+2.7V, Low-Power,
12-Bit Serial ADCs in 8-Pin SO
MAX1240/MAX1241
ABSOLUTE MAXIMUM RATINGS
V
DD
to GND .............................................................-0.3V to +6V
AIN to GND................................................-0.3V to (V
DD
+ 0.3V)
REF to GND ...............................................-0.3V to (V
DD
+ 0.3V)
Digital Inputs to GND...............................................-0.3V to +6V
DOUT to GND............................................-0.3V to (V
DD
+ 0.3V)
DOUT Current ..................................................................±25mA
Continuous Power Dissipation (T
A
= +70°C)
Plastic DIP (derate 9.09mW/°C above +70°C) ...........727mW
SO (derate 5.88mW/°C above +70°C)........................471mW
CERDIP (derate 8.00mW/°C above +70°C)................640mW
Operating Temperature Ranges
MAX1240_C_A/MAX1241_C_A .........................0°C to +70°C
MAX1240_E_ A/MAX1241_E_ A .....................-40°C to +85°C
MAX1240_MJA/MAX1241_MJA ...................-55°C to +125°C
Storage Temperature Range............................-60°C to +150°C
Lead Temperature (soldering, 10sec) ............................+300°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.
ELECTRICAL CHARACTERISTICS
(V
DD
= +2.7V to +3.6V (MAX1240); V
DD
= +2.7V to +5.25V (MAX1241); 73ksps, f
SCLK
= 2.1MHz (50% duty cycle); MAX1240—4.7µF
capacitor at REF pin, MAX1241—external reference; V
REF
= 2.500V applied to REF pin; T
A
= T
MIN
to T
MAX
; unless otherwise noted.)
PARAMETER
DC ACCURACY
(Note 1)
Resolution
Relative Accuracy (Note 2)
Differential Nonlinearity
Offset Error
Gain Error (Note 3)
Gain Temperature Coefficient
DYNAMIC SPECIFICATIONS
(10kHz sine-wave input, 0V to 2.500Vp-p, 73ksps, f
SCLK
= 2.1MHz)
Signal-to-Noise Plus
Distortion Ratio
Total Harmonic Distortion
Spurious-Free Dynamic Range
Small-Signal Bandwidth
Full-Power Bandwidth
CONVERSION RATE
Conversion Time
Track/Hold Acquisition Time
Throughput Rate
Aperture Delay
Aperture Jitter
ANALOG INPUT
Input Voltage Range
Input Capacitance
2
0
16
V
REF
V
pF
t
APR
t
CONV
t
ACQ
f
SCLK
= 2.1MHz
Figure 8
30
<50
5.5
7.5
1.5
73
µs
µs
ksps
ns
ps
SINAD
THD
SFDR
MAX124_A/B
MAX124_C
Up to the 5th harmonic
MAX124_A/B
MAX124_C
-3dB rolloff
MAX124_A/B
MAX124_C
80
88
2.25
1.0
-88
70
71.5
-80
dB
dB
dB
MHz
MHz
INL
DNL
MAX124_A
MAX124_B/C
No missing codes over temperature
MAX124_A
MAX124_B/C
±0.5
±0.5
±0.5
±0.25
12
±0.5
±1.0
±1
±3.0
±4.0
±4.0
Bits
LSB
LSB
LSB
LSB
ppm/°C
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
_______________________________________________________________________________________
MAXIM [ MAXIM INTEGRATED PRODUCTS ]
