Datasheet

V
DD
to AGND ..........................................................-0.3V to +6V
AGND to DGND ...................................................-0.3V to +0.3V
CH0–CH7 to AGND .......................................................... ±16.5V
REF to AGND ........................................... -0.3V to (V
DD
+ 0.3V)
REFADJ to AGND .................................... -0.3V to (V
DD
+ 0.3V)
A0, A1, A2 to DGND ................................. -0.3V to (V
DD
+ 0.3V)
SHDN, SCL, SDA to DGND ....................................-0.3V to +6V
Max Current into Any Pin ...................................................50mA
Continuous Power Dissipation (T
A
= +70°C)
24-Pin Narrow PDIP
(derate 13.33mW/°C above +70°C) ..........................1067mW
28-Pin SSOP (derate 15mW/°C above +70°C) .........1201mW
Operating Temperature Ranges
MAX127_ C_ _/MAX128_ C_ _..........................0°C to +70°C
MAX127_ E_ _/MAX128_ E_ _ ...................... -40°C to +85°C
Storage Temperature Range ............................-65°C to +150°C
Lead Temperature (soldering, 10s) ................................. +300°C
Soldering Temperature (reflow) ....................................... +260°C
(V
DD
= +5V ±5%; unipolar/bipolar range; external reference mode, V
REF
= 4.096V; 4.7μF at REF; external clock, f
CLK
= 400kHz;
T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
ACCURACY (Note 1)
Resolution 12 Bits
Integral Nonlinearity INL
MAX127A ±1/2
LSB
MAX127B/MAX128B ±1
Differential Nonlinearity DNL ±1 LSB
Offset Error
Unipolar
MAX127A ±3
LSB
MAX127B/MAX128B ±5
Bipolar
MAX127A ±5
MAX127B/MAX128B ±10
Channel-to-Channel Offset Error
Matching
Unipolar ±0.1
LSB
Bipolar ±0.3
Gain Error (Note 2)
Unipolar
MAX127A ±7
LSB
MAX127B/MAX128B ±10
Bipolar
MAX127A ±7
MAX127B/MAX128B ±10
Gain Tempco (Note 2)
Unipolar 3
ppm/°C
Bipolar 5
DYNAMIC SPECIFICATIONS (800Hz sine-wave input, ±10V
P-P
(MAX127) or ±4.096V
P-P
(MAX128), f
SAMPLE
= 8ksps)
Signal-to-Noise Plus Distortion
Ratio
SINAD 70 dB
Total Harmonic Distortion THD Up to the 5th harmonic -87 -80 dB
Spurious-Free Dynamic Range SFDR 81 dB
Channel-to-Channel Crosstalk
4kHz, V
IN
= ±5V (Note 3) -86
dB
DC, V
IN
= ±16.5V -96
Aperture Delay 200 ns
Aperture Jitter 10 ns
MAX127/MAX128 Multirange, +5V, 12-Bit DAS with
2-Wire Serial Interface
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Absolute Maximum Ratings
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