Rainbow Electronics MAX1299 User Manual
Page 2
MAX1298/MAX1299
12-Bit Serial-Output Temperature Sensors
with 5-Channel ADC
2
_______________________________________________________________________________________
ABSOLUTE MAXIMUM RATINGS
ELECTRICAL CHARACTERISTICS
(V
DD
= 4.75V to 5.25V (MAX1298), V
DD
= +2.7V to 3.6V (MAX1299), external reference, V
REF
= +2.5V (MAX1298), V
REF
= +1.2V
(MAX1299), f
SCLK
= 2.5MHz, 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
SHO to GND ...............................................-0.3V to (V
DD
+ 0.3V)
Analog Inputs to GND
(AIN0, AIN1, AIN2, AIN3, AIN4,
AIN5, REF).............................................-0.3V to (V
DD
+ 0.3V)
Digital Inputs to GND (DIN, SCLK,
CS)......-0.3V to (V
DD
+ 0.3V)
Digital Outputs to GND (DOUT, SSTRB) ....-0.3V to (V
DD
+ 0.3V)
Digital Output Sink Current ..…………………………………25mA
Maximum Current into Any Pin……………………………….50mA
Continuous Power Dissipation (T
A
= +70°C)
16-Pin SSOP (derate 8.00mW/°C above +70°C) ........667mW
Operating Temperature Range
MAX129_ _EAE ...............................................-40°C to +85°C
Junction Temperature....……………………………………+150°C
Storage Temperature Range .............................-65°C to +150°C
Lead Temperature (soldering, 10s) ....……………………+300°C
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
DC ACCURACY (Note 1)
Resolution
RES
12
Bits
Relative Accuracy (Note 2)
INL
±1
LSB
Differential Nonlinearity
DNL
±1
LSB
Offset Error
Inputs AIN0
−AIN5
±2
LSB
Offset Temperature Coefficient
±10
µV/°C
Gain Error
Inputs AIN0
−AIN5, offset nulled
±4
LSB
V
DD
/4 Absolute Error
±2
LSB
Gain Temperature Coefficient
±2
ppm/
°C
Channel-to-Channel Offset
Matching
±0.5
LSB
CONVERSION RATE
Voltage measurement
1.1
Conversion Time (Note 3)
t
CONV
Temperature measurement
2.2
ms
Track/Hold Acquisition Time
t
ACQ
16
µs
Aperture Delay
t
APR
30
ns
Internal Clock Frequency
f
CLK
57.6
62.3
65.5
kHz
ANALOG INPUTS (AIN0
−AIN5)
Input Voltage Range (Note 4)
Measurement with respect to IN-, Figure 1
-2V
REF
+2V
REF
V
Common-Mode Range
0
V
DD
V
Input Current (Note 5)
0.1
5
µA
Input Capacitance
16
pF