Datasheet

MAX125/MAX126
2x4-Channel, Simultaneous-Sampling
14-Bit DAS
2 _______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(AV
DD
= +5V ±5%, AV
SS
= -5V ±5%, DV
DD
= +5V ±5%, V
REFIN
= 2.5V, AGND = DGND = 0V, 4.7µF capacitor from REFOUT to
AGND, 0.1µF capacitor from REFIN to AGND, f
CLK
= 16MHz, external clock, 50% duty cycle, T
A
= T
MIN
to T
MAX
, unless otherwise
noted.)
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.
AV
DD
to AGND ...........................................................-0.3V to 6V
AV
SS
to AGND ............................................................0.3V to -6V
DV
DD
to DGND ...........................................................-0.3V to 6V
AGND to DGND .......................................................-0.3V to 0.3V
CH_ _ to AGND....................................................................±17V
REFIN, REFOUT to AGND ..........................................-0.3V to 6V
Digital Inputs/Outputs to DGND ..............-0.3V to (DV
DD
+ 0.3V)
Continuous Power Dissipation (T
A
= +70°C)
SSOP (derate 11.8mW/°C above +70°C) ....................941mW
Operating Temperature Ranges
MAX125CCAX/MAX126CCAX ............................0°C to +70°C
MAX125CEAX/MAX126CEAX..........................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10sec)................................300°C
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
DC ACCURACY (Note 1)
Resolution N All channels 14 Bits
Integral Nonlinearity INL (Note 2) ±2 ±4 LSB
No Missing Codes 13 Bits
T
A
= +25°C ±5 ±15
Bipolar Zero Error
T
A =
T
MIN
to T
MAX
±25
mV
Bipolar Zero-Error Match Between all channels 1.2 5 mV
Zero-Code Tempco ±5 ppm/°C
T
A
= +25°C ±5 ±10
Gain Error
T
A =
T
MIN
to T
MAX
±15
mV
Gain-Error Match Between all channels 1.2 5 mV
Gain-Error Tempco ±5 ppm/°C
DYNAMIC PERFORMANCE (f
CLK
= 16MHz, f
IN
= 10.06kHz (Notes 1, 3)
MAX125 72 75
Signal-to-Noise Plus Distortion SINAD
Single-channel mode,
channel 1A, 250ksps (Note
4)
MAX126 70 72
dB
Total Harmonic Distortion THD
Single-channel mode, channel 1A,
250ksps (Notes 4, 5)
-89 -80 dB
Spurious-Free Dynamic Range SFDR
Single-channel mode, channel 1A,
250ksps (Note 4)
80 90 dB
Channel-to-Channel Isolation
Single-channel mode, channel 1A,
250ksps (Note 6)
80 dB