Rainbow Electronics MAX1068 - Manual (Page 3)

MAX1067/MAX1068
Multichannel, 14-Bit, 200ksps Analog-to-Digital
Converters
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ELECTRICAL CHARACTERISTICS (continued)
(AV DD = DV DD = +4.75V to +5.25V, f SCLK = 4.8MHz external clock (50% duty cycle), 24 clocks/conversion (200ksps), external V REF
= +4.096V, 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
Acquisition Time t ACQ (Note 6) 729 ns
External clock, data transfer and conversion 0.1 4.8
Serial Clock Frequency f
SCLK
External clock, data transfer only 9
MHz
Internal Clock Frequency f INTCLK Internal clock 3.2 4.0 MHz
Aperture Delay t AD 15 ns
Aperture Jitter t AJ <50 ps
8-bit-wide data-transfer mode 4.17 200.00
16-bit-wide data-transfer mode 3.125 150.000
Internal clock, single conversion, 8-bit-wide
data-transfer mode
89
Internal clock, single conversion, 16-bit-
wide data-transfer mode
68
Internal clock, scan mode, 8-bit-wide data-
transfer mode (four conversions)
103
Sample Rate (Note 7) f S
External clock, scan mode, 16-bit-wide
data-transfer mode (four conversions)
82
ksps
Duty Cycle 45 55 %
ANALOG INPUT (AIN_)
Input Range V
AIN
_ 0 V
REF
V
Input Capacitance C AIN _ 45 pF
EXTERNAL REFERENCE
Input Voltage Range V REF 3.8 AV DD V
V AIN _ = 0 110
SCLK idle 0.1 Input Current I REF
CS = DV
DD , SCLK idle 0.1
µA
INTERNAL REFERENCE
Reference Voltage V REFIN 4.056 4.096 4.136 V
Reference Short-Circuit Current I REFSC 13 mA
Reference Temperature
Coefficient
±25 ppm/°C
Reference Wake-Up Time t RWAKE V REF = 0 5 ms