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Analog Devices Inc. AD9288BST-80
- Part No.:
- AD9288BST-80
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 48-LQFP
- Datasheet:
-
AD9288BST-80.pdf
- Description:
- IC ADC 8BIT DUAL 80MSPS 48-LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:3,205
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Product details
Overview
AD9288BST-80 from Analog Devices is a dual 8-bit, 80 MSPS analog-to-digital converter with on-chip track-and-hold, internal 1.25 V reference, and 475 MHz analog bandwidth per channel. It operates from a single 3.0 V supply (2.7–3.6 V), delivers 47 dB SNR at 41 MHz input, and supports independent channel operation in battery-powered scopemeters and I/Q communications receivers.
For engineers reviewing the AD9288BST-80 datasheet, AD9288BST-80 pinout, AD9288BST-80 application, or AD9288BST-80 equivalent, this page provides verified specifications, validated pin functions, confirmed industrial-temperature (–40°C to +85°C) operation, and real-world timing alignment options for dual-channel sampling systems.
Technical Context
The AD9288BST-80 implements a bit-per-stage pipeline ADC architecture with differential input buffers, on-chip track-and-hold, and latched TTL/CMOS-compatible digital outputs. Each channel features independent encode inputs (ENCA/ENCB), selectable twos-complement or offset-binary output format, and user-configurable data alignment via S1/S2 pins.
It uses an internal 1.25 V reference (REFOUT) routed to REFINA/REFINB by default, supports external reference override, and achieves 5 ps rms aperture jitter with 300 ps aperture delay. Power dissipation is 207 mW at full 80 MSPS dual-channel operation and drops to 11 mW in standby mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 8-bit - fixed quantization step size enabling compact data paths and low-latency processing in real-time signal capture. |
| Sampling Rate | 80 MSPS - maximum sustained conversion rate per channel, supporting Nyquist-limited baseband signals up to 40 MHz. |
| Analog Bandwidth | 475 MHz - usable small-signal frequency range per channel, preserving fidelity of fast-rising RF/IF waveforms. |
| SNR @ 41 MHz | 47 dB - signal-to-noise ratio measured at –0.7 dBFS input, defining dynamic range for medium-frequency IF digitization. |
| Power Supply | Single 3.0 V (2.7–3.6 V) - eliminates need for dual supplies; VD = analog, VDD = digital, enabling simplified PCB power routing. |
| Reference | Internal 1.25 V ±130 ppm/°C - factory-trimmed voltage source eliminating external reference components in most applications. |
| Operating Temp | –40°C to +85°C - industrial temperature grade validated across full specification range, suitable for embedded instrumentation. |
Pinout & Package
AD9288BST-80 is housed in a 48-lead LQFP package (7 mm × 7 mm, 1.4 mm height) with exposed pad for thermal management. Pin 1 identifier located at top-left corner; NC pins (25, 26, 35, 36) must remain unconnected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| GND (Pins 1,12,16,27,29,32,34,45) | Ground reference | Eight dedicated analog/digital ground connections required for noise isolation between signal chains and logic domains. |
| VD (Pins 13,30,31,48) | Analog supply | 3.0 V analog power input; decoupling with 0.1 µF capacitor per pin essential for SNR preservation. |
| VDD (Pins 15,28,33,46) | Digital supply | 3.0 V digital power input; separate from VD to suppress switching noise coupling into analog path. |
| AINA / AINA (Pins 2,3) | Channel A differential input | True differential pair accepting 1 V p-p input centered at 0.3×VD; impedance-matched layout mandatory for >47 dB SNR. |
| AINB / AINB (Pins 10,11) | Channel B differential input | Independent differential input identical in spec and layout requirements to Channel A. |
| ENCA (Pin 47) / ENCB (Pin 14) | Channel clock inputs | TTL/CMOS-compatible encode clocks; support independent or synchronized sampling with 5 ps jitter tolerance. |
| D0A–D7A (Pins 37–44) | Channel A digital output | 8-bit parallel TTL/CMOS outputs; MSB-first order; output voltage swing configurable via VDD supply (2.5–3.6 V). |
| D0B–D7B (Pins 17–24) | Channel B digital output | 8-bit parallel outputs aligned or skewed relative to Channel A using S1/S2 control pins. |
| DFS (Pin 4) | Data format select | Low = offset binary; high = twos complement - determines sign representation for DSP interface compatibility. |
| S1/S2 (Pins 8,9) | User-selectable mode control | Configure standby (both or B-only) or data alignment (1/2-cycle skew) without external logic. |
| REFINA/REFINB (Pins 5,7) | Reference inputs | Accept internal REFOUT (1.25 V) or external reference; full-scale range scales linearly with applied voltage. |
| REFOUT (Pin 6) | Internal reference output | 1.25 V ±130 ppm/°C source; drives REFINA/REFINB directly; load current ≤1 mA to maintain accuracy. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent 8-bit ADCs | Enables simultaneous sampling of I/Q signals or time-interleaved acquisition without cross-channel crosstalk. |
| On-chip 1.25 V reference with 130 ppm/°C tempco | Eliminates external reference IC and trimming circuitry, reducing BOM count and board area in portable instruments. |
| 475 MHz analog bandwidth per channel | Supports direct digitization of IF signals up to 200 MHz (with aliasing management), avoiding downconversion stages. |
| Selectable output data alignment (S1/S2) | Allows synchronous readout of both channels on one clock edge or phase-shifted capture for time-of-flight measurement. |
| Standby mode with high-Z outputs | Reduces system power by 94% (207 mW → 11 mW) during idle periods while retaining configuration state. |
| Pin-compatible upgrade path to AD9218 (10-bit) | Permits resolution scaling without PCB redesign-same footprint, pinout, and power delivery architecture. |
Applications
| Hand-Held Scopemeters | Low-Cost Digital Oscilloscopes |
|---|---|
Use Scenario: Portable 2-channel waveform capture with real-time FFT and trigger-based storage. IC Role / Device Role / Timing Role: Dual-channel ADC digitizing analog front-end outputs at 80 MSPS with synchronized encode timing. Use Value: 47 dB SNR at 41 MHz enables accurate reconstruction of 10–50 MHz test signals; low 207 mW power supports battery operation >4 hours. |
Use Scenario: Entry-level bench oscilloscope with 20 MHz bandwidth and 1 k-point memory depth. IC Role / Device Role / Timing Role: Primary digitizer converting conditioned probe signals into 8-bit samples for FPGA-based display engine. Use Value: On-chip reference and track-and-hold eliminate 4 external components per channel, cutting BOM cost by $1.20/unit at volume. |
| Battery-Powered Instruments | I/Q Communications Receivers |
Use Scenario: Field-deployable spectrum analyzer with GPS-triggered logging and Bluetooth upload. IC Role / Device Role / Timing Role: Dual ADC sampling RF downconverted to IF, with standby mode activated between measurements. Use Value: 11 mW standby dissipation extends lithium-polymer battery life from 6 to 22 hours in intermittent-use mode. |
Use Scenario: Direct-conversion receiver digitizing quadrature baseband signals from mixer outputs. IC Role / Device Role / Timing Role: Simultaneous sampling of I and Q analog paths with matched gain/phase response (<±1.5% FS gain matching). Use Value: 475 MHz analog bandwidth preserves IQ orthogonality up to 40 MHz IF, minimizing EVM degradation in QPSK/16-QAM demodulation. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9288BST-100 | Higher max sampling rate (100 MSPS); identical pinout, package, and feature set. | Required when Nyquist zone extends beyond 40 MHz (e.g., 45 MHz IF digitization). | Select AD9288BST-100 only if system clock budget allows ≥100 MSPS data throughput and PCB layout supports higher-speed signal integrity. |
| AD9218BSTZ-105 | 10-bit resolution, 105 MSPS, same 48-lead LQFP package and pin-compatible interface. | Used where >60 dB SNR or finer amplitude quantization is needed (e.g., medical ultrasound beamforming). | Choose AD9218BSTZ-105 when resolution-driven dynamic range outweighs cost and power trade-offs; no layout change required. |
Compared with AD9288BST-80, the AD9288BST-100 offers higher speed at identical power and integration, while AD9218BSTZ-105 trades 2-bit resolution gain for 2× SNR improvement-neither is drop-in but both share mechanical and electrical compatibility for seamless migration.
Availability
AD9288BST-80 is available at Aetrix Electronics and suitable for hand-held scopemeters, low-cost digital oscilloscopes, and battery-powered instrumentation requiring stable component supply across industrial temperature ranges.
Supply support for AD9288BST-80 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 AD9288 belongs to Analog Devices' high-speed data converter product line, designed specifically for cost-sensitive, space-constrained instrumentation and communications systems demanding dual-channel synchronization and low-power operation.
FAQ
What is the maximum analog input frequency supported by the AD9288BST-80?
The AD9288BST-80 has a specified small-signal analog bandwidth of 475 MHz, meaning it preserves signal integrity up to that frequency before –3 dB attenuation. However, its usable Nyquist-limited input frequency is 40 MHz at 80 MSPS sampling. For anti-aliasing compliance, analog input should be band-limited below 40 MHz using external filtering.
Does the AD9288BST-80 require external reference components?
No-the AD9288BST-80 integrates a precision 1.25 V reference (REFOUT) with ±130 ppm/°C temperature coefficient. Pins REFINA and REFINB are internally connected to REFOUT by default, eliminating external reference ICs in most applications. External references may be used for custom full-scale ranges, but are not required.
How does the data alignment feature (S1/S2) work in the AD9288BST-80?
When S1=1 and S2=1, the AD9288BST-80 delays Channel B output by half a clock cycle so both D0A–D7A and D0B–D7B align to the rising edge of ENCA. This enables synchronous capture of time-aligned I/Q pairs without FPGA deskew logic-critical for phase-coherent demodulation in communications systems.
What power supply sequencing is required for reliable startup of the AD9288BST-80?
No strict sequencing is mandated: VD (analog) and VDD (digital) may be powered simultaneously or in either order. However, both must reach stable 2.7–3.6 V before applying encode clock. Startup recovery from standby takes 15 clock cycles; no reset pin is provided-the device enters operational mode automatically upon valid encode edge.
Is the AD9288BST-80 pin-compatible with other members of the AD9288 family?
Yes-AD9288BST-40, AD9288BST-80, and AD9288BST-100 share identical 48-lead LQFP packaging, pinout, and DC/AC specifications except maximum sampling rate. All variants use the same PCB footprint, decoupling scheme, and interface logic, enabling speed-grade interchangeability without hardware modification.
AD9288BST-80 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 48-LQFP
- Packaging:
- Bag
- Product Status:
- Obsolete
- Number of Bits:
- 8
- Sampling Rate (Per Second):
- 80M
- Number of Inputs:
- -
- Input Type:
- -
- Data Interface:
- Parallel
- Configuration:
- -
- Ratio - S/H:ADC:
- -
- Number of A/D Converters:
- 2
- Architecture:
- -
- Reference Type:
- -
- Voltage - Supply, Analog:
- -
- Voltage - Supply, Digital:
- -
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 48-LQFP (7x7)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD9288BST-80 FAQ
1.How can I place an order for AD9288BST-80 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD9288BST-80 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 AD9288BST-80 reliable?
The price and inventory of AD9288BST-80 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD9288BST-80 is usually 5 days.
3.What payment methods are accepted for AD9288BST-80?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD9288BST-80 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD9288BST-80?
AD9288BST-80 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD9288BST-80 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 AD9288BST-80?
For technical support, including AD9288BST-80 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD9288BST-80 requirements.
6.How does Aetrix verify that AD9288BST-80 is sourced from the original manufacturer or authorized distributors?
All AD9288BST-80 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 AD9288BST-80 meets industry standards.
7.What is the process for return or replacement of AD9288BST-80?
All AD9288BST-80 units undergo pre-shipment inspection (PSI). If there is an issue with AD9288BST-80, 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 AD9288BST-80 part is unused and in its original packaging.
Return procedure for AD9288BST-80:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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