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MAX11634 Datasheet(PDF) 4 Page - Maxim Integrated Products

Part No. MAX11634
Description  12-Bit, 300ksps ADCs with Differential
Download  24 Pages
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Maker  MAXIM [Maxim Integrated Products]
Homepage  http://www.maxim-ic.com
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MAX11634 Datasheet(HTML) 4 Page - Maxim Integrated Products

 
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12-Bit, 300ksps ADCs with Differential
Track/Hold, and Internal Reference
4
_______________________________________________________________________________________
Note 2:
Limits at TA = -40°C are guaranteed by design and not production tested.
Note 3:
Tested at VDD = 3V (MAX11635/MAX11637); VDD = 5V (MAX11634/MAX11636), unipolar input mode.
Note 4:
Offset nulled.
Note 5:
Time for reference to power up and settle to within 1 LSB.
Note 6:
Conversion time is defined as the number of clock cycles multiplied by the clock period; clock has 50% duty cycle.
Note 7:
The operational input voltage range for each individual input of a differentially configured pair is from GND to VDD. The
operational input voltage difference is from -VREF/2 to +VREF/2.
Note 8:
See Figure 3 (Equivalent Input Circuit) and the Sampling Error vs. Source Impedance curve in the
Typical Operating
Characteristics section.
Note 9:
When CNVST is configured as a digital input, do not apply a voltage between VIL and VIH.
Note 10: Supply current is specified depending on whether an internal or external reference is used for voltage conversions.
Temperature measurements always use the internal reference.
ELECTRICAL CHARACTERISTICS (continued)
(VDD = 2.7V to 3.6V (MAX11635/MAX11637), VDD = 4.75V to 5.25V (MAX11634/MAX11636), fSAMPLE = 300kHz, fSCLK = 4.8MHz
(external clock, 50% duty cycle), VREF = 2.5V (MAX11635/MAX11637), VREF = 4.096V (MAX11634/MAX11636) TA = TMIN to TMAX,
unless otherwise noted. Typical values are at TA = +25°C.) (Note 2)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Input Leakage Current
IIN
VIN = 0V or VDD
±0.01
±1.0
µA
Input Capacitance
CIN
15
pF
DIGITAL OUTPUTS (DOUT,
EOC)
ISINK = 2mA
0.4
Output Voltage Low
VOL
ISINK = 4mA
0.8
V
Output Voltage High
VOH
ISOURCE = 1.5mA
VDD - 0.5
V
Three-State Leakage Current
IL
CS = VDD
±0.05
±1
µA
Three-State Output Capacitance
COUT
CS = VDD
15
pF
POWER REQUIREMENTS
MAX11634/MAX11636
4.75
5.25
Supply Voltage
VDD
MAX11635/MAX11637
2.7
3.6
V
fSAMPLE = 300ksps
1750
2000
fSAMPLE = 0, REF on
1000
1200
Internal
reference
Shutdown
0.2
5
fSAMPLE = 300ksps
1050
1200
MAX11635/MAX11637
Supply Current (Note 10)
IDD
External
reference
Shutdown
0.2
5
µA
fSAMPLE = 300ksps
2300
2550
fSAMPLE = 0, REF on
1050
1350
Internal
reference
Shutdown
0.2
5
fSAMPLE = 300ksps
1500
1700
MAX11634/MAX11636
Supply Current (Note 10)
IDD
External
reference
Shutdown
0.2
5
µA
VDD = 2.7V to 3.6V, full-scale input
±0.2
±1
Power-Supply Rejection
PSR
VDD = 4.75V to 5.25V, full-scale input
±0.2
±1.4
mV


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