参数资料
型号: AD7376ARWZ100
厂商: Analog Devices Inc
文件页数: 8/20页
文件大小: 0K
描述: IC DIGITAL POT 100K 16-SOIC
标准包装: 47
接片: 128
电阻(欧姆): 100k
电路数: 1
温度系数: 标准值 300 ppm/°C
存储器类型: 易失
接口: 4 线 SPI(芯片选择)
电源电压: 4.5 V ~ 33 V,±4.5 V ~ 16.5 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 16-SOIC(0.295",7.50mm 宽)
供应商设备封装: 16-SOIC W
包装: 管件
产品目录页面: 787 (CN2011-ZH PDF)
配用: EVAL-AD7376EBZ-ND - BOARD EVAL FOR AD7376
AD7376
Rev. D | Page 16 of 20
APPLICATIONS INFORMATION
HIGH VOLTAGE DAC
The AD7376 can be configured as a high voltage DAC as high
as 30 V. The circuit is shown in Figure 32. The output is
1
2
1
V
2
.
1
128
)
(
R
D
V
O
(5)
Where D is the decimal code from 0 to 127.
AD7376
U2
AD8512
V+
V–
AD8512
VOUT
VDD
U1B
VDD
RBIAS
ADR512
D1
R2
R1
B
100k
0
11
1
9
-0
3
2
U1A
Figure 32. High Voltage DAC
PROGRAMMABLE POWER SUPPLY
With a boost regulator such as ADP1611, AD7376 can be used
as the variable resistor at the regulator’s FB pin to provide the
programmable power supply (see Figure 33). The output is
2
128
1
V
23
.
1
R
D
V
AB
O
(6)
Note that the AD7376’s VDD is derived from the output. Initially
L1 acts as a short, and VDD is one diode voltage drop below +5 V.
The output slowly establishes to the final value.
The AD7376 shutdown sleep-mode programming can be used
to program a desirable preset level at power-up.
AD7376
ADP1611
1.23V
CC
150pF
RC
220k
COUT
10F
VOUT
D1
L1
4.7F
IN
GND
SS
FB
RT
SW
COMP
U2
C1
0.1F
VDD
R1
100k
A
W
B
CIN
10F
5V
R2
8.5k
CSS
22nF
0
1
9-
03
3
U1
SD
Figure 33. Programmable Power Supply
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