–3–REV. C
AD9283
Test AD9283BRS-100 AD9283BRS-80 AD9283BRS-50
Parameter Temp Level Min Typ Max Min Typ Max Min Typ Max Unit
DYNAMIC PERFORMANCE
5
Transient Response 25°CV 2 2 2 ns
Overvoltage Recovery Time 25°CV 2 2 2 ns
Signal-to-Noise Ratio (SNR)
(Without Harmonics)
f
IN
= 10.3 MHz 25°C I 46.5 47 44 47 dB
f
IN
= 27 MHz 25°C I 46.5 44 47 47 dB
f
IN
= 41 MHz 25°C I 43.5 46.5 47 dB
f
IN
= 76 MHz 25°C V 46.0 dB
Signal-to-Noise Ratio (SINAD)
(With Harmonics)
f
IN
= 10.3 MHz 25°C I 45 47 43.5 46.5 dB
f
IN
= 27 MHz 25°C I 45.5 43.5 46.5 46 dB
f
IN
= 41 MHz 25°C I 42.5 45 42 dB
f
IN
= 76 MHz 25°C V 42.5 dB
Effective Number of Bits
f
IN
= 10.3 MHz 25°C I 7.3 7.5 7.6 Bits
f
IN
= 27 MHz 25°C I 7.4 7.5 7.5 Bits
f
IN
= 41 MHz 25°C I 7.3 7.5 Bits
f
IN
= 76 MHz 25°C V 6.9 Bits
2nd Harmonic Distortion
f
IN
= 10.3 MHz 25°C I 57 60 55 60 dBc
f
IN
= 27 MHz 25°C I 60 55 60 56 dBc
f
IN
= 41 MHz 25°C I 50 58 55 dBc
f
IN
= 76 MHz 25°CV 46 dBc
3rd Harmonic Distortion
f
IN
= 10.3 MHz 25°C I 54.5 70 55 70 dBc
f
IN
= 27 MHz 25°C I 55 55 62.5 60 dBc
f
IN
= 41 MHz 25°C I 47 52.5 60 dBc
f
IN
= 76 MHz 25°CV 53 dBc
Two-Tone Intermod Distortion
(IMD)
f
IN
= 10.3 MHz 25°C V 52 52 52 dBc
NOTES
1
Gain error and gain temperature coefficient are based on the ADC only (with a fixed 1.25 V external reference).
2
t
V
and t
PD
are measured from the 1.5 V level of the ENCODE input to the 50%/50% levels of the digital outputs swing. The digital output load during test is not to
exceed an ac load of 10 pF or a dc current of ± 40 µA.
3
Power dissipation measured with encode at rated speed and a dc analog input.
4
Typical thermal impedance for the RS style (SSOP) 20-lead package: θ
JC
= 46°C/W, θ
CA
= 80°C/W, θ
JA
= 126°C/W.
5
SNR/harmonics based on an analog input voltage of –0.7 dBFS referenced to a 1.024 V full-scale input range.
Specifications subject to change without notice.
ABSOLUTE MAXIMUM RATINGS*
V
D
, V
DD
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 4 V
Analog Inputs . . . . . . . . . . . . . . . . . . . . –0.5 V to V
D
+ 0.5 V
Digital Inputs . . . . . . . . . . . . . . . . . . . –0.5 V to V
DD
+ 0.5 V
VREF IN . . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to V
D
+ 0.5 V
Digital Output Current . . . . . . . . . . . . . . . . . . . . . . . . 20 mA
Operating Temperature . . . . . . . . . . . . . . . . –55°C to +125°C
Storage Temperature . . . . . . . . . . . . . . . . . . –65°C to +150°C
Maximum Junction Temperature . . . . . . . . . . . . . . . . 150°C
Maximum Case Temperature . . . . . . . . . . . . . . . . . . . 150°C
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 AD9283 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.
ORDERING GUIDE
Temperature Package Package
Model Ranges Descriptions Options
AD9283BRS
-50, -80, -100 –40°C to +85°C 20-Lead SSOP RS-20
AD9283/PCB 25°C Evaluation Board
*Stresses above those listed under Absolute Maximum Ratings may cause perma-
nent damage to the device. This is a stress rating only; functional operation of the
device at these or any other conditions outside of those indicated in the operation
sections of this specification is not implied. Exposure to absolute maximum ratings
for extended periods may affect device reliability.
WARNING!
ESD SENSITIVE DEVICE
AD9283
–4–
REV. C
EXPLANATION OF TEST LEVELS
Test 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 characteriza-
tion 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;
100% production tested at temperature extremes for mili-
tary devices.
PIN CONFIGURATION
TOP VIEW
(Not to Scale)
20
19
18
17
16
15
14
13
12
11
1
2
3
4
5
6
7
8
9
10
AD9283
ENCODE
GND
V
D
VREF OUT
VREF IN
GND
A
IN
V
D
D7 (MSB)
D6
D5
D1
D2
D3
D4
V
DD
GND
PWRDWN
D0 (LSB)
A
IN
PIN FUNCTION DESCRIPTIONS
Pin Number Mnemonic Function
1 PWRDWN Power-Down Function Select; Logic HIGH for Power-Down Mode (Digital Outputs Go
to High Impedance State)
2 VREF OUT Internal Reference Output (1.25 V typ); Bypass with 0.1 µF to Ground
3 VREF IN Reference Input for ADC (1.25 V typ)
4, 9, 16 GND Ground
5, 8 V
D
Analog 3 V Power Supply
6A
IN
Analog Input for ADC (Can Be Left Open if Operating in Single-Ended Mode, but Rec-
ommend Connection to a 0.1 µF Capacitor and a 25 Resistor in Series to Ground for
Better Input Matching)
7A
IN
Analog Input for ADC
10 ENCODE Encode Clock for ADC (ADC Samples on Rising Edge of ENCODE)
11–14, 17–20 D7–D4, D3–D0 Digital Outputs of ADC
15 V
DD
Digital output power supply. Nominally 2.5 V to 3.6 V
Table I. Output Coding (VREF = 1.25 V)
Step A
IN
–A
IN
Digital Output
255 0.512 1111 1111
• •
• •
128 0.002 1000 0000
127 –0.002 0111 1111
• •
• •
0 –0.512 0000 0000
AD9283
–5–REV. C
A
IN
V
DD
A
IN
33.3k
14.3k
33.3k
14.3k
Figure 2. Equivalent Analog Input Circuit
V
D
V
BIAS
REF IN
Figure 3. Equivalent Reference Input Circuit
ENCODE
V
D
Figure 4. Equivalent Encode Input Circuit
OUT
V
DD
Figure 5. Equivalent Digital Output Circuit
OUT
V
D
Figure 6. Equivalent Reference Output Circuit
A
IN
ENCODE
t
A
SAMPLE N
SAMPLE N+1
SAMPLE N+2
SAMPLE N+3
SAMPLE N+4
SAMPLE N+5
1/
fS
t
EL
t
EH
D7D0
DATA N4 DATA N3 DATA N2 DATA N1 DATA N DATA N+1
t
PD
t
V
Figure 1. Timing Diagram

AD9283BRSZ-50

Mfr. #:
Manufacturer:
Analog Devices Inc.
Description:
Analog to Digital Converters - ADC IC 8 BIT 50 MSPS
Lifecycle:
New from this manufacturer.
Delivery:
DHL FedEx Ups TNT EMS
Payment:
T/T Paypal Visa MoneyGram Western Union