MAX1393_09 Datasheet, PDF (7/18 Pages) Maxim Integrated Products – 1.5V to 3.6V, 312.5ksps, 1-Channel True-Differential/2-Channel Single-Ended, 12-Bit, SAR ADCs

1.5V to 3.6V, 312.5ksps, 1-Channel True-Differential/
2-Channel Single-Ended, 12-Bit, SAR ADCs
Typical Operating Characteristics (continued)
(V_DD = +1.5V, V_REF = +1.5V, 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 2.6 3.1 3.6
REFERENCE VOLTAGE (V)
SUPPLY CURRENT
vs. SUPPLY VOLTAGE
800
V_REF = 1.5V, C_L = 33pF
f_SCLK = 4.8MHz, f_SAMPLE = 300ksps
AIN = FULL SCALE, 10kHz SINE WAVE
700
600
500
400
1.5 1.8 2.1 2.4 2.7 3.0 3.3 3.6
SUPPLY VOLTAGE (V)
SUPPLY CURRENT vs. TEMPERATURE
600
V_REF = 1.5V, C_L = 33pF
f_SCLK = 4.8MHz, f_SAMPLE = 300ksps
AIN = FULL SCALE, 10kHz SINE WAVE
550
500
450
400
-55 -25 5 35 65 95 125
TEMPERATURE (°C)
SUPPLY CURRENT
vs. CONVERSION RATE
800
f_SCLK = 5MHz, f_SAMPLE = 312.5ksps
AIN = FULL SCALE, 75kHz SINE WAVE
C_L = 30pF
600
V_DD = V_REF = 3.0V
400
200
V_DD = V_REF = 1.6V
SHUTDOWN CURRENT
vs. SUPPLY VOLTAGE
0.5
SERIAL CLOCK IDLE
0.4
0.3
0.2
0.1
SHUTDOWN SUPPLY CURRENT
vs. TEMPERATURE
2.0
1.6
1.2
0.8
V_DD = 3.6V ^{VDD = 1.8V}
0.4
0
0 50 100 150 200 250 300 350
f_SAMPLE (ksps)
0
1.5 1.8 2.1 2.4 2.7 3.0 3.3 3.6
SUPPLY VOLTAGE (V)
0
-55 -25 5 35 65 95 125
TEMPERATURE (°C)
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 = 2.5V
V_REF = 2.5V
-25 ^{fS = 312.5ksps}
f_IN = 75kHz
THD = -90.3dB
-50
SINAD = 72.1dB
SFDR = 93.3dB
-75
-100
-125
0
20 40 60 80 100 120 140 160
FREQUENCY (kHz)
SAMPLING ERROR
vs. SOURCE IMPEDANCE
4
3
AIN HIGH-TO-LOW FS TRANSITION
2
1
0
-1
-2 _{AIN LOW-TO-HIGH FS TRANSITION}
-3
-4
0
500 1000 1500 2000 2500
SOURCE IMPEDANCE (Ω)
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