Manual

MAX1338
14-Bit, 4-Channel, Software-Programmable,
Multiranging, Simultaneous-Sampling ADC
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ELECTRICAL CHARACTERISTICS (continued)
(AV
DD
= DV
DD
= +5.0V, DRV
DD
= +3.0V, AGND = DGND = DRGND = 0, INTCLK/EXTCLK = AGND, f
CLK
= 5MHz, input range =
±10V, REFP2 = REFP1, REFN2 = REFN1, COM1 = COM2, 1.0nF from REFADC to AGND, 1.0µF and 0.1µF from COM1 to AGND,
0.1µF from REFP1 to AGND, 0.1µF from REFN1 to AGND, 1.0µF from REFP1 to REFN1. Typical values are at T
A
= +25°C. T
A
= T
MIN
to T
MAX
, unless otherwise noted.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX
UNITS
Range set bits = (0,0) -5 +5
Range set bits = (0,1)
-2.5 +2.5
Range set bits = (1,0)
-1.25 +1.25
Input Common-Mode Range
Range set bits = (1,1)
-0.625 +0.625
V
Input Resistance All settings
6.25
kΩ
Input Capacitance 15 pF
Small-Signal Bandwidth SSBW (Note 1) 1
MHz
Full-Power Bandwidth FPBW (Note 1) 75 kHz
INTERNAL REFERENCE (REFADC)
Output Voltage
2.475
2.5
2.525
V
Differential Reference Voltage
REFP–
REFN
2.5 V
Output-Voltage Temperature
Coefficient
50
ppm/°C
Load Regulation 5
V/mA
EXTERNAL REFERENCE
REFADC Voltage Input Range 2.0 2.5 3.0 V
REFADC Input Current (Note 3)
-250 +250
µA
REFADC Input Resistance R
REF
5kΩ
REFADC Input Capacitance 15 pF
TRACK/HOLD (T/H)
Aperture Delay t
AD
(Note 1) 16 ns
Aperture-Delay Matching
100
ps
Aperture Jitter t
AJ
(Note 1) 50
ps
RMS
CLOCK-SELECT INPUT (INTCLK/EXTCLK)
Input-Voltage High V
IH
0.7 x
AV
DD
V
Input-Voltage Low V
IL
0.3 x
AV
DD
V
DIGITAL INTERFACE AND CONTROL INPUTS (CS, RD, WR, CONVST, SHDN, CLK, STANDBY)
Input-Voltage High V
IH
0.7 x
DRV
DD
V
Input-Voltage Low V
IL
0.3 x
DRV
DD
V
Input Hysteresis 50 mV
Input Capacitance C
IN
15 pF