Instruction Manual

MAX1198
Dual, 8-Bit, 100Msps, 3.3V, Low-Power ADC
with Internal Reference and Parallel Outputs
_______________________________________________________________________________________ 9
Typical Operating Characteristics (continued)
(V
DD
= 3.3V, OV
DD
= 2.5V, V
REFIN
= 2.048V, differential input at -1dB FS, f
CLK
= 100MHz, C
L
≈ 10pF, T
A
= +25°C, unless otherwise
noted.)
INTERNAL REFERENCE VOLTAGE
vs. TEMPERATURE
MAX1198 toc26
TEMPERATURE (°C)
V
REFOUT
(V)
603510-15
2.0340
2.0380
2.0420
2.0460
2.0500
2.0300
-40 85
INTERNAL REFERENCE VOLTAGE
vs. ANALOG SUPPLY VOLTAGE
MAX1198 toc25
V
DD
(V)
V
REFOUT
(V)
3.453.303.153.002.85
2.0405
2.0410
2.0415
2.0420
2.0425
2.0430
2.0400
2.70 3.60
SNR/SINAD, THD/SFDR
vs. CLOCK DUTY CYCLE
MAX1198 toc24
CLOCK DUTY CYCLE (%)
SNR/SINAD, THD/SFDR (dB, dBc)
56524844
40
50
SFDR
THD
SINAD
SNR
60
70
80
30
40 60
f
IN
= 19.87089082MHz
DIGITAL SUPPLY CURRENT
vs. ANALOG INPUT FREQUENCY
MAX1198 toc23
ANALOG INPUT FREQUENCY (MHz)
I
OVDD
(mA)
40302010
4
8
12
16
20
0
050
ANALOG SUPPLY CURRENT
vs. TEMPERATURE
MAX1198 toc22
TEMPERATURE (
°
C)
I
VDD
(mA)
603510-15
74
78
82
86
90
70
-40 85
SNR/SINAD, THD/SFDR
vs. SAMPLING SPEED
MAX1198 toc21
SAMPLING SPEED (Msps)
SNR/SINAD, THD/SFDR (dB, dBc)
10080604020
48
56
64
SFDR
SNR
SINAD
THD
72
80
40
0120
f
IN
= 19.87089082MHz
OFFSET ERROR vs. TEMPERATURE,
EXTERNAL REFERENCE V
REFIN
= 2.048V
MAX1198 toc20
TEMPERATURE (°C)
OFFSET ERROR (%FS)
603510-15
-0.7
-0.2
0.3
0.8
-1.2
CHA
-40 85
CHB
GAIN ERROR vs. TEMPERATURE,
EXTERNAL REFERENCE V
REFIN
= 2.048V
MAX1198 toc19
TEMPERATURE (
°
C)
GAIN ERROR (%FS)
603510-15
-0.1
0.1
0.3
0.5
-0.3
-40 85
CHB
CHA