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Analog Devices Inc. AD9218BSTZ-RL80
- Part No.:
- AD9218BSTZ-RL80
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 48-LQFP
- Datasheet:
-
AD9218BSTZ-RL80.pdf
- Description:
- IC ADC 10BIT PIPELINED 48LQFP
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
AD9218BSTZ-RL80 from Analog Devices is a dual-channel, 10-bit, 80 MSPS analog-to-digital converter (ADC) with on-chip track-and-hold and internal reference. It operates from a single 3.0 V supply (2.7–3.6 V), delivers 57 dB SNR at 41 MHz input with 80 MSPS encode rate, supports 1 Vp-p or 2 Vp-p differential analog input range, and achieves –75 dBc inter-channel crosstalk-enabling high-fidelity I/Q sampling in portable test equipment and ultrasound front-ends.
For engineers reviewing the AD9218BSTZ-RL80 datasheet, AD9218BSTZ-RL80 pinout, AD9218BSTZ-RL80 application, or AD9218BSTZ-RL80 equivalent, key selection considerations include its guaranteed no-missing-codes performance at 80 MSPS, user-selectable twos complement/offset binary output format, independent channel power-down capability, and pin compatibility with the AD9288 for 8-bit-to-10-bit migration paths.
Technical Context
The AD9218BSTZ-RL80 implements a bit-per-stage pipeline architecture with switch-capacitor techniques to generate the 7 MSBs and drive a 3-bit flash sub-ADC per channel. Each channel features fully differential analog input buffers with self-biased common-mode voltage (VD/3) and 300 MHz full-power analog bandwidth.
Its digital interface uses TTL/CMOS-compatible outputs powered from a separate VDD rail (2.5–3.6 V), supports data alignment mode via S1/S2 control pins, and incorporates five-cycle pipeline latency with deterministic timing referenced to rising edges of ENCA/ENCB clocks.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit-guarantees 1024 discrete output codes with no missing codes across industrial temperature range at 80 MSPS. |
| Sampling Rate | 80 MSPS-supports real-time digitization of IF signals up to 39 MHz (Nyquist) with 57 dB SNR and 55 dB SINAD. |
| Analog Input Range | 1 Vp-p or 2 Vp-p differential-configurable via DFS/GAIN pin; enables flexible signal scaling without external gain stages. |
| Power Dissipation | 515–550 mW total (275 mW/channel)-achieved at 80 MSPS with 3.0 V supply, enabling battery-powered scope designs. |
| Crosstalk | –75 dBc-ensures minimal coupling between Channel A and Channel B, critical for simultaneous I/Q acquisition. |
| Reference | Internal 1.24 V ±0.05 V REFOUT-eliminates need for external precision reference in most applications; tracks linearly with full-scale range. |
| Supply Range | VD = 2.7–3.6 V, VDD = 2.5–3.6 V-allows coexistence with 3.3 V or 2.5 V logic families without level shifters. |
Pinout & Package
The AD9218BSTZ-RL80 is housed in a 48-lead LQFP package (7 mm × 7 mm, 0.5 mm pitch), rated for industrial temperature range (–40°C to +85°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AINA / AINA | Differential analog input, Channel A | Accepts 1 Vp-p or 2 Vp-p differential signal; self-biased to VD/3; 300 MHz bandwidth. |
| AINB / AINB | Differential analog input, Channel B | Independent input path with identical specs to Channel A; –75 dBc isolation from Channel A. |
| ENCA / ENCB | Encode clock inputs | TTL/CMOS-compatible; supports independent or phase-aligned clocks; minimum pulse width 5 ns (high/low) at 80 MSPS. |
| DFS/GAIN | Data format & input gain select | Configures output coding (twos complement/offset binary) and analog input range (1 Vp-p/2 Vp-p). |
| S1 / S2 | User-select control inputs | Enable power-down (both or Channel B only) or data alignment mode (½-cycle skew for synchronized dual-clock operation). |
| D0A–D9A / D0B–D9B | Digital outputs | 10-bit parallel TTL/CMOS outputs; MSB-first; high-impedance during power-down; VDD-referenced swing. |
| REFOUT | Internal reference output | 1.24 V nominal; supplies REFINA/REFINB; stable over temperature (±40 ppm/°C drift). |
| VD / VDD | Analog/digital supply rails | VD powers analog core (2.7–3.6 V); VDD powers digital outputs (2.5–3.6 V); separate routing recommended. |
Key Features
| Feature | Design Value |
|---|---|
| Dual independent ADC channels | Enables simultaneous I/Q sampling or time-interleaved acquisition without external multiplexing or synchronization logic. |
| On-chip track-and-hold + reference | Reduces BOM count and layout complexity; eliminates external sample-hold amplifier and precision voltage reference ICs. |
| Pin compatibility with AD9288 | Allows drop-in upgrade from 8-bit to 10-bit resolution in existing PCB designs-no layout revision required. |
| User-selectable output data format | Twos complement or offset binary via DFS/GAIN pin-simplifies FPGA/DSP interface design without external logic translation. |
| Channel-specific power-down | Reduces system power by 50% when only one channel is active-critical for battery-operated handheld scopemeters. |
Applications
| Hand-Held Scopemeters | Low-Cost Digital Oscilloscopes |
|---|---|
Use Scenario: Portable field test instrument capturing transient waveforms with ≥50 MHz bandwidth and real-time FFT analysis. IC Role / Device Role / Timing Role: Dual ADC digitizes differential probe inputs for simultaneous time-domain and frequency-domain processing. Use Value: 300 MHz analog bandwidth and 80 MSPS sampling enable accurate reconstruction of fast edges; low 275 mW/channel power extends battery life. |
Use Scenario: Entry-level bench oscilloscope requiring two synchronized analog channels for differential measurements and math functions. IC Role / Device Role / Timing Role: Provides matched, low-crosstalk digitization of Channel 1 and Channel 2 inputs with deterministic 5-cycle pipeline latency. Use Value: –75 dBc crosstalk ensures clean subtraction for differential mode; pin compatibility with AD9288 lowers NRE cost for multi-tier product families. |
| Ultrasound Equipment | I/Q Communications Receivers |
Use Scenario: Portable ultrasound machine digitizing RF echo signals from phased-array transducers at 10–20 MHz center frequencies. IC Role / Device Role / Timing Role: Digitizes I and Q baseband components from quadrature demodulator outputs for beamforming and image reconstruction. Use Value: Guaranteed no-missing-codes performance at 80 MSPS ensures fidelity in dynamic range-critical medical imaging; 57 dB SNR preserves weak echo detail. |
Use Scenario: Cable/satellite modem receiver performing direct IF sampling of QAM-modulated signals at 36–44 MHz IF. IC Role / Device Role / Timing Role: Simultaneously samples in-phase (I) and quadrature (Q) signal paths to preserve phase coherence for complex demodulation. Use Value: Independent channel operation and data alignment mode support precise timing alignment of I/Q data streams for DSP-based symbol recovery. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel, 10-bit ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9218BSTZ-RL105 | Higher sampling rate (105 MSPS) with identical pinout, package, and feature set; SNR degrades to 54 dB at Nyquist (51 MHz). | Required for systems needing >80 MSPS capture (e.g., wider IF bandwidths or higher symbol rates). | Select AD9218BSTZ-RL105 only if encode rate >80 MSPS is mandatory; otherwise AD9218BSTZ-RL80 offers optimal power/performance trade-off. |
| AD9288BSTZ-80 | 8-bit resolution, same 48-lead LQFP package and pinout; lower power (180 mW total), reduced SNR (49 dB at 41 MHz), no internal reference. | Suitable for cost-sensitive applications where 8-bit resolution suffices (e.g., basic waveform display, non-critical monitoring). | Choose AD9288BSTZ-80 for legacy designs or budget-limited projects; AD9218BSTZ-RL80 provides 2-bit resolution uplift with minimal integration effort. |
Compared with AD9218BSTZ-RL105, the AD9218BSTZ-RL80 reduces power by ~10% while maintaining sufficient SNR for 39 MHz IF sampling; compared with AD9288BSTZ-80, it adds 2 bits of resolution and integrated reference at modest power cost-making it the preferred choice for mid-tier test and medical instrumentation.
Availability
AD9218BSTZ-RL80 is available at Aetrix Electronics and suitable for hand-held scopemeters, low-cost digital oscilloscopes, and ultrasound front-ends requiring stable component supply, long-term production continuity, and industrial temperature grade assurance.
Supply support for AD9218BSTZ-RL80 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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, communications, automotive, and healthcare markets since 1965.
The AD9218BSTZ-RL80 belongs to Analog Devices' high-speed data converter product line, designed specifically for cost-sensitive, space-constrained applications demanding dual-channel synchronization, low power, and simplified system integration.
FAQ
What is the guaranteed operating temperature range for the AD9218BSTZ-RL80?
The AD9218BSTZ-RL80 is specified for industrial temperature operation from –40°C to +85°C. All DC and AC specifications-including no-missing-codes guarantee, SNR, and crosstalk-are validated across this full range. The device's thermal resistance (θA) is 57°C/W on a 4-layer board with solid ground plane, supporting reliable operation in enclosed handheld enclosures.
Does the AD9218BSTZ-RL80 require an external reference voltage?
No, the AD9218BSTZ-RL80 includes an internal 1.24 V reference (REFOUT) that can directly drive REFINA and REFINB pins. This eliminates the need for an external reference in most applications. External references may be used for tighter accuracy or custom full-scale ranges, but the internal reference guarantees ±0.05 V tolerance and ±40 ppm/°C drift-sufficient for ultrasound and test equipment.
How does the DFS/GAIN pin configure analog input range and output coding on the AD9218BSTZ-RL80?
The DFS/GAIN pin on the AD9218BSTZ-RL80 controls both functions: logic low selects offset binary output with 1 Vp-p input range; logic high selects twos complement output with 1 Vp-p range; floating or tied to VREF enables 2 Vp-p range with corresponding output format. This single-pin flexibility simplifies system-level configuration without firmware changes or additional GPIOs.
What is the pipeline latency of the AD9218BSTZ-RL80, and how does it affect system timing?
The AD9218BSTZ-RL80 has a fixed 5-cycle pipeline delay from ENCA/ENCB rising edge to valid D0A–D9A or D0B–D9B output. For example, at 80 MSPS (12.5 ns period), latency is 62.5 ns. This deterministic delay enables precise time-of-flight calculations in ultrasound and predictable data alignment in I/Q receivers-no dynamic recalibration needed across temperature or supply variations.
Can the AD9218BSTZ-RL80 operate with only one channel active to save power?
Yes, the AD9218BSTZ-RL80 supports independent channel power-down via S1/S2 pins. Setting S1=0, S2=1 disables Channel B only, reducing total power by ~50% (to ~275 mW) while keeping Channel A fully operational. In this mode, Channel B outputs go high-impedance, and Channel A maintains full performance-ideal for battery-powered devices needing adaptive channel allocation.
AD9218BSTZ-RL80 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 48-LQFP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 10
- Sampling Rate (Per Second):
- 80M
- Number of Inputs:
- 2
- Input Type:
- Differential, Single Ended
- Data Interface:
- Parallel
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 2
- Architecture:
- Pipelined
- Reference Type:
- Internal
- Voltage - Supply, Analog:
- 2.7V ~ 3.6V
- Voltage - Supply, Digital:
- 2.7V ~ 3.6V
- Features:
- Simultaneous Sampling
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 48-LQFP (7x7)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD9218BSTZ-RL80 FAQ
1.How can I place an order for AD9218BSTZ-RL80 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD9218BSTZ-RL80 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 AD9218BSTZ-RL80 reliable?
The price and inventory of AD9218BSTZ-RL80 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD9218BSTZ-RL80 is usually 5 days.
3.What payment methods are accepted for AD9218BSTZ-RL80?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD9218BSTZ-RL80 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD9218BSTZ-RL80?
AD9218BSTZ-RL80 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD9218BSTZ-RL80 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 AD9218BSTZ-RL80?
For technical support, including AD9218BSTZ-RL80 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD9218BSTZ-RL80 requirements.
6.How does Aetrix verify that AD9218BSTZ-RL80 is sourced from the original manufacturer or authorized distributors?
All AD9218BSTZ-RL80 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 AD9218BSTZ-RL80 meets industry standards.
7.What is the process for return or replacement of AD9218BSTZ-RL80?
All AD9218BSTZ-RL80 units undergo pre-shipment inspection (PSI). If there is an issue with AD9218BSTZ-RL80, 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 AD9218BSTZ-RL80 part is unused and in its original packaging.
Return procedure for AD9218BSTZ-RL80:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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