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Analog Devices Inc. AD9237BCPZRL7-40
- Part No.:
- AD9237BCPZRL7-40
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 32-WFQFN Exposed Pad, CSP
- Datasheet:
-
AD9237BCPZRL7-40.pdf
- Description:
- IC ADC 12BIT PIPELINED 32LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:4,567
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Product details
Overview
AD9237BCPZRL7-40 from Analog Devices is a 12-bit, 40 MSPS monolithic analog-to-digital converter operating from a single 3 V supply. It features a differential sample-and-hold amplifier with 500 MHz input bandwidth, 66.5 dBc SNR at Nyquist, ±0.7 LSB DNL, and flexible 1–4 Vp-p input range. It serves as the front-end digitizer in battery-powered ultrasound imaging systems requiring low power and high dynamic performance.
For engineers reviewing the AD9237BCPZRL7-40 datasheet, AD9237BCPZRL7-40 pinout, AD9237BCPZRL7-40 application, or AD9237BCPZRL7-40 equivalent, key selection criteria include its 40 MSPS throughput, 135 mW power consumption at full rate, clock duty cycle stabilizer (DCS), two-step power-down, and OTR out-of-range indicator - all critical for portable medical and test equipment design.
Technical Context
The AD9237BCPZRL7-40 implements a 10-stage 1½-bit pipeline architecture with output error correction logic, guaranteeing no missing codes over −40°C to +85°C. Its patented differential SHA supports both ac- and dc-coupled inputs and maintains linearity up to 70 MHz input frequency.
It integrates an internal 1.0 V reference with ±25 mV output error, configurable via MODE2 and SENSE pins for 0.5 V or 1.0 V operation. Digital outputs are driven from a separate DRVDD supply (2.25–3.6 V), enabling compatibility with 2.5 V or 3.3 V logic families while isolating analog and digital noise paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - delivers 4096 discrete output levels for precision digitization of analog sensor or RF signals. |
| Sampling Rate | 40 MSPS - supports real-time capture of baseband signals up to 20 MHz (Nyquist-limited) without aliasing. |
| SNR @ 40 MSPS | 66.5 dBc to Nyquist - enables >10.7 ENOB for accurate representation of low-amplitude signal components. |
| Power Consumption | 135 mW at 40 MSPS - allows integration into thermally constrained handheld instruments with minimal heat dissipation. |
| Differential Nonlinearity | ±0.7 LSB - ensures monotonic transfer function and eliminates code gaps across full temperature range. |
| Analog Input Bandwidth | 500 MHz - preserves fidelity of fast-rising transients and wideband signals without external amplification. |
| Input Voltage Range | Selectable 1 Vp-p to 4 Vp-p - simplifies interface with diverse signal sources (e.g., ultrasound transducers, op-amp outputs). |
| Aperture Jitter | 0.5 ps rms - minimizes sampling uncertainty, critical for high-frequency signal integrity and SFDR performance. |
Pinout & Package
The AD9237BCPZRL7-40 is housed in a 32-lead LFCSP (5 mm × 5 mm, 0.8 mm height) with exposed paddle soldered to AGND for thermal and electrical stability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN+, VIN− | Differential analog input | Accepts fully differential signal; common-mode voltage centered at AVDD/2 for optimal linearity and noise rejection. |
| CLK | Sampling clock input | Rising-edge triggered; includes integrated duty cycle stabilizer to tolerate 30–70% clock asymmetry without performance loss. |
| OE | Output enable (active low) | Tri-states D0–D11 and OTR outputs for bus sharing or multiplexed data acquisition architectures. |
| PDWN | Power-down control | Two-step mode: standby (20 mW) and full power-down (1 mW) for rapid wake-up or extended sleep in portable devices. |
| OTR | Out-of-range indicator | Asserts high when input exceeds selected span - enables real-time clipping detection and automatic gain control feedback. |
| D0–D11 | Parallel digital outputs | 12-bit parallel CMOS outputs referenced to DRVDD; support offset binary, twos complement, or gray code formats via GC pin. |
| MODE2 | SHA gain & power scaling | Selects input range and reduces power proportionally at lower sampling rates - e.g., 20 MSPS operation draws only 85 mW. |
| REFB / REFT | Differential reference terminals | Interface with internal 1.0 V reference or external source; require 10 µF decoupling capacitor between REFT and REFB. |
Key Features
| Feature | Design Value |
|---|---|
| Ultralow power at 40 MSPS | 135 mW total consumption - enables 4+ hour battery life in handheld scope meters using dual-cell Li-ion packs. |
| Flexible input range selection | 1 Vp-p to 4 Vp-p via MODE2 and SENSE pins - eliminates need for external gain stages when interfacing with variable-output sensors. |
| Integrated clock duty cycle stabilizer | Compensates for clock asymmetry without external PLL - reduces board-level timing margining effort and BOM count. |
| Two-step power management | Standby (20 mW) and full power-down (1 mW) modes - supports responsive wake-up (<3 µs) and deep-sleep states for energy harvesting applications. |
| Out-of-range detection | Dedicated OTR pin asserts within 2 conversion cycles of overrange event - enables closed-loop AGC in ultrasound beamforming systems. |
| Separate digital driver supply | DRVDD (2.25–3.6 V) isolates digital switching noise from analog section - improves SNR by >2 dB in mixed-signal PCB layouts. |
Applications
| Ultrasound Imaging Front-End | Battery-Powered Oscilloscope |
|---|---|
|
Use Scenario: Digitizing echo return signals from piezoelectric transducers in portable ultrasound probes. IC Role / Device Role / Timing Role: Primary ADC capturing 10–20 MHz RF envelope data at 40 MSPS with <0.5 ps aperture jitter. Use Value: 66.5 dBc SNR preserves weak tissue boundary reflections; OTR flag triggers dynamic gain adjustment to prevent saturation during near-field imaging. |
Use Scenario: Real-time waveform capture in handheld 100 MHz bandwidth oscilloscopes powered by rechargeable batteries. IC Role / Device Role / Timing Role: High-speed digitizer sampling analog front-end output with pipeline latency of exactly 9 clock cycles. Use Value: 135 mW power draw extends runtime per charge; DCS tolerates imperfect clock sources from low-cost crystal oscillators. |
| Low-Power Digital Still Camera | Portable Spectrum Analyzer |
|
Use Scenario: Converting CCD/CMOS sensor analog outputs in compact digital cameras with strict thermal limits. IC Role / Device Role / Timing Role: Precision ADC handling variable-gain analog chain output with selectable 1–4 Vp-p input range. Use Value: ±0.7 LSB DNL ensures accurate color channel quantization; 500 MHz input bandwidth supports fast pixel readout timing. |
Use Scenario: Baseband I/Q sampling in field-deployable RF analyzers measuring signals up to 35 MHz. IC Role / Device Role / Timing Role: Dual-channel ADC subsystem digitizing downconverted IF signals with synchronized sampling clocks. Use Value: 80 dBc SFDR at 40 MSPS suppresses spurious artifacts in spectrum display; separate DRVDD prevents digital noise coupling into sensitive RF path. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed, low-power ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9226ARZ | 12-bit, 65 MSPS, 3.3 V supply, no integrated DCS or OTR; higher 250 mW power at full rate. | Lacks out-of-range flag and clock stabilizer - requires external circuitry for clipping detection and clock conditioning. | Choose when maximum sampling rate (65 MSPS) outweighs power and feature trade-offs in fixed-power mains-operated systems. |
| ADS5272IPFP | 12-bit, 40 MSPS, 1.8 V core / 3.3 V I/O, 110 mW typical power, no internal reference, requires external REF. | Lower supply voltage reduces system-level power but increases layout complexity due to dual-supply and external reference routing. | Prefer for ultra-low-power battery designs where external reference control and 1.8 V logic compatibility are prioritized over integration. |
Compared with AD9237BCPZRL7-40, AD9226ARZ offers higher speed but sacrifices power efficiency and integrated diagnostics, while ADS5272IPFP achieves lower active power at the cost of reference and supply flexibility - making AD9237BCPZRL7-40 optimal for portable medical and test gear balancing integration, accuracy, and thermal constraints.
Availability
AD9237BCPZRL7-40 is available at Aetrix Electronics and suitable for ultrasound imaging systems, handheld oscilloscopes, and portable spectrum analyzers requiring stable component supply, long-term manufacturability, and guaranteed industrial temperature range (−40°C to +85°C) performance.
Supply support for AD9237BCPZRL7-40 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 operations worldwide.
The AD9237 family was designed specifically for low-power, high-fidelity digitization in portable medical, instrumentation, and communications equipment - emphasizing ultralow power, integrated reference, and robust analog input architecture.
FAQ
What is the maximum sampling rate supported by the AD9237BCPZRL7-40?
The AD9237BCPZRL7-40 is rated for a maximum conversion rate of 40 MSPS, as confirmed in Table 4 of the Rev. C datasheet. This rate is validated across the full industrial temperature range (−40°C to +85°C) with AVDD = 3 V and DRVDD = 2.5 V. The device maintains specified SNR (66.5 dBc) and SFDR (80 dBc) performance at this rate under standard test conditions.
Does the AD9237BCPZRL7-40 include an internal voltage reference?
Yes, the AD9237BCPZRL7-40 integrates a factory-trimmed 1.0 V internal reference with ±25 mV output error over temperature. It also supports 0.5 V mode via the SENSE pin. Reference output appears on the VREF pin and is used with REFT/REFB for differential reference configuration - eliminating need for external reference ICs in most implementations of AD9237BCPZRL7-40.
How does the clock duty cycle stabilizer (DCS) function in the AD9237BCPZRL7-40?
The DCS in AD9237BCPZRL7-40 actively corrects clock pulse width asymmetry, allowing reliable operation with input clock duty cycles from 30% to 70%. Enabled via the MODE pin, it reduces sensitivity to oscillator jitter and PCB trace skew - preserving SNR and SFDR without requiring external clock conditioning circuits in the AD9237BCPZRL7-40 design.
What is the purpose of the OTR pin on the AD9237BCPZRL7-40?
The OTR (Out-of-Range) pin on AD9237BCPZRL7-40 is a dedicated comparator output that asserts high when the differential analog input exceeds the selected full-scale range (e.g., ±2 V for 4 Vp-p mode). It responds within 2 conversion cycles and supports real-time gain control loops - a key diagnostic feature not found in many competing 12-bit ADCs like the AD9226ARZ.
Can the AD9237BCPZRL7-40 operate with a 2.5 V digital supply while using a 3 V analog supply?
Yes, the AD9237BCPZRL7-40 explicitly supports split supplies: AVDD = 3 V for analog circuitry and DRVDD = 2.5 V for digital outputs. This is specified in Tables 1 and 2 of the datasheet and enables direct interfacing with 2.5 V logic families while maintaining optimal analog performance - a critical capability confirmed for AD9237BCPZRL7-40 in mixed-voltage system designs.
AD9237BCPZRL7-40 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:
- -
AD9237BCPZRL7-40 FAQ
1.How can I place an order for AD9237BCPZRL7-40 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD9237BCPZRL7-40 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 AD9237BCPZRL7-40 reliable?
The price and inventory of AD9237BCPZRL7-40 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD9237BCPZRL7-40 is usually 5 days.
3.What payment methods are accepted for AD9237BCPZRL7-40?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD9237BCPZRL7-40 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD9237BCPZRL7-40?
AD9237BCPZRL7-40 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD9237BCPZRL7-40 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 AD9237BCPZRL7-40?
For technical support, including AD9237BCPZRL7-40 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD9237BCPZRL7-40 requirements.
6.How does Aetrix verify that AD9237BCPZRL7-40 is sourced from the original manufacturer or authorized distributors?
All AD9237BCPZRL7-40 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 AD9237BCPZRL7-40 meets industry standards.
7.What is the process for return or replacement of AD9237BCPZRL7-40?
All AD9237BCPZRL7-40 units undergo pre-shipment inspection (PSI). If there is an issue with AD9237BCPZRL7-40, 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 AD9237BCPZRL7-40 part is unused and in its original packaging.
Return procedure for AD9237BCPZRL7-40:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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