參數(shù)資料
型號： AD5292BRUZ-100-RL7
廠商： Analog Devices Inc
文件頁數(shù)： 21/32頁
文件大小： 0K
描述： IC DGTL POT 1024POS 20K 14TSSOP
設(shè)計(jì)資源： Variable Gain Noninverting Amplifier Using AD5292 and OP184 (CN0112)
Variable Gain Inverting Amplifier Using AD5292 and OP184 (CN0113)
Low Cost, High Voltage, Programmable Gain Instrumentation Amplifier Using AD5292 and AD8221 (CN0114)
Programmable High Voltage Source with Boosted Output Current Using AD5292, OP184, and MOSFETs (CN0115)
Programmable Bidirectional Current Source Using AD5292 and ADA4091-4 (CN0117)
Logarithmic Audio Volume Control with Glitch Reduction Using AD5292 (CN0120)
標(biāo)準(zhǔn)包裝： 1,000
接片： 1024
電阻（歐姆）： 100k
電路數(shù)： 1
溫度系數(shù)： 標(biāo)準(zhǔn)值 35 ppm/°C
存儲器類型： 非易失
接口： 4 線串行
電源電壓： 9 V ~ 33 V，±9 V ~ 16.5 V
工作溫度： -40°C ~ 105°C
安裝類型： 表面貼裝
封裝/外殼： 14-TSSOP（0.173"，4.40mm 寬）
供應(yīng)商設(shè)備封裝： 14-TSSOP
包裝： 帶卷 (TR)
AD5291/AD5292
Rev. D | Page 28 of 32
APPLICATIONS INFORMATION
HIGH VOLTAGE DAC
The AD5292 can be configured as a high voltage DAC, with
output voltage as high as 33 V. The circuit is shown in Figure 70.
The output is
+
×
=
1
2
1
V
2
.
1
1024
)
(
R
D
V
OUT
(7)
where D is the decimal code from 0 to 1023.
07
67
4-
1
53
AD5292
U2
AD8512
V+
V–
AD8512
VOUT
VDD
U1B
VDD
RBIAS
ADR512
D1
R2
R1
B
20k
U1A
Figure 70. High Voltage DAC
PROGRAMMABLE VOLTAGE SOURCE WITH
BOOSTED OUTPUT
For applications that require high current adjustments such as a
laser diode or tunable laser, a boosted voltage source can be
considered; see Figure 71.
07
67
4-
15
5
W
SIGNAL
CC
RBIAS
LD
VIN
A
B
VOUT
U1
AD5292
U3 2N7002
U2
IL
OP184
Figure 71. Programmable Boosted Voltage Source
In this circuit, the inverting input of the op amp forces VOUT to
be equal to the wiper voltage set by the digital potentiometer.
The load current is then delivered by the supply via the N-channel
FET (U3). The N-Channel FET power handling must be adequate
to dissipate (VIN VOUT) × IL power. This circuit can source a
maximum of 100 mA with a 33 V supply.
HIGH ACCURACY DAC
It is possible to configure the AD5292 as a high accuracy DAC
by optimizing the resolution of the device over a specific
reduced voltage range. This is achieved by placing external
resistors on either side of the RDAC, as shown in Figure 72.
The improved ±1% R-Tolerance specification greatly reduces
error associated with matching to discrete resistors.
3
1024
)
1024
(
1
1024
3
)
(
)
(
)
(
R
V
R
D
V
AB
D
DD
AB
D
OUT
+
×
+
×
+
=
(8)
07
67
4-
1
54
AD5292
U1
VOUT
B
R2
20k
R1
R3
±1%
OP1177
V+
V–
VDD
U2
Figure 72. Optimizing Resolution
VARIABLE GAIN INSTRUMENTATION AMPLIFIER
The AD8221 in conjunction with the AD5291 and AD5292 and
the ADG1207, as shown in Figure 73, make an excellent
instrumentation amplifier for use in data acquisition systems.
The data acquisition system’s low distortion and low noise
enable it to condition signals in front of a variety of ADCs.
07
67
4-
15
6
AD8221
AD5292
+VIN1
VDD
VOUT
VSS
ADG1207
+VIN4
–VIN1
–VIN4
Figure 73. Data Acquisition System
The gain can be calculated by using Equation 9.
()
AB
R
D
G
×
+
=
1024
kΩ
4
.
49
1
)
(
(9)
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