MAX1391 Datasheet, PDF (7/18 Pages) Maxim Integrated Products – 1.5V to 3.6V, 416ksps, 1-Channel True-Differential/2-Channel Single-Ended, 8-Bit, SAR ADCs

1.5V to 3.6V, 416ksps, 1-Channel True-Differential/
2-Channel Single-Ended, 8-Bit, SAR ADCs
Typical Operating Characteristics (continued)
(V_DD = +1.6V, V_REF = +1.6V, C_REF = 0.1µF, C_L = 30pF, f_SCLK = 5MHz. T_A = +25°C, unless otherwise noted.)
GAIN ERROR vs. REFERENCE VOLTAGE
400
V_DD = 3.6V
300
200
100
0
-100
-200
-300
-400
0.6 1.1 1.6 2.1 2.5 3.0 3.5
REFERENCE VOLTAGE (V)
SUPPLY CURRENT
vs. CONVERSION RATE
800
f_SCLK = 5MHz, f_SAMPLE = 417ksps
A_IN = FULL SCALE, 100kHz SINE WAVE
CL = 30pF
600
V_DD = V_REF = 3.0V
400
200
V_DD = V_REF = 1.6V
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
800
700
600
500
400
1.5
V_REF = 1.5V, C_L = 33pF
f_SCLK = 5MHz, f_SAMPLE = 416ksps
AIN = FULL SCALE, 10kHz SINE WAVE
1.8 2.1 2.4 2.7 3.0 3.3 3.6
SUPPLY VOLTAGE (V)
SHUTDOWN CURRENT
vs. SUPPLY VOLTAGE
0.5
0.4
0.3
0.2
0.1
SUPPLY CURRENT vs. TEMPERATURE
600
V_REF = 1.5V, C_L = 33pF
f_SCLK = 5MHz, f_SAMPLE = 416ksps
AIN = FULL SCALE, 10kHz SINE WAVE
550
500
450
400
-55 -25 5
35 65 95 125
TEMPERATURE (°C)
SHUTDOWN SUPPLY CURRENT
vs. TEMPERATURE
2.0
1.6
1.2
V_DD = 3.6V
0.8
V_DD = 1.8V
0.4
0
0 50 100 150 200 250 300 350 400
f_SAMPLE (ksps)
0
1.5 1.8 2.1 2.4 2.7 3.0 3.3 3.6
VOLTAGE (V)
0
-55 -25 5 35 65
TEMPERATURE (°C)
95 125
100
90
80
70
60
50
40
30
20
10
0
0
SCLK-TO-DOUT TIMING
V_DD = 1.5V
V_DD = 3.6V
100 200 300 400 500 600
C_LOAD (pF)
FFT
0
V_DD = 1.6V
V_REF = 1.6V
-20 fS = 417ksps
f_IN = 100.4kHz
THD = -79.9dB
-40 ^{SINAD = 49.0dB}
SFDR = -71.1dB
-60
-80
-100
0
20 40 60 80 100 120 140
FREQUENCY (kHz)
SAMPLING ERROR
vs. SOURCE IMPEDANCE
0.3
AIN HIGH-TO-LOW FS TRANSITION
0.2
0.1
0
-0.1
AIN HIGH-TO-LOW FS TRANSITION
-0.2
-0.3
0
500 1000 1500 2000 2500
SOURCE IMPEDANCE (Ω)
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