Datasheet

MAX1253/MAX1254
Stand-Alone, 10-Channel, 12-Bit System Monitors
with Internal Temperature Sensor and V
DD
Monitor
2 _______________________________________________________________________________________
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.
V
DD
to GND .............................................................-0.3V to +6V
Analog Inputs to GND (AIN0–AIN7, 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, INT) ........ -0.3V to (V
DD
+ 0.3V)
Digital Outputs Sink Current ............................................. 25mA
Maximum Current into Any Pin .......................................... 50mA
Continuous Power Dissipation (T
A
= +70°C)
16-Pin TSSOP (derate 8.7mW/°C above +70°C) .........696mW
Operating Temperature Range ...........................-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
Resolution RES 12 Bits
Grade A ±1.0
Integral Nonlinearity (Note 1) INL
Grade B ±1.0
LSB
Differential Nonlinearity DNL No missing codes overtemperature ±1.0 LSB
Offset Error ±4.0 LSB
External reference ±4.0 LSB
Gain Error (Note 2)
Internal reference 2.0 %FSR
Offset Error Tempco ±5p p m /°C
External reference ±2
Gain and Temperature Coefficient
Internal reference ±30
p p m /°C
C hannel - to- C hannel Offset M atchi ng ±0.1 LSB
V
DD
M oni tor Accur acy Internal reference ±2.5 %
DYNAMIC ACCURACY
(10kHz sine-wave input, 2.5V
P-P
(MAX1253), 4.096V
P-P
(MAX1254), 64ksps, f
SCLK
= 10MHz, bipolar input mode)
Signal-to-Noise Plus Distortion SINAD 70 dB
Total Harmonic Distortion THD Up to the 5th harmonic -76 dB
Spurious-Free Dynamic Range SFDR 72 dB
Full-Power Bandwidth -3dB point 1 MHz
Full Linear Bandwidth S / (N + D) > 68dB 100 kHz
CONVERSION RATE
Voltage measurement, all ref modes 10.6 11.7
Temp-sensor ref modes 01, 10 46 50.7Conversion Time (Note 3) t
CONV
Temp-sensor ref mode 00 73 80
µs
Single-Channel Throughput Manual trigger, voltage measurement 70 ksps
Power-Up Time t
PU
Internal reference (Note 4) 40 45 µs
ANALOG INPUT
(AIN0–AIN7)
U ni p ol ar , si ng l e- end ed , or d i ffer enti al i np uts 0 +V
REF
Input Voltage Range (Note 5)
Bipolar, differential inputs -V
REF
/ 2 +V
REF
/ 2
V
Common-Mode Range Differentially configured inputs 0 V
DD
V
Common-Mode Rejection D i ffer enti all y confi g ur ed i np uts, V
C M
= 0 to V
D D
-90 dB
ELECTRICAL CHARACTERISTICS
(V
DD
= +2.7V to +3.6V (MAX1253), V
DD
= +4.5V to +5.5V (MAX1254), V
REF
= +2.5V (MAX1253), V
REF
= +4.096V (MAX1254), f
SCLK
= 10MHz (50% duty cycle), T
A
= T
MIN
to T
MAX
, unless otherwise noted. Typical values are at T
A
= +25°C.)