MAX11329 Datasheet, PDF (10/37 Pages) Maxim Integrated Products – 3Msps, 12-/10-Bit, 8-/16-Channel ADCs with Post-Mux External Signal Conditioning Access

MAX11329–MAX11332
3Msps, 12-/10-Bit, 8-/16-Channel ADCs with
Post-Mux External Signal Conditioning Access
Typical Operating Characteristics (continued)
(MAX11331ATI+/MAX11332ATI+, T_A = +25°C, unless otherwise noted.)
SNR vs. INPUT RESISTANCE
73
BUFFER BETWEEN AOP AND AIP
BUFFER BETWEEN AON AND AIN
72
AOP SHORTED TO AIP
71
AON SHORTED TO AIN
SINAD vs. INPUT RESISTANCE
73
fSAMPLE = 3Msps
fIN = 100kHz
72
BUFFER BETWEEN AOP AND AIP
BUFFER BETWEEN AON AND AIN
71
fSAMPLE = 3Msps
f_IN = 100kHz
70
0 1000 2000 3000 4000 5000
500 1500 2500 3500 4500
RIN (I)
SFDR vs. INPUT RESISTANCE
90
fSAMPLE = 3Msps
fIN = 100kHz
85
BUFFER BETWEEN AOP AND AIP
BUFFER BETWEEN AON AND AIN
80
75
AOP SHORTED TO AIP
AON SHORTED TO AIN
AOP SHORTED TO AIP
AON SHORTED TO AIN
70
0 1000 2000 3000 4000 5000
500 1500 2500 3500 4500
RIN (I)
100kHz SINE-WAVE INPUT
(8192 POINT FFT PLOT)
0
fSAMPLE = 3Msps
fIN = 100kHz
-20
-40
-60
AHD2 = -88.93dB
f = 200kHz
A_HD3 = -88.23dB
-80
f = 300kHz
-100
THD vs. INPUT RESISTANCE
-70
f_SAMPLE = 3Msps
fIN = 100kHz _{AOP SHORTED TO AIP}
-75
AON SHORTED TO AIN
-80
BUFFER BETWEEN AOP AND AIP
BUFFER BETWEEN AON AND AIN
-85
-90
0
1000 2000 3000 4000 5000
500 1500 2500 3500 4500
RIN (I)
REFERENCE CURRENT
vs. SAMPLING RATE
200
150
100
50
70
0 1000 2000 3000 4000 5000
500 1500 2500 3500 4500
RIN (I)
-120
0
300 600 900 1200 1500
150 450 750 1050 1200
FREQUENCY (kHz)
0
0 500 1000 1500 2000 2500 3000
fSAMPLE (ksps)
SUPPLY CURRENT vs. TEMPERATURE
6.0
fSAMPLE = 3Msps
VDD = 3V
5.5
5.0
4.5
4.0
3.5
SNR vs. REFERENCE VOLTAGE
73
fSAMPLE = 3Msps
72 ^{fIN = 100kHz}
71
70
69
68
67
3.0
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
66
1.0 1.4 1.8 2.2 2.6 3.0 3.4
VREFP (V)
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