AD9049BR Fast Delivery |IC PHOENIX CO.,LIMITED

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AD9049BR
9-Bit, 30 MSPS ADC
FUNCTIONAL BLOCK DIAGRAM
ENCODE
AIN
AINB
REV.A9-Bit, 30 MSPS ADC
FEATURES
Low Power: 300 mW
On-Chip T/H, Reference
Single +5 V Power Supply Operation
Selectable 5 V or 3 V Logic I/O
Wide Dynamic Performance
APPLICATIONS
Digital Communications
Professional Video
Medical Imaging
Instrumentation
PRODUCT DESCRIPTION
The AD9049 is a complete 9-bit monolithic sampling analog-
to-digital converter (ADC) with an onboard track-and-hold and
reference. The unit is designed for low cost, high performance
applications and requires only +5 V and an encode clock to
achieve 30 MSPS sample rates with 9-bit resolution.
The encode clock is TTL compatible and the digital outputs
are CMOS; both can operate with 5 V/3 V logic, selected by the
user. The two-step architecture used in the AD9049 is opti-
mized to provide the best dynamic performance available while
maintaining low power consumption.
A 2.5 V reference is included onboard, or the user can provide
an external reference voltage for gain control or matching of
multiple devices. Fabricated on an advanced BiCMOS process,
the AD9049 is packaged in space saving surface mount pack-
ages (SOIC, SSOP) and is specified over the industrial
(–40°C to +85°C) temperature range.
Figure 1.Typical Connections
+5V
ENCODE
AIN
(+3.3V ± 0.512V)
+5V
AD9049–SPECIFICATIONS
ELECTRICAL CHARACTERISTICS
ANALOG INPUT
BANDGAP REFERENCE
SWITCHING PERFORMANCE
DYNAMIC PERFORMANCE
(VD, VDD = +5 V; internal reference; ENCODE = 30 MSPS unless otherwise noted)
DIGITAL OUTPUTS
POWER SUPPLY
NOTES“Gain Tempco” is for converter only; “Temperature Coefficient” is for bandgap reference only.Output propagation delay (tPD) is measured from the 50% point of the rising edge of the encode command to the midpoint of the digital outputs with 10 pF
maximum loads.RMS signal to rms noise with analog input signal 0.5 dB below full scale at specified frequency.Intermodulation measured relative to either tone with analog input frequencies of 9.5 MHz and 9.9 MHz at 7 dB below full scale.Power dissipation is measured at 30 MSPS with AIN of 10.3 MHz and digital outputs loaded with 10 pF maximum. See Figure 4 for power dissipation at other
conditions.Measured as the ratio of the change in offset voltage for 5% change in +VD.
Specifications subject to change without notice.
AD9049
EXPLANATION OF TEST LEVELS
Test Level–100% Production Tested.–Parameter is guaranteed by design and characteriza-
tion testing.–Parameter is a typical value only.
ABSOLUTE MAXIMUM RATINGS*
VD, VDD . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .+7 V
ANALOG IN . . . . . . . . . . . . . . . . . . . . . .–1.0 V to VD + 1.0 V
Digital Inputs . . . . . . . . . . . . . . . . . . . . . . . . . . . .–0.5 V to VD
VREF Input . . . . . . . . . . . . . . . . . . . . . . . . . . . . . .–0.5 V to VD
Digital Output Current . . . . . . . . . . . . . . . . . . . . . . . . .20 mA
Operating Temperature
AD9049BR/BRS . . . . . . . . . . . . . . . . . . . . .–40°C to +85°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 and 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 effect device reliability.
ORDERING GUIDE
*R = Small Outline (SO); RS = Shrink Small Outline (SSOP).
AD9049
Table I.AD9049 Digital Coding (Single Ended Input AIN, AINB Bypassed to GND)
PIN DESCRIPTIONSTOP VIEW
(Not to Scale)
AD9049
VDD
GND
REFBP
GND
AINB
AIND4
VDD
GND
GND
ENCODE
D8 (MSB)
NC = NO CONNECT
WARNING!
ESD SENSITIVE DEVICE
CAUTION
ESD (electrostatic discharge) sensitive device. Electrostatic charges as high as 4000V readily
accumulate on the human body and test equipment and can discharge without detection.
Although the AD9049 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.
N + 1N + 2N + 3N + 4N + 5AIN
ENCODE
DIGITAL
OUTPUTS
tPD
Figure 2.Timing Diagram
AINB (Pin 9)
AIN (Pin 10)
INPUT
VREFIN
(Pin 4)
VREFBF
(Pin 6)
VDD (Pins 20, 22)
+3V to +5V
D0–D8
ENCODE
(Pin 13)
VREFOUT
(Pin 3)
Figure 3.Equivalent Circuits
Output StageEncode InputAnalog Input
VREF OutputReference Circuit
AD9049–Typical Performance Curves
TEMPERATURE – °C
–40– 20
SIGNAL-TO-NOISE RATIO – dB
(SINAD)20406080
Figure 7.SNR vs. Temperature
FREQUENCY – MHz
0152.557.51012.5
Figure 8.Two-Tone IMD
DIFF PHASE – Degrees
DIFF GAIN – %34563456
Figure 9.Differential Gain/Differential Phase
CLOCK RATE – MSPS
DISSIPATION – mW2030
190
Figure 4.Power Dissipation vs. Clock Rate10100
ANALOG INPUT FREQUENCY – MHz
Figure 5.SNR/Distortion vs. Frequency
CLOCK RATE – MSPS5
SIGNAL-TO-NOISE RATIO – dB
(SINAD)15202530
Figure 6.SNR vs. Clock Rate

Partno	Mfg	Dc	Qty	Available	Descript
AD9049BR	AD	N/a	10	avai	9-Bit, 30 MSPS ADC