IF Un d e rs a m p le r
ELECTRICAL CHARACTERISTICS (continued)
(VCCA = VCCD = 3.0V, f
= 15MHz, R = ∞, T = T
to T , unless otherwise noted.)
MAX
CLK
L
A
MIN
PARAMETER
SYMBOL
CONDITICOONNSDITIONS
MIN
TYP
MAX
7
UNITS
µA
D0–D6, CLK; VCCD = 2.7V to 5.5V
-1
TXEN = RXEN
RXEN, TXEN;
±1
VCCD = 2.7V
to 3.6V
TXEN = 0 and RXEN = 1, or
TXEN = 1 and RXEN = 0
±2
±1
±4
8
Input Current
I
IN
MAX105
TXEN = RXEN
RXEN, TXEN;
VCCD = 3.6V
to 5.5V
TXEN = 0 and RXEN = 1, or
TXEN = 1 and RXEN = 0
Input Capacitance
C
D0–D6, CLK; TXEN = 1, RXEN = 0 (Note 6)
pF
IN
TIMING CHARACTERISTICS (Data Outputs: R = 1MΩ, C = 15pF, T = T
to T , unless otherwise noted.) (Note 12)
MAX
L
L
A
MIN
DAC Data Setup Time
DAC Data Hold Time
CLK Duty Cycle
t
T
= +25°C (Note 6)
5
5
0.6
0.3
ns
ns
%
DS
A
t
T
A
= +25°C (Note 6)
HOLD
45
55
20
ADC CLK to Output Data Valid
t
C
≤ 12.5pF
L
13
ns
DO
Note 1: TXEN = 1, RXEN = 0. All DAC transfer function parameters are measured differentially from AIO+ to AIO- using the End-
Point Linearity method.
Note 2:
f
IN
= 4.3MHz digital sine wave applied to DAC data inputs; f
= 15MHz. The reference frequency (f ) is defined to be
REF
CLK
10.7MHz (f
- f ). All frequency components present in the DAC output waveform except for f
and f are consid-
REF IN
CLK IN
ered spurious.
Note 3: For DAC SFDR measurements, the amplitude of f
(10.7MHz) is compared to the amplitudes of all frequency compo-
REF
nents of the output waveform except for f (4.3MHz).
IN
Note 4: For DAC measurements, THD+N is defined as the ratio of the square-root of the sum-of-the-squares of the RMS values of
all harmonic and noise components of the output waveform (except for f and f
IN
) to the RMS amplitude of the f
com-
REF
REF
ponent.
Note 5: Clock feedthrough is defined as the difference in amplitude between the f
measured differentially from AIO+ to AIO-.
component and the f
component when
REF
CLK
Note 6: Guaranteed by design. Not production tested.
Note 7: The DAC input interface is a master/slave register. An additional half clock cycle is required for data at the digital inputs to
propagate through to the DAC switches.
Note 8: RXEN = 1, TXEN = 0. Unless otherwise noted, for all receive ADC measurements, the analog input signal is applied differ-
entially from AIO+ to AIO-, specified using the Best-Fit Straight-Line Linearity method.
Note 9:
f
IN
= 10.7MHz, f
= 15MHz. Amplitude is 1dB below full-scale. The reference frequency (f ) is defined to be 4.3MHz
REF
CLK
(f
- f ). All components except for f
and f are considered spurious.
REF IN
CLK IN
Note 10: Receive ADC THD measurements include the first five harmonics.
Note 11: CAUTION: Operation of the analog inputs AIO+ and AIO- (pins 4 and 5) at more than 1.5V below VCCA could cause
latchup and possible destruction of the part. Avoid shunt capacitances to GND on these pins. If shunt capacitances are
required, then bypass these pins only to VCCA.
Note 12: All digital input signals are measured from 50% amplitude reference points. All digital output signal propagation delays are
measured to V
for rising output signals and to V
for falling output signals. The values for V and V
OH(AC) OL(AC)
OH(AC)
OL(AC)
as a function of the VCCD supply are shown in the following table:
VCCD (V)
2.7 to 3.3
3.3 to 5.5
V
(V)
V
(V)
OL(AC)
OH(AC)
VCCD - 1.1
2/3 x VCCD
0.5
0.5
4
_______________________________________________________________________________________