Rainbow Electronics MAX1314 - Manual (Page 5)

MAX1304–MAX1306/MAX1308–MAX1310/MAX1312–MAX1314
8-/4-/2-Channel, 12-Bit, Simultaneous-Sampling ADCs
with ±10V, ±5V, and 0 to +5V Analog Input Ranges
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PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
MAX1304/MAX1305/MAX1306,
all channels selected
1.3 2.6
MAX1308/MAX1309/MAX1310,
all channels selected
1.3 2.6
Digital Supply Current
(C
LOAD = 100pF) (Note 7)
I DVDD
MAX1312/MAX1313/MAX1314,
all channels selected
1.3 2.6
mA
I AVDD SHDN = DV DD , V CH = float 0.6 10 Shutdown Current
(Note 8)
I DVDD SHDN = DV DD , RD = WR = high 0.02 1
µA
Power-Supply Rejection Ratio PSRR AV DD = +4.75V to +5.25V 50 dB
TIMING CHARACTERISTICS (Figure 1)
Internal clock, Figure 7 800 900 ns
Time to First Conversion Result t CONV
External clock, Figure 8 12
CLK
Cycles
Internal clock, Figure 7 200 225 ns
Time to Subsequent Conversions t NEXT
External clock, Figure 8 3
CLK
Cycles
CONVST Pulse-Width Low
(Acquisition Time)
t ACQ (Note 9) Figures 6–10 0.1 1000.0 µs
CS Pulse Width t CS Figure 6 30 ns
RD Pulse-Width Low t
RDL
Figures 7, 8, 9 30 ns
RD Pulse-Width High t RDH Figures 7, 8, 9 30 ns
WR Pulse-Width Low t WRL Figure 6 30 ns
CS to WR t CTW Figure 6 (Note 10) ns
WR to CS t WTC Figure 6 (Note 10) ns
CS to RD t CTR Figures 7, 8, 9 (Note 10) ns
RD to CS t RTC Figures 7, 8, 9 (Note 10) ns
Data Access Time
(RD Low to Valid Data)
t ACC Figures 7, 8, 9 30 ns
Bus Relinquish Time (RD High) t REQ Figures 7, 8, 9 5 30 ns
CLK Rise to EOC Delay t EOCD Figure 8 20 ns
CLK Rise to EOLC Fall Delay t EOLCD Figure 8 20 ns
CONVST Fall to EOLC Rise Delay t CVEOLCD Figures 7, 8, 9 20 ns
Internal clock, Figure 7 50 ns
EOC Pulse Width t EOC
External clock, Figure 8 1
CLK
Cycle
ELECTRICAL CHARACTERISTICS (continued)
(AV DD = +5V, DV DD = +3V, AGND = DGND = 0, V REF = V REFMS = +2.5V (external reference), C REF = C REFMS = 0.1µF, C REF+ =
C REF- = 0.1µF, C REF+-to-REF- = 2.2µF || 0.1µF, C COM = 2.2µF || 0.1µF, C MSV = 2.2µF || 0.1µF (unipolar devices), MSV = AGND (bipo-
lar devices), f CLK = 16.67MHz 50% duty cycle, INTCLK/EXTCLK = AGND (external clock), SHDN = DGND, T A = T MIN to T MAX ,
unless otherwise noted. Typical values are at T A = +25°C. See Figures 3 and 4.)