Rainbow Electronics MAX1249 - Manual (Page 4)

V DD = 5.25V
MAX1248/MAX1249
+2.7V to +5.25V, Low-Power, 4-Channel,
Serial 10-Bit ADCs in QSOP-16
4 _______________________________________________________________________________________
1.2 2.0
3.5 15
Operating mode,
full-scale input (Note 11)
30 70 Fast power-down (MAX1248)
nA ±100
SHDN Maximum Allowed
Leakage, Mid Input
V V
DD
/ 2 V
FLT
SHDN Voltage, Floating
SHDN = FLOAT
SHDN = FLOAT
UNITS MIN TYP MAX SYMBOL PARAMETER
µA 1.2 10
I DD
CONDITIONS
Positive Supply Current
mA
1.6 3.0
µA ±0.01 ±10 I
L
Three-State Leakage Current
V V DD - 0.5 V OH Output Voltage High
V
0.8
V OL Output Voltage Low
0.4
V 2.70 5.25 V DD Positive Supply Voltage
pF 15 C OUT Three-State Output Capacitance
Full power-down
CS = V
DD (Note 10)
CS = V
DD
I SOURCE = 0.5mA
I
SINK
= 16mA
I
SINK
= 5mA
ELECTRICAL CHARACTERISTICS (continued)
(V
DD
= +2.7V to +5.25V; COM = 0V; f
SCLK
= 2.0MHz, external clock (50% duty cycle); 15 clocks/conversion cycle (133ksps);
MAX1248—4.7µF capacitor at VREF pin; MAX1249—external reference; VREF = 2.500V applied to VREF pin, T
A
= T
MIN
to T
MAX
,
unless otherwise noted.)
mV ±0.3 PSR Supply Rejection (Note 12)
V
DD
= 2.7V to 5.25V, full-scale input,
external reference = 2.500V
DIGITAL OUTPUTS (DOUT, SSTRB)
POWER REQUIREMENTS
I
DD
V DD = 5.25V
V DD = 3.6V
V DD = 5.25V
V DD = 3.6V