MAX1082 Datasheet, PDF (7/24 Pages) Maxim Integrated Products – 300ksps/400ksps, Single-Supply, 4-Channel, Serial 10-Bit ADCs with Internal Reference

300ksps/400ksps, Single-Supply, 4-Channel,
Serial 10-Bit ADCs with Internal Reference
TIMING CHARACTERISTICS—MAX1083
(Figures 1, 2, 5, 6; V_DD1 = V_DD2 = +2.7V to +3.6V; T_A = T_MIN to T_MAX; unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
SCLK Period
t_CP
208
ns
SCLK Pulse Width High
t_CH
83
ns
SCLK Pulse Width Low
t_CL
83
ns
DIN to SCLK Setup
t_DS
45
ns
DIN to SCLK Hold
CS Fall to SCLK Rise Setup
SCLK Rise to CS Rise Hold
SCLK Rise to CS Fall ignore
CS Rise to SCLK Rise Ignore
t_DH
t_CSS
t_CSH
t_CSO
t_CS1
0
ns
45
ns
0
ns
45
ns
45
ns
SCLK Rise to DOUT Hold
t_DOH C_LOAD = 20pF
13
20
ns
SCLK Rise to SSTRB Hold
t_STH C_LOAD = 20pF
13
20
ns
SCLK Rise to DOUT Valid
t_DOV C_LOAD = 20pF
100
ns
SCLK Rise to SSTRB Valid
CS Rise to DOUT Disable
CS Rise to SSTRB Disable
CS Fall to DOUT Enable
CS Fall to SSTRB Enable
CS Pulse Width High
t_STV
t_DOD
t_STD
t_DOE
t_STE
t_CSW
C_LOAD = 20pF
C_LOAD = 20pF
C_LOAD = 20pF
C_LOAD = 20pF
C_LOAD = 20pF
100
ns
13
85
ns
13
85
ns
85
ns
85
ns
100
ns
Note 1: Tested at V_DD1 = V_DD2 = V_DD(MIN); COM = GND, unipolar single-ended input mode.
Note 2: Relative accuracy is the deviation of the analog value at any code from its theoretical value after the full-scale range has
been calibrated.
Note 3: Offset nulled.
Note 4: Ground the “on” channel; sine wave is applied to all “off” channels.
Note 5: Conversion time is defined as the number of clock cycles multiplied by the clock period; clock has 50% duty cycle.
Note 6: The common-mode range for the analog inputs (CH3–CH0 and COM) is from GND to V_DD1.
Note 7: External load should not change during conversion for specified accuracy.
Note 8: ADC performance is limited by the converter’s noise floor, typically 300µVp-p. An external reference below 2.5V
compromises the performance of the ADC.
Note 9: Electrical characteristics are guaranteed from V_DD1(MIN) = V_DD2(MIN) to V_DD1(MAX) = V_DD2(MAX). For operations beyond
this range, see Typical Operating Characteristics. For guaranteed specifications beyond the limits, contact the factory.
Note 10: AIN = midscale.Unipolar Mode. MAX1082 tested with 20pF on DOUT, 20pF on SSTRB, and f_SCLK = 6.4MHz, 0 to 5V.
MAX1083 tested with same loads, f_SCLK = 4.8MHz, 0 to 3V.
Note 11: SCLK = DIN = GND. CS = V_DD1.
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