Datasheet

MAX2034
Quad-Channel, Ultra-Low-Noise Amplifier with
Digitally Programmable Input Impedance
4 _______________________________________________________________________________________
Typical Operating Characteristics
(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.)
25
-5
0.1 10 1001 1000
SMALL-SIGNAL BANDWIDTH
vs. FREQUENCY
MAX2034 toc01
FREQUENCY (MHz)
GAIN (dB)
0
5
10
15
20
V
IN_
= 112mV
P-P
,
R
IN
= 200Ω
25
-5
0.1 10 1001 1000
SMALL-SIGNAL BANDWIDTH
vs. FREQUENCY
MAX2034 toc02
FREQUENCY (MHz)
GAIN (dB)
0
5
10
15
20
V
IN
= 112mV
P-P
R
IN
= 50Ω
25
-5
0.1 10 1001 1000
LARGE-SIGNAL BANDWIDTH
vs. FREQUENCY
MAX2034 toc03
FREQUENCY (MHz)
GAIN (dB)
0
5
10
15
20
V
IN_
= 500mV
P-P
,
R
IN
= 200Ω
25
-5
0.1 10 1001 1000
LARGE-SIGNAL BANDWIDTH
vs. FREQUENCY
MAX2034 toc04
FREQUENCY (MHz)
GAIN (dB)
0
5
10
15
20
V
IN
= 500mV
P-P
R
IN
= 50Ω
30
40
35
55
50
45
65
60
70
02010 30 40 50
COMPLEX INPUT IMPEDANCE MAGNITUDE
vs. FREQUENCY
MAX2034 toc05
FREQUENCY (MHz)
I
Z
IN
I
D2/D1/D0 = 0/0/0
R
IN
= 50Ω
60
80
70
110
100
90
130
120
140
010515202530
COMPLEX INPUT IMPEDANCE MAGNITUDE
vs. FREQUENCY
MAX2034 toc06
FREQUENCY (MHz)
I
Z
IN
I
D2/D1/D0 = 0/0/1
R
IN
= 100Ω
100
150
125
200
175
250
225
275
084121620
COMPLEX INPUT IMPEDANCE MAGNITUDE
vs. FREQUENCY
MAX2034 toc07
FREQUENCY (MHz)
I
Z
IN
I
D2/D1/D0 = 0/1/0
R
IN
= 200Ω
100
400
250
700
550
1000
850
1150
084121620
COMPLEX INPUT IMPEDANCE MAGNITUDE
vs. FREQUENCY
MAX2034 toc08
FREQUENCY (MHz)
I
Z
IN
I
D2/D1/D0 = 0/1/1
R
IN
= 1kΩ
-80
-60
-70
-40
-50
-30
-20
030
HARMONIC DISTORTION
vs. FREQUENCY
MAX2034 toc09
FREQUENCY (MHz)
HARMONIC DISTORTION (dBc)
105152520
V
OUT
= 1V
P-P
DIFFERENTIAL
R
L
= 200Ω
THIRD HARMONIC
SECOND HARMONIC