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| MAX1191 Datasheet, PDF (4/27 Pages) Maxim Integrated Products – Ultra-Low-Power, 7.5Msps, Dual 8-Bit ADC | |||
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Ultra-Low-Power, 7.5Msps, Dual 8-Bit ADC
ELECTRICAL CHARACTERISTICS (continued)
(VDD = 3.0V, OVDD = 1.8V, VREFIN = VDD (internal reference), CL â 10pF at digital outputs, fCLK = 7.5MHz, CREFP = CREFN = CCOM
= 0.33µF, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
Maximum REFP/REFN/COM Sink
Current
ISINK
REFIN Input Resistance
REFIN Input Current
UNBUFFERED EXTERNAL REFERENCE (REFIN = GND, VREFP, VREFN, and VCOM are applied
REFP Input Voltage
VREFP - VCOM
REFN Input Voltage
VREFN - VCOM
COM Input Voltage
VCOM
Differential Reference Input
Voltage
VREF VREFP - VREFN
REFP Input Resistance
RREFP
REFN Input Resistance
RREFN
DIGITAL INPUTS (CLK, PD0, PD1)
Measured between REFP and COM
Measured between REFN and COM
Input High Threshold
CLK
VIH
PD0, PD1
0.7 x
VDD
0.7 x
OVDD
Input Low Threshold
CLK
VIL
PD0, PD1
Input Hysteresis
Digital Input Leakage Current
Digital Input Capacitance
DIGITAL OUTPUTS (D7âD0, A/B)
VHYST
DIIN
DCIN
CLK at GND or VDD
PD0 and PD1 at OGND or OVDD
Output Voltage Low
VOL ISINK = 200µA
Output Voltage High
Tri-State Leakage Current
Tri-State Output Capacitance
POWER REQUIREMENTS
Analog Supply Voltage
Digital Output Supply Voltage
VOH ISOURCE = 200µA
ILEAK
COUT
VDD
OVDD
0.8 x
OVDD
2.7
1.8
TYP
2
>500
-0.7
0.256
-0.256
VDD / 2
0.512
4
4
0.1
5
5
3.0
MAX
0.3 x
VDD
0.3 x
OVDD
±5
±5
0.2 x
OVDD
±5
3.6
VDD
UNITS
mA
kâ¦
µA
V
V
V
V
kâ¦
kâ¦
V
V
V
µA
pF
V
V
µA
pF
V
V
4 _______________________________________________________________________________________
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