Rainbow Electronics MAX1181 - Manual (Page 3)

MAX1181
Dual 10-Bit, 80Msps, +3V, Low-Power ADC with
Internal Reference and Parallel Outputs
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ELECTRICAL CHARACTERISTICS (continued)
(V DD = +3V, OV DD = +2.5V; 0.1µF and 1.0µF capacitors from REFP, REFN, and COM to GND; REFOUT connected to REFIN through
a 10k Ω resistor, V
IN = 2V p-p (differential w.r.t. COM), C L = 10pF at digital outputs (Note 5), f CLK = 83.333MHz (50% duty cycle), T A =
T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Intermodulation Distortion
(first five odd-order IMDs)
IMD
f INA or B = 38.1546MHz at -6.5dB FS
f INA or B = 41.9532MHz at -6.5dB FS
(Note 2)
-73.5 dBc
f INA or B = 7.47MHz, T A = +25 °C
-73 -64
f INA or B = 20MHz, T A = +25 °C -70 -63
Total Harmonic Distortion
(first five harmonics)
THD
f INA or B = 39.9MHz (Note 1) -70
dBc
Small-Signal Bandwidth Input at -20dB FS, differential inputs 500 MHz
Full-Power Bandwidth FPBW Input at -0.5dB FS, differential inputs 400 MHz
Aperture Delay t AD 1 ns
Aperture Jitter t AJ 2 ps RMS
Overdrive Recovery Time For 1.5 x full-scale input 2 ns
Differential Gain ±1 %
Differential Phase ±0.25 degrees
Output Noise INA+ = INA- = INB+ = INB- = COM 0.2 LSB
RMS
INTERNAL REFERENCE
Reference Output Voltage REFOUT
2.048
±3%
V
Reference Temperature
Coefficient
TC REF 60 ppm/ °C
Load Regulation 1.25 mV/mA
BUFFERED EXTERNAL REFERENCE (V REFIN =+2.048V)
REFIN Input Voltage V REFIN 2.048 V
Positive Reference Output
Voltage
V REFP 2.012 V
Negative Reference Output
Voltage
V REFN 0.988 V
Differential Reference Output
Voltage Range
∆V
REF
∆V
REF
= V
REFP
- V
REFN
0.98 1.024 1.07 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
UNBUFFERED EXTERNAL REFERENCE (V REFIN = AGND, reference voltage applied to REFP, REFN and COM )
REFP, REFN Input Resistance
R REFP,
R REFN
Measured between REFP and COM and
REFN and COM
4 k Ω