MAX1448 Datasheet, PDF (4/21 Pages) Maxim Integrated Products – 10-Bit, 80Msps, Single 3.0V, Low-Power ADC with Internal Reference

10-Bit, 80Msps, Single 3.0V, Low-Power
ADC with Internal Reference
ELECTRICAL CHARACTERISTICS (continued)
(V_DD = 3.0V, OV_DD = 2V, 0.1µF and 1µF capacitors from REFP, REFN, and COM to GND, V_REFIN = 2.048V, REFOUT connected to
REFIN through a 10kΩ resistor, V_IN = 2V_P-P (differential with respect to COM), C_L = 10pF at digital outputs, f_CLK = 83.3MHz, T_A = T_MIN
to T_MAX, unless otherwise noted. ≥ +25°C guaranteed by production test, < +25°C guaranteed by design and characterization; typical
values are at T_A = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX
Maximum REFP, COM Sink
Current
I_SINK
-250
Maximum REFN Source Current I_SOURCE
250
Maximum REFN Sink Current
I_SINK
-5
UNBUFFERED EXTERNAL REFERENCE (V_REFIN = AGND, reference voltage applied to REFP, REFN, and COM )
REFP, REFN Input Resistance
R_REFP, Measured between REFP and COM and
4
R_REFN REFN and COM
REFP, REFN, COM Input
Capacitance
C_IN
15
Differential Reference Input
Voltage Range
COM Input Voltage Range
REFP Input Voltage
REFN Input Voltage
DIGITAL INPUTS (CLK, PD, OE)
∆V_REF ∆V_REF = V_REFP - V_REFN
V_COM
V_REFP
V_REFN
1.024
± 10%
V_DD / 2
± 10%
V_COM+
∆V_REF / 2
V_COM -
∆V_REF / 2
Input High Threshold
CLK
V_IH
PD, OE
0.8 x
V_DD
0.8 x
OV_DD
Input Low Threshold
Input Hysteresis
Input Leakage
Input Low Threshold
Input Hysteresis
Input Leakage
Input Capacitance
V_IL
V_HYST
I_IH
I_IL
V_IL
V_HYST
I_IH
I_IL
C_IN
CLK
PD, OE
V_IH = V_DD = OV_DD
V_IL = 0
CLK
PD, OE
V_IH = V_DD = OV_DD
V_IL = 0
0.2 x
V_DD
0.2 x
OV_DD
0.1
±5
±5
0.2 x
V_DD
0.2 x
OV_DD
0.1
±5
±5
5
UNITS
µA
µA
mA
kΩ
pF
V
V
V
V
V
V
V
µA
V
V
µA
pF
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