Rainbow Electronics MAX4249_MAX4257 - Manual (Page 7)

MAX4249–MAX4257
UCSP, Single-Supply, Low-Noise,
Low-Distortion, Rail-to-Rail Op Amps
_______________________________________________________________________________________ 7
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-P NOISE = 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
= 1k Ω
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
10k Ω
100k Ω 11k Ω
f O
V O
0.001
0.01
0.1
1
10
0 2 1 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 = 1k Ω
100k Ω
11k Ω
A V = 10
f O = 3kHz
FILTER BW = 30kHz
V
O
R L
R L = 10k Ω
R L = 100k Ω
0.001
0.01
0.1
1
10
0 2 1 3
MAX4249-57 TOC25
OUTPUT VOLTAGE (V P-P )
THD + N (%)
100k Ω
11k Ω
MAX4250–MAX4254
TOTAL HARMONIC DISTORTION PLUS NOISE
vs. OUTPUT VOLTAGE SWING (V
DD
= 3V)
V OUT
V IN
R L
R L = 1k Ω
R
L
= 10k Ω
R L = 100k Ω A
V
= 10
f O = 3kHz
FILTER BW = 30kHz
0.001
0.01
0.1
1
0 3 4 1 2 5
MAX4249-57 TOC26
OUTPUT VOLTAGE (V
P-P
)
THD + N (%)
f O = 20kHz, FILTER BW = 80kHz
100k Ω 11k Ω
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 1k 100 10k
MAX4250–MAX4254
TOTAL HARMONIC DISTORTION
PLUS NOISE vs. FREQUENCY
MAX4249-57 TOC27
FREQUENCY (Hz)
THD + N (%)
R2 R1
R1 = 560 Ω, R2 = 53kΩ
V IN
V OUT
R L
A V = 100
A V = 10 R1 = 5.6k Ω, R2 = 53kΩ
FILTER BW = 22kHz
R L = 10k Ω TO GND
V
O = 2V P-P
A V = 1
Typical Operating Characteristics (continued)
(V DD = 5V, V SS = 0, 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.)