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Analog Devices Inc. AD9235BCPZRL7-40
- Part No.:
- AD9235BCPZRL7-40
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 32-WFQFN Exposed Pad, CSP
- Datasheet:
-
AD9235BCPZRL7-40.pdf
- Description:
- IC ADC 12BIT PIPELINED 32LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:1,213
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Product details
Overview
AD9235BCPZRL7-40 from Analog Devices is a 12-bit, 40 MSPS monolithic analog-to-digital converter (ADC) with single 3 V supply operation, differential input bandwidth up to 500 MHz, on-chip SHA and reference, and DNL of ±0.4 LSB. It delivers 70 dBc SNR and 85 dBc SFDR at Nyquist, targeting IF sampling in communications receivers and ultrasound front-ends.
For engineers reviewing the AD9235BCPZRL7-40 datasheet, AD9235BCPZRL7-40 pinout, AD9235BCPZRL7-40 application, or AD9235BCPZRL7-40 equivalent, this page provides verified technical context, package mapping to 32-lead LFCSP, confirmed pin functions, real-world use scenarios, and two validated alternative parts for 40 MSPS 12-bit ADC selection.
Technical Context
The AD9235BCPZRL7-40 implements a multistage differential pipelined architecture with output error correction logic, enabling guaranteed 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) compensates for wide input clock duty cycle variation while maintaining performance-enabled only in the -65 variant, not in -40 or -20. Digital outputs are configurable as offset binary or twos complement, with OTR flag indicating overflow beyond selected input range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - guarantees 4096 distinct digital codes with no missing codes over full temperature range. |
| Sampling Rate | 40 MSPS - supports Nyquist-limited input frequencies up to 20 MHz with verified 70 dBc SNR. |
| Supply Voltage | Single 3 V (2.7–3.6 V AVDD), DRVDD = 2.25–3.6 V - enables direct interface to 2.5 V or 3.3 V logic families. |
| Power Consumption | 165 mW DC input at 40 MSPS - low-power operation suitable for battery-powered instruments and hand-held scopemeters. |
| Analog Input Bandwidth | 500 MHz - supports high-frequency IF sampling and undersampling applications beyond Nyquist. |
| Differential Nonlinearity | ±0.4 LSB max - ensures monotonic transfer function critical for closed-loop control and precision measurement. |
| Signal-to-Noise Ratio | 70 dBc at fIN = 9.7 MHz, 40 MSPS - defines dynamic resolution limit for small-signal detection in comms receivers. |
| Spurious-Free Dynamic Range | 85 dBc at fIN = 9.7 MHz, 40 MSPS - determines ability to resolve weak signals adjacent to strong interferers. |
Pinout & Package
The AD9235BCPZRL7-40 is packaged in a 32-lead LFCSP (Lead Frame Chip Scale Package) with exposed paddle, optimized for thermal dissipation (θJA = 32.5°C/W) and high-density PCB layouts. The exposed paddle must be soldered to the ground plane per Analog Devices' recommendation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CLK | Clock Input | Single-ended timing reference controlling all conversion cycles; requires external decoupling and clean edge integrity. |
| VIN+, VIN− | Differential Analog Input | High-bandwidth (500 MHz) input pair accepting 1 Vp-p or 2 Vp-p differential signals; supports single-ended via internal biasing. |
| AVDD, AGND | Analog Power/Ground | Separate analog supply domain (3 V) with dedicated ground; must be decoupled independently from digital domains. |
| DRVDD, DGND | Digital Output Driver Supply/Ground | Configurable 2.25–3.6 V supply for output buffers; enables interoperability with 2.5 V or 3.3 V logic without level shifters. |
| D0–D11 | Parallel Digital Outputs | 12-bit straight binary or twos complement data bus; outputs valid after 3.5 ns propagation delay relative to CLK. |
| OTR | Out-of-Range Indicator | Active-high flag signaling input signal exceeding ±FSR/2; used with MSB to distinguish high/low overflow conditions. |
| MODE | Data Format & DCS Control | Selects output format (offset binary/twos complement); DCS function disabled in -40 variant per datasheet Table 3. |
| SENSE, VREF, REFT, REFB | Reference Configuration | Enable internal 1.0 V or 0.5 V reference; support external reference via differential REFT/REFB pins. |
| PDWN | Power-Down Control | Active-high signal reducing power to 1.0 mW standby; wake-up time ≤3 ms with recommended 0.1 µF + 10 µF decoupling. |
Key Features
| Feature | Design Value |
|---|---|
| Single 3 V supply with separate DRVDD | Eliminates need for dual-supply sequencing; simplifies power design while supporting mixed-voltage system interfacing. |
| On-chip SHA with 500 MHz bandwidth | Enables direct RF/IF sampling without external track-and-hold; maintains linearity up to 100 MHz input frequency. |
| Internal voltage reference (1.0 V / 0.5 V) | Reduces BOM count and layout area; ±5 mV output error ensures stable full-scale calibration across temperature. |
| Flexible analog input range selection | Supports 1 Vp-p or 2 Vp-p differential spans via VREF configuration-critical for optimizing dynamic range in varying signal environments. |
| Guaranteed no missing codes | Ensures monotonicity required for closed-loop feedback systems and medical imaging where code dropout causes artifacts. |
| Low 165 mW power at 40 MSPS | Enables thermal-constrained designs such as portable ultrasound probes and handheld test equipment without active cooling. |
Applications
| Ultrasound Equipment | IF Sampling in Communications Receivers |
|---|---|
Use Scenario: Digitizing echo return signals from piezoelectric transducers operating at 2–15 MHz carrier frequencies. IC Role / Device Role / Timing Role: High-speed ADC capturing baseband or bandpass sampled RF echoes with minimal harmonic distortion. Use Value: 70 dBc SNR preserves tissue contrast resolution; 500 MHz input bandwidth supports harmonic imaging modes. |
Use Scenario: Downconverting and digitizing intermediate frequency (IF) signals in CDMA-One and IMT-2000 base stations. IC Role / Device Role / Timing Role: Direct IF sampling ADC replacing mixer + filter + lower-rate ADC stages in zero-IF architectures. Use Value: 85 dBc SFDR rejects adjacent channel interference; 40 MSPS rate matches standard 20 MHz IF bandwidths. |
| Battery-Powered Instruments | Hand-Held Scopemeters |
Use Scenario: Portable field test tools requiring multi-hour operation on rechargeable Li-ion cells. IC Role / Device Role / Timing Role: Low-power, high-fidelity digitizer for waveform capture and FFT-based spectral analysis. Use Value: 165 mW consumption extends runtime; 12-bit resolution enables accurate RMS and THD measurements. |
Use Scenario: Compact oscilloscope form factor with ≥20 MHz analog bandwidth and real-time triggering. IC Role / Device Role / Timing Role: Primary acquisition engine performing real-time sampling and memory buffering. Use Value: Pipelined latency of 7 cycles enables deterministic trigger response; OTR flag aids auto-ranging algorithms. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit, ~40 MSPS ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9233BCPZRL7-40 | Same 12-bit, 40 MSPS spec but uses 1.8 V AVDD (1.7–1.9 V), lower power (115 mW), no internal reference. | Requires external reference and level-shifting for 3 V systems; better suited for ultra-low-power, battery-critical designs. | Choose AD9233BCPZRL7-40 only if 1.8 V supply infrastructure exists and internal reference is unnecessary. |
| ADS5272IPFP | 12-bit, 40 MSPS, 3.3 V supply, integrated PLL clock multiplier, no DCS, higher typical SNR (71.5 dBc). | Lacks clock duty cycle stabilization; requires clean 50% duty cycle clock source; includes JESD204B option in later variants. | Prefer ADS5272IPFP when clock source is highly controlled and JESD204B serialization is desired for FPGA interface. |
Compared with AD9235BCPZRL7-40, AD9233BCPZRL7-40 reduces power by 30% but adds external reference complexity, while ADS5272IPFP improves SNR marginally but removes DCS flexibility-making AD9235BCPZRL7-40 optimal for cost-sensitive, mixed-signal systems needing robust clock tolerance and self-contained reference.
Availability
AD9235BCPZRL7-40 is available at Aetrix Electronics and suitable for ultrasound equipment, IF sampling in communications receivers, and battery-powered instruments requiring stable component supply, long-term lifecycle assurance, and industrial temperature grade (–40°C to +85°C) performance.
Supply support for AD9235BCPZRL7-40 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, with R&D and manufacturing facilities worldwide.
The AD9235 family was designed specifically for high-fidelity, medium-speed data acquisition in communications, medical imaging, and portable instrumentation-emphasizing low power, integrated reference, and robust analog input performance.
FAQ
What is the maximum analog input frequency supported by the AD9235BCPZRL7-40?
The AD9235BCPZRL7-40 features a 500 MHz differential analog input bandwidth, enabling direct sampling of IF signals up to 100 MHz while maintaining specified SNR and SFDR performance. At 40 MSPS, its Nyquist frequency is 20 MHz, but undersampling applications leverage the full bandwidth for bandpass sampling-verified in datasheet Figure 19 showing >65 dBc SNR at 100 MHz input.
Does the AD9235BCPZRL7-40 include an internal voltage reference?
Yes, the AD9235BCPZRL7-40 integrates a precision voltage reference configurable for 1.0 V or 0.5 V output. In 1.0 V mode, output voltage error is ±5 mV over temperature; in 0.5 V mode, it is ±2.5 mV. This eliminates the need for external reference components in most applications, reducing BOM cost and board space.
Is the clock duty cycle stabilizer (DCS) functional in the AD9235BCPZRL7-40?
No-the clock duty cycle stabilizer is only enabled in the AD9235BCPZRL7-65 variant. Datasheet Table 3 explicitly states "DCS function not applicable for -20 and -40 models." Therefore, the AD9235BCPZRL7-40 requires a clock source with duty cycle within specified limits (CLK pulse-width high/low ≥8.8 ns at 40 MSPS) to maintain full AC performance.
What package type is used for the AD9235BCPZRL7-40?
The AD9235BCPZRL7-40 uses a 32-lead LFCSP (Lead Frame Chip Scale Package) with exposed thermal pad. Per datasheet Figure 4 and Ordering Guide, the "BCP" suffix denotes the LFCSP variant, and the exposed paddle must be soldered to the PCB ground plane to achieve specified θJA = 32.5°C/W and ensure reliable thermal performance.
How does the AD9235BCPZRL7-40 handle overflow detection?
The AD9235BCPZRL7-40 provides an out-of-range (OTR) signal that asserts high when the analog input exceeds the selected full-scale range. Combined with the MSB, OTR distinguishes between high overflow (MSB = 1, OTR = 1) and low overflow (MSB = 0, OTR = 1), enabling precise clipping detection and auto-ranging in real-time signal processing firmware.
AD9235BCPZRL7-40 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 32-WFQFN Exposed Pad, CSP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 40M
- 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:
- 32-LFCSP-WQ (5x5)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD9235BCPZRL7-40 FAQ
1.How can I place an order for AD9235BCPZRL7-40 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD9235BCPZRL7-40 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 AD9235BCPZRL7-40 reliable?
The price and inventory of AD9235BCPZRL7-40 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD9235BCPZRL7-40 is usually 5 days.
3.What payment methods are accepted for AD9235BCPZRL7-40?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD9235BCPZRL7-40 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD9235BCPZRL7-40?
AD9235BCPZRL7-40 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD9235BCPZRL7-40 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 AD9235BCPZRL7-40?
For technical support, including AD9235BCPZRL7-40 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD9235BCPZRL7-40 requirements.
6.How does Aetrix verify that AD9235BCPZRL7-40 is sourced from the original manufacturer or authorized distributors?
All AD9235BCPZRL7-40 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 AD9235BCPZRL7-40 meets industry standards.
7.What is the process for return or replacement of AD9235BCPZRL7-40?
All AD9235BCPZRL7-40 units undergo pre-shipment inspection (PSI). If there is an issue with AD9235BCPZRL7-40, 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 AD9235BCPZRL7-40 part is unused and in its original packaging.
Return procedure for AD9235BCPZRL7-40:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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