MAX11905 Datasheet, PDF (9/29 Pages) Maxim Integrated Products – 20-Bit, 1.6Msps, Low-Power, Fully Differential

MAX11905
20-Bit, 1.6Msps, Low-Power, Fully Differential
SAR ADC
Typical Operating Characteristics (continued)
(V_AVDD = 1.8V, V_DVDD = 1.8V, V_OVDD = 1.8V, V_REFVDD = 3.6V, f_SAMPLE = 1.6Msps, V_REF = 3.3V, Internal Ref Buffer On, T_A = T_MIN
to T_MAX, unless otherwise noted. Typical values are at T_A = +25°C.)
10
8
6
4
2
0
-2
-4
-6
-8
-10
2.7
INL vs. V_REFVDD SUPPLY VOLTAGE
toc7
MAX INL (LSB)
MIN INL (LSB)
V_AVDD = 1.8V
V_REF = 2.5V
2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.6
V_REFVDD (V)
2.0
1.5
1.0
0.5
0.0
-0.5
-1.0
-1.5
-2.0
2.7
DNL vs. V_REFVDD SUPPLY VOLTAGE
toc8
MAX DNL (LSB)
MIN DNL (LSB)
V_AVDD = 1.8V
V_REF = 2.5V
2.8 2.9 3.0 3.1 3.2 3.3 3.4 3.5 3.6
V_REFVDD (V)
OFFSET AND GAIN ERROR vs. TEMPERATURE
20
toc9
OFFSET (LSB)
GAIN ERROR (LSB)
10
0
-10
-20
-40 -25 -10 5 20 35 50 65 80 95 110 125
TEMPERATURE (°C)
OFFSET ERROR vs. REFVDD VOLTAGE
2
toc11
1
V_REF = 2.5V
V_AVDD = 1.8V
0
-1
-2
-3
-4
-5
-6
-7
-8
2.7 2.8 2.9
3 3.1 3.2 3.3 3.4 3.5 3.6
V_REFVDD (V)
www.maximintegrated.com
1.00
0.75
0.50
0.25
0.00
-0.25
-0.50
-0.75
-1.00
1.7
OFFSET ERROR vs. AVDD SUPPLY VOLTAGE
toc10
1.75
1.8
1.85
1.9
V_AVDD (V)
OUTPUT NOISE HISTOGRAM
toc12
7000
STDEV = 4.3 LSB
6000
5000
4000
3000
2000
1000
0
OUTPUT CODE (DECIMAL)
Maxim Integrated │  9