ad8264 Analog Devices, Inc., ad8264 Datasheet - Page 7

• Manufacturer Part Number: ad8264
• Description: Quad, 235 Mhz, Dc Coupled Vga And Differential Output Amplifier
• Manufacturer: Analog Devices, Inc.

Preliminary Technical Data
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
Table 4. Pin Function Descriptions
Pin No.
0 (EP), 12, 39
1, 4, 7, 10
2, 3, 8, 9
5, 6, 11, 40
13, 14, 37, 38
15
16, 35
17, 34
18, 19, 32, 33
20, 25, 26, 31
21, 24, 27, 30
22, 23, 28, 29
36
Mnemonic
COMM
IPNx
OPPx
IPPx
GNHx
VOCM
VPOS
VNEG
OFSx
VGAx
VOLx
VOHx
GNLO
Description
Ground – Exposed Paddle (Pin 0) needs an electrical connection to ground. For proper RF grounding and
increased reliability the pad must be connected to the ground plane.
Negative Preamp Inputs for CH1 through 4 – Normally no external connection.
Preamp Output for CH1 through 4 – Internally connected to attenuator (VGA) input, normally no
external connection.
Positive Preamp Input for CH1 through 4 – High Impedance.
Positive Gain Control Voltage Input for CH1 through 4; referenced to GNLO (pin 36).
Sets Differential Output Amplifier (VOHx and VOLx) Common-Mode Voltage.
Positive Supply (Internally tied together)
Negative Supply (Internally tied together)
Voltage sets Differential Output Offset for CH1 through 4. This is the non-inverting input to the
differential amp and has the same bandwidth as the inverting input (VGAx).
VGA Output for CH1 through 4
Negative Differential Amplifier Output for CH1 through 4
Positive Differential Amplifier Output for CH1 through 4
Negative Gain Control Input (Reference for GNHx pins)
Figure 2. 40-Lead LFCSP
Rev. PrA| Page 7 of 10
AD8264