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Analog Devices Inc. AD9634BCPZ-170
- Part No.:
- AD9634BCPZ-170
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 32-WFQFN Exposed Pad, CSP
- Datasheet:
-
AD9634BCPZ-170.pdf
- Description:
- IC ADC 12BIT PIPELINED 32LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:2,454
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Product details
Overview
AD9634BCPZ-170 from Analog Devices is a 12-bit, 170 MSPS analog-to-digital converter optimized for wideband communications receivers. It features LVDS DDR outputs, integrated 1.8 V voltage reference, and a duty cycle stabilizer for robust clock tolerance. Its 1.75 Vp-p input range, −40°C to +85°C industrial temperature rating, and 32-lead LFCSP package support high-density RF front-end designs in TD-SCDMA and LTE base stations.
For engineers reviewing the AD9634BCPZ-170 datasheet, AD9634BCPZ-170 pinout, AD9634BCPZ-170 application, or AD9634BCPZ-170 equivalent, key selection considerations include SNR at 185 MHz (69.5 dBFS), SFDR (86 dBc), input noise (−150.6 dBFS/Hz), power consumption (333 mW), and compatibility with 1.8 V supply rails and differential clock inputs up to 625 MHz.
Technical Context
The AD9634BCPZ-170 implements a multistage differential pipelined ADC architecture with integrated error correction logic and supports flexible analog input ranges from 1.4 Vp-p to 2.0 Vp-p. Its internal duty cycle stabilizer compensates for clock duty cycle variation, enabling stable performance across varying input clock conditions.
It uses a 3-wire SPI-compatible serial interface for register configuration and includes fast overrange detection with dedicated OR± outputs. The device supports integer 1-to-8 clock division and delivers parallel DDR LVDS data on 12-bit differential pairs synchronized to DCO±.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - Enables precise digitization of RF signals with 4096 discrete amplitude levels. |
| Max Sample Rate | 170 MSPS - Supports Nyquist bandwidth up to 85 MHz for direct sampling of IF signals in multimode receivers. |
| SNR @ 185 MHz | 69.5 dBFS - Delivers high dynamic range for weak signal capture in dense spectral environments. |
| SFDR @ 185 MHz | 86 dBc - Minimizes spurious content critical for adjacent-channel rejection in W-CDMA and LTE. |
| Total Power | 333 mW - Optimized for thermal management in compact, fanless wireless infrastructure modules. |
| Analog Input Range | 1.75 Vp-p nominal - Matches standard transformer-coupled or balun-based RF front-end interfaces. |
| Digital Interface | DDR LVDS (ANSI-644) - Provides noise-immune, high-speed data transmission at 340 Mbps per lane. |
| Supply Voltage | 1.8 V AVDD/DRVDD - Enables seamless integration with modern low-voltage FPGA and ASIC I/O domains. |
Pinout & Package
The AD9634BCPZ-170 is housed in a 32-lead, 5 mm × 5 mm LFCSP package with an exposed thermal paddle that must be soldered to the PCB ground plane for proper operation and thermal reliability.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CLK+, CLK− | Differential clock input | Accepts CMOS/LVDS/LVPECL clocks up to 625 MHz; internal bias enables single-ended or differential drive. |
| VIN+, VIN− | Differential analog input | Supports 1.4–2.0 Vp-p full-scale range; 20 kΩ input resistance and 2.5 pF capacitance simplify anti-alias filter design. |
| VCM | Common-mode bias output | Provides 0.9 V reference for external driver stage; requires 0.1 µF decoupling to AGND. |
| D0±/D1± to D10±/D11± | DDR LVDS data outputs | 12-bit parallel DDR LVDS bus delivering sampled data at double-data-rate; LSB-to-MSB ordering matches standard FPGA capture logic. |
| DCO± | Data clock output | LVDS clock synchronized to data edges; used for timing capture in FPGA receivers with minimal skew (≤0.7 ns). |
| OR± | Overrange indicator | Differential flag signaling instantaneous input overload; enables real-time AGC or clipping mitigation in software-defined radios. |
| SCLK, SDIO, CSB | SPI control interface | 3-wire serial port (1.8 V logic) for configuring gain, test modes, power-down, and reading status registers. |
| AVDD, DRVDD | Power supplies | Separate 1.8 V analog and digital driver supplies reduce noise coupling; each requires local 0.1 µF + 10 µF decoupling. |
| AGND / Exposed Paddle | Analog ground reference | Thermal paddle is electrically connected to AGND; mandatory soldering ensures signal integrity and thermal dissipation (θJA = 37.1°C/W). |
Key Features
| Feature | Design Value |
|---|---|
| Integrated voltage reference | Eliminates external reference IC and associated layout complexity while maintaining ±0.4 LSB INL over temperature. |
| Duty cycle stabilizer (DCS) | Compensates for clock asymmetry without requiring 50% duty cycle; preserves SNR/SFDR even with ±15% duty cycle deviation. |
| Flexible power-down modes | Reduces power to 5 mW in full power-down or 50 mW in standby-enabling rapid wake-up (<100 µs) for burst-mode operation. |
| Fast overrange detection | OR± outputs respond within 3 pipeline cycles (30 ns at 170 MSPS), supporting real-time signal monitoring and adaptive front-end control. |
| Pipelined architecture with error correction | Ensures no missing codes and ±0.4 LSB DNL across full industrial temperature range, critical for measurement accuracy in ultrasound and test equipment. |
Applications
| TD-SCDMA Base Station Receiver | LTE Digital Pre-Distortion (DPD) |
|---|---|
Use Scenario: Digitizing 2 GHz band IF signals at 76.8 MSPS after quadrature downconversion in macrocell BTS. IC Role / Device Role / Timing Role: Primary ADC capturing I/Q channels with simultaneous 12-bit resolution and <86 dBc SFDR to preserve EVM under high ACLR conditions. Use Value: 69.5 dBFS SNR at 185 MHz enables accurate estimation of PA nonlinearities for real-time DPD coefficient updates. |
Use Scenario: Capturing feedback path signals from PA output in closed-loop DPD systems operating at 20–30 MHz IF bandwidth. IC Role / Device Role / Timing Role: High-fidelity acquisition block feeding FPGA-based adaptive filter engines with deterministic 10-cycle latency. Use Value: 1.8 V LVDS interface reduces EMI and simplifies routing to Xilinx Kintex-7 FPGA banks, avoiding level-shifting components. |
| Ultrasound Beamformer Front-End | Smart Antenna DOA Processing |
Use Scenario: Sampling 5–15 MHz echo return signals from 128-element transducer arrays with time-aligned channel capture. IC Role / Device Role / Timing Role: Channel-synchronized ADC providing 170 MSPS sampling across multiple receive paths using shared clock and DCO timing. Use Value: Low 0.1 ps RMS aperture jitter and −150.6 dBFS/Hz input noise maximize SNR for detecting microsecond-scale tissue reflections. |
Use Scenario: Simultaneous digitization of 8–16 antenna element signals in MIMO base stations for real-time direction-of-arrival estimation. IC Role / Device Role / Timing Role: Multi-channel ADC subsystem where pin-compatible variants (e.g., AD9642) allow scalable bit-depth migration. Use Value: 32-lead LFCSP footprint and identical pinout with AD9642 enable hardware reuse across 12-bit and 14-bit system tiers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar analog-to-digital conversion applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9642BCPZ-210 | 14-bit resolution, 210 MSPS max sample rate, higher SNR (70.1 dBFS @ 185 MHz), 360 mW power at 210 MSPS. | Targeted at higher dynamic range requirements in radar and advanced test equipment where 2-bit ENOB improvement justifies added power and cost. | Select AD9642BCPZ-210 when >70 dBFS SNR and ≥14-bit linearity are required; not drop-in due to different SPI register map and thermal pad layout. |
| AD6672BCPZ-250 | 12-bit, 250 MSPS, lower power (385 mW), wider full-power bandwidth (1000 MHz), but reduced SFDR (80 dBc @ 185 MHz). | Better suited for very high IF sampling (e.g., 200+ MHz) in broadband spectrum analyzers where SFDR trade-off is acceptable. | Choose AD6672BCPZ-250 for >200 MHz input frequencies; verify OR± timing and SPI command compatibility before substitution. |
Compared with AD9634BCPZ-170, the AD9642BCPZ-210 offers higher resolution at increased power and cost, while the AD6672BCPZ-250 prioritizes speed and bandwidth over spurious performance-making each suitable for distinct signal chain priorities in communications infrastructure.
Availability
AD9634BCPZ-170 is available at Aetrix Electronics and suitable for TD-SCDMA base station receivers, LTE digital pre-distortion systems, and ultrasound beamformer front-ends requiring stable component supply, long-term obsolescence planning, and traceable sourcing.
Supply support for AD9634BCPZ-170 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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving precision instrumentation, communications, and industrial markets since 1965.
The AD9634 belongs to Analog Devices' high-speed ADC product line, engineered specifically for communications infrastructure applications demanding low power, small size, wide input bandwidth, and robust LVDS interfacing.
FAQ
What is the maximum input frequency supported by the AD9634BCPZ-170?
The AD9634BCPZ-170 has a full-power bandwidth of 1000 MHz, meaning it maintains specified AC performance (e.g., SNR, SFDR) for analog inputs up to 1 GHz. At 185 MHz input frequency and 170 MSPS sampling, it achieves 69.5 dBFS SNR and 86 dBc SFDR-key metrics validated in the official datasheet Figure 5 and Table 2.
Does the AD9634BCPZ-170 require an external voltage reference?
No, the AD9634BCPZ-170 integrates a precision internal voltage reference, eliminating the need for external reference components. This simplifies board layout and reduces BOM count while maintaining ±0.4 LSB INL over the −40°C to +85°C industrial temperature range, as confirmed in Table 1 of the AD9634 datasheet Rev. B.
What is the purpose of the VCM pin on the AD9634BCPZ-170?
The VCM pin on the AD9634BCPZ-170 provides a 0.9 V common-mode bias voltage for differential analog input drivers. It must be decoupled to AGND with a 0.1 µF capacitor to ensure stable input termination and optimal SNR performance, as specified in the Pin Function Descriptions (Table 8) and Figure 3 of the datasheet.
How does the duty cycle stabilizer (DCS) improve system robustness in the AD9634BCPZ-170?
The DCS in the AD9634BCPZ-170 actively corrects for ADC clock duty cycle variations, allowing the device to maintain full AC performance (e.g., 69.5 dBFS SNR) even with non-50% duty cycle clocks. This eliminates the need for external clock conditioners and improves timing margin in systems using PLLs or dividers with inherent duty cycle distortion.
Can the AD9634BCPZ-170 be used in pin-compatible designs with other members of the AD96xx family?
Yes-the AD9634BCPZ-170 shares identical pinout and package (32-lead LFCSP) with the AD9642 and AD6672, enabling hardware reuse across speed and resolution grades. However, register maps and SPI command sets differ, so firmware must be adapted; this compatibility is explicitly stated in the Product Highlights section of the AD9634 datasheet.
AD9634BCPZ-170 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 32-WFQFN Exposed Pad, CSP
- Packaging:
- Tray
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 170M
- Number of Inputs:
- 1
- Input Type:
- Differential
- Data Interface:
- LVDS - Parallel
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- Pipelined
- Reference Type:
- Internal
- Voltage - Supply, Analog:
- 1.7V ~ 1.9V
- Voltage - Supply, Digital:
- 1.7V ~ 1.9V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 32-LFCSP (5x5)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD9634BCPZ-170 FAQ
1.How can I place an order for AD9634BCPZ-170 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD9634BCPZ-170 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 AD9634BCPZ-170 reliable?
The price and inventory of AD9634BCPZ-170 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD9634BCPZ-170 is usually 5 days.
3.What payment methods are accepted for AD9634BCPZ-170?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD9634BCPZ-170 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD9634BCPZ-170?
AD9634BCPZ-170 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD9634BCPZ-170 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 AD9634BCPZ-170?
For technical support, including AD9634BCPZ-170 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD9634BCPZ-170 requirements.
6.How does Aetrix verify that AD9634BCPZ-170 is sourced from the original manufacturer or authorized distributors?
All AD9634BCPZ-170 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 AD9634BCPZ-170 meets industry standards.
7.What is the process for return or replacement of AD9634BCPZ-170?
All AD9634BCPZ-170 units undergo pre-shipment inspection (PSI). If there is an issue with AD9634BCPZ-170, 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 AD9634BCPZ-170 part is unused and in its original packaging.
Return procedure for AD9634BCPZ-170:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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