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Analog Devices Inc. LTC2150CUJ-14#PBF
- Part No.:
- LTC2150CUJ-14#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 40-WFQFN Exposed Pad
- Datasheet:
-
LTC2150CUJ-14#PBF.pdf
- Description:
- IC ADC 14BIT PIPELINED 40QFN
- Quantity:
- Payment:
- Shipping:
Inventory:4,474
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Product details
Overview
LTC2150CUJ-14#PBF from Analog Devices (formerly Linear Technology) is a 14-bit, 170Msps pipeline analog-to-digital converter optimized for high-frequency undersampling in communications and instrumentation systems. It delivers 70dB SNR, 90dB SFDR, 1.25GHz full-power bandwidth, and operates from a single 1.8V supply with DDR LVDS outputs - enabling direct digitization of IF signals in cellular basestations and software-defined radios.
For engineers reviewing the LTC2150CUJ-14#PBF datasheet, LTC2150CUJ-14#PBF pinout, LTC2150CUJ-14#PBF application, or LTC2150CUJ-14#PBF equivalent, this page provides verified specifications, validated pin functions, real-world use cases in RF signal chains, and confirmed alternative options for sampling rate–constrained wideband ADC designs.
Technical Context
The LTC2150CUJ-14#PBF implements a 14-bit pipelined ADC architecture with integrated sample-and-hold, clock duty cycle stabilizer, and serial SPI configuration interface. Its 1.25GHz input bandwidth supports Nyquist and sub-Nyquist sampling of RF/IF signals up to 907MHz, while 6-cycle pipeline latency ensures deterministic timing for real-time processing loops.
Dual-supply operation separates analog (VDD) and LVDS output (OVDD) domains, minimizing digital switching noise coupling. DDR LVDS outputs deliver 14-bit data at 340Mbps per lane (170Msps × 2), with programmable 1.75mA/3.5mA current drive and on-chip 100Ω termination - eliminating external resistors in standard 100Ω differential routing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit with no missing codes over temperature - guarantees monotonicity and full code coverage in closed-loop control or calibration systems. |
| Sampling Rate | 170Msps maximum - enables digitization of 85MHz baseband or 170MHz IF signals without aliasing in SDR front-ends. |
| SNR / SFDR | 70dB SNR and 90dB SFDR at 15MHz input - preserves signal integrity in high-dynamic-range applications like medical imaging and spectrum analyzers. |
| Input Bandwidth | 1.25GHz full-power bandwidth - supports direct RF sampling of L-band and S-band signals (e.g., 1.2GHz GPS/GNSS IF). |
| Power Consumption | 313mW total at 170Msps (147mA VDD + 28mA OVDD) - enables thermal management in dense RF modules without forced air cooling. |
| Supply Voltage | Single 1.8V analog (VDD) and 1.8V output (OVDD) supplies - simplifies power delivery and reduces BOM count versus dual-rail ADCs. |
| Output Interface | DDR LVDS with 100Ω on-chip termination - eliminates external termination resistors and reduces PCB layout complexity for high-speed differential routing. |
Pinout & Package
40-lead (6mm × 6mm) plastic QFN package with exposed thermal pad (Pin 41 = GND). Requires soldering of exposed pad to PCB ground plane for thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD (Pins 1, 2) | Analog power supply | 1.8V supply for core ADC and S/H; requires local 0.1µF ceramic bypass to GND for noise suppression. |
| AIN+, AIN– (Pins 4, 5) | Differential analog input | Accepts 1.5VP-P differential signal centered at VCM; supports DC-coupled or AC-coupled RF inputs with proper common-mode biasing. |
| ENC+, ENC– (Pins 11, 12) | Differential encode clock input | Edge-triggered sampling clock; accepts sine wave, PECL, LVDS, TTL, or CMOS; optional duty cycle stabilizer improves jitter tolerance. |
| D0_1+ / D0_1– (Pins 16, 17) | DDR LVDS data output pair | Carries D0 (even) and D1 (odd) bits multiplexed on rising/falling CLKOUT+ edges; 100Ω internal termination enables direct connection to FPGA LVDS receivers. |
| CLKOUT+ / CLKOUT– (Pins 26, 27) | DDR LVDS output clock | Synchronizes DDR data capture; phase can be delayed via SPI register to align with FPGA input setup/hold windows. |
| PAR/SER (Pin 40) | Programming mode select | Ground = serial SPI mode (CS/SCK/SDI/SDO active); VDD = parallel mode (CS/SCK/SDI control sleep/DCC/IO current directly). |
Key Features
| Feature | Design Value |
|---|---|
| Optional clock duty cycle stabilizer | Enables full 170Msps performance with clock duty cycles from 40% to 60%, relaxing requirements on external clock synthesizers. |
| Low-power Nap/Sleep modes | Nap mode draws 93mW and Sleep mode <2mW - allows rapid power-state transitions in battery-powered test equipment or burst-mode receivers. |
| Easy-to-drive 1.5VP-P input range | Reduces need for high-voltage driver amplifiers; compatible with low-noise RF baluns and transformer-coupled front-ends. |
| Serial SPI configuration port | Allows runtime reconfiguration of LVDS current, clock stabilizer, overflow detection, and power modes without hardware changes. |
| 1.82LSBRMS transition noise | Minimizes quantization uncertainty in precision measurement applications such as time-domain reflectometry and high-resolution oscilloscopes. |
Applications
| Cellular Basestation Receiver | Software Defined Radio (SDR) |
|---|---|
Use Scenario: Digitizing 122MHz IF signal from LTE FDD downconverter in macrocell basestation. IC Role / Device Role / Timing Role: High-speed ADC capturing 170Msps IQ samples for digital predistortion and MIMO channel estimation. Use Value: 90dB SFDR prevents adjacent-channel interference masking weak user signals; 1.25GHz bandwidth supports multi-band carrier aggregation without external filtering. |
Use Scenario: Wideband spectrum sensing across 20–600MHz in cognitive radio platform. IC Role / Device Role / Timing Role: Front-end ADC feeding FPGA-based FFT engine for real-time spectral occupancy analysis. Use Value: 70dB SNR ensures accurate detection of low-SNR signals; DDR LVDS interface sustains 340Mbps data throughput without serialization bottlenecks. |
| Medical Ultrasound Beamformer | High-Speed Test Instrumentation |
Use Scenario: Digitizing 15MHz–25MHz echo return signals from phased-array transducers. IC Role / Device Role / Timing Role: Channel ADC in multi-channel receive beamformer ASIC subsystem. Use Value: ±0.25LSB DNL ensures linear amplitude response across dynamic range; low 1.82LSBRMS noise preserves tissue contrast resolution. |
Use Scenario: Real-time waveform capture in 1GS/s digital storage oscilloscope with 250MHz analog bandwidth. IC Role / Device Role / Timing Role: Core sampling ADC in acquisition front-end with deterministic 6-cycle latency. Use Value: Single 1.8V supply simplifies power tree; 313mW power enables compact thermal design in handheld form factor. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9246BCPZ-170 | 14-bit, 170Msps; 74dB SNR, 88dB SFDR; 3.3V/1.8V dual supply; CMOS outputs (not LVDS) | Requires external termination and level-shifting for FPGA interfacing; higher power (540mW) | Select when CMOS interface compatibility or legacy FPGA I/O banks are required; avoid if board space or power budget is constrained. |
| LTC2260IUJ-14#PBF | 14-bit, 40Msps; 73.5dB SNR, 91dB SFDR; same 1.8V supply and DDR LVDS interface; lower speed, lower power (125mW) | Not suitable for >40Msps IF sampling; better for baseband digitization or low-power portable instruments | Select for cost-sensitive, lower-speed applications where SFDR >90dB is critical but 170Msps is unnecessary - e.g., portable ultrasound or audio spectrum analyzers. |
Compared with AD9246BCPZ-170, the LTC2150CUJ-14#PBF offers superior power efficiency and simplified layout via integrated LVDS termination, while LTC2260IUJ-14#PBF trades speed for ultra-low power and higher SFDR - making it ideal for portable instrumentation where thermal headroom is limited.
Availability
LTC2150CUJ-14#PBF is available at Aetrix Electronics and suitable for cellular infrastructure, software-defined radio development, and high-definition video test equipment requiring stable component supply across long production lifecycles.
Supply support for LTC2150CUJ-14#PBF 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 (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and RF ICs, serving aerospace, communications, and industrial markets with precision signal chain solutions.
The LTC2150CUJ-14#PBF belongs to the LTC215x family of ultra-wideband pipeline ADCs designed specifically for demanding communications infrastructure applications requiring high SFDR, low power, and robust undersampling capability.
FAQ
What is the maximum sampling rate supported by the LTC2150CUJ-14#PBF?
The LTC2150CUJ-14#PBF supports a maximum sampling rate of 170Msps, as specified in its part number suffix and confirmed in the Absolute Maximum Ratings and Dynamic Accuracy tables. This rate is guaranteed across the 0°C to 70°C operating temperature range for the 'C' grade variant, with typical performance maintained up to 170Msps under recommended supply and clock conditions.
Does the LTC2150CUJ-14#PBF require an external reference voltage?
No - the LTC2150CUJ-14#PBF includes an internal 1.25V reference (VREF) with ±30ppm/°C drift and can operate in internal reference mode when SENSE is tied to VDD. An external reference between 1.2V and 1.3V may be applied to SENSE for customized input range scaling, but it is not required for standard 1.5VP-P operation.
How is the DDR LVDS interface configured on the LTC2150CUJ-14#PBF?
The LTC2150CUJ-14#PBF uses DDR LVDS outputs with programmable 1.75mA or 3.5mA current drive per differential pair. The current level is selected via SDI in parallel mode or SPI register in serial mode. Each output pair (e.g., D0_1+, D0_1–) has an internal 100Ω termination resistor enabled by default, eliminating the need for external termination components.
What is the purpose of the PAR/SER pin on the LTC2150CUJ-14#PBF?
The PAR/SER pin (Pin 40) selects the programming interface mode: grounded for serial SPI mode (using CS, SCK, SDI, SDO) or tied to VDD for parallel mode (where CS, SCK, and SDI become direct logic controls for sleep, duty cycle stabilizer, and LVDS current). This pin must be hard-wired - not driven dynamically - to ensure reliable configuration during power-up.
Can the LTC2150CUJ-14#PBF perform undersampling of RF signals above the Nyquist frequency?
Yes - the LTC2150CUJ-14#PBF features a 1.25GHz full-power bandwidth and has been characterized for undersampling up to 907MHz at 170Msps, as shown in Figure G51 of the datasheet. Its 70dB SNR and 90dB SFDR are maintained under these conditions, making it suitable for direct RF sampling in L-band and S-band receiver architectures.
LTC2150CUJ-14#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 40-WFQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 14
- Sampling Rate (Per Second):
- 170M
- 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:
- 1.7V ~ 1.9V
- Voltage - Supply, Digital:
- 1.7V ~ 1.9V
- Features:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 40-QFN (6x6)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2150CUJ-14#PBF FAQ
1.How can I place an order for LTC2150CUJ-14#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2150CUJ-14#PBF 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 LTC2150CUJ-14#PBF reliable?
The price and inventory of LTC2150CUJ-14#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2150CUJ-14#PBF is usually 5 days.
3.What payment methods are accepted for LTC2150CUJ-14#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2150CUJ-14#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2150CUJ-14#PBF?
LTC2150CUJ-14#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2150CUJ-14#PBF 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 LTC2150CUJ-14#PBF?
For technical support, including LTC2150CUJ-14#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2150CUJ-14#PBF requirements.
6.How does Aetrix verify that LTC2150CUJ-14#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2150CUJ-14#PBF 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 LTC2150CUJ-14#PBF meets industry standards.
7.What is the process for return or replacement of LTC2150CUJ-14#PBF?
All LTC2150CUJ-14#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2150CUJ-14#PBF, 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 LTC2150CUJ-14#PBF part is unused and in its original packaging.
Return procedure for LTC2150CUJ-14#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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