accidental Field
Reprogramming
3V to 5.5V Supply Voltage Range
-40°C to +85°C Operating Temperature Range
14-Pin TDFN Package
DS3908
Dual, 64-Position Nonvolatile Digital
Potentiometer with Buffered Outputs
______________________________________________ Maxim Integrated Products
1
TDFN (3mm x 3mm)
TOP VIEW
2
4
5
13
11
10
H1
L1
H0
SCL
A1
A2
1
+
14
VCC
SDA
3
12
V1
A0
6
9
V0
WP
7
8
L0
GND
DS3908
Pin Configuration
POT0
H0
V0
L0
H1
V1
L1
I2C
INTERFACE
SDA
SCL
A0
A1
A2
WP
VOLTAGE
REFERENCE
NV ADJUSTABLE
REFERENCE
VOLTAGE
NV ADJUSTABLE
REFERENCE
VOLTAGE
VCC
DS3908
PGA0
POT1
PGA1
Typical Operating Circuit
Rev 0; 4/06
For pricing, delivery, and ordering information, please contact Maxim/Dallas Direct! at
1-888-629-4642, or visit Maxim’s website at www.maxim-ic.com.
+Denotes lead-free package.
Ordering Information
PART
TEMP RANGE
PIN-PACKAGE
DS3908N+
-40°C to +85°C
14 TDFN
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