MAX1448 查看數據表（PDF） - Maxim Integrated
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MAX1448 Datasheet PDF : 21 Pages
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10-Bit, 80Msps, Single 3.0V, Low-Power
ADC with Internal Reference
ELECTRICAL CHARACTERISTICS (continued)
(VDD = 3.0V, OVDD = 2V, 0.1µF and 1µF capacitors from REFP, REFN, and COM to GND, VREFIN = 2.048V, REFOUT connected to
REFIN through a 10kΩ resistor, VIN = 2VP-P (differential with respect to COM), CL = 10pF at digital outputs, fCLK = 83.3MHz, TA = TMIN
to TMAX, unless otherwise noted. ≥ +25°C guaranteed by production test, < +25°C guaranteed by design and characterization; typical
values are at TA = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
Maximum REFP, COM Sink
Current
ISINK
-250
µA
Maximum REFN Source Current ISOURCE
250
µA
Maximum REFN Sink Current
ISINK
-5
mA
UNBUFFERED EXTERNAL REFERENCE (VREFIN = AGND, reference voltage applied to REFP, REFN, and COM )
REFP, REFN Input Resistance
RREFP, Measured between REFP and COM and
RREFN REFN and COM
4
kΩ
REFP, REFN, COM Input
Capacitance
CIN
15
pF
Differential Reference Input
Voltage Range
COM Input Voltage Range
REFP Input Voltage
REFN Input Voltage
DIGITAL INPUTS (CLK, PD, OE)
Input High Threshold
Input Low Threshold
Input Capacitance
Input Hysteresis
Input Leakage
DIGITAL OUTPUTS (D9–D0)
Output Voltage Low
Output Voltage High
Three-State Leakage Current
∆VREF ∆VREF = VREFP - VREFN
VCOM
VREFP
VREFN
CLK
VIH
PD, OE
VIL
CIN
VHYST
IIH
IIL
CLK
PD, OE
VIH = VDD = 0VDD
VIL = 0
VOL
VOH
ILEAK
ISINK = 200µA
ISOURCE = 200µA
OE = OVDD
1.024
± 10%
V
VDD / 2
V
± 10%
VCOM+
∆VREF / 2
V
VCOM -
V
∆VREF / 2
0.8 x
VDD
V
0.8 x
OVDD
0.2 x
OVDD
V
0.2 x
OVDD
5
pF
0.1
V
±5
µA
±5
OVDD -
0.2
0.2
V
V
±10
µA
Three-State Output Capacitance COUT OE = OVDD
5
pF
4 _______________________________________________________________________________________
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