MAX2034
Quad-Channel, Ultra-Low-Noise Amplifier with
Digitally Programmable Input Impedance
6 _______________________________________________________________________________________
Typical Operating Characteristics (continued)
(MAX2034 Typical Application Circuit, V
CC
= +4.75V to +5.25V, source impedance R
S
= 200Ω, PD = 0, D2/D1/D0 = 0/1/0 (R
IN
= 200Ω),
signal AC-coupled to IN_, INB_ is AC grounded, V
OUT
is the differential output between OUT_+ and OUT_-, f
IN_
= 5MHz, R
L
= 200Ω
between the differential outputs, C
L
= 20pF from each output to ground, T
A
= 0°C to +70°C, unless otherwise specified.)
Pin Description
PIN NAME FUNCTION
1 INC1 Channel 1 Analog Input Clamp. Input port to the integrated clamping diodes.
2 INB1 Channel 1 Analog Bypass Input. Connect a capacitor to GND as close as possible to the pin.
3 ZF2 Channel 2 Active Impedance-Matching Port. AC-couple to the source circuit with a capacitor.
4 IN2
Channel 2 LNA Analog Input. Single-ended input for channel 2 amplifier. Connect the analog input to
the source circuit through a series capacitor.
5 INC2 Channel 2 Analog Input Clamp. Input port to the integrated clamping diodes.
6 INB2 Channel 2 Analog Bypass Input. Connect a capacitor to GND as close as possible to the pin.
7 ZF3 Channel 3 Active Impedance-Matching Port. AC-couple to the source circuit with a capacitor.
8 IN3
Channel 3 LNA Analog Input. Single-ended input for channel 3 amplifier. Connect the analog input to
the source circuit through a series capacitor.
9 INC3 Channel 3 Analog Input Clamp. Input port to the integrated clamping diodes.
10 INB3 Channel 3 Analog Bypass Input. Connect a capacitor to GND as close as possible to the pin.
11 ZF4 Channel 4 Active Impedance-Matching Port. AC-couple to the source circuit with a capacitor.
12 IN4
Channel 4 LNA Analog Input. Single-ended input for channel 4 amplifier. Connect the analog input to
the source circuit through a series capacitor.
13 INC4 Channel 4 Analog Input Clamp. Input port to the integrated clamping diodes.
14 INB4 Channel 4 Analog Bypass Input. Connect a capacitor to GND as close as possible to the pin.
15, 21, 22, 25,
26, 33, 37, 39,
40, 46
GND Ground
16, 17, 20, 27,
30, 34, 38, 41,
44, 45
V
CC
5V Power Supply. Supply for the four LNAs. Bypass each V
CC
supply with a 100nF capacitor as
close as possible to the pin.
