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Analog Devices Inc. LTC2107IUK#PBF
- Part No.:
- LTC2107IUK#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 48-WFQFN Exposed Pad
- Datasheet:
-
LTC2107IUK#PBF.pdf
- Description:
- IC ADC 16BIT PIPELINED 48QFN
- Quantity:
- Payment:
- Shipping:
Inventory:105
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Product details
Overview
LTC2107IUK#PBF from Analog Devices (formerly Linear Technology) is a 16-bit, 210Msps high-performance analog-to-digital converter optimized for direct RF sampling in demanding receiver front-ends. It delivers 80dBFS SNR, 98dBFS SFDR at 30.3MHz input, and 45fsRMS aperture jitter-enabling high-fidelity digitization of IF signals up to 500MHz in software-defined radios and multi-channel GSM base stations.
For engineers reviewing the LTC2107IUK#PBF datasheet, LTC2107IUK#PBF pinout, LTC2107IUK#PBF application, or LTC2107IUK#PBF equivalent, key selection criteria include its dual-mode LVDS/CMOS digital outputs, programmable gain amplifier (PGA), internal dither capability, clock duty cycle stabilizer, and operation across –40°C to +85°C industrial temperature range.
Technical Context
The LTC2107IUK#PBF employs a pipelined ADC architecture with integrated sample-and-hold, correction logic, and DDR LVDS or full-rate CMOS output drivers. Its analog front-end supports differential input ranges of 2.4VP-P (PGA = 0) or 1.6VP-P (PGA = 1), with VCM output at 1.2V for precise common-mode biasing.
Configuration is handled via a 3-wire SPI interface or parallel control pins (PAR/SER, CS, SCK, SDI), enabling runtime selection of output mode, PGA gain, dither, and data randomization. The device includes a clock duty cycle stabilizer and supports shutdown mode with 6.4mW power consumption.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit with no missing codes-guarantees monotonic transfer function for precision measurement systems. |
| Sample Rate | 210Msps maximum-supports Nyquist sampling of signals up to 105MHz bandwidth or undersampling of IFs up to 500MHz. |
| SNR | 80dBFS at 30.3MHz input-enables high dynamic range signal capture in spectral analysis and instrumentation. |
| SFDR | 98dBFS at 30.3MHz input (dither off)-minimizes spurious content critical for multi-tone cellular base station receivers. |
| Aperture Jitter | 45fsRMS-directly limits SNR degradation at high input frequencies; enables clean digitization of 500MHz IF signals. |
| Power Dissipation | 1280mW in LVDS 1.75mA mode-optimized for thermal management in dense RF front-end PCB layouts. |
| Operating Temp | –40°C to +85°C-qualified for industrial and outdoor wireless infrastructure deployments. |
Pinout & Package
48-lead (7mm × 7mm) plastic QFN package with exposed pad (Pin 49 = GND). Requires soldering exposed pad to PCB ground plane for thermal and electrical performance.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN+, AIN– | Differential analog input | Accepts 2.4VP-P (PGA=0) or 1.6VP-P (PGA=1) differential signal; requires matched 50Ω termination for RF applications. |
| ENC+, ENC– | Differential encode clock input | Starts conversion on rising/falling edges; supports external clock conditioning and duty cycle stabilization. |
| VCM | Common-mode bias output | Provides stable 1.2V reference for input driver biasing; must be bypassed with 2.2µF capacitor. |
| SHDN | Shutdown control | Active-high logic input; asserts low-power state (6.4mW) and places digital outputs in high-impedance. |
| PAR/SER, CS, SCK, SDI | Mode configuration interface | Selects serial (SPI) or parallel programming; configures LVDS/CMOS output mode, PGA gain, dither, and randomization. |
| D0_1+ / D0_1– to D14_15+ / D14_15– | DDR LVDS data outputs | Transmit 16-bit data at double rate using 8 differential pairs; support internal 100Ω termination and 3.5mA/1.75mA drive modes. |
| CLKOUT+, CLKOUT– | LVDS output clock | Source-synchronous clock aligned to DDR data edges; phase delay programmable via SPI registers. |
| OF+, OF– | Overflow/underflow flag | Differential LVDS output indicating saturation event; used for AGC loop feedback in receiver systems. |
Key Features
| Feature | Design Value |
|---|---|
| Programmable Gain Amplifier (PGA) | Configurable 1× (2.4VP-P) or 1.5× (1.6VP-P) front-end gain-optimizes dynamic range for varying signal levels without external amplification. |
| Internal Dither | Reduces harmonic distortion and improves SFDR by >20dB at –25dBFS input-critical for low-level signal detection in spectral analysis. |
| Digital Output Randomization | Minimizes deterministic EMI from periodic data patterns-reduces radiated emissions in EMC-sensitive wireless base stations. |
| Clock Duty Cycle Stabilizer | Compensates for asymmetric encode clock waveforms-maintains timing margin and reduces aperture uncertainty in noisy environments. |
| 7-cycle pipeline latency | Predictable, fixed delay from encode edge to valid output data-enables deterministic timing closure in FPGA-based digital downconverters. |
Applications
| Software Defined Radios | Military Radio and RADAR |
|---|---|
Use Scenario: Wideband IF digitization in reconfigurable transceivers supporting multiple waveforms (e.g., LTE, WCDMA, TD-SCDMA). IC Role / Device Role / Timing Role: Primary ADC capturing 100MHz+ instantaneous bandwidth with minimal SNR degradation at 300MHz IF. Use Value: 45fsRMS jitter and 98dBFS SFDR enable simultaneous reception of closely spaced channels without reciprocal mixing. | Use Scenario: High-speed pulse-Doppler radar digitization requiring low-latency, high-SFDR acquisition of fast-rising return signals. IC Role / Device Role / Timing Role: Front-end ADC in digital beamforming arrays, synchronized across multiple channels via shared encode clock. Use Value: 7-cycle deterministic latency and LVDS DDR outputs simplify time-aligned multi-channel data capture in FPGAs. |
| Cellular Base Stations | ATE and Instrumentation |
Use Scenario: Multi-carrier GSM/UMTS/LTE receiver in macrocell BTS with >20MHz composite bandwidth and stringent ACLR requirements. IC Role / Device Role / Timing Role: Digitizer for zero-IF or low-IF architectures with integrated PGA to handle variable antenna signal levels. Use Value: Programmable dither and randomization suppress spurs below –120dBc, meeting 3GPP ACLR mask compliance. | Use Scenario: High-accuracy signal analyzer or arbitrary waveform generator calibration path requiring traceable amplitude linearity. IC Role / Device Role / Timing Role: Reference-grade digitizer in metrology-grade test equipment with <±1.6LSB INL and <±0.4LSB DNL. Use Value: 16-bit no-missing-codes resolution and 80dBFS SNR support sub-0.1% THD+N measurements at 10MHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9643BCPZ-250 | 14-bit, 250Msps; lower resolution but higher sample rate; JESD204B serial interface instead of LVDS/CMOS. | Better suited for FPGA-based systems with JESD204B lane aggregation; lacks PGA and internal dither. | Select when system bandwidth >125MHz and FPGA supports JESD204B; avoid if analog front-end gain control or spur suppression is required. |
| ADS54J60IRCP | 16-bit, 500Msps; higher speed but 1.5× power (1950mW); uses 0.9V/1.8V dual supplies vs. LTC2107's 2.5V/1.8V. | Targeted at wideband electronic warfare receivers; requires more complex power sequencing and layout. | Choose for >250MHz instantaneous bandwidth; only if thermal design accommodates higher dissipation and supply rails are available. |
Compared with AD9643BCPZ-250 and ADS54J60IRCP, the LTC2107IUK#PBF provides superior SFDR at mid-band frequencies (98dBFS @30MHz) and integrated analog features (PGA, dither, VCM) ideal for cost-sensitive, thermally constrained RF front-ends where 210Msps suffices.
Availability
LTC2107IUK#PBF is available at Aetrix Electronics and suitable for software-defined radios, military communications systems, and cellular base station designs requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC2107IUK#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 RF ICs, serving precision instrumentation, communications, and industrial markets.
The LTC2107 product line was designed specifically for high-linearity, low-jitter direct RF sampling in demanding receiver applications-including SDR, radar, and multi-carrier base stations-where traditional IF-staging adds complexity and loss.
FAQ
What is the guaranteed operating temperature range for the LTC2107IUK#PBF?
The LTC2107IUK#PBF is specified for continuous operation from –40°C to +85°C, making it suitable for industrial and outdoor wireless infrastructure deployments. This grade is confirmed in the Absolute Maximum Ratings table and Converter Characteristics section of the official datasheet, where all "l"-denoted parameters apply across this full range.
Does the LTC2107IUK#PBF support both LVDS and CMOS digital output interfaces?
Yes, the LTC2107IUK#PBF supports two configurable output modes: double-data-rate LVDS (with programmable 1.75mA or 3.5mA current) and full-rate CMOS. Mode selection is controlled by the PAR/SER and CS pins; LVDS mode is recommended for 210Msps operation, while CMOS is limited to ≤100Msps per the datasheet timing specifications.
How does the internal PGA affect the analog input range of the LTC2107IUK#PBF?
The LTC2107IUK#PBF's programmable gain amplifier offers two settings: PGA = 0 yields a 2.4VP-P differential input range, and PGA = 1 yields 1.6VP-P. This is achieved by adjusting front-end transconductance-not external scaling-so full-scale codes map directly to these ranges without recalibration, as verified in the Analog Input section of the datasheet.
Can the LTC2107IUK#PBF operate with an external voltage reference?
Yes, the LTC2107IUK#PBF supports external reference mode via the SENSE pin. Applying 1.25V ±25mV to SENSE selects the external reference; grounding or tying SENSE to VDD selects the internal 1.25V reference. Gain error in external mode is ±1.5%FS, versus ±0.85%FS with internal reference, as specified in the Converter Characteristics table.
What is the purpose of the clock duty cycle stabilizer in the LTC2107IUK#PBF?
The clock duty cycle stabilizer in the LTC2107IUK#PBF corrects asymmetry in the ENC+/ENC– differential clock input, reducing aperture uncertainty caused by non-50% duty cycles. This feature maintains timing margin and SNR performance even when driven by imperfect clocks-a key advantage in noisy RF environments where clock conditioning circuitry may be omitted.
LTC2107IUK#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 48-WFQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 210M
- 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:
- Internal
- Voltage - Supply, Analog:
- 2.375V ~ 2.625V
- Voltage - Supply, Digital:
- 2.375V ~ 2.625V
- Features:
- PGA
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 48-QFN (7x7)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2107IUK#PBF FAQ
1.How can I place an order for LTC2107IUK#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2107IUK#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 LTC2107IUK#PBF reliable?
The price and inventory of LTC2107IUK#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2107IUK#PBF is usually 5 days.
3.What payment methods are accepted for LTC2107IUK#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2107IUK#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2107IUK#PBF?
LTC2107IUK#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2107IUK#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 LTC2107IUK#PBF?
For technical support, including LTC2107IUK#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2107IUK#PBF requirements.
6.How does Aetrix verify that LTC2107IUK#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2107IUK#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 LTC2107IUK#PBF meets industry standards.
7.What is the process for return or replacement of LTC2107IUK#PBF?
All LTC2107IUK#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2107IUK#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 LTC2107IUK#PBF part is unused and in its original packaging.
Return procedure for LTC2107IUK#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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