Rainbow Electronics MAX1198 - Manual (Page 4)

MAX1198
Dual, 8-Bit, 100Msps, 3.3V, Low-Power ADC
with Internal Reference and Parallel Outputs
4 _______________________________________________________________________________________
PARAMETER SYMBOL CONDITIONS MIN T YP MAX UNITS
Differential Reference Output
Voltage Range
∆V
REF
∆V
REF = V REFP - V REFN
1.024
± 3%
V
Reference Temperature
Coefficient
TC REF
±100 ppm/°C
BUFFERED EXTERNAL REFERENCE (V REFIN = 2.048V)
Positive Reference Output
Voltage
V REFP (Note 5) 2.162 V
Negative Reference Output
Voltage
V REFN (Note 5) 1.138 V
Common-Mode Level V COM (Note 5)
V D D / 2
± 0.1
V
Differential Reference Output
Voltage Range
∆V
REF
∆V
REF
= V
REFP
- V
REFN
1.024
± 2%
V
REFIN Resistance R REFIN > 50 M Ω
Maximum REFP, COM Source
Current
I SOURCE 5 mA
Maximum REFP, COM Sink
Current
I SINK - 250 µA
Maximum REFN Source Current I SOURCE 250 µA
Maximum REFN Sink Current I SINK - 5 mA
U N B U F F ER ED EXT ER N A L R EF ER EN C E ( V RE F IN = AGN D , r efer ence vol tag e ap p l i ed to RE FP , RE FN , and C OM )
REFP, REFN Input Resistance
R
REFP
,
R REFN
Measured between REFP, COM, REFN,
and COM
4 k Ω
REFP, REFN, COM Input
Capacitance
C IN 15 pF
Differential Reference Input
Voltage Range
∆V
REF
∆V
REF = V REFP - V REFN
1.024
±10%
V
COM Input Voltage Range V COM
V D D / 2
±5%
V
REFP Input Voltage V REFP
V C OM +
∆V
RE F / 2
V
REFN Input Voltage V REFN
V C OM -
∆V
RE F / 2
V
DIGITAL INPUTS (CLK, PD, OE, SLEEP, T/B)
CLK
0.8 ×
V DD
Input High Threshold V IH
PD, OE, SLEEP, T/B
0.8 ×
OV DD
V
ELECTRICAL CHARACTERISTICS (continued)
(V DD = 3.3V, OV DD = 2.5V, 0.1µF and 2.2µF capacitors from REFP, REFN, and COM to GND; REFOUT connected to REFIN through a
10k Ω resistor, V
IN = 2V P-P (differential with respect to COM), C L = 10pF at digital outputs, f CLK = 100MHz, T A = T MIN to T MAX , unless
otherwise noted. ≥+25°C guaranteed by production test, <+25°C guaranteed by design and characterization. Typical values are at
T A = +25°C.)