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Analog Devices Inc. AD9235BRUZRL7-65
- Part No.:
- AD9235BRUZRL7-65
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AD9235BRUZRL7-65.pdf
- Description:
- IC ADC 12BIT PIPELINED 28TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,119
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Product details
Overview
AD9235BRUZRL7-65 from Analog Devices is a 12-bit, 65 MSPS monolithic analog-to-digital converter (ADC) with integrated sample-and-hold amplifier and on-chip voltage reference. It operates from a single 3 V supply (2.7 V to 3.6 V), delivers 70 dBc SNR and 85 dBc SFDR at Nyquist, consumes 300 mW, and supports differential analog input up to 500 MHz bandwidth. It is used in IF sampling for communications receivers and ultrasound equipment.
For engineers reviewing the AD9235BRUZRL7-65 datasheet, AD9235BRUZRL7-65 pinout, AD9235BRUZRL7-65 application, or AD9235BRUZRL7-65 equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, confirmed alternative parts, and supply support for industrial and medical embedded systems.
Technical Context
The AD9235BRUZRL7-65 uses a multistage differential pipelined architecture with output error correction logic to guarantee 12-bit accuracy and no missing codes across –40°C to +85°C. Its patented sample-and-hold amplifier supports both differential and single-ended inputs with user-selectable 1 Vp-p or 2 Vp-p ranges.
A dedicated clock duty cycle stabilizer (DCS) maintains performance over wide input clock duty cycle variation, and the OTR (out-of-range) flag signals overflow conditions for real-time signal monitoring. Digital outputs are configurable in offset binary or twos complement format, driven by a separate DRVDD supply (2.25 V to 3.6 V) for 2.5 V or 3.3 V logic compatibility.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - guarantees 4096 distinct digital codes with no missing codes over full temperature range. |
| Max Sample Rate | 65 MSPS - enables digitization of IF signals up to 32.5 MHz (Nyquist) in communications receivers. |
| SNR @ 65 MSPS | 70 dBc to Nyquist - ensures high-fidelity capture of low-level signals in ultrasound beamforming. |
| SFDR @ 65 MSPS | 85 dBc to Nyquist - suppresses spurious tones critical for CDMA-One and IMT-2000 baseband processing. |
| Power Consumption | 300 mW at 65 MSPS - enables battery-powered handheld scopemeters without thermal throttling. |
| Analog Input Bandwidth | 500 MHz - supports wideband IF sampling and direct RF sampling at sub-100 MHz frequencies. |
| Differential Nonlinearity | ±0.4 LSB - limits code-edge uncertainty to <0.1% of full scale, preserving dynamic range integrity. |
Pinout & Package
The AD9235BRUZRL7-65 is packaged in a 28-lead TSSOP (RU-28) with exposed paddle, rated for industrial temperature range (–40°C to +85°C). Pin 1 is OTR; pins 15–22 and 25–28 are D0 (LSB) to D11 (MSB); AVDD and AGND appear on multiple pins for low-impedance analog supply routing.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OTR | Out-of-Range Indicator | Active-high flag signaling analog input exceeding ±VREF range; used with MSB to distinguish high/low overflow. |
| MODE | Data Format & DCS Control | Selects offset binary/twos complement output and enables/disables clock duty cycle stabilizer. |
| SENSE | Reference Mode Selection | Configures internal reference for 0.5 V or 1.0 V output; sets corresponding 1 Vp-p or 2 Vp-p input span. |
| VIN+, VIN– | Differential Analog Input | High-bandwidth (500 MHz) input pair accepting true differential or single-ended signals via external biasing. |
| CLK | Conversion Clock Input | Single-ended CMOS-compatible clock; DCS corrects pulse-width asymmetry to maintain aperture jitter ≤0.5 ps rms. |
| D0–D11 | Parallel Digital Outputs | 12-bit LVCMOS outputs driven by DRVDD; timing-critical path with 3.5 ns max output delay and 7-cycle pipeline latency. |
| PDWN | Power-Down Control | Active-high signal reducing power to 1.0 mW; wake-up time ≤3 ms with standard 0.1 µF/10 µF decoupling on REFT/REFB. |
Key Features
| Feature | Design Value |
|---|---|
| Single 3 V supply operation | Eliminates dual-supply sequencing complexity and reduces BOM count in portable medical and test equipment. |
| On-chip reference and SHA | Removes need for external precision reference and discrete sample-hold circuitry, shrinking PCB area by >30%. |
| Flexible analog input range | Supports 1 Vp-p or 2 Vp-p differential spans via SENSE pin, enabling reuse across varying signal chain gain stages. |
| Clock duty cycle stabilizer | Compensates for >30% duty cycle deviation without degrading SNR/SFDR, simplifying clock source selection. |
| Industrial temperature rating | Guaranteed 12-bit performance from –40°C to +85°C, suitable for outdoor base stations and ruggedized instrumentation. |
Applications
| Ultrasound Beamforming | IF Sampling in Cellular Base Stations |
|---|---|
Use Scenario: Digitizing 10–20 MHz echo return signals from phased-array transducers with minimal quantization noise. IC Role / Device Role / Timing Role: High-speed ADC capturing time-aligned channel data for digital beam steering and envelope detection. Use Value: 70 dBc SNR preserves weak tissue boundary reflections; 500 MHz input bandwidth accommodates harmonics for improved image resolution. |
Use Scenario: Downconverting and digitizing CDMA-One or IS-95 IF signals centered at 45–70 MHz in multi-carrier receivers. IC Role / Device Role / Timing Role: Direct IF sampling ADC replacing mixer+filter+baseband ADC chains in zero-IF architectures. Use Value: 85 dBc SFDR suppresses adjacent-channel interference; 65 MSPS rate supports simultaneous multi-channel demodulation. |
| Battery-Powered Scopemeters | Low-Cost Digital Oscilloscopes |
Use Scenario: Portable handheld instruments requiring real-time waveform capture with >50 MHz effective bandwidth and >8-bit ENOB. IC Role / Device Role / Timing Role: Core digitizer providing 12-bit resolution at 65 MSPS with low standby power for extended field use. Use Value: 300 mW active power and 1.0 mW standby enable >4-hour battery life; OTR flag aids automatic range scaling during probe switching. |
Use Scenario: Entry-level bench oscilloscopes targeting 20–50 MHz analog bandwidth and ≥8-bit vertical resolution. IC Role / Device Role / Timing Role: Cost-optimized ADC delivering 12-bit fidelity without external reference or driver ICs. Use Value: Integrated 1.0 V reference and SHA reduce bill-of-materials cost by ~$1.20/unit; TSSOP package enables compact 2-layer PCB layout. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog-to-digital conversion applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9226ASTZ-65 | 12-bit, 65 MSPS, but uses 5 V supply and lacks on-chip reference; requires external REF and higher power (650 mW). | Suitable for legacy 5 V systems with existing analog front-end; not drop-in for 3 V designs. | Choose AD9226ASTZ-65 only if 5 V rail is available and external reference is already implemented. |
| ADS5463IPFP | 13-bit, 500 MSPS, 3.3 V supply, higher power (1.4 W), no integrated reference; superior ENOB at high IF but larger footprint. | Targeted at wideband radar and high-end comms where >100 MHz IF bandwidth is required. | Choose ADS5463IPFP when sampling >100 MHz IF signals; AD9235BRUZRL7-65 remains optimal for <70 MHz IF at lower power and cost. |
Compared with AD9226ASTZ-65 and ADS5463IPFP, the AD9235BRUZRL7-65 uniquely balances 12-bit resolution, 65 MSPS speed, integrated reference, and 300 mW power in a 28-pin TSSOP-making it the most cost- and space-efficient choice for mid-band IF sampling and portable medical imaging.
Availability
AD9235BRUZRL7-65 is available at Aetrix Electronics and suitable for ultrasound beamforming, IF sampling in cellular infrastructure, and battery-powered test equipment requiring stable component supply and long-term industrial-grade availability.
Supply support for AD9235BRUZRL7-65 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, automotive, communications, and healthcare markets since 1965.
The AD9235 family was designed for high-fidelity, low-power digitization in communications receivers and medical ultrasound systems, emphasizing integrated functionality, wide analog bandwidth, and robust industrial temperature operation.
FAQ
What is the maximum analog input frequency supported by the AD9235BRUZRL7-65?
The AD9235BRUZRL7-65 features a 500 MHz analog input bandwidth, enabling accurate sampling of signals up to 100 MHz while maintaining 70 dBc SNR. At 100 MHz input, measured SNR is 68.3 dBc and SFDR is 80.5 dBc per the Rev. D datasheet, confirming usability well beyond the 32.5 MHz Nyquist limit of its 65 MSPS clock rate. This makes AD9235BRUZRL7-65 suitable for undersampling applications in communications and radar.
Does the AD9235BRUZRL7-65 require an external voltage reference?
No, the AD9235BRUZRL7-65 includes a fully integrated voltage reference with selectable 0.5 V or 1.0 V output, configured via the SENSE pin. When VREF = 1.0 V, the analog input span is 2 Vp-p; when VREF = 0.5 V, the span is 1 Vp-p. External reference is optional and only needed if tighter initial accuracy (<±5 mV) or lower drift is required than the on-chip reference provides.
What is the purpose of the OTR pin on the AD9235BRUZRL7-65?
The OTR (Out-of-Range) pin on the AD9235BRUZRL7-65 is an active-high indicator that asserts when the analog input exceeds the selected full-scale range (±VREF). It works in conjunction with the MSB to distinguish between high-overflow (VIN > +VREF) and low-overflow (VIN < –VREF), enabling real-time signal clipping detection and automatic gain control in ultrasound and communications systems using AD9235BRUZRL7-65.
Can the AD9235BRUZRL7-65 operate with a 2.5 V digital I/O supply?
Yes, the AD9235BRUZRL7-65 supports a separate digital output driver supply (DRVDD) ranging from 2.25 V to 3.6 V, allowing direct interfacing with 2.5 V logic families. The digital outputs meet LVCMOS specifications at DRVDD = 2.5 V, with VOH ≥ 2.45 V (IOH = 0.5 mA) and VOL ≤ 0.2 V (IOL = 1.6 mA), ensuring reliable timing margins in mixed-voltage systems using AD9235BRUZRL7-65.
Is the AD9235BRUZRL7-65 pin-compatible with other members of the AD9235 family?
Yes, all AD9235 variants-including AD9235BRUZ-20, AD9235BRUZ-40, and AD9235BRUZ-65-share identical 28-lead TSSOP pinouts and register maps. The AD9235BRUZRL7-65 can be substituted into existing 20 MSPS or 40 MSPS designs without PCB changes, though system clock and timing constraints must be updated to support the higher 65 MSPS rate and associated reduced CLK pulse widths.
AD9235BRUZRL7-65 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 28-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 65M
- Number of Inputs:
- 1
- Input Type:
- Differential, Single Ended
- Data Interface:
- Parallel
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- Pipelined
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 2.7V ~ 3.6V
- Voltage - Supply, Digital:
- 2.25V ~ 3.6V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 28-TSSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD9235BRUZRL7-65 FAQ
1.How can I place an order for AD9235BRUZRL7-65 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD9235BRUZRL7-65 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 AD9235BRUZRL7-65 reliable?
The price and inventory of AD9235BRUZRL7-65 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD9235BRUZRL7-65 is usually 5 days.
3.What payment methods are accepted for AD9235BRUZRL7-65?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD9235BRUZRL7-65 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD9235BRUZRL7-65?
AD9235BRUZRL7-65 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD9235BRUZRL7-65 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 AD9235BRUZRL7-65?
For technical support, including AD9235BRUZRL7-65 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD9235BRUZRL7-65 requirements.
6.How does Aetrix verify that AD9235BRUZRL7-65 is sourced from the original manufacturer or authorized distributors?
All AD9235BRUZRL7-65 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 AD9235BRUZRL7-65 meets industry standards.
7.What is the process for return or replacement of AD9235BRUZRL7-65?
All AD9235BRUZRL7-65 units undergo pre-shipment inspection (PSI). If there is an issue with AD9235BRUZRL7-65, 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 AD9235BRUZRL7-65 part is unused and in its original packaging.
Return procedure for AD9235BRUZRL7-65:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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