Rainbow Electronics MAX1444 - Manual (Page 4)

MAX1444
10-Bit, 40Msps, +3.0V, Low-Power
ADC with Internal Reference
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PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
Input Hysteresis V HYST 0.1 V
I IH V IH = V DD = OV DD
±5
Input Leakage
I IL V IL = 0 ±5
µA
Input Capacitance C IN 5 pF
DIGITAL OUTPUTS (D9–D0)
Output Voltage Low V OL I SINK = 200 µA 0.2 V
Output Voltage High V OH I SOURCE = 200 µA
OV DD
- 0.2
V
Three-State Leakage Current I LEAK
OE = OV
DD
±10 µA
Three-State Output Capacitance C OUT
OE = OV
DD 5 pF
POWER REQUIREMENTS
Analog Supply Voltage V DD 2.7 3.0 3.6 V
Output Supply Voltage OV DD 1.7 3.0 3.6 V
Operating, f IN = 19.91MHz at -0.5dBFS 19 25 mA
Analog Supply Current I VDD
Shutdown, clock idle, PD = OE = OV
DD 4 15 µA
Operating, f IN = 19.91MHz at -0.5dBFS 4.5 mA
Output Supply Current I OVDD
Shutdown, clock idle, PD = OE = OV
DD 1 10 µA
Offset ±0.1 mV/V
Power Supply Rejection PSRR
Gain ±0.1 %/V
TIMING CHARACTERISTICS
CLK Rise to Output Data Valid t DO Figure 6, (Note 3) 5 8 ns
OE Fall to Output Enable t ENABLE Figure 5 10 ns
OE Rise to Output Disable t DISABLE Figure 5 15 ns
CLK Pulse Width High t CH Figure 6, clock period 25ns 12.5 ±3.8 ns
CLK Pulse Width Low t CL Figure 6, clock period 25ns 12.5 ±3.8 ns
Wake-up Time t WAKE (Note 4) 1.7 µs
ELECTRICAL CHARACTERISTICS (continued)
(V DD = +3.0V, OV DD = +2.7V; 0.1µF and 1.0µF capacitors from REFP, REFN, and COM to GND; V REFIN = +2.048V, REFOUT con-
nected to REFIN through a 10k Ω resistor, V
IN = 2V p-p (differential w.r.t. COM), C L = 10pF at digital outputs, f CLK = 40MHz (50% duty
cycle), T A = T MIN to T MAX , unless otherwise noted. Typical values are at T A = +25°C.)
Note 1: SNR, SINAD, THD, SFDR, and HD3 are based on an analog input voltage of -0.5dBFS referenced to a +1.024V full-scale
input voltage range.
Note 2: Intermodulation distortion is the total power of the intermodulation products relative to the individual carrier. This number is
6dB better if referenced to the two-tone envelope.
Note 3: Digital outputs settle to V IH / V IL .
Note 4: REFIN is driven externally. REFP, COM, and REFN are left floating while powered down.