Rainbow Electronics MAX109 - Manual (Page 7)

MAX109
8-Bit, 2.2Gsps ADC with Track/Hold Amplifier
and 1:4 Demultiplexed LVDS Outputs
_______________________________________________________________________________________ 7
AC ELECTRICAL CHARACTERISTICS (continued)
(V CC A = V CC I = V CC D = 5V, V CC O = 3.3V, V EE = -5V, GNDA = GNDI = GNDD = GNDO = GNDR = 0V, f CLK = 2.2Gsps, analog input
amplitude at -1dBFS differential, clock input amplitude 400mV P-P differential, digital output pins differential R L = 100Ω. Typical values
are at T A = +25°C, unless otherwise noted.)
PARAMETER SYMBOL CONDITIONS MIN TYP MAX UNITS
LVDS Output Rise Time t RDATA 20% to 80%, C L < 2pF 500 ps
LVDS Output Fall Time t FDATA 20% to 80%, C L < 2pF 500 ps
LVDS Differential Skew t SKEW1 Any two LVDS output signals, except DCO <100 ps
PortD Data Pipeline Delay t PDD 7.5
Clock
Cycles
PortC Data Pipeline Delay t PDC 8.5
Clock
Cycles
PortB Data Pipeline Delay t PDB 9.5
Clock
Cycles
PortA Data Pipeline Delay t PDA 10.5
Clock
Cycles
Note 2: Static linearity and offset parameters are computed from a best-fit straight line through the code transition points. The full-
scale range (FSR) is defined as 255 x slope of the line where the slope of the line is determined by the end-point code tran-
sitions. When the analog input voltage exceeds positive FSR, the output code is 11111111; when the analog input voltage is
beyond the negative FSR, the output code is 00000000.
Note 3: Common-mode rejection ratio is defined as the ratio of the change in the transfer-curve offset voltage to the change in the
common-mode voltage, expressed in dB.
Note 4: The offset-adjust control input is tied to an internal 1.25V reference level through a resistor.
Note 5: Measured with the positive supplies tied to the same potential, V
CC A = V CC D = V CC I. V CC varies from 4.75V to 5.25V.
Note 6: To achieve 2.8GHz full-power bandwidth, careful board layout techniques are required.
Note 7: The total harmonic distortion (THD) is computed from the second through the 15th harmonics.
Note 8: Guaranteed by design and characterization.
Note 9: RSTOUTP/RSTOUTN are tested for functionality.
Typical Operating Characteristics
(V CC A = V CC I = V CC D = 5V, V CC O = 3.3V, V EE = -5V, GNDA = GNDI = GNDD = GNDO = GNDR = 0V, f CLK = 2.21184Gsps, analog
input amplitude at -1dBFS differential, clock input amplitude 10dBm differential, digital output pins differential R L = 100Ω. Typical
values are at T
J
= +105°C, unless otherwise noted.)
-90
-70
-80
-40
-50
-60
-10
-20
-30
0
FFT PLOT (16,384-POINT DATA RECORD)
MAX109 toc02
AMPLITUDE (dB)
f CLK = 2.21184GHz
f IN = 300.105MHz
A IN = -1.034dBFS
SNR = 45.1dB
SINAD = 44.8dB
THD = -56.2dBc
SFDR = 62.4dBc
HD2 = -64.4dBc
HD3 = -62.7dBc
0 552.96 276.48 829.44 1105.92
414.72 138.24 691.20 967.68
ANALOG INPUT FREQUENCY (MHz)
-90
-70
-80
-40
-50
-60
-10
-20
-30
0
0 552.96 276.48 829.44 1105.92
414.72 138.24 691.20 967.68
FFT PLOT (16,384-POINT DATA RECORD)
MAX109 toc01
ANALOG INPUT FREQUENCY (MHz)
AMPLITUDE (dB)
f CLK = 2.21184GHz
f IN = 98.145MHz
A IN = -0.975dBFS
SNR = 45.2dB
SINAD = 44.8dB
THD = -55.7dBc
SFDR = 57.2dBc
HD2 = -69.6dBc
HD3 = -57.2dBc
-90
-70
-80
-40
-50
-60
-10
-20
-30
0
FFT PLOT (16,384-POINT DATA RECORD)
MAX109 toc03
AMPLITUDE (dB)
f CLK = 2.21184GHz
f IN = 999.135MHz
A
IN
= -1.059dBFS
SNR = 44.5dB
SINAD = 43.3dB
THD = -49.5dBc
SFDR = 52.1dBc
HD2 = -57.3dBc
HD3 = -52.1dBc
0 552.96 276.48 829.44 1105.92
414.72 138.24 691.20 967.68
ANALOG INPUT FREQUENCY (MHz)