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Analog Devices Inc. AD9648BCPZ-125
- Part No.:
- AD9648BCPZ-125
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 64-VFQFN Exposed Pad, CSP
- Datasheet:
-
AD9648BCPZ-125.pdf
- Description:
- IC ADC 14BIT PIPELINED 64LFCSP
- Quantity:
- Payment:
- Shipping:
Inventory:4,652
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Product details
Overview
AD9648BCPZ-125 from Analog Devices is a dual-channel, 14-bit, 125 MSPS analog-to-digital converter operating from a single 1.8 V analog supply, featuring differential analog inputs with 650 MHz bandwidth, SNR of 74.5 dBFS at 70 MHz, and on-chip voltage reference-used in I/Q demodulation and broadband communications receivers.
For engineers reviewing the AD9648BCPZ-125 datasheet, AD9648BCPZ-125 pinout, AD9648BCPZ-125 application, or AD9648BCPZ-125 equivalent, this page delivers verified specifications, CMOS/LVDS output configuration details, dual-channel timing alignment options, and migration-path compatibility with AD9258/AD9628 family ADCs.
Technical Context
The AD9648BCPZ-125 employs a multistage differential pipeline architecture with output error correction logic to guarantee 14-bit accuracy and no missing codes across −40°C to +85°C. It supports IF sampling up to 200 MHz and integrates a patented sample-and-hold circuit optimized for low power and wide input bandwidth.
Its serial port interface enables full configuration of data formatting (offset binary/Gray/twos complement), integer 1-to-8 clock division, programmable DCO/data alignment, and built-in deterministic/pseudorandom test pattern generation-without requiring external logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit - guarantees monotonicity and no missing codes over full temperature range |
| Sampling Rate | 125 MSPS - maximum conversion rate with DCS enabled; supports real-time digitization of IF signals up to 200 MHz |
| SNR @ 70 MHz | 74.5 dBFS - defines usable dynamic range for high-fidelity signal capture in W-CDMA/LTE baseband processing |
| SFDR @ 70 MHz | 91 dBc - determines spurious-free resolution for multi-carrier receiver applications |
| Analog Input Bandwidth | 650 MHz - enables direct sampling of L-band and lower S-band RF/IF signals without external amplification |
| Power Consumption | 106 mW/channel @ 125 MSPS - enables dual-channel digitization in thermally constrained portable medical or radar systems |
| Digital Output Interface | 1.8 V CMOS or LVDS - selectable per channel; LVDS reduces EMI and supports longer trace routing in dense PCB layouts |
Pinout & Package
The AD9648BCPZ-125 is housed in a 64-lead RoHS-compliant LFCSP (9 mm × 9 mm) with exposed thermal pad soldered to AGND for optimal thermal performance and analog integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN+A / VIN−A | Differential analog input (Channel A) | Accepts 2 V p-p differential signal; common-mode bias set by internal VCM (0.9 V) or external source |
| VIN+B / VIN−B | Differential analog input (Channel B) | Independent second channel with identical AC performance and DC matching specs to Channel A |
| CLK+ / CLK− | Differential clock input | Accepts CMOS/LVDS/LVPECL; optional duty cycle stabilizer maintains timing integrity under clock skew |
| D0A–D13A / D0B–D13B | Parallel digital outputs | 14-bit CMOS or LVDS data per channel; LSB-to-MSB ordering supports standard FPGA interface protocols |
| DCOA / DCOB | Data clock output | Source-synchronous clock per channel; programmable phase alignment ensures reliable latch timing at FPGA inputs |
| AVDD / DRVDD | Power supplies | Separate 1.8 V analog and digital driver rails enable independent noise isolation and logic-family flexibility |
| OEB / PDWN | Output enable / power-down control | Hardware-controlled low-power states: 2 mW power-down mode and 108 mW standby mode |
Key Features
| Feature | Design Value |
|---|---|
| On-chip voltage reference | 1.0 V ±2% output with 2 mV load regulation error-eliminates need for external precision reference in space-constrained designs |
| Programmable clock divider (1–8) | Reduces system clocking complexity by allowing use of lower-frequency, lower-jitter master clocks while maintaining 125 MSPS sampling |
| Data output multiplex option | Enables interleaved or channel-multiplexed output modes-reduces FPGA pin count and simplifies PCB routing for dual-channel data streams |
| Built-in test pattern generation | Supports deterministic, pseudorandom, and user-defined patterns via SPI-enables in-system verification without external signal sources |
| Integer-N clock divider + DCS | Compensates for >40% clock duty cycle variation while preserving aperture jitter <0.137 ps rms-critical for high-SFDR IF sampling |
Applications
| Communications Receiver | I/Q Demodulation System |
|---|---|
Use Scenario: Digitizing dual IF outputs from quadrature downconverters in LTE/W-CDMA base stations. IC Role / Device Role / Timing Role: Dual-channel simultaneous sampling ADC with matched gain/offset and sub-1 ps inter-channel skew. Use Value: Enables coherent I/Q processing with <±0.58% gain error and <±0.5 LSB DNL-preserving EVM and ACLR performance. |
Use Scenario: Capturing in-phase and quadrature components in software-defined radio front ends. IC Role / Device Role / Timing Role: Synchronized dual ADC with programmable DCO alignment and 16-cycle pipeline latency. Use Value: Supports deterministic timing recovery and zero-latency channel pairing for real-time DSP algorithms. |
| Radar/LIDAR Signal Acquisition | Portable Ultrasound Imaging |
Use Scenario: Sampling pulsed RF return signals in FMCW radar modules operating at 77 GHz with IF at 100–200 MHz. IC Role / Device Role / Timing Role: High-bandwidth ADC with 650 MHz analog input and SFDR >81 dBc at 200 MHz. Use Value: Resolves closely spaced chirp harmonics and clutter signals with >11.3 ENOB at Nyquist zone 2. |
Use Scenario: Replacing discrete ADCs in handheld ultrasound probes requiring low power and small footprint. IC Role / Device Role / Timing Role: Dual 14-bit digitizer with 106 mW/channel power and integrated reference-reducing BOM count by 4+ components. Use Value: Meets battery life targets with 2 mW power-down mode and eliminates external reference calibration overhead. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel, 14-bit ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9258BCPZ-125 | 14-bit, 125 MSPS, same LFCSP-64 package and pinout; higher power (155 mW/channel), wider input bandwidth (1 GHz), no DCS | Preferred for ultra-wideband IF sampling where aperture jitter tolerance is relaxed | Select AD9258BCPZ-125 when >1 GHz analog bandwidth is required and DCS is unnecessary |
| AD9628BCPZ-125 | 12-bit, 125 MSPS, identical pinout and package; lower power (72 mW/channel), reduced SNR (70.5 dBFS @ 70 MHz) | Suitable for cost-sensitive, lower-dynamic-range applications like basic spectrum monitoring | Choose AD9628BCPZ-125 when 12-bit resolution suffices and power budget is <75 mW/channel |
Compared with AD9628BCPZ-125 and AD9258BCPZ-125, the AD9648BCPZ-125 uniquely balances 14-bit fidelity, 650 MHz bandwidth, and integrated DCS-making it optimal for mid-tier communications and portable imaging where SNR, power, and clock robustness are jointly critical.
Availability
AD9648BCPZ-125 is available at Aetrix Electronics and suitable for communications infrastructure, radar signal processing, portable medical imaging, and I/Q demodulation systems requiring stable component supply and long-term production continuity.
Supply support for AD9648BCPZ-125 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 technologies, headquartered in Norwood, MA.
The AD9648 belongs to Analog Devices' high-speed ADC product line, designed specifically for demanding communications, instrumentation, and medical imaging applications requiring dual-channel synchronization, low power, and wide analog bandwidth.
FAQ
What is the maximum analog input frequency supported by the AD9648BCPZ-125?
The AD9648BCPZ-125 supports IF sampling frequencies up to 200 MHz with maintained AC performance, enabled by its 650 MHz analog input bandwidth and patented sample-and-hold circuit. At 200 MHz input, SNR remains 71.0 dBFS and SFDR is 81 dBc-verified in the AD9648 Rev. C datasheet Table 2.
Does the AD9648BCPZ-125 support both CMOS and LVDS digital outputs simultaneously?
No-the AD9648BCPZ-125 supports either 1.8 V CMOS or LVDS output mode per channel, selected via SPI register configuration. Both channels must operate in the same logic family; simultaneous CMOS+LVDS output is not supported. The DRVDD supply voltage sets the output swing level.
What is the purpose of the RBIAS pin on the AD9648BCPZ-125?
The RBIAS pin on the AD9648BCPZ-125 connects to a 10 kΩ (1%) resistor to ground to set the internal bias current for the on-chip voltage reference and sample-and-hold circuit. This external resistor ensures stable reference voltage (1.0 V ±2%) and optimal SNR/SFDR performance across temperature and process variation.
How does the duty cycle stabilizer (DCS) function in the AD9648BCPZ-125?
The DCS in the AD9648BCPZ-125 actively corrects clock duty cycle variations at the CLK+/CLK− inputs, maintaining aperture jitter below 0.137 ps rms even with 30%–70% duty cycle distortion. It operates transparently when enabled via SPI Register 0x1C Bit 0, requiring no external components.
Is the AD9648BCPZ-125 pin-compatible with other Analog Devices ADCs?
Yes-the AD9648BCPZ-125 uses a 64-lead LFCSP package pin-compatible with AD9650/AD9269/AD9268 (16-bit), AD9258 (14-bit), AD9628/AD9231 (12-bit), and AD9608/AD9204 (10-bit) families. This enables seamless resolution upgrades from 10-bit to 16-bit within the same PCB layout and firmware framework.
AD9648BCPZ-125 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:
- 14
- Sampling Rate (Per Second):
- 125M
- Number of Inputs:
- 2
- Input Type:
- Differential
- Data Interface:
- LVDS - Parallel, 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:
- 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:
- -
AD9648BCPZ-125 FAQ
1.How can I place an order for AD9648BCPZ-125 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD9648BCPZ-125 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 AD9648BCPZ-125 reliable?
The price and inventory of AD9648BCPZ-125 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD9648BCPZ-125 is usually 5 days.
3.What payment methods are accepted for AD9648BCPZ-125?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD9648BCPZ-125 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD9648BCPZ-125?
AD9648BCPZ-125 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD9648BCPZ-125 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 AD9648BCPZ-125?
For technical support, including AD9648BCPZ-125 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD9648BCPZ-125 requirements.
6.How does Aetrix verify that AD9648BCPZ-125 is sourced from the original manufacturer or authorized distributors?
All AD9648BCPZ-125 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 AD9648BCPZ-125 meets industry standards.
7.What is the process for return or replacement of AD9648BCPZ-125?
All AD9648BCPZ-125 units undergo pre-shipment inspection (PSI). If there is an issue with AD9648BCPZ-125, 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 AD9648BCPZ-125 part is unused and in its original packaging.
Return procedure for AD9648BCPZ-125:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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