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| MAX1253 Datasheet, PDF (2/29 Pages) Maxim Integrated Products – Stand-Alone, 10-Channel, 12-Bit System Monitors with Internal Temperature Sensor and VDD Monitor | |||
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Stand-Alone, 10-Channel, 12-Bit System Monitors
with Internal Temperature Sensor and VDD Monitor
ABSOLUTE MAXIMUM RATINGS
VDD to GND .............................................................-0.3V to +6V
Analog Inputs to GND (AIN0âAIN7, REF) ... -0.3V to (VDD + 0.3V)
Digital Inputs to GND (DIN, SCLK, CS) .... -0.3V to (VDD + 0.3V)
Digital Outputs to GND (DOUT, INT) ........ -0.3V to (VDD + 0.3V)
Digital Outputs Sink Current ............................................. 25mA
Maximum Current into Any Pin .......................................... 50mA
Continuous Power Dissipation (TA = +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
Stresses beyond those listed under âAbsolute Maximum Ratingsâ 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
(VDD = +2.7V to +3.6V (MAX1253), VDD = +4.5V to +5.5V (MAX1254), VREF = +2.5V (MAX1253), VREF = +4.096V (MAX1254), fSCLK
= 10MHz (50% duty cycle), TA = TMIN to TMAX, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
DC ACCURACY
Resolution
RES
12
Bits
Integral Nonlinearity (Note 1)
Grade A
INL
Grade B
±1.0
LSB
±1.0
Differential Nonlinearity
DNL No missing codes overtemperature
±1.0
LSB
Offset Error
±4.0
LSB
Gain Error (Note 2)
External reference
Internal reference
±4.0
LSB
2.0
%FSR
Offset Error Tempco
±5
ppm/°C
Gain and Temperature Coefficient
External reference
Internal reference
±2
ppm/°C
±30
Channel-to-Channel Offset Matching
±0.1
LSB
VDD Monitor Accuracy
Internal reference
±2.5
%
DYNAMIC ACCURACY
(10kHz sine-wave input, 2.5VP-P (MAX1253), 4.096VP-P (MAX1254), 64ksps, fSCLK = 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
Conversion Time (Note 3)
tCONV Temp-sensor ref modes 01, 10
46
50.7
µs
Temp-sensor ref mode 00
73
80
Single-Channel Throughput
Manual trigger, voltage measurement
70
ksps
Power-Up Time
ANALOG INPUT (AIN0âAIN7)
tPU Internal reference (Note 4)
40
45
µs
Input Voltage Range (Note 5)
Common-Mode Range
Common-Mode Rejection
Unipolar, single-ended, or differential inputs
Bipolar, differential inputs
0
-VREF / 2
+VREF
V
+VREF / 2
Differentially configured inputs
0
VDD
V
Differentially configured inputs, VCM = 0 to VDD
-90
dB
2 _______________________________________________________________________________________
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