Datasheet

10Maxim Integrated
MAX11335–MAX11340
500ksps, 12-/10-Bit, 4-/8-/16-Channel ADCs with
Post-Mux External Signal Conditioning Access
Typical Operating Characteristics (continued)
(MAX11335ATJ+/MAX11336ATJ+/MAX11337ATJ+, T
A
= +25°C, unless otherwise noted.)
SNR vs. INPUT RESISTANCE
MAX11335 toc09
R
IN
(I)
SNR (dB)
4500
4000
3500
3000
2500
2000
1500
1000
500
71.5
72.0
72.5
73.0
71.0
0 5000
f
SAMPLE
= 500ksps
f
IN
= 100kHz
AOP SHORTED TO AIP
AON SHORTED TO AIN
BUFFER BETWEEN AOP AND AIP
BUFFER BETWEEN AON AND AIN
80
85
90
SFDR vs. INPUT RESISTANCE
MAX11335 toc12
SFDR (dB)
R
IN
(I)
1000 2000 3000 4000
500 1500 2500 3500 4500
75
0 5000
f
SAMPLE
= 500ksps
f
IN
= 100kHz
AOP SHORTED TO AIP
AON SHORTED TO AIN
BUFFER BETWEEN AOP AND AIP
BUFFER BETWEEN AON AND AIN
SUPPLY CURRENT vs. TEMPERATURE
MAX11335 toc15
TEMPERATURE (°C)
I
VDD
(mA)
1109580655035205-10-25
1.0
1.5
2.0
2.5
0.5
-40 125
f
SAMPLE
= 500ksps
V
DD
= 3.0V
69
70
71
72
SNR vs. REFERENCE VOLTAGE
MAX11335 toc16
V
REFP
(V)
SNR (dB)
3.43.02.62.21.81.4
68
1.0
f
SAMPLE
= 500ksps
f
IN
= 100kHz
74
73
SINAD vs. INPUT RESISTANCE
MAX11335 toc10
SINAD (dB)
R
IN
(I)
1000 2000 3000 4000
500 1500 2500 3500 4500
71
72
73
70
0 5000
f
SAMPLE
= 500ksps
f
IN
= 100kHz
AOP SHORTED TO AIP
AON SHORTED TO AIN
BUFFER BETWEEN AOP AND AIP
BUFFER BETWEEN AON AND AIN
100kHz SINE-WAVE INPUT
(8192 POINT FFT PLOT)
MAX11335 toc13
AMPLITUDE (dB)
-100
-80
-60
-40
-20
0
-120
f
SAMPLE
= 500ksps
f
IN
= 100kHz
200150100500 250
FREQUENCY (kHz)
A
HD3
= -86.678dB
f = 205.399kHz
A
HD2
= -102dB
f = 200.03kHz
-85
-80
-75
-70
THD vs. INPUT RESISTANCE
MAX11335 toc11
THD (dB)
R
IN
(I)
1000 2000 3000 4000
500 1500 2500 3500 4500
-90
0 5000
f
SAMPLE
= 500ksps
f
IN
= 100kHz
AOP SHORTED TO AIP
AON SHORTED TO AIN
BUFFER BETWEEN AOP AND AIP
BUFFER BETWEEN AON AND AIN
REFERENCE CURRENT
vs. SAMPLING RATE
MAX11335 toc14
f
SAMPLE
(ksps)
I
REF
(µA)
400300200100
10
20
30
0
0 500