参数资料
型号: AD641AP
厂商: Analog Devices Inc
文件页数: 11/16页
文件大小: 0K
描述: IC AMP LOG LP 2.3MA 20PLCC
标准包装: 1
放大器类型: 对数
电路数: 1
-3db带宽: 250MHz
电流 - 输入偏压: 7µA
电压 - 输入偏移: 50µV
电流 - 电源: 35mA
电流 - 输出 / 通道: 2.3mA
电压 - 电源,单路/双路(±): ±4.5 V ~ 7.5 V
工作温度: -40°C ~ 85°C
安装类型: 表面贴装
封装/外壳: 20-LCC(J 形引线)
供应商设备封装: 20-PLCC(9x9)
包装: 管件
REV. C
AD641
–4–
–Typical DC Performance Characteristics
1.015
1.010
1.005
1
0.995
0.990
0.985
0.980
–60 –40 –20
0
20
40 60 80 100 120 140
TEMPERATURE – C
SLOPE
CURRENT
mA
Figure 1. Slope Current, IY, vs.
Temperature
4.5
5.0
5.5
6.0
6.5
7.0
7.5
POWER SUPPLY VOLTAGES –
Volts
INTERCEPT
VOLTAGE
mV
1.015
1.010
1.005
1.000
0.995
0.990
0.985
Figure 4. Intercept Voltage, VX, vs.
Supply Voltages
INPUT VOLTAGE – mV
(EITHER SIGN)
OUTPUT
CURRENT
mA
2
1.0
0.1
1.0
1000.0
10.0
100.0
1
1.2
1.4
1.6
1.8
2.0
2.2
2.4
0.8
0.6
0.4
0.2
0
–0.2
–0.4
ERROR
dB
0
Figure 7. DC Logarithmic Transfer
Function and Error Curve for Single
AD641
1.20
1.15
1.10
1.05
1.00
0.95
0.90
–60 –40 –20
0
20
40 60 80 100 120 140
TEMPERATURE – C
INTERCEPT
mV
0.85
Figure 2. Intercept Voltage, VX, vs.
Temperature
14
13
12
11
10
9
8
7
–60 –40 –20 0
20
40
60 80 100 120 140
TEMPERATURE – C
INTERCEPT
mV
Figure 5. Intercept Voltage (Using
Attenuator) vs. Temperature
2.5
2.0
1.5
1.0
0.5
–60 –40 –20
0
20 40 60
80 100 120 140
TEMPERATURE – C
0
ABSOLUTE
ERROR
dB
Figure 8. Absolute Error vs. Tempera-
ture, VIN = ±1 mV to ±100 mV
4.5
5.0
5.5
6.0
6.5
7.0
7.5
POWER SUPPLY VOLTAGES –
Volts
SLOPE
CURRENT
mV
1.006
1.004
1.002
1.000
0.998
0.996
0.994
Figure 3. Slope Current, IY, vs. Supply
Voltages
–60 –40 –20
0
20
40
60 80 100 120 140
TEMPERATURE – C
DEVIATION
OF
INPUT
OFFSET
VOLTAGE
mV
0
–0.1
+0.4
+0.3
+0.2
+0.1
–0.2
–0.3
INPUT OFFSET VOLTAGE
DEVIATION WILL BE WITHIN
SHADED AREA.
Figure 6. Input Offset Voltage Devia-
tion vs. Temperature
2.5
2.0
1.5
1.0
0.5
–60 –40 –20
0
20
40 60
80 100 120 140
TEMPERATURE – C
0
ABSOLUTE
ERROR
dB
Figure 9. Absolute Error vs. Tempera-
ture, Using Attenuator. VIN = ±10 mV
to
±1 V, Pin 8 Grounded to Disable ITC
Bias
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