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Analog Devices Inc. AD9445BSVZ-125
- Part No.:
- AD9445BSVZ-125
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 100-TQFP Exposed Pad
- Datasheet:
-
AD9445BSVZ-125.pdf
- Description:
- IC ADC 14BIT PIPELINED 100TQFP
- Quantity:
- Payment:
- Shipping:
Inventory:4,000
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Product details
Overview
AD9445BSVZ-125 from Analog Devices is a 14-bit, 125 MSPS IF sampling analog-to-digital converter optimized for multicarrier cellular infrastructure receivers. It delivers 73.8 dBFS SNR at 30 MHz input (2.0 V p-p), 94 dBc SFDR at 170 MHz, and 60 fsec rms aperture jitter, with buffered differential analog inputs and LVDS/CMOS selectable outputs.
For engineers reviewing the AD9445BSVZ-125 datasheet, AD9445BSVZ-125 pinout, AD9445BSVZ-125 application, or AD9445BSVZ-125 equivalent, key selection criteria include guaranteed 125 MSPS sampling rate, 2.0–4.0 V p-p differential input range, RF ENABLE pin configuration for >225 MHz IF optimization, and 100-lead TQFP/EP package thermal performance (θJC = 2°C/W).
Technical Context
The AD9445BSVZ-125 employs a pipeline ADC architecture with on-chip track-and-hold, supporting high-frequency IF sampling up to 450 MHz analog bandwidth. Its clock duty cycle stabilizer (DCS) maintains performance across wide input clock duty cycle variation, and RF ENABLE pin configures front-end biasing for optimal SFDR above or below 225 MHz.
Dual-supply operation (3.3 V AVDD1 + 5.0 V AVDD2) powers separate analog and digital sections, while internal reference (1.0 V mode) eliminates external components in many applications. Output data format (offset binary/twos complement) and interface mode (LVDS/CMOS) are user-selectable via dedicated control pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit - guarantees monotonicity and no missing codes over full industrial temperature range. |
| Sampling Rate | 125 MSPS - guaranteed maximum conversion rate for real-time IF digitization in 3G/4G base stations. |
| SNR @ 30 MHz | 73.8 dBFS (2.0 V p-p) - defines usable dynamic range for multi-carrier signal capture with low quantization noise. |
| SFDR @ 170 MHz | 94 dBc - determines spurious-free resolution for adjacent-channel interference rejection in dense RF environments. |
| Aperture Jitter | 60 fsec rms - limits sampling uncertainty-induced noise floor degradation at high IF frequencies. |
| Analog Bandwidth | 615 MHz - supports direct sampling of IF signals up to 300 MHz without external anti-alias filtering. |
| Input Range | 2.0–4.0 V p-p differential - configurable full-scale span enables optimization for system-level signal chain gain distribution. |
Pinout & Package
The AD9445BSVZ-125 is housed in a Pb-free, 100-lead TQFP/EP package with exposed heat sink soldered to AGND. Thermal resistance is θJC = 2°C/W (junction-to-heat sink), requiring PCB ground plane connection for thermal integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN+, VIN− | Differential Analog Input | High-impedance buffered inputs accepting 2.0–4.0 V p-p differential signals; common-mode voltage fixed at 3.5 V internally. |
| CLK+, CLK− | Differential Clock Input | LVPECL-compatible inputs requiring ≥0.2 V differential swing and 1.3–1.6 V common-mode; DCS MODE enables duty cycle correction. |
| D0+ to D13+, D0− to D13− | LVDs Data Outputs | 14-bit parallel LVDS outputs (ANSI-644 compliant); output current set by LVDS_BIAS resistor (3.74 kΩ to DRGND). |
| DCO+, DCO− | Data Clock Output | Source-synchronous LVDS clock aligned to data edges; enables reliable capture in FPGA/ASIC interfaces. |
| RF ENABLE | Front-End Optimization Control | Connect to AGND for <225 MHz IF; connect to AVDD1 for >225 MHz IF to maximize SFDR performance. |
| OUTPUT MODE | Interface Selection | Low = CMOS outputs (3.3 V); high = LVDS outputs - selects physical layer without changing core functionality. |
Key Features
| Feature | Design Value |
|---|---|
| On-chip reference and track-and-hold | Eliminates need for external reference IC and driver amplifier in most IF sampling designs, reducing BOM count and layout area. |
| Clock duty cycle stabilizer (DCS) | Maintains full AC performance across 40–60% input clock duty cycle variation, relaxing clock generator design constraints. |
| RF ENABLE pin | Enables application-specific analog front-end tuning: −150 mW to +200 mW AVDD2 current adjustment based on IF frequency band. |
| Out-of-range (OR+) detection | Dedicated LVDS output pair flags input overrange events in real time, enabling fast AGC loop response or signal clipping mitigation. |
| Configurable data format | DFS pin selects offset binary (default) or twos complement output, simplifying integration with DSP/FPGA arithmetic pipelines. |
Applications
| Cellular Infrastructure Receiver | Radar Signal Digitization |
|---|---|
Use Scenario: Multicarrier, multimode 3G/4G/LTE base station transceiver digitizing 70–300 MHz IF signals with simultaneous channel occupancy. IC Role / Device Role / Timing Role: High-speed IF sampling ADC providing 14-bit resolution at 125 MSPS to support wide instantaneous bandwidth and adjacent-channel rejection. Use Value: 94 dBc SFDR at 170 MHz enables clean separation of closely spaced carriers without analog pre-filtering, reducing system complexity. | Use Scenario: Pulse-Doppler radar front end capturing intermediate frequency echoes from fast-moving targets with high dynamic range requirements. IC Role / Device Role / Timing Role: Precision digitizer converting 100–400 MHz IF signals with low aperture jitter (60 fsec rms) to preserve Doppler resolution. Use Value: 615 MHz analog bandwidth allows direct sampling of L/S-band IFs, eliminating image-reject mixers and associated phase-matching challenges. |
| Medical Ultrasound Beamforming | Communications Test Equipment |
Use Scenario: Digital beamformer in portable ultrasound systems requiring compact, low-power digitization of 5–20 MHz receive channel signals. IC Role / Device Role / Timing Role: Low-noise ADC delivering 73.8 dBFS SNR at 30 MHz input to resolve fine tissue structures amid acoustic clutter. Use Value: Internal 1.0 V reference and buffered inputs reduce external component count, enabling smaller probe-integrated PCBs. | Use Scenario: Wideband signal analyzer or vector signal generator performing real-time spectrum analysis and modulation accuracy verification. IC Role / Device Role / Timing Role: High-fidelity digitizer capturing 200+ MHz instantaneous bandwidth for EVM and ACLR measurements per 3GPP standards. Use Value: Two-tone SFDR of 102 dBFS at 30/31 MHz ensures accurate intermodulation distortion measurement down to −102 dBc. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9446BCPZ-125 | 16-bit resolution, 125 MSPS, identical 100-lead TQFP/EP package and pinout; higher power (2.8 W vs. 2.4 W). | Better ENOB (12.6 bits vs. 12.1 bits at 170 MHz) but lower SFDR (89 dBc vs. 94 dBc) - suited for precision measurement over spectral purity. | Select AD9446BCPZ-125 when DC accuracy and harmonic distortion matter more than spurious-free dynamic range. |
| ADS5463IPFP | 13-bit, 500 MSPS, 64-pin HTQFP; no integrated reference; requires external clock buffer and reference. | Higher sampling rate enables Nyquist-rate digitization of wider IF bands, but demands more complex support circuitry and layout. | Select ADS5463IPFP only when >250 MSPS sampling is mandatory and board space allows external reference/buffer design. |
Compared with AD9446BCPZ-125 and ADS5463IPFP, the AD9445BSVZ-125 uniquely balances 14-bit resolution, 125 MSPS speed, integrated reference, and 94 dBc SFDR in a thermally optimized TQFP/EP package-making it optimal for cost-sensitive, high-density IF sampling in cellular infrastructure where spurious performance is critical.
Availability
AD9445BSVZ-125 is available at Aetrix Electronics and suitable for cellular infrastructure receivers, radar digitization, medical ultrasound beamforming, and communications test equipment requiring stable component supply across extended production lifecycles.
Supply support for AD9445BSVZ-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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, headquartered in Norwood, MA.
The AD9445 product line delivers high-speed, high-resolution ADCs specifically engineered for IF sampling in wireless infrastructure, defense, and instrumentation-emphasizing spurious-free dynamic range, thermal stability, and ease of system integration.
FAQ
What is the guaranteed maximum sampling rate for AD9445BSVZ-125?
The AD9445BSVZ-125 is guaranteed to operate at 125 MSPS across the full industrial temperature range (−40°C to +85°C), as specified in Table 4 of the datasheet. This is a speed-grade distinction from the AD9445BSVZ-105 (105 MSPS). Performance validation includes SNR, SFDR, and ENOB metrics at this rate with 2.0 V p-p input and DCS enabled.
Does AD9445BSVZ-125 require an external reference voltage?
No, the AD9445BSVZ-125 includes an internal trimmed 1.0 V reference (enabled by grounding the SENSE pin), eliminating the need for external reference ICs in most applications. External reference mode is supported via SENSE = AVDD1, but the internal reference provides ±2 mV load regulation and is sufficient for typical IF sampling use cases.
How does the RF ENABLE pin affect AD9445BSVZ-125 performance?
The RF ENABLE pin configures the analog front-end biasing: tied to AGND for optimal SFDR below 225 MHz IF, or to AVDD1 for >225 MHz IF. At 170 MHz, SFDR improves from 80 dBc to 94 dBc when RF ENABLE = AGND; at 300 MHz, connecting RF ENABLE to AVDD1 increases SFDR by ~10 dBc and raises AVDD2 current by 30 mA.
What are the power supply requirements for AD9445BSVZ-125?
The AD9445BSVZ-125 requires three supplies: AVDD1 = 3.3 V ±5% (335–424 mA), AVDD2 = 5.0 V ±5% (169–199 mA, +30 mA if RF ENABLE = AVDD1), and DRVDD = 3.3 V (63–78 mA for LVDS, 14 mA for CMOS). Grounding must separate AGND (analog), DGND (digital), and DRGND (LVDS output) with star-point connection.
Can AD9445BSVZ-125 output data in both LVDS and CMOS formats?
Yes, the AD9445BSVZ-125 supports both LVDS (ANSI-644 compatible) and CMOS output modes, selected via the OUTPUT MODE pin (low = CMOS, high = LVDS). LVDS mode uses D0± to D13± and DCO± pairs with 3.74 kΩ LVDS_BIAS resistor; CMOS mode uses single-ended D0–D13 and DCO outputs referenced to DRVDD.
AD9445BSVZ-125 Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 100-TQFP Exposed Pad
- Packaging:
- Tray
- Product Status:
- Active
- Number of Bits:
- 14
- Sampling Rate (Per Second):
- 125M
- 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:
- External, Internal
- Voltage - Supply, Analog:
- 3.3V, 5V
- Voltage - Supply, Digital:
- 3V ~ 3.6V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 100-TQFP-EP (14x14)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
AD9445BSVZ-125 FAQ
1.How can I place an order for AD9445BSVZ-125 through Aetrix?
Please submit a Request for Quotation (RFQ) for AD9445BSVZ-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 AD9445BSVZ-125 reliable?
The price and inventory of AD9445BSVZ-125 are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for AD9445BSVZ-125 is usually 5 days.
3.What payment methods are accepted for AD9445BSVZ-125?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for AD9445BSVZ-125 transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for AD9445BSVZ-125?
AD9445BSVZ-125 orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your AD9445BSVZ-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 AD9445BSVZ-125?
For technical support, including AD9445BSVZ-125 datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your AD9445BSVZ-125 requirements.
6.How does Aetrix verify that AD9445BSVZ-125 is sourced from the original manufacturer or authorized distributors?
All AD9445BSVZ-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 AD9445BSVZ-125 meets industry standards.
7.What is the process for return or replacement of AD9445BSVZ-125?
All AD9445BSVZ-125 units undergo pre-shipment inspection (PSI). If there is an issue with AD9445BSVZ-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 AD9445BSVZ-125 part is unused and in its original packaging.
Return procedure for AD9445BSVZ-125:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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