My Inquiry
My Account
Analog Devices Inc. LTC2171IUKG-12#PBF
- Part No.:
- LTC2171IUKG-12#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 52-WFQFN Exposed Pad
- Datasheet:
-
LTC2171IUKG-12#PBF.pdf
- Description:
- IC ADC 12BIT PIPELINED 52QFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,912
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC2171IUKG-12#PBF from Analog Devices (formerly Linear Technology) is a 12-bit, 4-channel simultaneous-sampling analog-to-digital converter optimized for high-frequency communications signal digitization. It delivers 71dB SNR and 90dB SFDR at 40Msps, with ultralow 0.15psRMS aperture jitter, enabling undersampling of IF signals up to 140MHz in cellular base stations and software-defined radios.
For engineers reviewing the LTC2171IUKG-12#PBF datasheet, LTC2171IUKG-12#PBF pinout, LTC2171IUKG-12#PBF application, or LTC2171IUKG-12#PBF equivalent, key selection criteria include its quad-channel synchronization capability, serial LVDS output architecture (1- or 2-lane), 1.8V single-supply operation, and industrial temperature range (–40°C to +85°C).
Technical Context
The LTC2171IUKG-12#PBF implements four independent 12-bit ADC cores with shared sample-and-hold and internal clock duty cycle stabilizer, supporting differential or single-ended encode inputs (PECL/LVDS/TTL/CMOS). Its 800MHz full-power bandwidth enables wideband RF sampling without external front-end attenuation.
Digital outputs use programmable serial LVDS drivers with selectable 1.75mA or 3.5mA current modes and optional on-chip 100Ω termination. Configuration is handled via SPI port or parallel pin-strapping (PAR/SER, CS, SCK), supporting dynamic mode switching between 12-/14-/16-bit serialization formats.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit with no missing codes over temperature - guarantees monotonicity and full code coverage in precision measurement systems. |
| Sampling Rate | 40Msps - matches mid-tier SDR and medical imaging data acquisition throughput requirements without oversampling penalty. |
| SNR / SFDR | 71dB / 90dB at 70MHz input - enables high-fidelity digitization of narrowband carriers in crowded spectral environments. |
| Aperture Jitter | 0.15psRMS - limits sampling uncertainty to <0.01 LSB at 140MHz, critical for Nyquist-compliant IF sampling. |
| INL / DNL | ±0.3LSB / ±0.1LSB typical - ensures accurate amplitude linearity for calibration-critical applications like portable ultrasound beamforming. |
| Power Dissipation | 198mW total (49.5mW/channel) at 40Msps - supports thermally constrained multichannel PCB layouts in compact base station modules. |
| Analog Supply | Single 1.8V (1.7V–1.9V) - simplifies power delivery and reduces noise coupling versus dual-supply ADCs. |
Pinout & Package
52-pin (7mm × 8mm) plastic QFN package with exposed thermal pad (Pin 53 = GND). Requires soldering of exposed pad to PCB ground plane for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN1+ / AIN1– AIN2+ / AIN2– AIN3+ / AIN3– AIN4+ / AIN4– |
Differential analog inputs (Ch. 1–4) | Accept 1VP-P to 2VP-P differential signals; common-mode bias provided by VCM12/VCM34 pins for matched channel pairing. |
| ENC+ / ENC– | Differential encode clock input | Supports 0.2V min differential swing; internal duty cycle stabilizer maintains performance across 2ns–100ns pulse widths. |
| OUT1A+/– to OUT4B+/– | Serial LVDS data outputs | Two pairs per channel (A/B) for 2-lane mode; configurable for 12-/14-/16-bit serialization with embedded frame/DCO timing. |
| FR+, FR– / DCO+, DCO– | LVDS frame and data clock outputs | Provide synchronous timing references for FPGA capture logic; tFRAME and tDATA delays are deterministic and ratio-based to tSER. |
| PAR/SER, CS, SCK, SDI | Parallel/SPI configuration interface | Enable pin-strapped mode selection (e.g., 1-lane vs 2-lane) or register-based reconfiguration without external controller. |
Key Features
| Feature | Design Value |
|---|---|
| Quad-channel simultaneous sampling | Eliminates inter-channel skew <1ps, enabling coherent beamforming and MIMO antenna array digitization. |
| Ultralow 0.15psRMS jitter | Enables direct undersampling of 140MHz IF signals with <0.5dB SNR degradation versus baseband sampling. |
| Programmable LVDS output drive | 1.75mA/3.5mA modes and on-chip 100Ω termination reduce PCB routing complexity and improve signal integrity on long traces. |
| Internal clock duty cycle stabilizer | Allows use of asymmetric clocks (e.g., from PLLs with 30%–70% duty cycle) without SNR or SFDR penalty at full 40Msps rate. |
| Industrial temperature grade (–40°C to +85°C) | Validated operation across extended ambient conditions required for outdoor small-cell base stations and field-deployed test equipment. |
Applications
| Cellular Base Stations | Software Defined Radios |
|---|---|
|
Use Scenario: Digitizing multiple 20MHz LTE carriers in remote radio heads using IF sampling at 70–140MHz. IC Role / Device Role / Timing Role: Quad-channel synchronized ADC capturing I/Q data streams with sub-picosecond inter-channel alignment. Use Value: 90dB SFDR prevents adjacent-channel interference masking weak signals; 71dB SNR supports 16-QAM demodulation at –3dB EVM. |
Use Scenario: Real-time spectrum analysis and adaptive waveform generation in field-programmable SDR platforms. IC Role / Device Role / Timing Role: High-fidelity digitizer feeding FPGA-based FFT engines and digital downconverters. Use Value: 800MHz full-power bandwidth allows direct sampling of L-band (1–2GHz) signals with minimal anti-alias filtering. |
| Portable Medical Imaging | Multichannel Data Acquisition |
|
Use Scenario: Beamformed ultrasound receive path with 32–64 parallel analog channels compressed into four high-speed ADC lanes. IC Role / Device Role / Timing Role: Time-interleaved digitizer providing synchronized samples across transducer elements for phase-coherent processing. Use Value: ±0.3LSB INL ensures accurate amplitude mapping of echo returns; low 0.3LSBRMS transition noise preserves tissue contrast resolution. |
Use Scenario: High-channel-count vibration monitoring in industrial predictive maintenance systems with simultaneous analog sensor inputs. IC Role / Device Role / Timing Role: Precision acquisition engine converting accelerometer, strain gauge, and temperature sensor outputs with correlated timing. Use Value: Shutdown and nap modes reduce system idle power to 1mW/75mW, extending battery life in wireless sensor nodes. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar quad-channel, 12-bit ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9257BCPZ-40 | 40Msps, 14-bit, 1.8V supply, but uses CMOS parallel outputs instead of serial LVDS - requires 48 more data lines and higher IO power. | Preferred where FPGA has abundant parallel I/O and lower latency is prioritized over board space. | Select AD9257BCPZ-40 only if LVDS serialization is unnecessary and system layout can accommodate wider bus routing. |
| LTC2170IUKG-12#PBF | Same pinout and feature set, but rated for 25Msps maximum sampling rate and lower power (160mW total) - drop-in replacement for cost- and power-sensitive designs. | Ideal for portable instrumentation where 25Msps bandwidth suffices and thermal headroom is limited. | Choose LTC2170IUKG-12#PBF when full 40Msps throughput is not required and BOM cost reduction is critical. |
Compared with AD9257BCPZ-40, LTC2171IUKG-12#PBF saves >70% PCB area via serial LVDS and reduces FPGA pin count by 64; compared with LTC2170IUKG-12#PBF, it provides +15Msps headroom for future firmware upgrades without hardware change.
Availability
LTC2171IUKG-12#PBF 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 multi-year production cycles.
Supply support for LTC2171IUKG-12#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 digital signal processing technologies, serving aerospace, industrial, automotive, and communications markets.
The LTC2171IUKG-12#PBF belongs to Linear's high-speed, low-power ADC family designed specifically for demanding communications and instrumentation applications requiring simultaneous multi-channel sampling with exceptional dynamic range.
FAQ
What is the maximum sampling frequency supported by the LTC2171IUKG-12#PBF?
The LTC2171IUKG-12#PBF is rated for a maximum sampling frequency of 40Msps, as confirmed in the "Timing Characteristics" table of the official datasheet. This speed grade distinguishes it from the LTC2172-12 (65Msps) and LTC2170-12 (25Msps) variants within the same pin-compatible family. Operation above 40Msps is not guaranteed and may degrade SNR/SFDR performance.
Does the LTC2171IUKG-12#PBF support both 1-lane and 2-lane LVDS output modes?
Yes, the LTC2171IUKG-12#PBF supports both 1-lane and 2-lane serial LVDS output configurations. Mode selection is controlled via the PAR/SER pin (Pin 32) and CS pin (Pin 19), allowing hardware-strapped or SPI-configurable operation. In 2-lane mode, each channel outputs two bits per clock cycle; in 1-lane mode, it outputs one bit per cycle - reducing FPGA I/O count by half.
What is the operating temperature range for the LTC2171IUKG-12#PBF?
The LTC2171IUKG-12#PBF is specified for an industrial operating temperature range of –40°C to +85°C, indicated by the "I" suffix in the part number. This is validated across all AC and DC specifications including SNR, SFDR, INL, and power consumption, making it suitable for outdoor telecom equipment and ruggedized test instruments.
Can the LTC2171IUKG-12#PBF accept single-ended encode clock inputs?
Yes, the LTC2171IUKG-12#PBF supports single-ended encode clock operation by tying ENC– (Pin 18) to ground and driving ENC+ (Pin 17) with TTL, CMOS, or LVDS logic levels. The datasheet specifies VIH = 1.2V and VIL = 0.6V at VDD = 1.8V, and input resistance is 30kΩ in this mode - enabling direct interfacing with FPGA clock outputs without external level-shifting.
How does the internal clock duty cycle stabilizer benefit system design with the LTC2171IUKG-12#PBF?
The internal clock duty cycle stabilizer in the LTC2171IUKG-12#PBF allows reliable operation with encode clock duty cycles ranging from 2ns to 100ns (i.e., 2% to 98%), eliminating the need for external duty-cycle correction circuits. This simplifies clock tree design when using PLLs or dividers that inherently produce asymmetric waveforms, while maintaining full 40Msps performance and 71dB SNR.
LTC2171IUKG-12#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 52-WFQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 40M
- Number of Inputs:
- 4
- Input Type:
- Differential
- Data Interface:
- LVDS - Serial
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 4
- Architecture:
- Pipelined
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 1.7V ~ 1.9V
- Voltage - Supply, Digital:
- 1.7V ~ 1.9V
- Features:
- Simultaneous Sampling
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 52-QFN (7x8)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2171IUKG-12#PBF FAQ
1.How can I place an order for LTC2171IUKG-12#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2171IUKG-12#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 LTC2171IUKG-12#PBF reliable?
The price and inventory of LTC2171IUKG-12#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2171IUKG-12#PBF is usually 5 days.
3.What payment methods are accepted for LTC2171IUKG-12#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2171IUKG-12#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2171IUKG-12#PBF?
LTC2171IUKG-12#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2171IUKG-12#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 LTC2171IUKG-12#PBF?
For technical support, including LTC2171IUKG-12#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2171IUKG-12#PBF requirements.
6.How does Aetrix verify that LTC2171IUKG-12#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2171IUKG-12#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 LTC2171IUKG-12#PBF meets industry standards.
7.What is the process for return or replacement of LTC2171IUKG-12#PBF?
All LTC2171IUKG-12#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2171IUKG-12#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 LTC2171IUKG-12#PBF part is unused and in its original packaging.
Return procedure for LTC2171IUKG-12#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC2171IUKG-12#PBF Tags
-
ADC081C021CIMKX/NOPB
Texas Instruments
-
MCP3021A5T-E/OT
Microchip Technology
-
TLA2024IRUGR
Texas Instruments
-
MCP3221A5T-E/OT
Microchip Technology
-
MCP3221A5T-I/OT
Microchip Technology
-
MCP3221A4T-E/OT
Microchip Technology
-
MCP3221A6T-E/OT
Microchip Technology
-
MCP3221A0T-E/OT
Microchip Technology
-
MCP3221A1T-E/OT
Microchip Technology
-
ADC121S021CIMFX/NOPB
Texas Instruments
-
MCP3001-I/MS
Microchip Technology
-
MCP3001-I/SN
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
