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MAX1183
Dual 10-Bit, 40Msps, 3V, Low-Power ADC with
Internal Reference and Parallel Outputs
_______________________________________________________________________________________
3
ELECTRICAL CHARACTERISTICS (continued)
(VDD = 3V, OVDD = 2.5V, 0.1F and 1.0F capacitors from REFP, REFN, and COM to GND, REFOUT connected to REFIN through a
10k resistor, VIN = 2VP-P (differential with respect to COM), CL = 10pF at digital outputs (Note 1), fCLK = 40MHz, TA = TMIN to TMAX,
unless otherwise noted. Typical values are at TA = +25°C.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Small-Signal Bandwidth
Input at -20dBFS, differential inputs
500
MHz
Full-Power Bandwidth
FPBW
Input at -0.5dBFS, differential inputs
400
MHz
Aperture Delay
tAD
1ns
Aperture Jitter
tAJ
2psRMS
Overdrive Recovery Time
For 1.5 x full-scale input
2
ns
Differential Gain
±1
%
Differential Phase
±0.25
Degrees
Output Noise
INA+ = INA- = INB+ = INB- = COM
0.2
LSBRMS
INTERNAL REFERENCE
Reference Output Voltage
REFOUT
2.048
±3%
V
Reference Temperature
Coefficient
TCREF
60
ppm/
°C
Load Regulation
1.25
mV/mA
BUFFERED EXTERNAL REFERENCE (VREFIN = 2.048V)
REFIN Input Voltage
VREFIN
2.048
V
Positive Reference Output
Voltage
VREFP
2.012
V
Negative Reference Output
Voltage
VREFN
0.988
V
Differential Reference Output
Voltage Range
VREF
VREF = VREFP - VREFN
0.95
1.024
1.10
V
REFIN Resistance
RREFIN
>50
M
Maximum REFP, COM
Source Current
ISOURCE
5mA
Maximum REFP, COM
Sink Current
ISINK
-250
A
Maximum REFN Source Current
ISOURCE
250
A
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,
RREFN
Measured between REFP and COM and
REFN and COM
4k
Differential Reference Input
Voltage Range
VREF
VREF = VREFP - VREFN
1.024
±10%
V
COM Input Voltage Range
VCOM
VDD/2
±10%
V
REFP Input Voltage
VREFP
VCOM +
VREF/2
V
REFN Input Voltage
VREFN
VCOM -
VREF/2
V
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