REV. A
AD9059
–3–
SPECIFICATIONS
(continued)
AD9059BRS
Parameter Temp Test Level Min Typ Max Unit
DIGITAL INPUTS
Logic 1 Voltage Full VI 2.0 V
Logic 0 Voltage Full VI 0.8 V
Logic 1 Current Full VI ± 1 µA
Logic 0 Current Full VI ± 1 µA
Input Capacitance 25°CV 4.5 pF
Encode Pulsewidth High (t
EH
)25°CIV 6.7 166 ns
Encode Pulsewidth Low (t
EL
)25°CIV 6.7 166 ns
DIGITAL OUTPUTS
Logic 1 Voltage (V
DD
= 3 V) Full VI 2.95 V
Logic 1 Voltage (V
DD
= 5 V) Full IV 4.95 V
Logic 0 Voltage (V
DD
= 3 V or 5 V) Full VI 0.05 V
Output Coding Offset Binary Code
POWER SUPPLY
V
D
Supply Current (V
D
= 5 V) Full VI 72 92 mA
V
DD
Supply Current (V
DD
= 3 V)
4
Full VI 13 15 mA
Power Dissipation
5, 6
Full VI 400 505 mW
Power-Down Dissipation Full VI 6 12 mW
Power Supply Rejection Ratio (PSRR) 25°CI 3 mV/V
NOTES
1
Gain error and gain temperature coefficient are based on the ADC only (with a fixed 2.5 V external reference).
2
t
V
and t
PD
are measured from the 1.5 V level of the ENCODE to the 10%/90% levels of the digital output 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
SNR/harmonics based on an analog input voltage of –0.5 dBFS referenced to a 1.0 V full-scale input range.
4
Digital supply current based on V
DD
= 3 V output drive with <10 pF loading under dynamic test conditions.
5
Power dissipation is based on 60 MSPS encode and 10.3 MHz analog input dynamic test conditions (V
D
= 5 V ± 5%, V
DD
= 3 V ± 5%).
6
Typical thermal impedance for the RS style (SSOP) 28-lead package: θ
JC
= 39°C/W, θ
CA
= 70°C/W, and θ
JA
= 109°C/W.
Specifications subject to change without notice.
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 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.
ABSOLUTE MAXIMUM RATINGS*
V
D
, V
DD
. . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . 7 V
Analog Inputs . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to V
D
+ 0.5 V
Digital Inputs . . . . . . . . . . . . . . . . . . . . . . . –0.5 V to V
D
+ 0.5 V
VREF Input . . . . . . . . . . . . . . . . . . . . . . . . . –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
*Stresses above those listed under Absolute Maximum Ratings may cause permanent
damage to the device. This is a stress rating only; functional operation of the device
at these or any other conditions above those indicated in the operational sections of
this specification is not implied. Exposure to absolute maximum ratings for extended
periods may affect device reliability.
ORDERING GUIDE
Model Temperature Range Package Option
AD9059BRS –40°C to +85°C RS-28
AD9059/PCB 25°C Evaluation Board
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
AD9059 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.
REV. A–4–
AD9059
NN + 3N + 5
N + 1
N + 2
N + 4
t
A
t
V
t
PD
t
EH
t
EL
N – 3 N – 2 N – 1 N N + 1 N + 2
ENCODE
AIN
DIGITAL
OUTPUTS
APERTURE DELAY
PULSEWIDTH HIGH
PULSEWIDTH LOW
OUTPUT VALID TIME
OUTPUT PROP DELAY
6.7ns
6.7ns
4.0ns
166ns
166ns
14.2ns
MIN TYP
MAX
9.5ns
6.6n
2.7ns
t
A
t
EH
t
EL
t
V
t
PD
Figure 1. Timing Diagram
PIN CONFIGURATION
14
13
12
11
10
17
16
15
19
18
20
28
27
26
25
24
23
22
21
9
8
1
2
3
4
7
6
5
TOP VIEW
(Not to Scale)
AD9059
AINA
V
D
ENCODE
GND
AINB
VREF
PWRDN
V
D
D7B (MSB)
V
DD
GND
GND
V
DD
D7A (MSB)
D6A
D5A
D4A
D4B
D5B
D6B
D3A
D2A
D1A
D0A (LSB)
D3B
D0B (LSB)
D1B
D2B
PIN FUNCTION DESCRIPTIONS
Pin No. Mnemonic Function
1, 28 AINA, AINB Analog Inputs for ADC A and B.
2 VREF Internal Voltage Reference (2.5 V
Typical); Bypass with 0.1 µF to
Ground or Overdrive with External
Voltage Reference.
3 PWRDN Power-Down Function Select; Logic
HIGH for Power-Down Mode
(Digital Outputs Go to High-
Impedance State).
4, 25 V
D
Analog 5 V Power Supply.
5, 24, 27 GND Ground.
6, 23 V
DD
Digital Output Power Supply.
Nominally 3 V to 5 V.
7–14 D7A–D0A Digital Outputs of ADC A.
22–15 D7B–D0B Digital Outputs of ADC B.
26 ENCODE Encode Clock for ADCs A and B
(ADCs Sample Simultaneously on
the Rising Edge of ENCODE).
Table I. Digital Coding (VREF = 2.5 V)
Analog Input (V) Voltage Level Digital Output
3.0 Positive Full Scale 1111 1111
2.502 Midscale + 1/2 LSB 1000 0000
2.498 Midscale – 1/2 LSB 0111 1111
2.0 Negative Full Scale 0000 0000
REV. A
Typical Performance Characteristics–AD9059
–5–
FREQUENCY (MHz)
0
–30
–90
–60
–20
–10
–80
–70
–50
–40
030
ENCODE = 60MSPS
ANALOG IN = 10.3MHz, –0.5dBFS
SINAD = 43.9dB
ENOB = 7.0 BITS
SNR = 45.1dB
dB
TPC 1. FFT Spectral Plot 60 MSPS, 10.3 MHz
FREQUENCY (MHz)
0
–30
–90
–60
–20
–10
–50
–40
–80
–70
030
ENCODE = 60MSPS
ANALOG IN = 76MHz, –0.5dBFS
SINAD = 43.0dB
ENOB = 6.85 BITS
SNR = 44.1dB
dB
TPC 2. Spectral Plot 60 MSPS, 76 MHz
ANALOG INPUT FREQUENCY
(
MHz
)
dB
0 16020 40 60 80 100 120 140
46
30
38
36
34
32
42
40
44
ENCODE = 60MSPS
AIN = –0.5dBFS
SNR
SINAD
TPC 3. SINAD/SNR vs. AIN Frequency
ANALOG INPUT FREQUENCY
(
MHz
)
–30
–70
0 16020 40 60 80 100 120 140
–35
–50
–55
–60
–65
–40
–45
SECOND HARMONIC
THIRD HARMONIC
ENCODE = 60MSPS
AIN = –0.5dBFS
dB
TPC 4. Harmonic Distortion vs. AIN Frequency
FREQUENCY (MHz)
dB
0
–10
–90
03010 20
–50
–60
–70
–80
–30
–40
–20
ENCODE = 60MSPS
F1 IN = 9.5MHz @ –7.0dBFS
F2 IN = 9.9MHz @ –7.0dBFS
2F1 - F2 = –52.0dBc
2F2 - F1 = –53.0dBc
TPC 5. Two-Tone IMD
ENCODE RATE (MSPS)
dB
54
24
6
5102030405060708090
48
30
18
12
42
36
AIN = 10.3MHz, –0.5dBFS
SNR
SINAD
TPC 6. SINAD/SNR vs. Encode Rate

AD9059BRS

Mfr. #:
Manufacturer:
Description:
Analog to Digital Converters - ADC Dual 8-Bit 60 MSPS
Lifecycle:
New from this manufacturer.
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