
–3–
REV. 0
AD9054
T est
Level
AD9054BST -200
Min
T yp
AD9054BST -135
Min
T yp
Parameter
T emp
Max
Max
Units
POWER SUPPLY
V
DD
Supply Current (I
DD
)
Power Dissipation
5, 6
Full
Full
VI
VI
100
500
145
725
100
500
140
700
mA
mW
Power Supply Sensitivity
7
+25
°
C
I
0.005
0.015
0.005
0.015
V/V
DYNAMIC PERFORMANCE
8
T ransient Response
Overvoltage Recovery T ime
Signal-to-Noise Ratio (SNR)
(Without Harmonics)
f
IN
= 19.7 MHz
+25
°
C
+25
°
C
V
V
1.5
1.5
1.5
1.5
ns
ns
+25
°
C
Full
+25
°
C
Full
+25
°
C
Full
IV
V
I
V
I
V
42
45
45
45
45
45
45
42
45
45
45
45
dB
dB
dB
dB
dB
dB
f
IN
= 49.7 MHz
42
42
f
IN
= 70.1 MHz
42
Signal-to-Noise Ratio (SINAD)
(With Harmonics)
f
IN
= 19.7 MHz
+25
°
C
Full
+25
°
C
Full
+25
°
C
Full
IV
V
I
V
I
V
40
43
43
43
43
42
42
40
43
43
43
43
dB
dB
dB
dB
dB
dB
f
IN
= 49.7 MHz
40
40
f
IN
= 70.1 MHz
39
Effective Number of Bits
f
IN
= 19.7 MHz
f
IN
= 49.7 MHz
f
IN
= 70.1 MHz
2nd Harmonic Distortion
f
IN
= 19.7 MHz
f
IN
= 49.7 MHz
f
IN
= 70.1 MHz
3rd Harmonic Distortion
f
IN
= 19.7 MHz
f
IN
= 49.7 MHz
f
IN
= 70.1 MHz
T wo-T one Intermod Distortion
(IMD)
f
IN
= 19.7 MHz
f
IN
= 49.7 MHz
f
IN
= 70.1 MHz
+25
°
C
+25
°
C
+25
°
C
IV
I
I
6.35
6.35
6.18
6.85
6.85
6.85
6.35
6.35
6.85
6.85
Bits
Bits
Bits
+25
°
C
+25
°
C
+25
°
C
IV
I
I
58
54
52
63
59
55
58
54
63
59
dBc
dBc
dBc
+25
°
C
+25
°
C
+25
°
C
IV
I
I
48
48
43
56
54
50
48
48
56
54
dBc
dBc
dBc
+25
°
C
+25
°
C
+25
°
C
V
V
V
60
55
50
60
55
dBc
dBc
dBc
NOT ES
1
Gain error and gain temperature coefficient are based on the ADC only (with a fixed +2.5 V external reference).
2
3 dB bandwidth with full-power input signal.
3
t
and t
are measured from the threshold crossing of the ENCODE input to valid T T L levels of the digital outputs. T he output ac load during test is 5 pF (Refer to
equivalent circuits Figures 5 and 6).
4
I
and I
are valid for differential input voltages of less than 1.5 V. At higher differential voltages, the input current will increase to a maximum of 1.25 mA.
5
Power dissipation is measured under the following conditions: analog input is –1 dBfs at 19.7 MHz.
6
T ypical thermal impedance for the ST -44 (T QFP) 44–lead package (in still air):
θ
JC
= 20
°
C/W,
θ
CA
= 35
°
C/W,
θ
JA
= 55
°
C/W.
7
A change in input offset voltage with respect to a change in V
.
8
SNR/harmonics based on an analog input voltage of –1.0 dBfs referenced to a 1.024 V full–scale input range.
Specifications subject to change without notice.
E X PLANAT ION OF T E ST LE VE LS
T est Level
I.
100% production tested.
II. 100% production tested at +25
°
C and sample tested at
specified temperatures.
III. Sample tested only.
IV. Parameter is guaranteed by design and characterization testing.
V. Parameter is a typical value only.
VI. 100% production tested at +25
°
C; guaranteed by design
and characterization testing for industrial temperature range.