AD8432 Analog Devices, AD8432 Datasheet - Page 8

• Manufacturer Part Number: AD8432
• Description: Dual-Channel Ultralow Noise Amplifier with Selectable Gain and Input Impedance
• Manufacturer: Analog Devices

Specifications of AD8432

• Vcc-vee: 4.5V to 5.5V
• Isy Per Amplifier: 12mA
• Packages: CSP
• -3db Bandwidth: 200MHz
• Slew Rate: 170V/µs
• Vos: 1mV
• Ib: n/a
• # Opamps Per Pkg: 2
• Input Noise (nv/rthz): 0.8nV/rtHz

AD8432
Figure 11. Input Impedance R
Figure 10. Input Impedance R
Figure 9. Differential Gain vs. Frequency, V
–12
–18
–24
105
100
115
110
55
54
53
52
51
50
49
48
47
46
45
30
24
18
12
–6
95
90
85
6
0
0.1
0.1
1
G = 24.08dB
G = 21.58dB
G = 18.06dB
G = 12.04dB
G = 24.08dB
G = 21.58dB
G = 18.06dB
G = 12.04dB
G = 24.08dB
G = 21.58dB
G = 18.06dB
G = 12.04dB
10
FREQUENCY (MHz)
FREQUENCY (MHz)
FREQUENCY (MHz)
IN
IN
vs. Frequency, 100 Ω Active Termination
vs. Frequency, 50 Ω Active Termination
1
1
100
OUT
= 2 V p-p, R
IN
= 50 Ω
10
1k
10
Rev. B | Page 8 of 28
Figure 12. Input Impedance R
240
230
220
210
200
190
180
170
160
3.5
3.0
2.5
2.0
1.5
1.0
0.5
0.1
Figure 13. Input Impedance R
10
0
1
0.1
0.1
0.1
G = 24.08dB
G = 21.58dB
G = 18.06dB
G = 12.04dB
G = 24.08dB
G = 21.58dB
G = 18.06dB
G = 12.04dB
Figure 14. Output Impedance vs. Frequency
1
FREQUENCY (MHz)
FREQUENCY (MHz)
FREQUENCY (MHz)
IN
vs. Frequency, 200 Ω Active Termination
IN
1
1
vs. Frequency, Unterminated
10
100
10
10