My Inquiry
My Account
Analog Devices Inc. AD9238BSTZRL-65
- Part No.:
- AD9238BSTZRL-65
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 64-LQFP
- Datasheet:
-
AD9238BSTZRL-65.pdf
- Description:
- IC ADC 12BIT PIPELINED 64LQFP
- Quantity:
- Payment:
- Shipping:
Inventory:2,088
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
AD9238BSTZRL-65 from Analog Devices is a dual-channel, 12-bit, 65 MSPS analog-to-digital converter (ADC) with differential input architecture, integrated voltage reference, and clock duty cycle stabilizer. It delivers 70 dB SNR and 80.5 dBc SFDR at 32.5 MHz input, operates from a single 3 V supply (2.7–3.6 V), and consumes 600 mW total power. It is used in ultrasound equipment and IF-sampling receivers requiring high channel isolation and wide analog input bandwidth (500 MHz, 3 dB).
For engineers reviewing the AD9238BSTZRL-65 datasheet, AD9238BSTZRL-65 pinout, AD9238BSTZRL-65 application, or AD9238BSTZRL-65 equivalent, this page provides verified technical context, exact pin functions, real-world application mappings, and validated alternative parts for dual-channel 12-bit ADC selection in high-isolation, medium-speed sampling systems.
Technical Context
The AD9238BSTZRL-65 implements a multistage differential pipelined ADC architecture with output error correction logic to guarantee no missing codes across −40°C to +85°C. Each channel features independent sample-and-hold amplifiers and configurable reference modes (shared or independent).
It supports dual single-ended clock inputs (CLK_A/CLK_B), includes a duty cycle stabilizer (DCS) to maintain performance over 30%–70% clock duty cycles, and offers flexible digital output control via OEB_A/OEB_B, PDWN_A/PDWN_B, and MUX_SELECT for data multiplexing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - guarantees monotonicity and no missing codes over full industrial temperature range. |
| Sampling Rate | 65 MSPS - enables Nyquist-limited digitization up to 32.5 MHz with <70 dB SNR and <80.5 dBc SFDR. |
| SNR / SFDR | 70 dB / 80.5 dBc at fIN = 32.5 MHz - defines usable dynamic range for IF sampling in WB-CDMA and WiMAX baseband processing. |
| Analog Input Bandwidth | 500 MHz (3 dB) - supports undersampling of RF/IF signals up to ~200 MHz without external amplification. |
| Channel Isolation | −85 dB - ensures minimal crosstalk between Channel A and B during simultaneous dual-tone acquisition. |
| Power Consumption | 600 mW total (300 mW/channel) at 65 MSPS - optimized for battery-powered instruments and hand-held scopemeters. |
| Digital Supply | DRVDD = 2.25–3.6 V - decoupled via 0.1 µF || 10 µF capacitors to DRGND for stable CMOS-level output switching. |
| Reference Mode | Configurable shared or independent REFT/REFB per channel - enables flexible gain matching and offset calibration. |
Pinout & Package
The AD9238BSTZRL-65 is packaged in a Pb-free, 64-lead LQFP (10 mm × 10 mm, 0.5 mm pitch) with exposed thermal pad connected to AGND. Pin 1 identifier located at top-left corner; exposed pad must be soldered to AGND plane for thermal and noise performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN+_A / VIN−_A | Differential analog input, Channel A | Accepts 1 Vp-p to 2 Vp-p input range; 7 pF input capacitance requires careful layout for >50 MHz signals. |
| CLK_A / CLK_B | Asynchronous conversion clock inputs | Enable independent timing control per channel; DCS circuit corrects duty cycle distortion to preserve aperture jitter <0.5 ps rms. |
| D0_A–D11_A / D0_B–D11_B | 12-bit parallel digital outputs (LSB to MSB) | Output in offset binary or twos complement format; OEB_A/OEB_B control high-Z state for bus sharing. |
| PDWN_A / PDWN_B | Channel power-down control | Logic 1 disables respective ADC channel (outputs static, not high-Z); reduces power by ~298 mW per channel at 65 MSPS. |
| OTR_A / OTR_B | Out-of-range indicator | Flags overflow/underflow conditions; used with MSB to distinguish high vs. low saturation in real-time signal monitoring. |
| SHARED_REF | Reference mode select | High = shared reference between channels (improves gain matching); Low = independent references (enables differential offset tuning). |
| MUX_SELECT | Data multiplexing enable | When high, disables multiplexed output mode; allows simultaneous readout of both 12-bit ports for time-aligned dual-channel capture. |
Key Features
| Feature | Design Value |
|---|---|
| Dual 12-bit pipelined ADC core | Guarantees no missing codes and ≤±0.35 LSB DNL over −40°C to +85°C, enabling precision measurement in medical and test equipment. |
| Integrated 1.0 V reference with SENSE pin | Eliminates need for external reference IC; SENSE pin selects 1.0 V or 0.5 V internal reference mode for input span scaling. |
| Clock duty cycle stabilizer (DCS) | Compensates for clock asymmetry (30–70% duty cycle), maintaining SNR/SFDR within 0.5 dB across full operating range. |
| Flexible data output formatting | DFS pin selects offset binary (default) or twos complement output, simplifying FPGA interface logic for signed arithmetic applications. |
| Low-power standby mode | 2.0 mW total standby power with CLK_A/CLK_B inactive - supports rapid wake-up (<2.5 ms) for burst-mode acquisition in portable devices. |
| High channel isolation (>85 dB) | Enables true simultaneous sampling of two independent RF paths (e.g., I/Q demodulation or beamforming front-ends) without inter-channel interference. |
Applications
| Ultrasound Beamforming | IF Sampling Receiver |
|---|---|
|
Use Scenario: Simultaneous digitization of multiple transducer channel outputs in phased-array ultrasound systems. IC Role / Device Role / Timing Role: Dual-channel ADC captures time-aligned echo return signals from adjacent transducer elements for real-time beam steering and focusing. Use Value: 85 dB channel isolation prevents cross-talk between adjacent receive paths; 500 MHz analog bandwidth supports harmonics up to 3rd order for tissue harmonic imaging. |
Use Scenario: Direct digitization of 70–100 MHz IF signals in cellular base station receivers (WB-CDMA, CDMA2000). IC Role / Device Role / Timing Role: ADC performs undersampling of bandpass-limited IF signals, feeding FPGA-based digital downconverters and channelizers. Use Value: 70 dB SNR at 100 MHz input enables >12-bit ENOB for high-fidelity demodulation; 65 MSPS rate satisfies Nyquist for 32.5 MHz signal bandwidth. |
| Battery-Powered Scopemeter | Low-Cost Digital Oscilloscope |
|
Use Scenario: Portable handheld instrument capturing transient waveforms in field service and education environments. IC Role / Device Role / Timing Role: Dual ADC digitizes probe inputs (e.g., CH1/CH2) with synchronized sampling clocks for accurate phase difference measurement. Use Value: 600 mW total power enables >4 hours runtime on Li-ion battery; 12-bit resolution supports 0.025% amplitude accuracy for calibration-grade measurements. |
Use Scenario: Entry-level benchtop oscilloscope targeting educational labs and electronics hobbyists. IC Role / Device Role / Timing Role: ADC serves as primary acquisition engine, interfacing directly to FPGA for waveform memory buffering and display rendering. Use Value: Pin-compatible upgrade path from AD9248-65 allows reuse of PCB layout; LQFP package supports cost-effective reflow assembly and manual repair. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel 12-bit ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9248BSTZRL-65 | 14-bit resolution, same 65 MSPS rate, identical pinout and package (64-lead LQFP), but higher power (750 mW) and lower SNR floor (69 dB typical). | Better DC accuracy and spurious-free dynamic range for high-precision instrumentation; less suitable for ultra-low-power portable designs. | Select AD9248BSTZRL-65 when 14-bit ENOB is required for spectral analysis or calibration standards; AD9238BSTZRL-65 preferred for power-constrained IF sampling. |
| ADS62P49IRGCT | 14-bit, dual 250 MSPS, QFN-64 package, JESD204B serial output, no internal reference, requires external clock conditioning. | Targets wideband communications (LTE, radar) where >100 MHz instantaneous bandwidth is needed; incompatible with parallel LVCMOS bus interfaces. | Choose ADS62P49IRGCT for high-speed serial backhaul or multi-GSPS systems; AD9238BSTZRL-65 remains optimal for cost-sensitive, parallel-output, medium-bandwidth applications. |
Compared with AD9248BSTZRL-65 and ADS62P49IRGCT, the AD9238BSTZRL-65 uniquely balances 12-bit precision, 65 MSPS throughput, integrated reference, and sub-1 W power in a standard LQFP-making it the most practical choice for ultrasound front-ends and portable test equipment where pin compatibility and analog integration reduce BOM count and layout complexity.
Availability
AD9238BSTZRL-65 is available at Aetrix Electronics and suitable for ultrasound beamforming, IF sampling receivers, and battery-powered scopemeters requiring stable component supply, long-term lifecycle support, and consistent parametric performance across production batches.
Supply support for AD9238BSTZRL-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, Inc. is a global leader in high-performance analog, mixed-signal, and DSP technologies, headquartered in Norwood, MA, with design centers worldwide and ISO 9001-certified manufacturing.
The AD9238 product line targets medium-speed, dual-channel data acquisition in medical imaging, communications infrastructure, and portable instrumentation-designed to deliver high channel isolation, integrated reference, and low-power operation without sacrificing AC performance.
FAQ
What is the maximum analog input frequency supported by the AD9238BSTZRL-65?
The AD9238BSTZRL-65 has a 500 MHz (3 dB) analog input bandwidth, enabling direct undersampling of RF and IF signals up to approximately 200 MHz. At 100 MHz input frequency, it maintains 67.6 dB SNR and 75.0 dBc SFDR per the Rev. D datasheet, making it suitable for wideband receiver front-ends where harmonic content must be preserved.
Does the AD9238BSTZRL-65 require an external voltage reference?
No, the AD9238BSTZRL-65 integrates a precision 1.0 V (or 0.5 V) voltage reference with ±35 mV output voltage error over temperature. The SENSE pin configures reference mode, and REFT_A/REFB_A or REFT_B/REFB_B pins provide differential reference connections-no external reference IC is needed unless higher accuracy or custom reference voltage is required.
How does the clock duty cycle stabilizer (DCS) function in the AD9238BSTZRL-65?
The DCS circuit in the AD9238BSTZRL-65 actively corrects clock duty cycle distortion across 30%–70% input range, ensuring aperture jitter remains ≤0.5 ps rms. When enabled (DCS pin tied high), it preserves SNR and SFDR within 0.5 dB even with highly asymmetric clocks-critical for systems using crystal oscillators or PLLs with poor duty cycle control.
Can both channels of the AD9238BSTZRL-65 operate independently?
Yes, the AD9238BSTZRL-65 supports fully independent operation: CLK_A and CLK_B accept asynchronous clocks; PDWN_A and PDWN_B allow per-channel power-down; OEB_A and OEB_B control individual output bus states; and SHARED_REF selects either shared or independent reference configurations-enabling flexible timing, power, and calibration schemes.
What is the purpose of the MUX_SELECT pin on the AD9238BSTZRL-65?
The MUX_SELECT pin controls data multiplexing mode: when low, it enables multiplexed output where Channel A and B data alternate on a single 12-bit bus (reducing FPGA pin count); when high, it disables multiplexing, allowing simultaneous access to both full 12-bit ports-essential for time-critical dual-channel acquisition like I/Q sampling or differential signal capture.
AD9238BSTZRL-65 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 64-LQFP
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 65M
- 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:
- External, Internal
- Voltage - Supply, Analog:
- 2.7V ~ 3.6V
- Voltage - Supply, Digital:
- 2.25V ~ 3.6V
- Features:
- Simultaneous Sampling
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 64-LQFP (7x7)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD9238BSTZRL-65 FAQ
1.How can I place an order for AD9238BSTZRL-65 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD9238BSTZRL-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 AD9238BSTZRL-65 reliable?
The price and inventory of AD9238BSTZRL-65 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD9238BSTZRL-65 is usually 5 days.
3.What payment methods are accepted for AD9238BSTZRL-65?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD9238BSTZRL-65 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD9238BSTZRL-65?
AD9238BSTZRL-65 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD9238BSTZRL-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 AD9238BSTZRL-65?
For technical support, including AD9238BSTZRL-65 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD9238BSTZRL-65 requirements.
6.How does Aetrix verify that AD9238BSTZRL-65 is sourced from the original manufacturer or authorized distributors?
All AD9238BSTZRL-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 AD9238BSTZRL-65 meets industry standards.
7.What is the process for return or replacement of AD9238BSTZRL-65?
All AD9238BSTZRL-65 units undergo pre-shipment inspection (PSI). If there is an issue with AD9238BSTZRL-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 AD9238BSTZRL-65 part is unused and in its original packaging.
Return procedure for AD9238BSTZRL-65:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
AD9238BSTZRL-65 Tags
-
ADC081C021CIMKX/NOPB
Texas Instruments
-
MCP3021A5T-E/OT
Microchip Technology
-
TLA2024IRUGR
Texas Instruments
-
MCP3221A5T-E/OT
Microchip Technology
-
MCP3221A5T-I/OT
Microchip Technology
-
MCP3221A4T-E/OT
Microchip Technology
-
MCP3221A6T-E/OT
Microchip Technology
-
MCP3221A0T-E/OT
Microchip Technology
-
MCP3221A1T-E/OT
Microchip Technology
-
ADC121S021CIMFX/NOPB
Texas Instruments
-
MCP3001-I/MS
Microchip Technology
-
MCP3001-I/SN
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
