AD9012SQ AD [Analog Devices], AD9012SQ Datasheet - Page 3

• Manufacturer Part Number: AD9012SQ
• Description: High Speed 8-Bit TTL A/D Converter
• Manufacturer: AD [Analog Devices]

CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000 V readily
accumulate on the human body and test equipment and can discharge without detection.
Although the AD9012 features proprietary ESD protection circuitry, permanent damage may
occur on devices subjected to high energy electrostatic discharges. Therefore, proper ESD
precautions are recommended to avoid performance degradation or loss of functionality.
ABSOLUTE MAXIMUM RATINGS
Positive Supply Voltage (+V
Analog to Digital Supply Voltage Differential (–V
Negative Supply Voltage (–V
Analog Input Voltage . . . . . . . . . . . . . . . . . . . . . –V
ENCODE Input Voltage . . . . . . . . . . . . . . . . . –0.5 V to +5 V
OVERFLOW INH Input Voltage . . . . . . . . . . . –5.2 V to 0 V
Reference Input Voltage (+V
Differential Reference Voltage . . . . . . . . . . . . . . . . . . . . .2.1 V
Reference Midpoint Current . . . . . . . . . . . . . . . . . . . .
Digital Output Current . . . . . . . . . . . . . . . . . . . . . . . . 30 mA
Operating Temperature Range
Storage Temperature Range . . . . . . . . . . . . –65 C to +150 C
Junction Temperature
Lead Soldering Temperature (10 sec) . . . . . . . . . . . . . +300 C
NOTES
1
2
3
–V
+V
+V
–V
Analog Input
NOTES
1
2
3
4
5
6
7
8
REV. D
Absolute maximum ratings are limiting values, to be applied individually, and
+V
Maximum junction temperature (t
Parameter
Measured with Analog Input = 0 V.
Measured by FFT analysis where fundamental is –3 dBc.
Input slew rate derived from rise time (10% to 90%) of full-scale step input.
Outputs terminated with two equivalent ’LS00 type loads. (See load circuit.)
Measured from ENCODE into data out for LSB only.
For full-scale step input, 8-bit accuracy is attained in specified time.
Recovers to 8-bit accuracy in specified time, after 150% full-scale input overvoltage.
Output time skew includes high-to-low and low-to-high transitions as well a
bit-to-bit time skew differences.
beyond which the serviceability of the circuit may be impaired. Functional
operability under any of these conditions is not necessarily implied. Exposure to
absolute maximum rating conditions for extended periods may affect device
reliability.
packages, and +150 C for plastic packages:
t
where
typical thermal impedances are:
J
AD9012AQ/BQ/AJ/BJ . . . . . . . . . . . . . . . . –25 C to +85 C
AD9012SE/SQ/TE/TQ . . . . . . . . . . . . . . –55 C to +125 C
= PD (
S
REF
REF
S
REF
PD (
PD = power dissipation
t
t
Ceramic DIP
Ceramic LCC
JLCC
A
C
JA
JC
= ambient temperature ( C)
= case temperature ( C)
= thermal impedance from junction to ambient ( C/W)
= thermal impedance from junction to case ( C/W)
–V
JC
JA
REF
) + t
) + tc
JA
= 59 C/W;
under all circumstances.
Recommended Operating Conditions
A
JA
JA
= 42 C/W;
= 50 C/W;
3
Min
–5.46
+4.75
–V
–2.1
–V
JC
= 15 C/W.
REF
REF
. . . . . . . . . . . . . . . . . . . . . . . . +175 C
J
JC
S
S
REF
JC
max) should not exceed +175 C for ceramic
) . . . . . . . . . . . . . . . . . . . . . +6 V
) . . . . . . . . . . . . . . . . . . . . –6 V
= 10 C/W
= 15 C/W
–V
Input Voltage
REF
Nominal
–5.20
5.00
0.0 V
–2.0
1
)
2
. . . . –3.5 V to +0.1 V
S
) . . . . 0.5 V
S
to +0.5 V
Max
–4.94
+5.25
+0.1
+V
+V
s
REF
REF
4 mA
–3–
10
11
12
13
14
15
Specifications subject to change without notice.
EXPLANATION OF TEST LEVELS
Test Level
I
II – 100% production tested at +25 C, and sample tested at
III – Sample tested only.
IV – Parameter is guaranteed by design and characterization
V – Parameter is a typical value only.
VI – All devices are 100% production tested at +25 C. 100%
Device
AD9012AQ
AD9012BQ
AD9012AJ
AD9012BJ
AD9012SQ
AD9012SE
AD9012TQ
AD9012TE
*E = Leadless Ceramic Chip Carrier; J = Ceramic Leaded Chip Carrier;
9
Q = Cerdip.
Measured at 75 MSPS encode rate. Harmonic data based on worst case harmonics.
Analog input frequency = 1.23 MHz.
RMS signal to rms noise, including harmonics with 1.23 MHz. analog input
NPR measured @ 0.5 MHz. Noise Source is 250 mW (rms) from 0.5 MHz
Supplies should remain stable within 5% for normal operation.
Measured at –5.2 V
ENCODE signal rise/fall times should be less than 30 ns for normal operation.
signal.
to 8 MHz.
– 100% production tested.
specified temperatures. AC testing done on sample basis.
testing.
production tested at temperature extremes for extended
temperature devices; guaranteed by design and
characterization testing for industrial devices.
Linearity
0.75 LSB
0.50 LSB
0.75 LSB
0.50 LSB
0.75 LSB
0.75 LSB
0.50 LSB
0.50 LSB
5% and +5.0 V
Figure 1. Load Circuit
OUTPUT
ORDERING GUIDE
TTL
15pF
5%.
Temperature
Ranges
–25 C to +85 C
–25 C to +85 C
–25 C to +85 C
–25 C to +85 C
–55 C to +125 C
–55 C to +125 C
–55 C to +125 C
–55 C to +125 C
WARNING!
V
S
1k
ESD SENSITIVE DEVICE
AD9012
Package
Q-28
Q-28
J-28A
J-28A
E-28A
Options*
Q-28
E-28A
Q-28