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MAX1034_12 Datasheet, PDF (4/31 Pages) Maxim Integrated Products – 8-/4-Channel, ±VREF Multirange Inputs,Serial 14-Bit ADCs
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8-/4-Channel, ±VREF Multirange Inputs,
Serial 14-Bit ADCs
ELECTRICAL CHARACTERISTICS (continued)
(VAVDD1 = VAVDD2 = VDVDD = VDVDDO = 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 (±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
INTERNAL REFERENCE (Bypass REFCAP with 0.1µF to AGND1 and REF with 1.0µF to AGND1)
Reference Output Voltage
VREF
4.056
Reference Temperature
Coefficient
TCREF
Reference Short-Circuit Current
IREFSC
REF shorted to AGND1
REF shorted to AVDD
Reference Load Regulation
IREF = 0 to 0.5mA
EXTERNAL REFERENCE (REFCAP = AVDD)
Reference Input Voltage Range
VREF
3.800
REFCAP Buffer Disable
Threshold
VRCTH (Note 5)
VAVDD1
- 0.4
TYP
4.096
±30
10
-1
0.1
MAX UNITS
4.136
V
ppm/°C
mA
10
mV
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
kΩ
DIGITAL INPUTS (DIN, SCLK, CS)
Input High Voltage
VIH
Full power-down mode
40
0.7 x
V D V DD O
V
Input Low Voltage
VIL
0.3 x
VDV DDO
V
Input Hysteresis
VHYST
0.2
V
Input Leakage Current
IIN
VIN = 0V to VDVDDO
-10
+10
µA
Input Capacitance
CIN
10
pF
DIGITAL OUTPUTS (DOUT, SSTRB)
Output Low Voltage
VOL
VDVDDO = 4.75V, ISINK = 10mA
VDVDDO = 2.7V, ISINK = 5mA
0.4
V
0.4
Output High Voltage
VOH
ISOURCE = 0.5mA
V D V DD O
V
- 0.4
DOUT Tri-State Leakage Current
IDDO CS = DVDDO
-10
+10
µA
POWER REQUIREMENTS (AVDD1 and AGND1, AVDD2 and AGND2, DVDD and DGND, DVDDO and DGNDO)
Analog Supply Voltage
VAVDD1
4.75
5.25
V
Digital Supply Voltage
VDVDD
4.75
5.25
V
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