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| MAX1032_11 Datasheet, PDF (4/32 Pages) Maxim Integrated Products – 8- and 4-Channel, ±3 x VREF Multirange Inputs, Serial 14-Bit ADCs | |||
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8- and 4-Channel, ±3 x VREF
Multirange Inputs, Serial 14-Bit ADCs
ELECTRICAL CHARACTERISTICS (continued)
(VAVDD1 = VAVDD2 = VDVDD = VDVDD0 = 5V, VAGND1 = VDGND = VDGNDO = VAGND2 = VAGND3 = 0V, fCLK = 3.5MHz (50% duty
cycle), external clock mode, VREF = 4.096V (external reference operation), REFCAP = AVDD1, maximum single-ended bipolar input
range (±3 x VREF), CDOUT = 50pF, CSSTRB = 50pF, TA = -40°C to +85°C, unless otherwise noted. Typical values are at TA = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN TYP MAX UNITS
INTERNAL REFERENCE (Bypass REFCAP with 0.1µF to AGND1 and REF with 1.0µF to AGND1)
Reference Output Voltage
Reference Temperature
Coefficient
VREF
TCREF
4.056 4.096 4.136
V
±30
ppm/°C
Reference Short-Circuit Current
IREFSC
REF shorted to AGND1
REF shorted to AVDD
10
mA
-1
Reference Load Regulation
IREF = 0 to 0.5mA
EXTERNAL REFERENCE (REFCAP = AVDD)
0.1
10
mV
Reference Input Voltage Range
REFCAP Buffer Disable
Threshold
VREF
VRCTH
(Note 5)
3.800
VAVDD1
- 0.4
4.136
V
VAVDD1
V
- 0.1
Reference Input Current
VREF = +4.096V, external clock mode,
external acquisition mode, internal clock
IREF
mode, or partial power-down mode
90
200
µA
Reference Input Resistance
RREF
VREF = +4.096V, full power-down mode
External clock mode, external acquisition
mode, internal clock mode, or partial
power-down mode
±0.1 ±10
20
45
kâ¦
DIGITAL INPUTS (DIN, SCLK, CS)
Input High Voltage
VIH
Full power-down mode
Input Low Voltage
VIL
Input Hysteresis
VHYST
Input Leakage Current
IIN
Input Capacitance
CIN
DIGITAL OUTPUTS (DOUT, SSTRB)
Output Low Voltage
VOL
Output High Voltage
DOUT Three-State Leakage
VOH
IDDO
VIN = 0V to VDVDDO
VDVDDO = 4.75V, ISINK = 10mA
VDVDDO = 2.7V, ISINK = 5mA
ISOURCE = 0.5mA
CS = DVDDO
40
0.7 x
V
VDVDDO
0.3 x
VDVDDO
V
0.2
V
-10
+10
µA
10
pF
VDVDDO
- 0.4
-10
0.4
V
0.4
V
+10
µA
4 _______________________________________________________________________________________
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