Rainbow Electronics MAX1031 - Manual (Page 3)

MAX1027/MAX1029/MAX1031
10-Bit 300ksps ADCs with FIFO,
Temp Sensor, Internal Reference
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ELECTRICAL CHARACTERISTICS (continued)
(V DD = +2.7V to +3.6V, f SAMPLE = 300kHz, f SCLK = 4.8MHz (50% duty cycle), V REF = 2.5V, 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
CONVERSION RATE
External reference 0.8
Power-Up Time t PU
Internal reference (Note 3) 65
µs
Acquisition Time t ACQ 0.6 µs
Internally clocked 3.5
Conversion Time t CONV
Externally clocked (Note 4) 2.7
µs
Externally clocked conversion 0.1 4.8
External Clock Frequency f SCLK
Data I/O 10
MHz
SCLK Duty Cycle 40 60 %
Aperture Delay 30 ns
Aperture Jitter <50 ps
ANALOG INPUT
Unipolar 0 V REF
Input Voltage Range
Bipolar (Note 5) - V RE F / 2 V RE F / 2
V
Input Leakage Current V IN = V DD ±0.01 ±1 µA
Input Capacitance During acquisition time (Note 6) 24 pF
INTERNAL TEMPERATURE SENSOR
Grade A, T
A
= +25 °C ±0.3
Grade A, T A = -20 °C to +85°C ±0.5 ±1
Grade A, T A = T MIN to T MAX ±0.75 ±1.5
Grade B, T A = +25 °C ±0.7
Measurement Error (Note 7)
Grade B, T A = T MIN to T MAX ±1.2 ±2.5
°C
Temperature Measurement Noise 0.1 °C
RMS
Temperature Resolution 1/8 °C
Power-Supply Rejection 0.3 °C/V
INTERNAL REFERENCE
REF Output Voltage 2.48 2.50 2.52 V
Grade A ±8
REF Temperature Coefficient TC REF
Grade B ±30
ppm/°C
Output Resistance 6.5 k Ω
REF Output Noise 200 µV RMS
REF Power-Supply Rejection PSRR -70 dB
EXTERNAL REFERENCE INPUT
REF- Input Voltage Range V REF- 0 500 mV
REF+ Input Voltage Range V REF+ 1.0 V DD + 50mV V
V REF+ = 2.5V, f SAMPLE = 300ksps 40 100
REF+ Input Current I REF+
V REF+ = 2.5V, f SAMPLE = 0 ±0.1 ±5
µA