AD9042–SPECIFICATIONS
DC SPECIFICATIONS
(AV
Parameter
RESOLUTION
DC ACCURACY
No Missing Codes
Offset Error
Offset Tempco
Gain Error
Gain Tempco
REFERENCE OUT (V
REF
)
2
ANALOG INPUT (AIN)
Input Voltage Range
Input Resistance
Input Capacitance
ENCODE INPUT
3
Logic Compatibility
4
Logic “1” Voltage
Logic “0” Voltage
Logic “1” Current (V
INH
= 5 V)
Logic “0” Current (V
INL
= 0 V)
Input Capacitance
DIGITAL OUTPUTS
Logic Compatibility
Logic “1” Voltage (I
OH
= 10
µA)
Logic “0” Voltage (I
OL
= 10
µA)
Output Coding
POWER SUPPLY
AV
CC
Supply Voltage
I (AV
CC
) Current
DV
CC
Supply Voltage
I (DV
CC
) Current
I
CC
(Total) Supply Current
Power Dissipation
Power Supply Rejection
(PSRR)
Full
Full
Full
Full
Full
Full
+25°C
Full
VI
V
VI
V
VI
VI
I
V
Full
Full
Full
Full
Full
+25°C
VI
VI
V
VI
V
V
CC
= DV
CC
= +5 V; V
REF
tied to V
OFFSET
through 50
Ω;
T
MIN
= –40 C, T
MAX
= +85 C)
1
Temp
Test
Level
AD9042AST
Min Typ Max
12
Guaranteed
–10
±
3
+10
25
–6.5 0
+6.5
–50
2.4
V
REF
±
0.500
200
250
300
5.5
TTL/CMOS
2.0
5.0
0
0.8
450
625
800
–400 –300 –200
2
CMOS
4.2
0.75
VI
VI
V
VI
V
V
Test
Level
Min
AD9042AD
Typ Max
12
Guaranteed
–10
±
3
+10
25
–6.5 0
+6.5
–50
2.4
V
REF
±
0.500
250
300
7
Units
Bits
mV
ppm/°C
% FS
ppm/°C
V
V
Ω
pF
Full
+25°C
IV
V
IV
V
200
Full
Full
Full
Full
+25°C
VI
VI
VI
VI
V
VI
VI
VI
VI
V
TTL/CMOS
2.0
5.0
0
0.8
450
625
800
–400 –300 –200
2.5
CMOS
4.2
0.75
V
V
µA
µA
pF
+25°C
Full
+25°C
Full
I
IV
I
IV
3.5
3.5
0.80
0.85
Twos Complement
5.0
109
5.0
10
119
595
±
1
±
5
I
IV
I
IV
3.5
3.5
0.80
0.85
Twos Complement
5.0
109
5.0
10
119
595
±
1
±
5
V
V
V
V
–20
147
735
+20
VI
V
VI
V
VI
VI
I
V
–20
147
735
+20
V
mA
V
mA
mA
mW
mV/V
mV/V
NOTES
1
C1 (Pin 10 on AD9042AST only) tied to GND through 0.01
µF
capacitor.
2
V
REF
is normally tied to V
OFFSET
through 50
Ω.
If V
REF
is used to provide dc offset to other circuits, it should first be buffered.
3
ENCODE driven by single-ended source;
ENCODE
bypassed to ground through 0.01
µF
capacitor.
4
ENCODE may also be driven differentially in conjunction with
ENCODE;
see “Encoding the AD9042” for details.
Specifications subject to change without notice.
SWITCHING SPECIFICATIONS
Parameter (Conditions)
Maximum Conversion Rate
Minimum Conversion Rate
Aperture Delay (t
A
)
Aperture Uncertainty (Jitter)
ENCODE Pulse Width High
ENCODE Pulse Width Low
Output Delay (t
OD
)
Temp
Full
Full
+25°C
+25°C
+25°C
+25°C
Full
(AV
CC
= DV
CC
= +5 V; ENCODE &
ENCODE
= 41 MSPS;
V
REF
tied to V
OFFSET
through 50
Ω;
T
MIN
= –40 C, T
MAX
= +85 C)
1
Test
Level
VI
IV
V
V
IV
IV
IV
AD9042AST
Min Typ Max
41
5
–250
0.7
10
10
5
9
14
Test
Level
VI
IV
V
V
IV
IV
IV
AD9042AD
Min Typ Max
41
5
–250
0.7
10
10
5
9
14
Units
MSPS
MSPS
ps
ps rms
ns
ns
ns
NOTE
1
C1 (Pin 10 on AD9042AST only) tied to GND through 0.01
µF
capacitor.
–2–
REV. A
AD [ ANALOG DEVICES ]
