MAX12528 Datasheet, PDF (7/28 Pages) Maxim Integrated Products – Dual, 80Msps, 12-Bit, IF/Baseband ADC

Dual, 80Msps, 12-Bit, IF/Baseband ADC
ELECTRICAL CHARACTERISTICS (continued)
(V_DD = 3.3V, OV_DD = 2.0V, GND = 0, REFIN = REFOUT (internal reference), C_L ≈ 10pF at digital outputs, A_IN = -0.5dBFS (differen-
tial), DIFFCLK/SECLK = OV_DD, PD = GND, SHREF = GND, DIV2 = GND, DIV4 = GND, G/T = GND, f_CLK = 80MHz, T_A = -40°C to
+85°C, unless otherwise noted. Typical values are at T_A = +25°C.) (Note 1)
PARAMETER
SYMBOL
TIMING CHARACTERISTICS (Figure 5)
Clock Pulse-Width High
t_CH
Clock Pulse-Width Low
t_CL
Data-Valid Delay
t_DAV
Data Setup Time Before Rising
Edge of DAV
t_SETUP
(Note 4)
CONDITIONS
MIN TYP MAX UNITS
6.2
ns
6.2
ns
5.3
ns
5.0
ns
Data Hold Time After Rising Edge
of DAV
t_HOLD (Note 4)
5.5
ns
Wake-Up Time from Power-Down
t_WAKE V_REFIN = 2.048V
10
ms
Note 1: Specifications ≥+25°C guaranteed by production test, <+25°C guaranteed by design and characterization.
Note 2: 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 3: During power-down, D0A–D11A, D0B–D11B, DORA, DORB, and DAV are high impedance.
Note 4: Guaranteed by design and characterization.
Typical Operating Characteristics
(V_DD = 3.3V, OV_DD = 2.0V, GND = 0, REFIN = REFOUT (internal reference mode), C_L ≈ 5pF at digital outputs, A_IN = -0.5dBFS,
DIFFCLK/SECLK = OV_DD, PD = GND, G/T = GND, f_CLK = 80MHz (50% duty cycle), T_A = +25°C, unless otherwise noted.)
FFT PLOT (16,384-POINT DATA RECORD)
0
-10
-20
f_IN
-30
-40
-50
-60
HD2
-70
f_CLK = 80MHz
f_IN = 2.99926758MHz
A_IN = -0.46dBFS
SNR = 70.9dB
SINAD = 70.7dB
THD = -84dBc
SFDR = 85.5dBc
HD2 = -86dBc
HD3 = -101dBc
-80
HD3
-90
-100
-110
-120
0 5 10 15 20 25 30 35 40
ANALOG INPUT FREQUENCY (MHz)
FFT PLOT (32,768-POINT DATA RECORD)
0
-10
f_CLK = 80MHz
f_IN = 39.5092773MHz
f_IN
-20 _{AIN = -0.482dBFS}
-30 SNR = 71.1dB
-40 ^{SINAD = 70.5dB}
THD = -79.1dBc
-50 _{SFDR = 82.7dBc}
-60 HD2 = -87.6dBc
-70 ^{HD3 = -82.7dBc}
-80
HD2
HD3
-90
-100
-110
-120
0 5 10 15 20 25 30 35 40
ANALOG INPUT FREQUENCY (MHz)
FFT PLOT (32,768-POINT DATA RECORD)
0
-10
f_CLK = 80MHz
f_IN = 69.8999023MHz
-20
-30
f_IN
A_IN = -0.437dBFS
SNR = 71dB
-40
SINAD = 69.2dB
THD = -73.9dBc
-50
SFDR = 74.6dBc
-60
HD2 = -94.6dBc
-70
HD3 = -74.6dBc
-80
HD2
HD3
-90
-100
-110
-120
0 5 10 15 20 25 30 35 40
ANALOG INPUT FREQUENCY (MHz)
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