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Analog Devices Inc. LTC2158IUP-12#TRPBF
- Part No.:
- LTC2158IUP-12#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 64-WFQFN Exposed Pad
- Datasheet:
-
LTC2158IUP-12#TRPBF.pdf
- Description:
- IC ADC 12BIT PIPELINED 64QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,341
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Product details
Overview
LTC2158IUP-12#TRPBF from Analog Devices (acquired Linear Technology) is a dual-channel, 12-bit, 310Msps analog-to-digital converter optimized for high-frequency undersampling in communications systems. It delivers 67.6dBFS SNR, 88dB SFDR at 70MHz input, and 1.25GHz full-power bandwidth, with DDR LVDS outputs and single 1.8V supply operation - deployed in cellular basestations and software-defined radios.
For engineers reviewing the LTC2158IUP-12#TRPBF datasheet, LTC2158IUP-12#TRPBF pinout, LTC2158IUP-12#TRPBF application, or LTC2158IUP-12#TRPBF equivalent, key selection criteria include simultaneous sampling accuracy, low-latency 6-cycle pipeline, LVDS current programmability (1.75–4.5mA), clock duty cycle stabilization, and −40°C to +85°C industrial temperature rating.
Technical Context
The LTC2158IUP-12#TRPBF employs a pipelined ADC architecture with shared sample-and-hold for true simultaneous dual-channel acquisition. Its 1.25GHz S/H bandwidth enables wideband RF undersampling up to 907MHz while maintaining 67.1dBFS SNR at 140MHz input.
Digital interface uses DDR LVDS with programmable output current (1.75–4.5mA), optional internal 100Ω termination, and configurable CLKOUT phase shift (0°/45°/90°/135°). SPI-controlled mode registers manage sleep/nap modes, duty cycle stabilization, and LVDS configuration - all operating from a single 1.8V supply.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit with no missing codes over temperature - guarantees monotonicity and full code coverage in demanding measurement applications. |
| Sampling Rate | 310Msps maximum - supports Nyquist sampling of signals up to 155MHz or undersampling of IF/RF bands up to 907MHz. |
| SNR / SFDR | 67.6dBFS SNR and 88dB SFDR at 70MHz - enables high-fidelity digitization of multi-tone cellular or radar signals. |
| Input Bandwidth | 1.25GHz full-power bandwidth - allows direct RF sampling without external bandpass filtering in SDR front-ends. |
| Power Consumption | 688mW total at 310Msps - balances performance and thermal budget in dense FPGA-ADC signal chains. |
| Supply Voltage | Single 1.8V analog (VDD) and digital (OVDD) supply - simplifies power delivery and reduces board-level DC/DC count. |
| Pipeline Latency | 6 clock cycles - enables deterministic timing alignment for real-time digital downconversion in FPGAs. |
Pinout & Package
64-lead (9mm × 9mm) plastic QFN package with exposed thermal pad (Pin 65 = GND), requiring soldering to PCB ground for thermal and electrical integrity. Pin functions validated per Linear Technology LTC2158-12 datasheet Rev. FA.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD (Pins 1,2,15,16,17,64) | Analog power supply | 1.8V supply for ADC core and S/H; requires local 0.1µF ceramic bypass per group. |
| AINA+/AINA−, AINB+/AINB− | Differential analog inputs | Simultaneous dual-channel sampling; driven differentially around VCM (0.435•VDD). |
| ENC+/ENC− | Encode clock inputs | Differential sampling trigger; accepts sine wave, LVDS, PECL, TTL, or CMOS with optional duty cycle stabilization. |
| DA0_1+ to DA10_11+, DB0_1+ to DB10_11+ | DDR LVDS data outputs | 12-bit DDR outputs per channel (6 pairs each); even/odd bits multiplexed on CLKOUT edges. |
| CLKOUT+/CLKOUT− | Data output clock | LVDS clock synchronized to DDR data; programmable 0°–315° phase shift for FPGA timing closure. |
| OF+/OF− | Overflow indicator | DDR-multiplexed overflow flag for both channels - same latency as data, critical for clipping detection. |
| PAR/SER, CS, SCK, SDI, SDO | SPI configuration interface | Serial programming mode (PAR/SER = GND) enables full register control of LVDS current, phase, and power modes. |
Key Features
| Feature | Design Value |
|---|---|
| Simultaneous dual-channel sampling | Shared encode circuit ensures precise inter-channel timing alignment (<1ps skew), essential for I/Q demodulation and beamforming. |
| Programmable LVDS output current | Seven selectable drive strengths (1.75–4.5mA) allow optimization of signal integrity, EMI, and receiver termination across varying trace lengths. |
| Integrated clock duty cycle stabilizer | Enables robust operation with 30–70% input clock duty cycle - eliminates need for external clock conditioners in variable-rate systems. |
| Low-power sleep and nap modes | Sleep mode draws <5mW; nap mode consumes 190mW - extends uptime in battery-backed test equipment or portable SDRs. |
| Internal 1.25V reference with external option | SENSE pin selects internal reference (±0.66V range) or external 1.23–1.27V source - supports precision gain calibration in medical imaging systems. |
Applications
| Cellular Basestation Receivers | Software Defined Radios |
|---|---|
Use Scenario: Digitizing multiple 20MHz LTE carriers in macrocell and small cell base stations using zero-IF or low-IF architectures. IC Role / Device Role / Timing Role: Dual-channel ADC performs simultaneous I/Q sampling at 307.2Msps, feeding FPGA-based digital downconverters with deterministic 6-cycle latency. Use Value: 88dB SFDR prevents adjacent carrier interference; 1.25GHz bandwidth supports direct sampling of 2.6GHz TDD-LTE bands. | Use Scenario: Wideband spectrum monitoring and agile waveform generation in military and public safety radios. IC Role / Device Role / Timing Role: High-speed ADC captures 100MHz instantaneous bandwidth for real-time FFT analysis and adaptive modulation recognition. Use Value: 67.6dBFS SNR ensures accurate amplitude measurement across 15–900MHz; DDR LVDS eases FPGA interface timing closure. |
| Medical Ultrasound Imaging | High-Speed Test Equipment |
Use Scenario: Beamformed echo digitization in portable ultrasound systems with 5–15MHz transducer frequencies. IC Role / Device Role / Timing Role: Simultaneous sampling of multiple receive channels enables dynamic focusing and harmonic imaging with sub-nanosecond inter-channel sync. Use Value: ±0.1LSB DNL preserves low-contrast lesion visibility; low 0.6LSBRMS transition noise improves B-mode image clarity. | Use Scenario: Real-time signal analysis in oscilloscopes and vector signal analyzers requiring >100MHz instantaneous bandwidth. IC Role / Device Role / Timing Role: Front-end ADC captures transient events at 310Msps with 6-cycle deterministic latency for hardware-triggered capture. Use Value: 64.4dBFS SNR at 15MHz and 67.0dBFS at 140MHz enables accurate spectral purity measurement of RF components. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed dual-channel ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9680BCPZ-500 | 14-bit, 500Msps, JESD204B serial output, higher power (1.5W), wider temp range (−55°C to +105°C) | Requires FPGA with JESD204B support; better suited for phased-array radar where resolution >12-bit is critical | Select when higher ENOB and serial interface outweigh cost and power penalties. |
| LTC2268IUP-12#TRPBF | 12-bit, 105Msps, lower power (340mW), no duty cycle stabilizer, same QFN-64 package and SPI interface | Targeted at lower-bandwidth instrumentation where 310Msps is unnecessary and thermal headroom is constrained | Select when system bandwidth ≤105Msps and ultra-low power is prioritized over speed. |
Compared with AD9680BCPZ-500 and LTC2268IUP-12#TRPBF, the LTC2158IUP-12#TRPBF uniquely balances 310Msps speed, 67.6dBFS SNR, DDR LVDS simplicity, and industrial temperature operation - making it optimal for cost-sensitive, thermally constrained SDR and basestation designs needing deterministic timing.
Availability
LTC2158IUP-12#TRPBF is available at Aetrix Electronics and suitable for cellular basestations, software-defined radios, and medical ultrasound imaging requiring stable component supply, long-term lifecycle assurance, and industrial-grade temperature performance.
Supply support for LTC2158IUP-12#TRPBF 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 LTC2158IUP-12#TRPBF belongs to ADI's high-speed ADC product line, designed specifically for wideband, low-latency digitization in RF-intensive applications such as wireless infrastructure and test instrumentation.
FAQ
What is the operating temperature range of the LTC2158IUP-12#TRPBF?
The LTC2158IUP-12#TRPBF is rated for industrial operation from −40°C to +85°C. This is confirmed by the "I" grade designation in the part number and specified in the Absolute Maximum Ratings table of the official datasheet. The device maintains full performance specifications-including 67.6dBFS SNR and 88dB SFDR-across this entire range when operated within recommended supply and layout conditions.
Does the LTC2158IUP-12#TRPBF support external voltage reference?
Yes, the LTC2158IUP-12#TRPBF supports external reference via the SENSE pin. Applying a precision 1.230V–1.270V reference to SENSE configures the input range to ±0.528•VSENSE (e.g., ±0.66V for 1.25V reference). This capability is documented in the Analog Input section and Converter Characteristics tables, enabling calibrated gain matching in multi-channel medical or instrumentation systems.
How many LVDS output pairs does the LTC2158IUP-12#TRPBF have?
The LTC2158IUP-12#TRPBF has 12 dedicated LVDS differential output pairs: six for Channel A (DA0_1+ to DA10_11+), six for Channel B (DB0_1+ to DB10_11+), plus one pair for overflow (OF+/OF−) and one for CLKOUT (CLKOUT+/CLKOUT−), totaling 14 LVDS-capable pins (7 pairs). All outputs operate in DDR mode with programmable current and optional internal 100Ω termination.
What is the pipeline latency of the LTC2158IUP-12#TRPBF?
The pipeline latency of the LTC2158IUP-12#TRPBF is exactly six clock cycles, as explicitly stated in the DESCRIPTION section and verified in the Timing Characteristics table. This fixed, deterministic latency applies to all data bits and the overflow flag, enabling precise time-of-arrival alignment in FPGA-based digital signal processing pipelines used in radar and communications systems.
Can the LTC2158IUP-12#TRPBF operate with non-50% clock duty cycles?
Yes, the LTC2158IUP-12#TRPBF can operate with input clock duty cycles from 30% to 70% when the optional clock duty cycle stabilizer is enabled via SPI Register A2 or parallel mode CS control. With stabilizer active, the internal sampling clock is regenerated to a precise 50% duty cycle - a feature confirmed in the Applications Information section and critical for maintaining SNR in variable-rate or jitter-prone clock environments.
LTC2158IUP-12#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 64-WFQFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 310M
- Number of Inputs:
- 2
- Input Type:
- Differential
- Data Interface:
- LVDS - 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:
- 1.74V ~ 1.9V
- Voltage - Supply, Digital:
- 1.74V ~ 1.9V
- Features:
- Simultaneous Sampling
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 64-QFN (9x9)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2158IUP-12#TRPBF FAQ
1.How can I place an order for LTC2158IUP-12#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2158IUP-12#TRPBF 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 LTC2158IUP-12#TRPBF reliable?
The price and inventory of LTC2158IUP-12#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2158IUP-12#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC2158IUP-12#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2158IUP-12#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2158IUP-12#TRPBF?
LTC2158IUP-12#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2158IUP-12#TRPBF 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 LTC2158IUP-12#TRPBF?
For technical support, including LTC2158IUP-12#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2158IUP-12#TRPBF requirements.
6.How does Aetrix verify that LTC2158IUP-12#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC2158IUP-12#TRPBF 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 LTC2158IUP-12#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC2158IUP-12#TRPBF?
All LTC2158IUP-12#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2158IUP-12#TRPBF, 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 LTC2158IUP-12#TRPBF part is unused and in its original packaging.
Return procedure for LTC2158IUP-12#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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