
MAX1197
Dual, 8-Bit, 60Msps, 3V, Low-Power ADC with
Internal Reference and Parallel Outputs
4
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ELECTRICAL CHARACTERISTICS (continued)
(VDD = OVDD = 3V, 0.1F and 2.2F 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, fCLK = 60MHz, TA = TMIN to TMAX, unless otherwise
noted.
≥ +25°C guaranteed by production test, < +25°C guaranteed by design and characterization. Typical values are at TA = +25°C.)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
Differential Reference Output
Voltage Range
VREF
VREF = VREFP - VREFN
1.024
±3%
V
Reference Temperature
Coefficient
TCREF
±100
ppm/°C
BUFFERED EXTERNAL REFERENCE (VREFIN = 2.048V)
Positive Reference Output
Voltage
VREFP
(Note 5)
2.012
V
Negative Reference Output
Voltage
VREFN
(Note 5)
0.988
V
Common-Mode Level
VCOM
(Note 5)
VDD / 2
±0.1
V
Differential Reference Output
Voltage Range
VREF
VREF = VREFP - VREFN
1.024
±2%
V
REFIN Resistance
RREFIN
750
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
-5mA
UNBUFFERED EXTERNAL REFERENCE (VREFIN = AGND, reference voltage applied to REFP, REFN, and COM)
REFP, REFN Input Resistance
RREFP,
RREFN
Measured between REFP, COM, REFN,
and COM
4k
REFP, REFN, COM Input
Capacitance
CIN
15
pF
Differential Reference Input
Voltage Range
VREF
VREF = VREFP - VREFN
1.024
±10%
V
COM Input Voltage Range
VCOM
VDD / 2
±5%
V
REFP Input Voltage
VREFP
VCOM +
VREF / 2
V
REFN Input Voltage
VREFN
VCOM -
VREF / 2
V
DIGITAL INPUTS (CLK, PD,
OE, SLEEP, T/B)
CLK
0.8
×
VDD
Input High Threshold
VIH
PD,
OE, SLEEP, T/B
0.8
×
OVDD
V