MAX12557
Dual, 65Msps, 14-Bit, IF/Baseband ADC
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ELECTRICAL CHARACTERISTICS (continued)
(VDD = 3.3V, OVDD = 2.0V, GND = 0, REFIN = REFOUT (internal reference), CL≈10pF at digital outputs, VIN = -0.5dBFS (differen-
tial), DIFFCLK/SECLK = OVDD, PD = GND, SHREF = GND, DIV2 = GND, DIV4 = GND, G/T= GND, fCLK = 65MHz, TA= -40°C to
+85°C, unless otherwise noted. Typical values are at TA= +25°C.) (Note 1)
PARAMETER
SYMBOL
CONDITIONS
MIN
TYP
MAX
UNITS
TIMING CHARACTERISTICS (Figure 5)
Clock Pulse-Width High tCH 7.7 ns
Clock Pulse-Width Low tCL 7.7 ns
Data-Valid Delay tDAV 5.4 ns
Data Setup Time Before Rising
Edge of DAV tSETUP (Note 6) 7.0 ns
Data Hold Time After Rising Edge
of DAV tHOLD (Note 6) 7.0 ns
Wake-Up Time from Power-Down
tWAKE VREFIN = 2.048V 10 ms
Note 1: Specifications ≥+25°C guaranteed by production test, <+25°C guaranteed by design and characterization.
Note 2: Guaranteed by design and characterization. Device tested for performance during product test.
Note 3: Specification guaranteed by production test for ≥+25°C.
Note 4: Two-tone intermodulation distortion measured with respect to a single-carrier amplitude, and not the peak-to-average input
power of both input tones.
Note 5: During power-down, D0A–D13A, D0B–D13B, DORA, DORB, and DAV are high impedance.
Note 6: Guaranteed by design and characterization.
Typical Operating Characteristics
(VDD = 3.3V, OVDD = 2.0V, GND = 0, REFIN = REFOUT (internal reference mode), CL≈5pF at digital outputs, VIN = -0.5dBFS,
DIFFCLK/SECLK= OVDD, PD = GND, G/T= GND, fCLK = 65MHz (50% duty cycle), TA= +25°C, unless otherwise noted.)
FFT PLOT (32,768-POINT DATA RECORD)
MAX12557 toc01
ANALOG INPUT FREQUENCY (MHz)
AMPLITUDE (dBFS)
-100
-80
-60
-40
-20
0
-120
HD3
fCLK = 65MHz
fIN = 3.00125MHz
AIN = -0.48dBFS
SNR = 74.45dB
SINAD = 74.33dB
THD = -90.06dBc
SFDR = 92.47dBc
HD2
-10
-30
-50
-70
-90
-110
30
2515 201050
FFT PLOT (32,768-POINT DATA RECORD)
MAX12557 toc02
ANALOG INPUT FREQUENCY (MHz)
AMPLITUDE (dBFS)
-100
-80
-60
-40
-20
0
-120
HD3
fCLK = 65.00352MHz
fIN = 32.40058MHz
AIN = -0.424dBFS
SNR = 74.77dB
SINAD = 74.62dB
THD = -87.22dBc
SFDR = 91.88dBc
HD2
-10
-30
-50
-70
-90
-110
30
2515 201050
FFT PLOT (32,768-POINT DATA RECORD)
MAX12557 toc03
ANALOG INPUT FREQUENCY (MHz)
AMPLITUDE (dBFS)
-100
-80
-60
-40
-20
0
-120
fCLK = 65.00352MHz
fIN = 70.00852MHz
AIN = -0.498dBFS
SNR = 74.41dB
SINAD = 74.00dB
THD = -84.50dBc
SFDR = 86.25dBc
HD2
-10
-30
-50
-70
-90
-110
HD3
30
2515 201050