Rainbow Electronics MAX126 User Manual
Page 2
MAX125
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
MAX125_CAX/MAX126_CAX ...............................0°C to +70°C
MAX125_EAX/MAX126_EAX ............................-40°C to +85°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10sec)................................300°C
CONDITIONS
UNITS
MIN
TYP
MAX
SYMBOL
PARAMETER
All channels
14
N
Resolution
MAX125A/MAX126A
Bits
±2
INL
Integral Nonlinearity
(Note 2)
MAX12_B/C
LSB
±2
±4
MAX12_A/B, guaranteed monotonic to 14 bits
±1
T
A
= +25°C
mV
±5
±15
Bipolar Zero Error
T
A
= T
MIN
to T
MAX
±25
Bipolar Zero-Error Match
Between all channels
mV
1.2
5
±5
ppm/°C
Zero-Code Tempco
±5
±10
mV
Gain Error
±15
T
A
= T
MIN
to T
MAX
T
A
= +25°C
1.2
5
mV
Gain Error Match
±5
Between all channels
Gain Error Tempco
ppm/°C
72
75
SINAD
Single-channel mode,
channel 1A, 250ksps
Signal-to-Noise Plus
Distortion (Note 4)
dB
-89
-80
THD
Single-channel mode, channel 1A, 250ksps
Total Harmonic
Distortion (Notes 4, 5)
dB
80
90
SFDR
Single-channel mode, channel 1A, 250ksps
Spurious-Free Dynamic
Range (Note 4)
dB
80
Single-channel mode, channel 1A, 250ksps
Channel-to-Channel
Isolation (Note 6)
dB
MAX125C/MAX126C,
guaranteed monotonic to 13 bits
LSB
±2
DNL
Differential Nonlinearity
DC ACCURACY
(Note 1)
DYNAMIC PERFORMANCE
(f
CLK
= 16MHz, f
IN
= 10.06kHz) (Notes 1, 3)
70
72
MAX125
MAX126