Rainbow Electronics MAX1109 User Manual
Page 2
MAX1108/MAX1109
Single-Supply, Low-Power,
2-Channel, Serial 8-Bit ADCs
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS—MAX1108
(V
DD
= +2.7V to +3.6V; unipolar input mode; COM = GND, f
SCLK
= 500kHz, external clock mode (50% duty cycle); 10 clocks/conver-
sion cycle (50ksps); 1µF capacitor at REF, external +2.048V reference at REF; T
A
= T
MIN
to T
MAX
; unless otherwise noted. Typical
values are at T
A
= +25°C.)
Stresses beyond those listed under “Absolute Maximum Ratings” may cause permanent damage to the device. These are stress ratings only, and functional
operation of the device at these or any other conditions beyond those indicated in the operational sections of the specifications is not implied. Exposure to
absolute maximum rating conditions for extended periods may affect device reliability.
V
DD
to GND ..............................................................-0.3V to +6V
CH0, CH1, COM, REF, DOUT to GND .......-0.3V to (V
DD
+ 0.3V)
DIN, SCLK,
CS to GND ............................................-0.3V to +6V
Continuous Power Dissipation (T
A
= +70°C)
10-pin µMAX (derate 5.6mW/°C above +70°C) ............444mW
Operating Temperature Ranges
MAX110_CUB ......................................................0°C to +70°C
MAX110_EUB ...................................................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10sec) .............................+300°C
V
DD
= 2.7V to 3.6V
V
DD
= 5.5V (Note 2)
No missing codes over temperature
CONDITIONS
±0.15
±0.5
bits
8
Resolution
LSB
±0.2
INL
Relative Accuracy (Note 1)
LSB
±1
DNL
Differential Nonlinearity
UNITS
MIN
TYP
MAX
SYMBOL
PARAMETER
V
DD
= 5.5V (Note 2)
V
DD
= 2.7V to 3.6V
LSB
±0.5
Offset Error
±0.2
±1
LSB
±1
Gain Error (Note 3)
ppm/°C
±0.8
Gain Temperature Coefficient
T
A
= T
MIN
to T
MAX
T
A
= +25°C
mV
50
V
DD
/ 2 Sampling Accuracy
dB
49
SINAD
Signal-to-Noise Plus Distortion
dB
-70
THD
Total Harmonic Distortion
(up to the 5th harmonic)
LSB
±0.5
TUE
Total Unadjusted Error
±1
LSB
±0.1
Channel-to-Channel
Offset Matching
-3dB rolloff
Unipolar input, V
COM
= 0
MHz
0.8
Full-Power Bandwidth
MHz
1.5
BW
-3dB
Small-Signal Bandwidth
0
V
REF
Input Voltage Range (Note 4)
dB
68
SFDR
Spurious-Free Dynamic Range
Bipolar input, V
COM
or V
CH1
= V
REF
/ 2,
referenced to COM or CH1
V
±V
REF
/ 2
V
CH_
pF
18
C
IN
Input Capacitance
On/off-leakage current,
V
COM
or V
CH
= 0 or V
DD
µA
±0.01
±1
Multiplexer Leakage Current
DC ACCURACY
DYNAMIC PERFORMANCE
(10kHz sine-wave input, 2.048Vp-p, 50ksps, 500kHz external clock)
ANALOG INPUTS