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Analog Devices Inc. DC1532A-D
- Part No.:
- DC1532A-D
- Manufacturer:
- Analog Devices Inc.
- Package:
- Datasheet:
-
DC1532A-D.pdf
- Description:
- BOARD DEMO 65MSPS LTC2265-14
- Quantity:
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Product details
Overview
LTC2265-14 from Analog Devices (formerly Linear Technology) is a 14-bit, dual-channel, simultaneous-sampling analog-to-digital converter optimized for high-frequency communications signal digitization. It delivers 73.7dB SNR, 90dB SFDR, and ultralow 0.15psRMS aperture jitter at 65Msps sampling rate, enabling undersampling of IF signals up to 140MHz in cellular base station receivers.
For engineers reviewing the LTC2265-14 datasheet, LTC2265-14 pinout, LTC2265-14 application, or LTC2265-14 equivalent, this page provides verified technical context, validated LVDS serial output configuration, confirmed QFN-40 package mapping, and real-world design implications for multichannel data acquisition and software-defined radio front ends.
Technical Context
The LTC2265-14 integrates two independent 14-bit ADC cores with shared PLL-based clock conditioning and a dual-channel LVDS serializer. Its sample-and-hold circuit supports 800MHz full-power bandwidth and operates from a single 1.8V supply, with internal reference (1.25V ±25ppm/°C) and programmable input range (1–2VP-P).
Digital interface includes SPI-configurable modes (1-lane or 2-lane LVDS), differential or single-ended encode inputs, and hardware-selectable power states (Nap mode: 60mW; Sleep mode: 1mW). Pipeline latency is fixed at 6 cycles, and timing is guaranteed across –40°C to +85°C operation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit with no missing codes over temperature - ensures monotonicity and precision in wide-dynamic-range measurement systems. |
| Sampling Rate | 65Msps - supports Nyquist sampling of baseband signals up to 32.5MHz or IF undersampling up to 140MHz. |
| SNR / SFDR | 73.7dB SNR and 90dB SFDR at 70MHz input - enables high-fidelity digitization of LTE/WCDMA carriers with minimal noise floor degradation. |
| Aperture Jitter | 0.15psRMS - limits sampling uncertainty to <0.01 LSB at 140MHz, critical for high-IF receiver performance. |
| Power Consumption | 171mW total at 65Msps, 2-lane LVDS - balances performance and thermal budget in dense RF front-end PCB layouts. |
| Analog Input BW | 800MHz full-power bandwidth - preserves signal integrity for fast-rising RF pulses and wideband modulated waveforms. |
| Digital Interface | LVDS serial outputs (1- or 2-lane per channel), optional on-chip 100Ω termination - reduces PCB routing complexity and improves signal integrity without external resistors. |
Pinout & Package
Package: 40-lead (6mm × 6mm) plastic QFN with exposed pad (Pin 41 = GND), RoHS-compliant, thermal resistance θJA = 32°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN1+, AIN1– | Channel 1 differential analog input | Accepts 1–2VP-P signals; requires VCM1 bias (Pin 3) for common-mode setting. |
| ENC+, ENC– | Differential encode clock input | Triggers conversion on both edges; supports sine, PECL, LVDS, TTL, or CMOS drive with internal duty-cycle stabilization. |
| OUT1A+, OUT1A– | Channel 1 primary LVDS serial data output (2-lane mode) | Carries serialized 14-bit samples at 1/14 or 1/16 of fS; configurable for 1.75mA or 3.5mA output current. |
| DCO+, DCO– | Data clock output | Provides source-synchronous clock aligned to serialized data; cycle-to-cycle jitter ≤60psP-P. |
| FR+, FR– | Frame start output | Indicates start of new sample frame; period equals 2× encode clock in 2-lane mode. |
| PAR/SER | Programming mode select | Ground = SPI serial control; VDD = parallel logic control (CS/SCK/SDI/SDO repurposed). |
| VREF | Internal reference voltage output | 1.25V ±25ppm/°C; bypass with 1µF ceramic capacitor to support stable ADC gain calibration. |
| SENSE | Reference programming input | Configures input range: VDD → ±1V; GND → ±0.5V; 0.625–1.3V → ±0.8×VSENSE. |
Key Features
| Feature | Design Value |
|---|---|
| Simultaneous dual-channel sampling | Eliminates inter-channel skew for coherent I/Q demodulation and phased-array beamforming. |
| Ultralow 0.15psRMS aperture jitter | Enables clean undersampling of 70–140MHz IF signals without external jitter cleaners. |
| Serial LVDS output (1- or 2-lane) | Reduces interface pin count by >50% vs parallel LVCMOS, easing high-speed PCB layout and EMI control. |
| Internal clock duty-cycle stabilizer | Permits use of asymmetric clocks (e.g., from FPGA PLLs) without SNR degradation at full 65Msps rate. |
| Programmable power modes | Nap (60mW) and Sleep (1mW) modes enable dynamic power scaling in battery-powered SDR platforms. |
| Pin-compatible family | Shares footprint and pinout with LTC2264-14 (40Msps) and LTC2263-14 (25Msps) for scalable design reuse. |
Applications
| Cellular Base Station Receiver | Software Defined Radio (SDR) |
|---|---|
|
Use Scenario: Digitizing dual-path 70–80MHz IF signals from quadrature downconverters in LTE macrocell BTS. IC Role / Device Role / Timing Role: Simultaneous-sampling dual ADC providing time-aligned I/Q data streams with sub-0.1ps timing skew. Use Value: Maintains 90dB SFDR across 20MHz channel bandwidth, supporting 256-QAM modulation with <0.5% EVM. |
Use Scenario: Reconfigurable RF front end in portable SDR transceivers operating across HF/VHF/UHF bands. IC Role / Device Role / Timing Role: High-dynamic-range ADC core enabling real-time spectrum analysis and adaptive waveform reception. Use Value: 800MHz analog input bandwidth and 73.7dB SNR allow direct sampling of 100MHz+ instantaneous bandwidths. |
| Portable Medical Ultrasound | Multichannel Data Acquisition |
|
Use Scenario: Beamformed echo digitization in handheld ultrasound systems using 64+ element transducer arrays. IC Role / Device Role / Timing Role: Dual-channel ADC capturing synchronized RF echo returns with precise phase coherence. Use Value: ±1LSB INL and 1.2LSBRMS transition noise preserve tissue contrast resolution in B-mode imaging. |
Use Scenario: High-precision test equipment acquiring synchronized analog waveforms from multiple sensors in industrial monitoring. IC Role / Device Role / Timing Role: Simultaneous-sampling ADC ensuring deterministic inter-channel phase alignment for FFT-based diagnostics. Use Value: 6-cycle pipeline latency and deterministic timing enable tight synchronization across 8+ channels via daisy-chained encode clocks. |
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 |
|---|---|---|---|
| AD9257BCPZ-65 | 65Msps, 14-bit, dual-channel, but uses parallel CMOS outputs (not LVDS); higher power (320mW); no internal reference. | Requires external clock buffer and reference IC; better suited for legacy FPGA interfaces with wide data buses. | Select when existing board layout supports parallel interface and system-level jitter budget allows external clock conditioning. |
| LTC2264IUJ-14 | Same pinout and architecture, but rated for 40Msps max sampling rate; lower power (113mW); identical LVDS serialization and feature set. | Valid drop-in replacement where 40Msps meets bandwidth requirements; ideal for cost-optimized or thermally constrained designs. | Select when system bandwidth ≤20MHz and lower power dissipation is prioritized over maximum sample rate. |
Compared with AD9257BCPZ-65, the LTC2265-14 reduces PCB routing density and EMI via integrated LVDS serialization and eliminates external reference components; compared with LTC2264IUJ-14, it delivers 62.5% higher sample rate while maintaining identical thermal and layout compatibility.
Availability
LTC2265-14 is available at Aetrix Electronics and suitable for cellular infrastructure, software-defined radio development, and portable medical imaging requiring stable component supply and long-term production continuity.
Supply support for LTC2265-14 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 communications, industrial, automotive, and healthcare markets.
The LTC2265-14 belongs to ADI's high-speed precision ADC product line, designed specifically for demanding RF and IF digitization applications where dynamic range, timing accuracy, and low power coexist.
FAQ
What is the maximum input frequency supported by the LTC2265-14?
The LTC2265-14 features an 800MHz full-power analog input bandwidth, allowing accurate digitization of signals up to 140MHz under undersampling conditions. At 65Msps, its Nyquist zone extends to 32.5MHz, but the wide bandwidth enables high-IF sampling strategies essential for modern wireless receivers. Performance metrics like SNR and SFDR are specified up to 140MHz in the datasheet.
Does the LTC2265-14 require an external reference voltage?
No, the LTC2265-14 includes a precision internal reference (1.25V ±25ppm/°C) that supports all standard input ranges. The SENSE pin allows configuration: tied to VDD for ±1V range, GND for ±0.5V, or an external 0.625–1.3V source for ±0.8×VSENSE. External references are optional and used only when tighter gain stability or custom range is required.
How does the LVDS serialization work on the LTC2265-14?
The LTC2265-14 serializes each 14-bit sample into either 14 or 16 bits per lane depending on mode, transmitted over LVDS pairs at 1/14 or 1/16 of the sampling clock. In 2-lane mode, two bits per clock edge reduce data rate; in 1-lane mode, one bit per edge simplifies routing. Output current (1.75mA or 3.5mA) and internal 100Ω termination are configurable via SCK and SDO pins.
Can the LTC2265-14 operate with a single-ended encode clock?
Yes, the LTC2265-14 supports single-ended encode input by tying ENC– to GND and driving ENC+ with TTL, CMOS, or LVDS logic. The internal duty-cycle stabilizer remains active, preserving timing accuracy even with asymmetric clock waveforms - a key advantage for FPGA-generated clocks with variable duty cycles.
What power-saving modes does the LTC2265-14 support?
The LTC2265-14 offers three operational states: full-rate (171mW at 65Msps), Nap mode (60mW, retains configuration and bias), and Sleep mode (1mW, full shutdown with 1µs wake-up). These are controlled via SDI (parallel mode) or SPI register writes (serial mode), enabling dynamic power scaling in portable or burst-mode SDR applications.
DC1532A-D Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Packaging:
- Bulk
- Product Status:
- Active
- Number of A/D Converters:
- 2
- Number of Bits:
- 14
- Sampling Rate (Per Second):
- 65M
- Data Interface:
- Serial LVDS
- Input Range:
- 1 ~ 2Vpp
- Power (Typ) @ Conditions:
- 202mW @ 65MSPS
- Utilized IC / Part:
- LTC2265-14
- Contents:
- Board(s)
DC1532A-D FAQ
1.How can I place an order for DC1532A-D through Aetrix?
Please submit a Request for Quotation (RFQ) for DC1532A-D 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 DC1532A-D reliable?
The price and inventory of DC1532A-D are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for DC1532A-D is usually 5 days.
3.What payment methods are accepted for DC1532A-D?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for DC1532A-D transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for DC1532A-D?
DC1532A-D orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your DC1532A-D 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 DC1532A-D?
For technical support, including DC1532A-D datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your DC1532A-D requirements.
6.How does Aetrix verify that DC1532A-D is sourced from the original manufacturer or authorized distributors?
All DC1532A-D 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 DC1532A-D meets industry standards.
7.What is the process for return or replacement of DC1532A-D?
All DC1532A-D units undergo pre-shipment inspection (PSI). If there is an issue with DC1532A-D, 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 DC1532A-D part is unused and in its original packaging.
Return procedure for DC1532A-D:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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