Datasheet

AD8331/AD8332/AD8334
Rev. G | Page 11 of 56
Pin No. Mnemonic Description
27 GAIN34 Gain Control Voltage for CH3 and CH4.
28 CLMP34 Output Clamping Level Input for CH3 and CH4.
29 HILO Gain Select for Postamp 0 dB or 12 dB.
30 VCM4 CH4 Common-Mode Voltage—AC Bypass.
31 VCM3 CH3 Common-Mode Voltage—AC Bypass.
32 NC No Connect.
33 COM34 VGA Ground CH3 and CH4.
34 VOH4 CH4 Positive VGA Output.
35 VOL4 CH4 Negative VGA Output.
36 VPS34 VGA Supply 5 V CH3 and CH4.
37 VOL3 CH3 Negative VGA Output.
38 VOH3 CH3 Positive VGA Output.
39 COM34 VGA Ground CH3 and CH4.
40 NC No Connect.
41 MODE Gain Control Slope, Logic Input, 0 = Positive.
42 COM12 VGA Ground CH1 and CH2.
43 VOH2 CH2 Positive VGA Output.
44 VOL2 CH2 Negative VGA Output.
45 VPS12 CH2 VGA Supply 5 V CH1 and CH2.
46 VOL1 CH1 Negative VGA Output.
47 VOH1 CH1 Positive VGA Output.
48 COM12 VGA Ground CH1 and CH2.
49 VCM2 CH2 Common-Mode Voltage—AC Bypass.
50 VCM1 CH1 Common-Mode Voltage—AC Bypass.
51 EN34 Shared LNA/VGA Enable CH3 and CH4.
52 EN12 Shared LNA/VGA Enable CH1 and CH2.
53 CLMP12 Output Clamping Level Input CH1 and CH2.
54 GAIN12 Gain Control Voltage CH1 and CH2.
55 VPS1 CH1 LNA Supply 5 V.
56 VIN1 CH1 VGA Negative Input.
57 VIP1 CH1 VGA Positive Input.
58 LOP1 CH1 LNA Positive Output.
59 LON1 CH1 LNA Feedback Output (for R
IZ
).
60 NC Not Connected.
61 LMD1 CH 1 LNA Midsupply Pin; Connect a Capacitor for Midsupply HF Bypass.
62 INH1 CH1 LNA Input.
63 COM1 CH1 LNA Ground.
64 COM2 CH2 LNA Ground.
EPAD
The exposed paddle must be soldered to the PCB ground to ensure proper heat dissipation,
noise, and mechanical strength benefits.