Rainbow Electronics MAX1093 - Manual (Page 4)

MAX1091/MAX1093
250ksps, +3V, 8-/4-Channel, 10-Bit ADCs
with +2.5V Reference and Parallel Interface
4 _______________________________________________________________________________________
TIMING CHARACTERISTICS
(V DD = V LOGIC = +2.7V to +3.6V, COM = GND, REFADJ = V DD , V REF = +2.5V, 4.7µF capacitor at REF pin, f CLK = 4.8MHz (50% duty
cycle), T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.)
CONDITIONS UNITS MIN TYP MAX SYMBOL PARAMETER
Shutdown mode
Standby mode
Operating mode,
f
SAMPLE = 250ksps
µA 2 10
0.9 1.2
mA
2.3 2.6
V 2.7 3.6 V DD Analog Supply Voltage
150
ELECTRICAL CHARACTERISTICS (continued)
(V DD = V LOGIC = +2.7V to +3.6V, COM = GND, REFADJ = V DD , V REF = +2.5V, 4.7µF capacitor at REF pin, f CLK = 4.8MHz (50% duty
cycle), T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.)
V LOGIC Current I LOGIC C L = 20pF
2 10
µA
Power-Supply Rejection PSR V DD = 3V ±10%, full-scale input ±0.4 ±0.7 mV
f SAMPLE = 250ksps
Not converting
V 1.8 V DD + 0.3 V LOGIC Digital Supply Voltage
WR to CLK Fall Setup Time t CWS 40 ns
ns CLK Pulse Width High
ns CLK Period
t CH
40
t CP 208
CLK Pulse Width Low t CL 40 ns
Data Valid to WR Rise Time t DS 40 ns
WR Rise to Data Valid Hold Time t DH
0 ns
CLK Fall to WR Hold Time t CWH 40 ns
CS to CLK or WR
Setup Time
t CSWS 60 ns
CLK or WR to CS
Hold Time
t CSWH 0 ns
CS Pulse Width t CS 100 ns
WR Pulse Width (Note 8) t WR 60 ns
t
TC
20 100 ns C
LOAD
= 20pF, Figure 1
PARAMETER SYMBOL MIN TYP MAX UNITS CONDITIONS
CS Rise to Output Disable
POWER REQUIREMENTS
Internal reference
Internal reference
External reference
External reference
1.9 2.3
0.5 0.8
I
DD
Positive Supply Current