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Analog Devices Inc. AD9637BCPZ-40
- Part No.:
- AD9637BCPZ-40
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 64-VFQFN Exposed Pad, CSP
- Datasheet:
-
AD9637BCPZ-40.pdf
- Description:
- IC ADC 12BIT PIPELINED 64LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:4,181
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Product details
Overview
AD9637BCPZ-40 from Analog Devices is an octal, 12-bit, 40 MSPS serial LVDS analog-to-digital converter operating from a single 1.8 V supply, featuring 71.5 dBFS SNR, 92 dBc SFDR, and 650 MHz full-power analog bandwidth. It integrates on-chip sample-and-hold, programmable clock/data alignment, and individual channel power-down for ultrasound beamforming and quadrature radio receivers.
For engineers reviewing the AD9637BCPZ-40 datasheet, AD9637BCPZ-40 pinout, AD9637BCPZ-40 application, or AD9637BCPZ-40 equivalent, key selection criteria include its 40 MSPS sampling rate with 12-bit resolution, LVDS serial output compliance (ANSI-644), 2 V p-p differential input range, and industrial temperature range (−40°C to +85°C) in a 64-lead LFCSP package.
Technical Context
The AD9637BCPZ-40 implements eight independent ADC cores sharing a common 1.8 V AVDD and DRVDD supply, each with dedicated differential analog inputs (VIN± A–H) and LVDS serial data outputs (D± A–H). Its internal data rate multiplier synchronizes DCO/FCO outputs to support DDR serialization at up to 480 MHz.
It supports dual LVDS output modes-full-swing ANSI-644 and low-power reduced-signal-configurable via SPI. Clock input accepts CMOS/LVDS/LVPECL signals up to 640 MHz, with pipeline latency fixed at 16 clock cycles and aperture jitter of 0.1 ps rms.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - delivers 4096 discrete digital codes per conversion cycle, enabling precise amplitude quantization in medical imaging systems. |
| Sampling Rate | 40 MSPS - supports Nyquist-limited signal capture up to 20 MHz, suitable for baseband ultrasound and diversity receiver IF sampling. |
| SNR / SFDR | 71.5 dBFS / 92 dBc - ensures high-fidelity digitization of weak signals amid strong interferers, critical for dynamic range in optical networking receivers. |
| Analog Bandwidth | 650 MHz - preserves signal integrity for wideband RF inputs without external anti-alias filtering in direct-conversion architectures. |
| Supply Voltage | 1.8 V (AVDD & DRVDD) - enables low-power operation at 347–502 mW total dissipation (8-channel, ANSI-644 mode), reducing thermal load in dense PCB layouts. |
| Differential Input Range | 2 V p-p - matches standard transformer-coupled or balun-driven RF front-ends without gain adjustment or level-shifting circuitry. |
| Output Interface | Serial LVDS (ANSI-644 default) - provides noise-immune, low-skew data transmission over controlled-impedance traces, easing PCB routing versus parallel interfaces. |
Pinout & Package
The AD9637BCPZ-40 is housed in a RoHS-compliant 64-lead LFCSP (9 mm × 9 mm) with exposed thermal pad soldered to AGND for optimal thermal performance and analog grounding.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AVDD (Pins 1,4,7,8,11,12,37,42,45,48,51,59,62) | Analog power supply | 1.8 V supply for all eight ADC cores; requires local 100 nF + 10 µF decoupling per group to minimize PSRR-induced noise. |
| D+ A / D− A (Pins 33/34) | Channel A LVDS data output | Differential serial output pair for ADC A; routed as matched-length, 100 Ω controlled-impedance trace to FPGA/CPLD LVDS receiver. |
| CLK+ / CLK− (Pins 9/10) | Differential sampling clock input | Accepts LVDS/LVPECL/CMOS clocks up to 640 MHz; internal termination enables direct connection to clock synthesizers without external resistors. |
| DCO+ / DCO− (Pins 23/24) | Data clock output | DDR-capable clock synchronized to serialized data edges; used by receiving logic to latch D± streams with minimal setup/hold violation risk. |
| FCO+ / FCO− (Pins 25/26) | Frame clock output | Indicates start of new 12-bit output byte; aligns with MSB transitions to enable byte-level framing in downstream processing blocks. |
| VIN+ A / VIN− A (Pins 43/44) | Channel A analog input | Differential input pair with 5.2 kΩ impedance and 3.5 pF capacitance; optimized for transformer-coupled 2 V p-p signals at 0.9 V common-mode. |
| PDWN (Pin 41) | Global power-down control | Active-low signal disabling all eight channels to <1 mW; allows rapid system-level power gating during idle intervals in portable equipment. |
| SDIO/DFS (Pin 39) | SPI data I/O / format select | Bidirectional SPI pin supporting register read/write; also selects output resolution (10-/12-bit) and data format (twos complement, offset binary). |
Key Features
| Feature | Design Value |
|---|---|
| Scalable power per channel | 60 mW/channel at 80 MSPS; reduced-signal LVDS mode cuts DRVDD current by ~30%, lowering total power to 320–475 mW (8-channel, 25°C). |
| Programmable clock/data alignment | SPI-adjustable delay registers compensate for PCB trace skew between CLK and DCO, ensuring reliable capture at 480 MHz DDR rates. |
| Built-in test pattern generation | Supports deterministic (ramp, checkerboard), pseudorandom (PRBS), and custom user-defined patterns via SPI-enabling in-system ADC validation without external signal sources. |
| Individual channel power-down | Each of eight ADCs can be disabled independently; full shutdown consumes <2 mW per channel, ideal for adaptive channel count in beam-forming arrays. |
| Flexible bit orientation | Configurable MSB-first or LSB-first serialization order and twos-complement/offset-binary coding-simplifies interface mapping to diverse FPGA IP blocks. |
Applications
| Medical Ultrasound Beamforming | Quadrature Radio Receiver |
|---|---|
|
Use Scenario: Digitizing 8-channel echo return signals from phased-array transducers in portable ultrasound machines. IC Role / Device Role / Timing Role: Octal ADC capturing simultaneous I/Q samples at 40 MSPS with synchronized DCO/FCO for time-aligned channel processing. Use Value: 71.5 dBFS SNR preserves tissue contrast resolution; 650 MHz analog bandwidth supports harmonic imaging up to 15 MHz without aliasing. |
Use Scenario: Downconverting and digitizing complex IF signals in software-defined radios with I/Q demodulation architecture. IC Role / Device Role / Timing Role: Simultaneous sampling of in-phase and quadrature analog paths using four ADC pairs (A/B, C/D, E/F, G/H) with shared clock domain. Use Value: 92 dBc SFDR suppresses image-reject spurs; LVDS serialization reduces inter-channel crosstalk to −98 dB, maintaining I/Q orthogonality. |
| Diversity Radio Receiver | Optical Networking Front-End |
|
Use Scenario: Parallel digitization of multiple antenna paths in LTE/5G base stations to improve signal reliability via selection or combining algorithms. IC Role / Device Role / Timing Role: Eight independent ADCs acquiring RF samples across spatially separated antennas, each with configurable power-down for dynamic channel allocation. Use Value: Individual channel power-down (<2 mW off-state) enables real-time adaptation to traffic load; 16-cycle pipeline latency ensures deterministic timing for MIMO processing. |
Use Scenario: Converting high-speed photodiode outputs in coherent optical modules for DSP-based equalization and FEC decoding. IC Role / Device Role / Timing Role: High-bandwidth ADC capturing burst-mode optical signals with precise timing alignment via DCO/FCO outputs to synchronize with DSP clock domains. Use Value: 0.1 ps rms aperture jitter minimizes EVM degradation in 100G+ PAM4 systems; 2 V p-p input range accommodates unattenuated transimpedance amplifier outputs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar octal ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9257BCPZ-40 | 14-bit resolution, same 40 MSPS rate, pin-compatible LFCSP-64 package, higher 74.5 dBFS SNR but 100 mW/channel power consumption. | Better dynamic range for high-fidelity test equipment; less suitable for battery-powered ultrasound due to 2.5× higher power. | Select AD9257BCPZ-40 when ENOB > 12 bits is required and power budget allows ≥800 mW total; AD9637BCPZ-40 preferred for size- and power-constrained designs. |
| ADC3664IRSBT | Texas Instruments 14-bit, 65 MSPS octal ADC in 5-mm QFN; supports JESD204B interface instead of LVDS, 73.5 dBFS SNR, 1.1 V/1.9 V dual supplies. | Requires JESD204B-capable FPGA; lacks frame/data clock outputs; better suited for high-throughput backhaul links than legacy LVDS-based systems. | Choose ADC3664IRSBT only if migrating to JESD204B infrastructure; AD9637BCPZ-40 remains optimal for existing LVDS FPGA platforms with strict thermal constraints. |
Compared with AD9257BCPZ-40 and ADC3664IRSBT, AD9637BCPZ-40 uniquely balances 12-bit precision, 40 MSPS throughput, LVDS simplicity, and ultra-low 347–502 mW power in a compact LFCSP-making it the most cost-effective octal ADC for space-constrained, thermally sensitive medical and communications hardware.
Availability
AD9637BCPZ-40 is available at Aetrix Electronics and suitable for medical imaging systems, portable ultrasound devices, and quadrature radio receivers requiring stable component supply across long production lifecycles.
Supply support for AD9637BCPZ-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.
The AD9637 product line delivers highly integrated, low-power octal ADCs targeting portable and high-channel-count signal acquisition systems where board area, thermal density, and interface simplicity are critical design constraints.
FAQ
What is the maximum analog input frequency supported by the AD9637BCPZ-40?
The AD9637BCPZ-40 features a 650 MHz full-power analog bandwidth, allowing accurate digitization of input signals up to that frequency before significant amplitude roll-off occurs. This specification is measured at −3 dB point and enables direct RF sampling in certain IF-stripped architectures without external band-limiting filters.
Does the AD9637BCPZ-40 require an external voltage reference?
No, the AD9637BCPZ-40 includes an internal 1.0 V reference with ±2 mV load regulation and 7.5 kΩ output resistance. It can operate in buffered reference mode (VREF pin driven) or use the internal reference exclusively-eliminating need for external references in most applications unless tighter drift or noise specs are required.
How does the AD9637BCPZ-40 handle clock jitter sensitivity?
The AD9637BCPZ-40 specifies 0.1 ps rms aperture jitter, directly limiting SNR at high input frequencies. System-level SNR degrades by 6 dB per doubling of clock jitter; thus, sub-0.2 ps rms clock sources are recommended for maintaining >70 dBFS performance above 50 MHz input tones.
Can the AD9637BCPZ-40 output be configured for 10-bit resolution?
Yes, the AD9637BCPZ-40 supports programmable output resolution via SPI register 0x14. Setting bit[3] enables 10-bit truncation mode, delivering MSBs only with twos-complement or offset-binary coding-reducing FPGA resource usage and LVDS lane count in bandwidth-constrained systems.
What thermal management is required for the AD9637BCPZ-40 in continuous operation?
The AD9637BCPZ-40's exposed thermal pad must be soldered to a solid analog ground plane. With 4-layer PCB and no airflow, θJA is 22.3°C/W; adding 1 m/sec airflow reduces it to 19.5°C/W. At max 502 mW dissipation, junction temperature rise stays below 11°C above ambient-well within the 150°C absolute max rating.
AD9637BCPZ-40 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 64-VFQFN Exposed Pad, CSP
- Packaging:
- Tray
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 40M
- Number of Inputs:
- 8
- Input Type:
- Differential
- Data Interface:
- LVDS - Serial
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 8
- Architecture:
- Pipelined
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 1.7V ~ 1.9V
- Voltage - Supply, Digital:
- 1.7V ~ 1.9V
- Features:
- Simultaneous Sampling
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 64-LFCSP-VQ (9x9)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD9637BCPZ-40 FAQ
1.How can I place an order for AD9637BCPZ-40 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD9637BCPZ-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 AD9637BCPZ-40 reliable?
The price and inventory of AD9637BCPZ-40 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD9637BCPZ-40 is usually 5 days.
3.What payment methods are accepted for AD9637BCPZ-40?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD9637BCPZ-40 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD9637BCPZ-40?
AD9637BCPZ-40 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD9637BCPZ-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 AD9637BCPZ-40?
For technical support, including AD9637BCPZ-40 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD9637BCPZ-40 requirements.
6.How does Aetrix verify that AD9637BCPZ-40 is sourced from the original manufacturer or authorized distributors?
All AD9637BCPZ-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 AD9637BCPZ-40 meets industry standards.
7.What is the process for return or replacement of AD9637BCPZ-40?
All AD9637BCPZ-40 units undergo pre-shipment inspection (PSI). If there is an issue with AD9637BCPZ-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 AD9637BCPZ-40 part is unused and in its original packaging.
Return procedure for AD9637BCPZ-40:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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