Datasheet

1000
0.1
1k 10k 100k 1M 10M
OUTPUT IMPEDANCE
vs. FREQUENCY
MAX4249-57 TOC19
FREQUENCY (Hz)
OUTPUT IMPEDANCE (Ω)
1
10
100
A
V
= 1 (MAX4250–MAX4254)
A
V
= 10 (MAX4249/MAX4255/
MAX4256/MAX4257)
30
0
10 100 1k 10k 100k
INPUT VOLTAGE-N0ISE DENSITY
vs. FREQUENCY
MAX4249-57 TOC20
FREQUENCY (Hz)
Vn-EQUIVALENT INPUT NOISE-VOLTAGE (nV/√Hz)
5
10
15
20
25
200nV/div
1s/div
0.1Hz TO 10Hz
P-P
NOISE
MAX4249-57 TOC21
V
DD
= 3V OR 5V
V
P-PNOISE
= 760nV
P-P
-160
-140
-120
-100
-80
-60
-40
-20
0
MAX4250–MAX4254
FFT OF DISTORTION AND NOISE
FREQUENCY (Hz)
AMPLITUDE (dBc)
10 5k 10k
15k
20k
MAX4249-57 TOC22
R
L
= 1kΩ
f
O
= 1kHz
A
V
= 1
f
O
HD2
HD3
HD4
HD5
V
OUT
= 2V
P-P
-140
-120
-100
-80
-60
-40
-20
0
20
10 5k 10k
15k
20k
MAX4249/MAX4255/MAX4256/MAX4257
FFT OF DISTORTION AND NOISE
MAX4249-57 TOC23
FREQUENCY (Hz)
AMPLITUDE (dBc)
V
OUT
= 4V
P-P
f
O
= 1kHz
HD2
HD3
V
IN
10kΩ
100kΩ
11kΩ
f
O
V
O
0.001
0.01
0.1
1
10
0 21 3 4 5
MAX4250–MAX4254
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT VOLTAGE (V
DD
= 5V)
MAX4249-57 TOC24
OUTPUT VOLTAGE (V
P-P
)
THD+N (%)
V
IN
R
L
= 1kΩ
100kΩ
11kΩ
A
V
= 10
f
O
= 3kHz
FILTER BW = 30kHz
V
O
R
L
R
L
= 10kΩ
R
L
= 100kΩ
0.001
0.01
0.1
1
10
0 21 3
MAX4249-57 TOC25
OUTPUT VOLTAGE (V
P-P
)
THD+N (%)
100kΩ
11kΩ
MAX4250–MAX4254
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT VOLTAGE SWING (V
DD
= 3V)
V
OUT
V
IN
R
L
R
L
= 1kΩ
R
L
= 10kΩ
R
L
= 100kΩ
A
V
= 10
f
O
= 3kHz
FILTER BW = 30kHz
0.001
0.01
0.1
1
0 3 41 2 5
MAX4249-57 TOC26
OUTPUT VOLTAGE (V
P-P
)
THD+N (%)
f
O
= 20kHz, FILTER BW = 80kHz
100kΩ
11kΩ
MAX4249/MAX4255/MAX4256/MAX4257
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT VOLTAGE SWING
V
OUT
V
IN
R
L
A
V
= 10
f
O
= 3kHz, FILTER BW = 30kHz
0.0001
0.01
0.001
0.1
1
10 1k100 10k
MAX4250–MAX4254
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. FREQUENCY
MAX4249-57 TOC27
FREQUENCY (Hz)
THD+N (%)
R2
R1
R1 = 560Ω, R2 = 53kΩ
V
IN
V
OUT
R
L
A
V
= 100
A
V
= 10
R1 = 5.6kΩ, R2 = 53kΩ
FILTER BW = 22kHz
R
L
= 10kΩ TO GND
V
O
= 2V
P-P
A
V
= 1
UCSP, Single-Supply, Low-Noise,
Low-Distortion, Rail-to-Rail Op Amps
Maxim Integrated 7
MAX4249–MAX4257
Typical Operating Characteristics (continued)
(V
DD
= 5V, V
SS
= 0V, V
CM
= V
OUT
= V
DD
/2, input noise floor of test equipment =10nV/!Hz for all distortion measurements,
T
A
= +25°C, unless otherwise noted.)