参数资料
型号: DS1881Z-050+T&R
厂商: Maxim Integrated Products
文件页数: 11/16页
文件大小: 0K
描述: IC DGTL POT NV 2CH 45K 16-SOIC
产品培训模块: Lead (SnPb) Finish for COTS
Obsolescence Mitigation Program
标准包装: 1,000
接片: 64
电阻(欧姆): 45k
电路数: 2
温度系数: 标准值 750 ppm/°C
存储器类型: 非易失
接口: I²C(设备位址)
电源电压: 2.7 V ~ 5.5 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 16-SOIC(0.154",3.90mm 宽)
供应商设备封装: 16-SOIC
包装: 带卷 (TR)
DS1881
Dual NV Audio Taper Digital Potentiometer
4
_____________________________________________________________________
NV MEMORY CHARACTERISTICS
(VDD = +2.7V to +5.5V, VCC = +4.5V to +5.5V, TA = 0°C to +70°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Writes
+70°C (Note 6)
50,000
Note 1:
All voltages are referenced to ground.
Note 2:
The value of VDD should never exceed VCC, including during power-ups. VCC must be applied before VDD.
Note 3:
IDD is specified with SDA = SCL = CE = VDD, resistor pins floating, and digital inputs connected to VDD or GND.
Note 4:
ICC is specified with SDA = SCL = CE = VDD, resistor pins floating, and digital inputs connected to VDD or GND, after zero-
crossing detection has timed out.
Note 5:
The DS1881 will not obstruct the SDA and SCL lines if VDD is switched off as long as the voltages applied to these inputs
do not violate their minimum and maximum input voltage levels.
Note 6:
Guaranteed by design.
Note 7:
Above Position 50, these are typical maximum. Guaranteed by characterization.
Note 8:
Load is representative of the input of a low-noise audio amp.
Note 9:
Timing shown is for fast-mode (400kHz) operation. This device is also backward-compatible with I2C standard-mode timing.
Note 10: CB—Total capacitance of one bus line in picofarads.
Note 11: If zero-crossing detection is enabled, the EEPROM write does not begin until the current zero-crossing detection is com-
plete. Otherwise, EEPROM write begins after a STOP condition occurs.
IDD vs. VDD
DS1881
toc01
VOLTAGE (V)
SUPPLY
CURRENT
(
A)
5.3
5.1
4.7
4.9
120
140
160
180
200
220
240
260
280
300
100
4.5
5.5
SDA = SCL = VCC
IDD vs. TEMPERATURE
DS1881
toc02
TEMPERATURE (
°C)
SUPPLY
CURRENT
(
A)
80
60
-20
0
20
40
50
100
150
200
250
300
350
400
0
-40
SDA = SCL = VDD
IDD vs. SCL FREQUENCY
DS1881
toc03
SCL FREQUENCY (kHz)
ACTIVE
SUPPLY
CURRENT
(
A)
400
300 350
250
50
100 150 200
50
100
150
200
250
300
350
400
0
SDA = VDD
Typical Operating Characteristics
(VDD = VCC = +5.0V, TA = +25°C.)
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