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Analog Devices Inc. DC1525A-E
- Part No.:
- DC1525A-E
- Manufacturer:
- Analog Devices Inc.
- Package:
- Datasheet:
-
DC1525A-E.pdf
- Description:
- BOARD DEMO 40MSPS LTC2171-14
- Quantity:
- Payment:
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Product details
Overview
LTC2172-14 from Analog Devices (formerly Linear Technology) is a 14-bit, 65 Msps quad-channel simultaneous-sampling analog-to-digital converter optimized for high-dynamic-range communications signal digitization. It delivers 73.7 dB SNR, 90 dB SFDR, and 0.15 psRMS aperture jitter at full speed, enabling undersampling of IF signals up to 140 MHz in cellular base stations and software-defined radios.
For engineers reviewing the LTC2172-14 datasheet, LTC2172-14 pinout, LTC2172-14 application, or LTC2172-14 equivalent, key selection criteria include its 4-channel synchronization capability, serial LVDS output architecture with selectable 1-/2-lane modes, 1.8 V single-supply operation, and support for both internal and external reference configurations across –40°C to +85°C industrial temperature range.
Technical Context
The LTC2172-14 integrates four independent 14-bit ADC cores with a shared sample-and-hold front-end featuring 800 MHz full-power bandwidth and ultralow 0.15 psRMS jitter. Its digital interface uses serialized LVDS outputs per channel-either one bit per clock edge (1-lane) or two bits per clock edge (2-lane)-with programmable output current (1.75 mA or 3.5 mA) and on-chip 100 Ω termination.
Configuration is handled via SPI-compatible serial port or parallel logic inputs (CS/SCK/SDI/SDO), supporting dynamic mode selection including shutdown (1 mW), nap (75 mW), and differential/single-ended encode input drive. A duty-cycle stabilizer ensures consistent performance across wide input clock duty cycles without external conditioning.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit with no missing codes over temperature - guarantees monotonicity and full code coverage in precision measurement systems. |
| Sampling Rate | 65 Msps - supports real-time digitization of wideband IF signals up to 140 MHz using undersampling techniques. |
| SNR / SFDR | 73.7 dB / 90 dB at 70 MHz input - enables high-fidelity signal capture in demanding wireless infrastructure applications. |
| Aperture Jitter | 0.15 psRMS - minimizes sampling uncertainty, critical for maintaining ENOB above 12 bits at RF frequencies. |
| Power Consumption | 311 mW total at 65 Msps (2-lane, 3.5 mA mode) - balances performance and thermal management in dense multichannel systems. |
| Analog Supply | Single 1.8 V (VDD) with ±0.1 V tolerance - simplifies power delivery and reduces board-level DC/DC complexity. |
| Input Bandwidth | 800 MHz full-power - accommodates direct sampling of L-band and S-band RF signals without external amplification. |
Pinout & Package
The LTC2172-14 is housed in a 52-lead (7 mm × 8 mm) plastic QFN package with exposed thermal pad (Pin 53 = GND). Pin assignments are validated per Linear Technology document 21721014fb.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN1+ / AIN1– AIN2+ / AIN2– AIN3+ / AIN3– AIN4+ / AIN4– | Differential analog inputs for channels 1–4 | Accept 1–2 VP-P differential signals; require common-mode biasing via VCM12/VCM34 pins. |
| ENC+ / ENC– | Differential encode clock inputs | Trigger simultaneous sampling on rising/falling edges; support PECL/LVDS/TTL/CMOS drive with internal duty-cycle stabilization. |
| OUT1A+/– to OUT4B+/– | LVDS serialized data outputs | Two differential pairs per channel (A/B); configurable for 1- or 2-lane serialization with programmable current and on-chip termination. |
| VDD / OVDD / GND / OGND | Analog/digital supply and ground planes | Separate analog (VDD) and output driver (OVDD) supplies reduce noise coupling; exposed pad must be soldered to PCB ground for thermal and EMI control. |
| PAR/SER / CS / SCK / SDI / SDO | Mode configuration interface | Select serial (SPI) or parallel programming; configure lane count, output current, termination, and power modes without external logic. |
Key Features
| Feature | Design Value |
|---|---|
| Quad simultaneous sampling | Enables coherent multi-antenna processing and phase-aligned I/Q capture in MIMO and beamforming systems. |
| Serial LVDS interface | Reduces PCB trace count by >50% vs parallel CMOS outputs, easing layout in space-constrained RF modules. |
| Programmable input range | Supports 1–2 VP-P differential swing via SENSE pin, allowing optimization for varying signal chain gain distribution. |
| Internal clock duty-cycle stabilizer | Eliminates need for external clock conditioning circuitry, reducing BOM cost and layout area in timing-critical designs. |
| Low-power sleep/nap modes | Reduces idle power to 1 mW or 75 mW, extending operational life in battery-powered portable medical imaging devices. |
Applications
| Cellular Base Stations | Software Defined Radios |
|---|---|
Use Scenario: Digitizing multiple 20–100 MHz IF signals from antenna arrays in LTE/5G macrocells and small cells. IC Role / Device Role / Timing Role: Simultaneous-sampling ADC providing time-aligned I/Q data streams for digital predistortion and MIMO processing. Use Value: 90 dB SFDR prevents intermodulation distortion from adjacent carriers, while 0.15 psRMS jitter preserves EVM below 2.5% at 256-QAM. | Use Scenario: Reconfigurable RF front-end in military/commercial SDR platforms requiring agile frequency hopping and waveform adaptation. IC Role / Device Role / Timing Role: High-speed digitizer enabling real-time spectrum analysis and adaptive filtering across 10 MHz–2 GHz bands. Use Value: 800 MHz input bandwidth allows direct sampling of UHF/VHF bands; serial LVDS eases FPGA interface in compact SWaP-constrained enclosures. |
| Portable Medical Imaging | Multichannel Data Acquisition |
Use Scenario: Ultrasound beamformer digitizing echo returns from 64+ transducer elements in handheld diagnostic systems. IC Role / Device Role / Timing Role: Low-noise, low-power ADC capturing time-of-flight data with sub-nanosecond timing resolution. Use Value: 73.7 dB SNR ensures high contrast resolution in B-mode imaging; 1.8 V supply and 311 mW total power enable battery operation for >4 hours. | Use Scenario: Precision test equipment acquiring synchronized voltage/current waveforms across 4 sensor channels in automated manufacturing QA. IC Role / Device Role / Timing Role: Simultaneous-sampling ADC delivering deterministic latency and channel-to-channel skew <10 ps. Use Value: ±1 LSB INL and ±0.3 LSB DNL guarantee accurate harmonic analysis up to 50th order; SPI configuration enables remote calibration. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad-channel, 14-bit ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9694BCPZ-500 | 14-bit, 500 Msps, JESD204B interface, higher power (1.6 W), wider input bandwidth (2 GHz) | Targets high-end radar and wideband spectrum monitoring where throughput exceeds 65 Msps | Select when system requires >100 Msps aggregate rate or JESD204B backplane connectivity. |
| LTC2171-14 | Same pinout and feature set, but rated for 40 Msps max sampling rate and lower power (202 mW) | Suitable for cost-sensitive or thermally constrained applications where 65 Msps is unnecessary | Drop-in replacement if design operates ≤40 Msps and prioritizes power savings over peak speed. |
Compared with AD9694BCPZ-500, the LTC2172-14 offers lower power and simpler LVDS interfacing at reduced speed; compared with LTC2171-14, it provides 63% higher sampling rate with identical footprint and register map-enabling scalable platform design across performance tiers.
Availability
LTC2172-14 is available at Aetrix Electronics and suitable for cellular infrastructure, software-defined radio development, and portable medical imaging systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC2172-14 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. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, automotive, communications, and healthcare markets.
The LTC2172-14 belongs to ADI's high-speed precision ADC product line, designed specifically for applications demanding simultaneous multi-channel sampling, low jitter, and robust RF performance in compact, low-power form factors.
FAQ
What is the maximum sampling rate supported by the LTC2172-14?
The LTC2172-14 supports a maximum sampling rate of 65 Msps, verified in the official datasheet under recommended operating conditions. This rate is achievable in both 1-lane and 2-lane LVDS output modes, provided the serial data rate does not exceed 1000 Mbps. At 65 Msps with 2-lane serialization and 14-bit resolution, the DCO period is 1 ns, meeting the minimum tSER requirement.
Does the LTC2172-14 support external reference configuration?
Yes, the LTC2172-14 supports external reference configuration via the SENSE pin. Applying a voltage between 0.625 V and 1.3 V to SENSE sets the input range to ±0.8 × VSENSE, enabling precise scaling for custom signal chains. The device also provides internal reference options (±0.5 V or ±1 V) when SENSE is tied to GND or VDD, respectively.
How many LVDS data lanes does the LTC2172-14 use per channel?
The LTC2172-14 supports two LVDS data lane configurations per channel: 1-lane mode (one bit per clock edge) and 2-lane mode (two bits per clock edge). Lane selection is controlled by the CS pin in parallel programming mode or via SPI register write in serial mode, allowing flexible trade-offs between clock frequency and PCB routing density.
What is the purpose of the VCM12 and VCM34 pins on the LTC2172-14?
The VCM12 and VCM34 pins on the LTC2172-14 provide nominally VDD/2 common-mode bias voltages for differential analog inputs. VCM12 biases channels 1 and 2; VCM34 biases channels 3 and 4. Each must be bypassed to ground with a 0.1 µF ceramic capacitor to maintain low-noise, stable common-mode levels essential for optimal INL and SNR performance.
Can the LTC2172-14 operate with a single 1.8 V supply?
Yes, the LTC2172-14 operates from a single 1.8 V analog supply (VDD) and a separate 1.8 V output driver supply (OVDD), both specified from 1.7 V to 1.9 V. This dual-rail 1.8 V architecture isolates sensitive analog circuitry from digital switching noise while eliminating the need for multiple supply voltages, simplifying power system design for the LTC2172-14.
DC1525A-E Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Number of A/D Converters:
- 4
- Number of Bits:
- 14
- Sampling Rate (Per Second):
- 40M
- Data Interface:
- Serial LVDS
- Input Range:
- 1 ~ 2Vpp
- Power (Typ) @ Conditions:
- 256mW @ 40MSPS
- Utilized IC / Part:
- LTC2171-14
- Contents:
- Board(s)
DC1525A-E FAQ
1.How can I place an order for DC1525A-E through Aetrix?
Please submit a Request for Quotation (RFQ) for DC1525A-E 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 DC1525A-E reliable?
The price and inventory of DC1525A-E are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DC1525A-E is usually 5 days.
3.What payment methods are accepted for DC1525A-E?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DC1525A-E transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DC1525A-E?
DC1525A-E orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DC1525A-E 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 DC1525A-E?
For technical support, including DC1525A-E datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DC1525A-E requirements.
6.How does Aetrix verify that DC1525A-E is sourced from the original manufacturer or authorized distributors?
All DC1525A-E 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 DC1525A-E meets industry standards.
7.What is the process for return or replacement of DC1525A-E?
All DC1525A-E units undergo pre-shipment inspection (PSI). If there is an issue with DC1525A-E, 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 DC1525A-E part is unused and in its original packaging.
Return procedure for DC1525A-E:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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