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Analog Devices Inc. LTC2150IUJ-14#PBF
- Part No.:
- LTC2150IUJ-14#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 40-WFQFN Exposed Pad
- Datasheet:
-
LTC2150IUJ-14#PBF.pdf
- Description:
- IC ADC 14BIT PIPELINED 40QFN
- Quantity:
- Payment:
- Shipping:
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Product details
Overview
LTC2150IUJ-14#PBF from Analog Devices (formerly Linear Technology) is a 14-bit, 170Msps analog-to-digital converter optimized for undersampling wideband RF signals in communications infrastructure. It delivers 70dB SNR, 90dB SFDR, and 1.25GHz full-power bandwidth with single 1.8V supply operation and DDR LVDS outputs. It serves as the front-end digitizer in cellular basestations and software-defined radios.
For engineers reviewing the LTC2150IUJ-14#PBF datasheet, LTC2150IUJ-14#PBF pinout, LTC2150IUJ-14#PBF application, or LTC2150IUJ-14#PBF equivalent, key selection criteria include its guaranteed –40°C to +85°C industrial temperature range, 14-bit no-missing-codes performance, low 313mW power at 170Msps, and compatibility with differential sine wave, LVDS, or CMOS clock inputs.
Technical Context
The LTC2150IUJ-14#PBF employs a pipelined ADC architecture with integrated sample-and-hold and correction logic, enabling six-cycle pipeline latency and stable AC performance up to 1.25GHz input frequency. Its internal reference supports ±0.75V or programmable ±0.6×VSENSE input ranges, and the optional clock duty cycle stabilizer maintains performance across varying input clock duty cycles.
Digital interface uses DDR LVDS outputs with configurable 1.75mA/3.5mA current drive and on-chip 100Ω termination. Configuration is performed via a 3-wire SPI port supporting both serial (PAR/SER = GND) and parallel (PAR/SER = VDD) programming modes, with dedicated pins for sleep and nap mode control.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit with no missing codes over temperature - ensures monotonicity and precision in high-dynamic-range signal capture. |
| Sampling Rate | 170Msps maximum - supports Nyquist-sampled baseband or undersampled IF/RF signals up to ~85MHz. |
| SNR / SFDR | 70dB SNR and 90dB SFDR at 15MHz input - enables high-fidelity digitization of weak signals amid strong interferers. |
| Input Bandwidth | 1.25GHz full-power bandwidth - allows direct RF sampling of L-band and S-band signals without external amplification. |
| Power Consumption | 313mW total at 170Msps (147mA IVDD + 28mA IOVDD) - enables dense multi-channel ADC implementations with thermal manageability. |
| Supply Voltage | Single 1.8V analog (VDD) and 1.8V output (OVDD) supplies - simplifies power delivery and reduces board-level DC/DC count. |
| Operating Temperature | –40°C to +85°C - qualified for industrial and outdoor wireless infrastructure deployments. |
Pinout & Package
40-lead (6mm × 6mm) plastic QFN package with exposed thermal pad (Pin 41 = GND), requiring soldering to PCB ground for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD (Pins 1, 2) | Analog power supply | 1.8V supply for core ADC circuitry; requires local 0.1µF ceramic bypass to GND. |
| AIN+, AIN– (Pins 4, 5) | Differential analog input | Accepts 1.5VP-P differential signal centered at VCM; supports high-Z CMOS S/H with 1.25GHz BW. |
| ENC+, ENC– (Pins 11, 12) | Differential encode clock input | Edge-triggered sampling control; accepts sine, LVDS, PECL, TTL, or CMOS; duty cycle stabilizer optional. |
| D0_1+ to D12_13+ (Pins 16–34, even) | DDR LVDS data output (even bits) | Even data bits (D0, D2,…D12) appear when CLKOUT+ is low; 100Ω on-chip termination enabled by default. |
| D0_1– to D12_13– (Pins 17–33, odd) | DDR LVDS data output (odd bits) | Odd data bits (D1, D3,…D13) appear when CLKOUT+ is high; differential swing configurable (125–454mV). |
| CLKOUT+, CLKOUT– (Pins 26, 27) | Data output clock | Synchronizes DDR LVDS data; phase delay programmable via SPI to align with FPGA/ASIC capture timing. |
| OF+, OF– (Pins 14, 15) | Overflow/underflow flag | Indicates saturation event; valid only during respective half-cycle of CLKOUT+ to prevent metastability. |
| PAR/SER (Pin 40) | Programming mode select | GND = serial SPI mode (CS/SCK/SDI/SDO active); VDD = parallel mode (CS/SCK/SDI become discrete control inputs). |
Key Features
| Feature | Design Value |
|---|---|
| DDR LVDS outputs with programmable current | Reduces EMI and enables long trace routing at 340Mbps per lane; 1.75mA/3.5mA selection optimizes power vs. signal integrity. |
| Optional clock duty cycle stabilizer | Maintains >70dB SNR and >90dB SFDR even with 30%–70% input clock duty cycle - eliminates need for external clock conditioning. |
| Low-power Nap and Sleep modes | Nap mode draws 93mW (vs. 313mW active); Sleep mode draws <2mW - enables rapid power-state transitions in burst-mode systems. |
| Integrated 1.25V reference with ±30ppm/°C drift | Eliminates external reference IC and associated layout complexity while maintaining 70dB SNR over temperature. |
| Serial SPI configuration interface | Enables runtime reconfiguration of output format, clock phase, power modes, and LVDS current - critical for adaptive radio architectures. |
Applications
| Cellular Basestation Receiver | Software-Defined Radio (SDR) |
|---|---|
Use Scenario: Digitizing 70MHz–220MHz LTE/WCDMA IF signals in macrocell remote radio heads. IC Role / Device Role / Timing Role: Primary ADC front-end capturing dual-channel I/Q data at 170Msps with 70dB SNR for digital predistortion and channel estimation. Use Value: 1.25GHz input bandwidth enables direct IF sampling without image-reject filters; DDR LVDS reduces FPGA pin count by 50% vs. CMOS. | Use Scenario: Reconfigurable wideband receiver in military SATCOM terminals operating across 2MHz–2GHz. IC Role / Device Role / Timing Role: High-dynamic-range digitizer supporting real-time spectrum analysis and adaptive waveform decoding. Use Value: 90dB SFDR suppresses harmonics from strong adjacent channels; SPI programmability allows on-the-fly gain and clock phase adjustment. |
| Medical Ultrasound Beamformer | High-Speed Test Equipment |
Use Scenario: Channel digitization in portable ultrasound systems requiring compact, low-power, high-SNR acquisition. IC Role / Device Role / Timing Role: Time-aligned sampling of 5–15MHz echo returns across 64+ channels with sub-1LSB INL. Use Value: ±0.25LSB typical DNL and 1.82LSBRMS transition noise preserve fine tissue contrast; 313mW power enables battery operation. | Use Scenario: Real-time signal analysis in 100MHz+ bandwidth oscilloscopes and vector signal analyzers. IC Role / Device Role / Timing Role: High-fidelity acquisition engine capturing transient RF events with minimal aperture jitter (0.15psRMS). Use Value: Six-cycle fixed latency enables deterministic trigger-to-capture timing; 1.25GHz BW supports third-harmonic analysis of 400MHz signals. |
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; JESD204A interface instead of DDR LVDS; higher 450mW power; 0.95GHz input BW. | Requires FPGA with JESD204A PHY; better suited for high-channel-count systems needing deterministic lane alignment. | Select AD9246BCPZ-170 when migrating to serial interface standards or when system-level lane synchronization is required. |
| LTC2268IUP-14 | 14-bit, 105Msps; lower power (225mW); 1.0GHz input BW; SPI-configurable but no duty cycle stabilizer. | Targeted at cost-sensitive, lower-bandwidth instrumentation where 170Msps is not required. | Select LTC2268IUP-14 when system sampling rate can be reduced to ≤105Msps and power budget is tighter than 313mW. |
Compared with AD9246BCPZ-170 and LTC2268IUP-14, the LTC2150IUJ-14#PBF uniquely balances 170Msps speed, 1.25GHz analog bandwidth, DDR LVDS simplicity, and industrial temperature rating - making it optimal for space-constrained, thermally demanding wireless infrastructure designs where interface overhead and clock flexibility are critical.
Availability
LTC2150IUJ-14#PBF is available at Aetrix Electronics and suitable for cellular basestations, software-defined radios, medical ultrasound systems, and high-speed test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC2150IUJ-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, Inc. (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and DSP technologies, serving industrial, automotive, communications, and healthcare markets.
The LTC2150IUJ-14#PBF belongs to the LTC215x family of ultra-wideband, low-power, high-SFDR ADCs designed specifically for demanding communications infrastructure applications requiring direct RF sampling and flexible digital interfacing.
FAQ
What is the guaranteed operating temperature range for the LTC2150IUJ-14#PBF?
The LTC2150IUJ-14#PBF is specified for continuous operation from –40°C to +85°C (industrial grade). This is confirmed in the Absolute Maximum Ratings table and Converter Characteristics section of the datasheet, where all "l"-denoted parameters apply across this full range. The part marking "I" in LTC2150IUJ-14#PBF explicitly denotes the industrial temperature grade.
Does the LTC2150IUJ-14#PBF require an external reference voltage?
No - the LTC2150IUJ-14#PBF includes an internal 1.25V reference with ±30ppm/°C drift and supports two input range configurations: connecting SENSE to VDD enables ±0.75V range using the internal reference, while applying 1.2V–1.3V to SENSE selects ±0.6×VSENSE. External reference is optional and only needed for custom scaling.
How many data bits does each DDR LVDS pair carry on the LTC2150IUJ-14#PBF?
Each DDR LVDS pair (e.g., D0_1+, D0_1–) carries two data bits per clock cycle: even bits (D0, D2, ..., D12) appear when CLKOUT+ is low, and odd bits (D1, D3, ..., D13) appear when CLKOUT+ is high. This doubles effective data throughput without increasing pin count or clock frequency.
What is the pipeline latency of the LTC2150IUJ-14#PBF, and is it fixed?
The LTC2150IUJ-14#PBF has a fixed pipeline latency of six clock cycles, as stated in the Timing Characteristics table. This deterministic latency enables precise time-of-arrival measurements and simplifies timing closure in FPGA-based digital downconverters and beamformers.
Can the LTC2150IUJ-14#PBF operate with a non-50% clock duty cycle?
Yes - the LTC2150IUJ-14#PBF includes an optional clock duty cycle stabilizer that maintains full AC performance (70dB SNR, 90dB SFDR) across input clock duty cycles from 30% to 70%. When disabled, minimum tL/tH is 1.5ns; when enabled, it relaxes to 1.5ns high/low time with up to 50ns max asymmetry.
LTC2150IUJ-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:
- -40°C ~ 85°C
- Supplier Device Package:
- 40-QFN (6x6)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2150IUJ-14#PBF FAQ
1.How can I place an order for LTC2150IUJ-14#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2150IUJ-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 LTC2150IUJ-14#PBF reliable?
The price and inventory of LTC2150IUJ-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 LTC2150IUJ-14#PBF is usually 5 days.
3.What payment methods are accepted for LTC2150IUJ-14#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2150IUJ-14#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2150IUJ-14#PBF?
LTC2150IUJ-14#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2150IUJ-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 LTC2150IUJ-14#PBF?
For technical support, including LTC2150IUJ-14#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2150IUJ-14#PBF requirements.
6.How does Aetrix verify that LTC2150IUJ-14#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2150IUJ-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 LTC2150IUJ-14#PBF meets industry standards.
7.What is the process for return or replacement of LTC2150IUJ-14#PBF?
All LTC2150IUJ-14#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2150IUJ-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 LTC2150IUJ-14#PBF part is unused and in its original packaging.
Return procedure for LTC2150IUJ-14#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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