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Analog Devices Inc. AD9049BR
- Part No.:
- AD9049BR
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
AD9049BR.pdf
- Description:
- ADC,9-BIT, PARALLEL, WORD ACCESS
- Quantity:
- Payment:
- Shipping:
Inventory:853
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Product details
Overview
AD9049BR from Analog Devices is a 9-bit, 30 MSPS monolithic analog-to-digital converter (ADC) with integrated track-and-hold and 2.5 V bandgap reference. It operates from a single +5 V supply, supports user-selectable 5 V or 3 V digital I/O, and delivers 8.56 ENOB at 2.3 MHz input-enabling high-fidelity digitization in professional video signal chains.
For engineers reviewing the AD9049BR datasheet, AD9049BR pinout, AD9049BR application, or AD9049BR equivalent, key selection considerations include its industrial temperature range (–40°C to +85°C), SOIC-28 (R-28) package, 100 MHz analog bandwidth, aperture jitter of 5 ps rms, and guaranteed no missing codes across full scale.
Technical Context
The AD9049BR employs a two-step subranging architecture with digital error correction to ensure true 9-bit accuracy. Its differential analog input is internally biased at +3.3 V, accepts ±0.512 V p-p signals centered on that level, and includes overvoltage recovery in 10 ns.
Timing is synchronized to the rising edge of the TTL-compatible ENCODE input; output data appear after five pipeline stages with 5–15 ns propagation delay. The device uses separate analog (VD) and digital (VDD) power supplies to isolate noise-sensitive conversion paths from digital switching transients.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 9 bits - defines quantization step size (≈1.024 V / 512 = 2 mV LSB) for full-scale 1.024 Vp-p input range. |
| Max Conversion Rate | 30 MSPS - supports real-time sampling of baseband video and IF signals up to ~15 MHz Nyquist bandwidth. |
| ENOB @ 2.3 MHz | 8.56 ENOBs - indicates effective resolution under dynamic conditions, equivalent to ≈53.3 dB SINAD. |
| Analog Bandwidth | 100 MHz - enables accurate digitization of fast-rising edges and wideband RF/IF signals without amplitude roll-off. |
| Aperture Uncertainty | 5 ps rms - limits sampling-time jitter-induced SNR degradation to ≤0.3 dB at 10 MHz input frequency. |
| Power Dissipation | 300 mW at 30 MSPS - enables thermal management in dense PCB layouts without forced air cooling. |
| Reference Output | 2.5 V ±0.1 V - stable internal bandgap reference with ±50 ppm/°C tempco, usable as system reference for external circuitry. |
Pinout & Package
AD9049BR is housed in a 28-lead Small Outline IC (SOIC) package (R-28), 0.300-inch body width, with gull-wing leads and standard JEDEC MS-012AC footprint.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1, 7, 12, 21, 23 | GND | Dedicated ground return paths for analog, digital, and reference sections to minimize crosstalk and offset drift. |
| 2, 8, 11 | VD | +5 V ±5% analog supply - powers T/H, ADC core, and reference; requires local 0.1 µF bypassing per pin. |
| 3 | VREFOUT | Internal 2.5 V bandgap reference output - provides stable reference voltage with 500 µA drive capability. |
| 4 | VREFIN | Reference amplifier input - connects to VREFOUT for internal reference use or to external precision reference. |
| 5 | COMP | Internal compensation node - requires 0.1 µF capacitor to VD for stability of reference amplifier. |
| 6 | REFBP | Reference bypass terminal - connects external 0.1 µF capacitor to GND for low-noise reference filtering. |
| 9 | AINB | Complementary analog input - used with AIN for differential signaling; improves CMRR and dynamic range. |
| 10 | AIN | Main analog input - accepts single-ended or differential signals; internally biased at +3.3 V DC level. |
| 13 | ENCODE | TTL-compatible clock input - rising edge triggers track-to-hold transition and initiates conversion cycle. |
| 14, 28 | NC | No-connect pins - must remain unconnected; not internally bonded or functional. |
| 15, 16–19, 24–27 | D8–D0 | 9-bit parallel CMOS digital outputs - MSB (D8) to LSB (D0); logic levels configurable for 3 V or 5 V operation via VDD pins. |
| 20, 22 | VDD | Digital output supply - sets CMOS output swing; connect to 3 V or 5 V rail depending on interfacing logic family. |
Key Features
| Feature | Design Value |
|---|---|
| On-chip track-and-hold | Eliminates need for external T/H amplifier, reducing board area and signal path complexity in high-speed acquisition systems. |
| Integrated 2.5 V bandgap reference | Provides stable, low-drift reference without external components; ±50 ppm/°C tempco ensures gain stability over temperature. |
| Selectable 3 V / 5 V digital I/O | Enables direct interface to mixed-voltage systems-no level translators required when driving or receiving from 3 V logic. |
| Overvoltage recovery in 10 ns | Prevents data corruption during transient overdrive; outputs lock to full-scale code and resume valid conversion within one cycle. |
| No missing codes guaranteed | Ensures monotonic transfer function across full operating range-critical for closed-loop control and measurement applications. |
Applications
| Professional Video Capture | Digital Communications Baseband |
|---|---|
|
Use Scenario: Digitizing composite or component video signals in broadcast-grade frame grabbers and digital video recorders. IC Role / Device Role / Timing Role: Primary ADC capturing luminance/chrominance channels at 13.5–27 MHz pixel clocks with minimal harmonic distortion. Use Value: 8.51 ENOB at 10.3 MHz and –67 dBc 2nd harmonic distortion preserve color fidelity and reduce post-processing burden. |
Use Scenario: Sampling intermediate frequency (IF) signals in software-defined radio (SDR) receivers and cellular base station front-ends. IC Role / Device Role / Timing Role: High-speed digitizer for 1–15 MHz IF bands, feeding FPGA-based demodulation and channel filtering. Use Value: 100 MHz analog bandwidth and 5 ps rms aperture jitter maintain EVM integrity in QAM-64/256 modulated waveforms. |
| Medical Ultrasound Beamforming | High-Speed Instrumentation Data Acquisition |
|
Use Scenario: Converting echo return signals from phased-array transducers in portable ultrasound systems. IC Role / Device Role / Timing Role: Channel ADC in multi-channel receive beamformer ASICs, operating at 20–40 MSPS with tight timing alignment. Use Value: Five-stage pipeline latency and deterministic tPD (5–15 ns) enable precise inter-channel time-of-flight correlation for spatial resolution. |
Use Scenario: Capturing transient waveforms in automated test equipment (ATE), oscilloscope front-ends, and vibration analysis systems. IC Role / Device Role / Timing Role: Core digitizer for 10–30 MSPS real-time waveform capture with low noise floor and high spurious-free dynamic range. Use Value: 65 dBc two-tone IMD and 53.3 dB SINAD at 2.3 MHz support accurate spectral analysis of complex periodic signals. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9050BR | 10-bit resolution, same 30 MSPS rate, higher power (450 mW), improved ENOB (9.0 ENOB @ 2.3 MHz). | Better resolution needed for precision instrumentation; less suitable where 9-bit suffices and power budget is constrained. | Select AD9050BR only if ≥9.5 ENOB is required and additional 150 mW dissipation is acceptable. |
| ADS830IPW | 8-bit, 60 MSPS, CMOS process, no integrated T/H or reference; requires external clock conditioning and reference. | Higher speed but lower resolution; demands more external components and layout effort for equivalent performance. | Choose ADS830IPW only when >30 MSPS is mandatory and system-level calibration can compensate for missing on-chip functions. |
Compared with AD9049BR, AD9050BR offers higher resolution at the cost of increased power and reduced integration, while ADS830IPW trades integration and ease-of-use for raw speed-neither is pin-compatible, and both require PCB redesign and firmware adaptation.
Availability
AD9049BR is available at Aetrix Electronics and suitable for professional video capture, digital communications baseband processing, and medical ultrasound beamforming requiring stable component supply across extended temperature ranges.
Supply support for AD9049BR includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Analog Devices, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.
The AD9049BR belongs to Analog Devices' legacy high-speed ADC product line, designed specifically for cost-sensitive, high-dynamic-range digitization in video, communications, and instrumentation systems operating from single +5 V supplies.
FAQ
What is the operating temperature range specified for the AD9049BR?
The AD9049BR is rated for industrial operation from –40°C to +85°C, as confirmed in the Ordering Guide and Absolute Maximum Ratings table. This range applies to all electrical specifications unless otherwise noted in the test conditions column (e.g., "+25°C" entries are characterization points, not operational limits). The AD9049BR maintains guaranteed performance-including no missing codes and specified ENOB-across this full range.
Does the AD9049BR include an internal voltage reference, and can it be overridden?
Yes, the AD9049BR integrates a 2.5 V bandgap reference (VREFOUT, Pin 3) with ±50 ppm/°C temperature coefficient. It is enabled by connecting Pin 3 (VREFOUT) to Pin 4 (VREFIN). An external reference may be applied to Pin 4 instead, provided it supplies ≥5 µA and remains within –0.5 V to VD; doing so allows gain adjustment and improved accuracy beyond the internal reference's capabilities.
How does the AD9049BR handle analog input overvoltage conditions?
The AD9049BR includes dedicated out-of-range comparators that detect inputs outside the nominal +2.788 V to +3.812 V window. When triggered, the track-and-hold shuts off and digital outputs lock to all-0s or all-1s. Recovery is automatic and completes within 10 ns once the input returns to range-ensuring no invalid codes propagate to downstream logic during transient events.
What package type is used for the AD9049BR, and is it RoHS-compliant?
The AD9049BR uses the R-28 package: a 28-lead Small Outline IC (SOIC) with 0.300-inch body width and standard JEDEC MS-012AC dimensions. While the original datasheet predates RoHS mandates, Analog Devices confirms the AD9049BR is manufactured using lead-free terminations and complies with EU RoHS Directive 2011/65/EU and China RoHS II, with full material declarations available upon request.
Can the AD9049BR operate with a 3 V digital supply while using a +5 V analog supply?
Yes-the AD9049BR supports independent analog (VD, Pins 2/8/11) and digital (VDD, Pins 20/22) supplies. Connecting VDD pins to 3 V configures CMOS outputs for 3 V logic levels, while VD remains at +5 V to power the analog core and reference. This dual-supply operation is explicitly validated in the datasheet's "3 V System" section and Figure 15 (tPD vs. temperature).
AD9049BR Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- AD9049
- Package/Case:
- 28-SOIC (0.295", 7.50mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Number of Bits:
- 9
- Sampling Rate (Per Second):
- 30M
- Number of Inputs:
- 1
- Input Type:
- Differential, Single Ended
- Data Interface:
- -
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:2
- Number of A/D Converters:
- 2
- Architecture:
- Two-Step
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 4.75V ~ 5.25V
- Voltage - Supply, Digital:
- 4.75V ~ 5.25V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 28-SOIC
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD9049BR FAQ
1.How can I place an order for AD9049BR through Aetrix?
Please submit a Request for Quotation (RFQ) for AD9049BR on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for AD9049BR reliable?
The price and inventory of AD9049BR are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD9049BR is usually 5 days.
3.What payment methods are accepted for AD9049BR?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD9049BR transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD9049BR?
AD9049BR orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD9049BR order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for AD9049BR?
For technical support, including AD9049BR datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD9049BR requirements.
6.How does Aetrix verify that AD9049BR is sourced from the original manufacturer or authorized distributors?
All AD9049BR products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that AD9049BR meets industry standards.
7.What is the process for return or replacement of AD9049BR?
All AD9049BR units undergo pre-shipment inspection (PSI). If there is an issue with AD9049BR, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The AD9049BR part is unused and in its original packaging.
Return procedure for AD9049BR:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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