Rainbow Electronics MAX1109 - Manual (Page 6)

µA
MAX1108/MAX1109
Single-Supply, Low-Power,
2-Channel, Serial 8-Bit ADCs
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ELECTRICAL CHARACTERISTICS—MAX1109 (continued)
(V DD = +4.5V to +5.5V; unipolar input mode; COM = GND, f SCLK = 500kHz, external clock (50% duty cycle); 10 clocks/conversion
cycle (50ksps); 1µF capacitor at REF, external +4.096V reference at REF; T A = T MIN to T MAX ; unless otherwise noted. Typical values
are at T A = +25°C.)
CS = V
DD
CS = V
DD
pF 15 C OUT Three-State Output Capacitance
µA ±0.01 ±10 I L Three-State Leakage Current
Figure 1, C LOAD = 100pF
Figure 1, C LOAD = 100pF
Figure 2, C LOAD = 100pF
ns 240 t DV
CS Fall to Output Enable
ns
CONDITIONS
20 200 t DO SCLK Fall to Output Data Valid
ns 240 t TR
CS Rise to Output Disable
ns 100 t DS DIN to SCLK Setup Time
µs 1.0 t ACQ Acquisition Time
ns 0 t DH DIN to SCLK Hold Time
UNITS MIN TYP MAX SYMBOL PARAMETER
I SINK = 5mA
I SINK = 16mA
0.4
V 4.5 5 5.5 V DD Supply Voltage
V
0.8
V OL Output Low Voltage
V DD = 4.5V to 5.5V,
C L = 10pF,
full-scale input
130 250
Power down, V DD = 4.5V to 5.5V 0.5 2.5
95
External reference = +4.096V,
full-scale input, V
DD = 4.5V to 5.5V
mV ±0.4 ±4 PSR Power-Supply Rejection (Note 9)
V 0.2 V HYST Input Hysteresis
V 0.8 V IL Threshold Voltage Low
V 3 V IH Threshold Voltage High
µA ±1 I IH Input Current High
pF 15 C IN Input Capacitance
I SOURCE = 0.5mA V V DD - 0.5 V OH Output High Voltage
µA ±1 I IL Input Current Low
I DD µA Supply Current (Notes 2, 8)
Internal reference
External reference
POWER REQUIREMENTS
DIGITAL INPUTS (DIN, SCLK, and CS)
DIGITAL OUTPUT (DOUT)
TIMING CHARACTERISTICS (Figures 8, 9, and 10)