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Analog Devices Inc. AD9235BRUZRL7-40
- Part No.:
- AD9235BRUZRL7-40
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
AD9235BRUZRL7-40.pdf
- Description:
- IC ADC 12BIT PIPELINED 28TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,121
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Product details
Overview
AD9235BRUZRL7-40 from Analog Devices is a 12-bit, 40 MSPS monolithic analog-to-digital converter (ADC) operating from a single 3 V supply (2.7 V to 3.6 V). It features a differential sample-and-hold amplifier with 500 MHz input bandwidth, on-chip voltage reference, and clock duty cycle stabilizer - enabling high-fidelity IF sampling in communications receivers and ultrasound front-ends.
For engineers reviewing the AD9235BRUZRL7-40 datasheet, AD9235BRUZRL7-40 pinout, AD9235BRUZRL7-40 application, or AD9235BRUZRL7-40 equivalent, this page delivers verified specifications, validated pin functions for the 28-lead TSSOP package, real-world AC/DC performance at 40 MSPS, and two confirmed alternative ADCs with documented functional and packaging differences.
Technical Context
The AD9235BRUZRL7-40 implements a multistage differential pipelined architecture with output error correction logic, guaranteeing 12-bit accuracy and no missing codes across –40°C to +85°C. Its SHA supports user-selectable 1 Vp-p or 2 Vp-p differential input ranges and maintains <70 dBc SNR up to 32.5 MHz input frequency at 40 MSPS.
It uses a single-ended CMOS clock input with integrated duty cycle stabilizer (DCS), ensuring stable performance despite clock pulse-width variation. Digital outputs are configurable in offset binary or twos complement format, driven by a separate DRVDD supply (2.25 V to 3.6 V) compatible with 2.5 V or 3.3 V logic families.
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 ≥69.9 dBc SNR. |
| Supply Voltage | AVDD = 2.7–3.6 V, DRVDD = 2.25–3.6 V - enables low-power operation while supporting mixed-voltage system interfacing. |
| SNR / SFDR | 70.0 dBc / 80.0 dBc at fIN = 9.7 MHz - defines usable dynamic range for IF digitization in CDMA-One and IS-95 baseband processing. |
| DNL / INL | ±0.35 LSB / ±0.50 LSB max - ensures monotonicity and linearity critical for medical imaging waveform fidelity. |
| Input Bandwidth | 500 MHz - allows direct sampling of wideband RF/IF signals without external amplification or filtering degradation. |
| Power Consumption | 165 mW at 40 MSPS - balances performance and thermal budget in battery-powered scopemeters and handheld diagnostics. |
Pinout & Package
The AD9235BRUZRL7-40 is packaged in a 28-lead TSSOP (RU-28) with exposed paddle, specified for industrial temperature range (–40°C to +85°C). Pin 1 is OTR (Out-of-Range indicator); pins 15–22 and 25–28 carry D0 (LSB) through D11 (MSB) data outputs; CLK is on pin 13; MODE (pin 2) controls data format and DCS enable; SENSE (pin 3) selects internal reference mode.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| OTR (Pin 1) | Overflow detection output | Active-high signal indicating input exceeds selected range; used with MSB to distinguish high/low overflow conditions. |
| MODE (Pin 2) | Data format and DCS control | Configures output coding (offset binary/twos complement) and enables/disables clock duty cycle stabilizer. |
| SENSE (Pin 3) | Reference mode selection | Connects to AGND for 1.0 V internal reference or AVDD for 0.5 V mode - sets full-scale input span (2 Vp-p or 1 Vp-p). |
| VIN+, VIN– (Pins 9, 10) | Differential analog input | High-bandwidth (500 MHz) inputs accepting true differential or single-ended signals via external resistor network. |
| CLK (Pin 13) | Master sampling clock | Single-ended CMOS input; DCS circuit compensates for duty cycle variation to maintain aperture jitter ≤0.5 ps rms. |
| D0–D11 (Pins 15–22, 25–28) | Parallel digital output bus | 12-bit straight binary or twos complement data; outputs valid after 3.5 ns propagation delay with 7-cycle pipeline latency. |
| PDWN (Pin 14) | Power-down control | Active-high signal reducing power to 1.0 mW standby; wake-up time is 3.0 ms with standard decoupling (0.1 µF + 10 µF). |
Key Features
| Feature | Design Value |
|---|---|
| Single 3 V supply operation | Eliminates dual-supply design complexity and reduces BOM count while maintaining 70 dBc SNR at 40 MSPS. |
| On-chip reference and SHA | Removes need for external precision reference and input buffer, simplifying layout and improving noise immunity in IF sampling paths. |
| Flexible analog input range | Supports 1 Vp-p or 2 Vp-p differential spans via SENSE pin - adapts to varying signal chain gain without redesign. |
| Output error correction logic | Guarantees no missing codes and ≤±0.50 LSB INL over temperature - essential for accurate waveform reconstruction in ultrasound beamforming. |
| Clock duty cycle stabilizer | Compensates for >30% clock duty cycle variation while preserving SNR/SFDR - enables robust timing in FPGA-driven sampling systems. |
Applications
| Ultrasound Imaging Front-End | CDMA-One Baseband Receiver |
|---|---|
|
Use Scenario: Digitizing echo return signals from phased-array transducers with 10–20 MHz center frequency and wide dynamic range. IC Role / Device Role / Timing Role: High-speed ADC capturing RF envelope data at 40 MSPS with precise amplitude resolution for beam synthesis. Use Value: 70.0 dBc SNR at 9.7 MHz and ±0.35 LSB DNL preserve tissue contrast and spatial resolution in B-mode imaging. |
Use Scenario: Intermediate-frequency sampling in CDMA-One cellular base stations operating at 45–55 MHz IF. IC Role / Device Role / Timing Role: IF-to-digital converter synchronizing with FPGA-based demodulator using embedded clock recovery. Use Value: 80.0 dBc SFDR at 9.7 MHz suppresses adjacent-channel interference during multi-user signal separation. |
| Battery-Powered Scopemeter | Low-Cost Digital Oscilloscope |
|
Use Scenario: Portable field diagnostic tool requiring 40 MSPS sampling, 12-bit depth, and sub-200 mW total power draw. IC Role / Device Role / Timing Role: Core ADC in handheld scope architecture, interfacing directly to ARM Cortex-M7 MCU via parallel bus. Use Value: 165 mW power at 40 MSPS and 3 V supply extends battery life while maintaining 20 MHz effective analog bandwidth. |
Use Scenario: Entry-level bench oscilloscope targeting 20–40 MSPS real-time sampling with 12-bit vertical resolution. IC Role / Device Role / Timing Role: Primary digitizer feeding FPGA-based memory controller and display engine. Use Value: Pin-compatible upgrade path from AD9214-65 (10-bit) preserves PCB layout while doubling code density for improved waveform fidelity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9235BCPZ-40 | Same silicon die and specs, but in 32-lead LFCSP (CP-32-7) package with lower θJA = 32.5°C/W vs. TSSOP's 67.7°C/W. | Better thermal performance suits high-density, convection-cooled industrial boards where space and heat dissipation are constrained. | Select AD9235BCPZ-40 when board layout allows LFCSP footprint and thermal management requires <35°C/W junction-to-ambient resistance. |
| AD9240ASTZ-40 | 14-bit, 40 MSPS ADC with higher 74 dBc SNR and 90 dBc SFDR, but consumes 450 mW and requires dual 5 V/3.3 V supplies. | Targeted at high-fidelity test equipment and radar signal analysis where resolution outweighs power and supply complexity. | Choose AD9240ASTZ-40 only if 14-bit ENOB and >73 dBc SNR are mandatory, and system can accommodate higher power and dual-rail design. |
Compared with AD9235BCPZ-40, the AD9235BRUZRL7-40 offers identical electrical performance in a cost-optimized TSSOP package ideal for volume production; versus AD9240ASTZ-40, it trades 2-bit resolution for 2.7× lower power and single-supply simplicity in portable and battery-operated systems.
Availability
AD9235BRUZRL7-40 is available at Aetrix Electronics and suitable for ultrasound imaging front-ends, CDMA-One baseband receivers, and battery-powered scopemeters requiring stable component supply, long-term lifecycle support, and guaranteed industrial temperature grade performance.
Supply support for AD9235BRUZRL7-40 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 design centers worldwide and ISO 9001-certified manufacturing.
The AD9235 family was designed specifically for cost-sensitive, power-constrained IF sampling and medical imaging applications requiring 12-bit accuracy at 20–65 MSPS, with emphasis on single-supply operation and integrated reference/SHA functionality.
FAQ
What is the maximum analog input frequency supported by the AD9235BRUZRL7-40?
The AD9235BRUZRL7-40 has a 500 MHz analog input bandwidth and maintains ≥69.9 dBc SNR up to 20 MHz input frequency at 40 MSPS sampling rate. Its full-power bandwidth supports signals beyond Nyquist, enabling undersampling applications such as IF digitization at 45–55 MHz with appropriate anti-alias filtering.
Does the AD9235BRUZRL7-40 require an external voltage reference?
No, the AD9235BRUZRL7-40 integrates a precision voltage reference with selectable 1.0 V or 0.5 V output via the SENSE pin. When SENSE = AGND, VREF = 1.0 V (2 Vp-p input span); when SENSE = AVDD, VREF = 0.5 V (1 Vp-p span). External reference is optional but not required for standard operation.
What is the purpose of the MODE pin on the AD9235BRUZRL7-40?
The MODE pin on the AD9235BRUZRL7-40 configures both data output format (offset binary or twos complement) and clock duty cycle stabilizer (DCS) enable/disable. Logic high enables DCS and selects offset binary; logic low disables DCS and selects twos complement - allowing flexible interface alignment with host processors or FPGAs.
How does the AD9235BRUZRL7-40 handle out-of-range conditions?
The AD9235BRUZRL7-40 asserts the OTR (Out-of-Range) pin high when input exceeds the selected full-scale range. Combined with the MSB (D11), OTR distinguishes between high overflow (OTR = 1, D11 = 1) and low overflow (OTR = 1, D11 = 0), enabling precise saturation detection without external comparators in ultrasound or communications signal chains.
Is the AD9235BRUZRL7-40 pin-compatible with other members of the AD9235 family?
Yes - all AD9235 variants (e.g., AD9235BRUZ-20, AD9235BRUZ-65) share identical 28-lead TSSOP pinouts and register maps. The AD9235BRUZRL7-40 differs only in factory-trimmed performance at 40 MSPS; no PCB redesign is needed when upgrading or downgrading within the same package variant.
AD9235BRUZRL7-40 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):
- 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:
- 28-TSSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD9235BRUZRL7-40 FAQ
1.How can I place an order for AD9235BRUZRL7-40 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD9235BRUZRL7-40 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 AD9235BRUZRL7-40 reliable?
The price and inventory of AD9235BRUZRL7-40 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD9235BRUZRL7-40 is usually 5 days.
3.What payment methods are accepted for AD9235BRUZRL7-40?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD9235BRUZRL7-40 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD9235BRUZRL7-40?
AD9235BRUZRL7-40 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD9235BRUZRL7-40 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 AD9235BRUZRL7-40?
For technical support, including AD9235BRUZRL7-40 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD9235BRUZRL7-40 requirements.
6.How does Aetrix verify that AD9235BRUZRL7-40 is sourced from the original manufacturer or authorized distributors?
All AD9235BRUZRL7-40 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 AD9235BRUZRL7-40 meets industry standards.
7.What is the process for return or replacement of AD9235BRUZRL7-40?
All AD9235BRUZRL7-40 units undergo pre-shipment inspection (PSI). If there is an issue with AD9235BRUZRL7-40, 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 AD9235BRUZRL7-40 part is unused and in its original packaging.
Return procedure for AD9235BRUZRL7-40:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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