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Analog Devices Inc. LTC2270CUP#PBF
- Part No.:
- LTC2270CUP#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 64-WFQFN Exposed Pad
- Datasheet:
-
LTC2270CUP#PBF.pdf
- Description:
- IC ADC 16BIT PIPELINED 64QFN
- Quantity:
- Payment:
- Shipping:
Inventory:446
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Product details
Overview
LTC2270CUP#PBF from Analog Devices (formerly Linear Technology) is a dual-channel, simultaneous-sampling 16-bit analog-to-digital converter optimized for high-dynamic-range signal digitization in demanding RF and instrumentation systems. It delivers 84.1dB SNR, 99dB SFDR, ±2.3LSB INL (max), 200MHz full-power bandwidth, and operates from a single 1.8V supply with total power consumption of 160mW at 20Msps - enabling portable medical imaging and software-defined radio front-ends.
For engineers reviewing the LTC2270CUP#PBF datasheet, LTC2270CUP#PBF pinout, LTC2270CUP#PBF application, or LTC2270CUP#PBF equivalent, key selection considerations include its dual-channel simultaneous sampling architecture, selectable CMOS/DDR-CMOS/DDR-LVDS output interfaces, 1.0–2.1VP-P input range configurability via SENSE pin, SPI-based mode control, and low-noise 46μVRMS input-referred noise performance.
Technical Context
The LTC2270CUP#PBF integrates two independent 16-bit ADC cores sharing a common sample-and-hold with 200MHz bandwidth and <100fsRMS jitter. Its internal reference provides 1.25V ±25ppm/°C drift, while external reference mode supports 0.625V–1.3V input via SENSE pin to scale input range to ±0.84×VSENSE.
Digital interface flexibility includes full-rate CMOS (32 data lines), DDR-CMOS (16 lines), or DDR-LVDS (16 differential pairs), all with programmable CLKOUT phase delay and optional on-chip 100Ω LVDS termination. Clock inputs accept differential (LVDS/PECL) or single-ended (TTL/CMOS) signals with duty cycle stabilizer enabled via CS pin.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit with no missing codes over temperature - guarantees monotonicity and full code coverage in precision measurement. |
| Sampling Rate | 20Msps maximum - supports Nyquist-limited baseband capture up to 10MHz or IF sampling in SDR applications. |
| SNR / SFDR | 84.1dB SNR (1.4MHz input), 99dB SFDR (5MHz input) - enables >13.7 effective bits for high-fidelity signal reconstruction. |
| INL / DNL | ±2.3LSB max INL, ±0.8LSB max DNL - ensures accurate amplitude fidelity critical for spectral analysis and calibration. |
| Power Consumption | 160mW total at 20Msps (80mW/channel) - allows thermal-constrained portable designs without forced cooling. |
| Analog Supply | Single 1.8V (1.7–1.9V) - simplifies power architecture and reduces BOM count versus multi-rail ADCs. |
| Input Bandwidth | 200MHz full-power bandwidth - supports wideband IF sampling and fast transient capture in radar or ultrasound. |
Pinout & Package
64-lead (9mm × 9mm) plastic QFN package with exposed thermal pad (Pin 65 = GND). Requires soldering of exposed pad to PCB ground plane for thermal and electrical integrity.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD (Pins 1,16,17,64) | Analog power supply | 1.7–1.9V rail; bypass each group with 0.1μF ceramic capacitor to GND for noise suppression. |
| AIN1+/AIN1–, AIN2+/AIN2– | Differential analog inputs | High-Z inputs requiring matched 50Ω or transformer-coupled drive; common-mode bias via VCM1/VCM2 pins. |
| ENC+/ENC– | Encode clock inputs | Differential or single-ended (ENC– tied to GND); supports PECL/LVDS/TTL/CMOS; duty cycle stabilizer enabled via CS. |
| PAR/SER | Programming mode select | Ground = serial SPI mode (CS/SCK/SDI/SDO active); VDD = parallel mode (CS/SCK/SDI control simplified functions). |
| D1_0–D1_15 / D2_0–D2_15 | Full-rate CMOS outputs | 16-bit parallel outputs per channel; MSB-aligned; OVDD-programmable swing (1.2–1.8V) for logic-level compatibility. |
| CLKOUT+/CLKOUT– | Data output clock | Source-synchronous clock aligned to data edges; phase delay programmable via SPI for timing margin optimization. |
| SENSE | Reference configuration | Directly sets input range: VDD → ±1.05V, GND → ±0.525V, 0.625–1.3V → ±0.84×VSENSE - enables dynamic range tuning. |
Key Features
| Feature | Design Value |
|---|---|
| Simultaneous dual-channel sampling | Eliminates inter-channel skew for coherent I/Q or differential measurements - essential for phase-sensitive applications like beamforming. |
| Selectably programmable output interface | Hardware-configurable CMOS/DDR-CMOS/DDR-LVDS modes reduce PCB layer count and EMI versus fixed-output ADCs. |
| Integrated clock duty cycle stabilizer | Enables full-speed operation with asymmetric clocks (e.g., from FPGA PLLs), removing need for external clock conditioning circuitry. |
| SPI-configurable operating modes | Runtime reconfiguration of input range, output format, power modes (Nap/Sleep), and CLKOUT phase - supports adaptive system architectures. |
| Low-noise 46μVRMS input-referred noise | Supports high-resolution sensor interfacing (e.g., ultrasound transducers) without external pre-amplification degradation. |
Applications
| Portable Medical Ultrasound | Software-Defined Radio (SDR) |
|---|---|
Use Scenario: Digitizing echo return signals from piezoelectric transducers in handheld ultrasound probes. IC Role / Device Role / Timing Role: Dual-channel simultaneous ADC capturing I/Q baseband signals with sub-100fs jitter to preserve phase coherence across scan lines. Use Value: 84.1dB SNR enables detection of low-amplitude tissue boundaries; 160mW power allows battery operation for >4 hours per charge. |
Use Scenario: Wideband IF sampling in cognitive radio front-ends supporting multiple modulation standards (LTE, Wi-Fi, Bluetooth). IC Role / Device Role / Timing Role: High-SFDR digitizer capturing 20MHz instantaneous bandwidth with minimal harmonic distortion for real-time spectrum analysis. Use Value: 99dB SFDR prevents adjacent-channel interference masking; DDR-LVDS outputs suppress digital switching noise near sensitive RF sections. |
| Multi-Channel Data Acquisition | Low-Power Instrumentation |
Use Scenario: Modular DAQ systems acquiring synchronized voltage/current waveforms from industrial sensors (e.g., vibration, temperature arrays). IC Role / Device Role / Timing Role: Simultaneous sampling ADC providing time-aligned data across two channels for cross-channel correlation and FFT-based diagnostics. Use Value: ±2.3LSB INL ensures measurement accuracy across 0–70°C operating range; SPI configuration enables field calibration updates. |
Use Scenario: Battery-powered test equipment (e.g., portable oscilloscopes, spectrum analyzers) requiring high resolution without thermal throttling. IC Role / Device Role / Timing Role: Low-power ADC core with Nap mode (12mW) and Sleep mode (0.5mW) enabling rapid wake-on-event acquisition. Use Value: 160mW full-speed operation eliminates heatsink requirement; single 1.8V supply reduces DC/DC conversion losses. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-channel, 16-bit, 20Msps ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC2180CUP#PBF | 16-bit, 25Msps, 78mW total - higher speed but lower SNR (80.5dB) and SFDR (92dB); pin-compatible with LTC2270CUP#PBF. | Better suited for bandwidth-critical applications where 5Msps headroom justifies 7.5dB SNR trade-off. | Choose when sampling rate >20Msps is required and system noise floor permits lower dynamic range. |
| AD9268BCPZ-20 | 16-bit, 20Msps, 1.8V supply, 145mW - similar SNR (83.5dB) but no integrated reference; requires external REF buffer and clock conditioner. | Requires additional support components for reference and clock path, increasing layout complexity and BOM cost. | Prefer when existing system already implements high-precision external reference and clock distribution infrastructure. |
Compared with LTC2180CUP#PBF and AD9268BCPZ-20, the LTC2270CUP#PBF offers superior SNR/SFDR at 20Msps with integrated reference and clock stabilization - reducing component count and improving phase coherence in portable, space-constrained designs.
Availability
LTC2270CUP#PBF is available at Aetrix Electronics and suitable for portable medical imaging, software-defined radio front-ends, and multi-channel data acquisition systems requiring stable component supply with guaranteed long-term availability.
Supply support for LTC2270CUP#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 for precision measurement and communication systems.
The LTC2270CUP#PBF belongs to Linear's high-speed precision ADC product line, designed specifically for applications demanding simultaneous dual-channel sampling, ultra-low noise, and flexible digital interfacing in resource-constrained environments.
FAQ
What is the operating temperature range for the LTC2270CUP#PBF?
The LTC2270CUP#PBF is rated for 0°C to 70°C ambient operation, as indicated by the "C" grade suffix in the part number. This commercial-grade specification ensures stability in non-industrial environments such as portable test equipment and consumer-facing medical devices. The device maintains full performance compliance - including 84.1dB SNR and ±2.3LSB INL - across this entire range without derating.
Does the LTC2270CUP#PBF support external reference operation?
Yes, the LTC2270CUP#PBF supports external reference operation via the SENSE pin. Applying a voltage between 0.625V and 1.3V to SENSE configures the input range to ±0.84×VSENSE, enabling precise scaling for sensor-specific full-scale requirements. The internal 1.25V reference remains available when SENSE is tied to VDD (±1.05V range) or GND (±0.525V range).
How does the DDR-LVDS output mode reduce system EMI compared to CMOS outputs?
The LTC2270CUP#PBF's DDR-LVDS mode cuts digital EMI by combining differential signaling (common-mode noise rejection) with current-mode drivers (reduced edge dv/dt) and halved pin count (16 differential pairs vs. 32 single-ended lines). This lowers radiated emissions by >20dB in typical PCB layouts - critical for co-located RF/analog sections in SDR and ultrasound platforms.
Can the LTC2270CUP#PBF be configured for single-channel operation to reduce power?
No - the LTC2270CUP#PBF is inherently dual-channel and does not support disabling one ADC core. However, it offers Nap mode (12mW) and Sleep mode (0.5mW) accessible via SPI, allowing rapid entry/exit from low-power states during idle periods. Total power remains 160mW only during active 20Msps sampling on both channels.
What is the purpose of the PAR/SER pin on the LTC2270CUP#PBF?
The PAR/SER pin selects between serial SPI programming (PAR/SER = GND) and parallel pin-strapped configuration (PAR/SER = VDD). In serial mode, CS/SCK/SDI/SDO form a 4-wire SPI interface for full register control. In parallel mode, CS/SCK/SDI directly configure basic functions (clock stabilizer, output format, power mode) without firmware overhead - simplifying boot-time initialization.
LTC2270CUP#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 64-WFQFN Exposed Pad
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 20M
- Number of Inputs:
- 2
- Input Type:
- Differential
- Data Interface:
- LVDS - Parallel, 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:
- 1.7V ~ 1.9V
- Voltage - Supply, Digital:
- 1.7V ~ 1.9V
- Features:
- Simultaneous Sampling
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 64-QFN (9x9)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2270CUP#PBF FAQ
1.How can I place an order for LTC2270CUP#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2270CUP#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 LTC2270CUP#PBF reliable?
The price and inventory of LTC2270CUP#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2270CUP#PBF is usually 5 days.
3.What payment methods are accepted for LTC2270CUP#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2270CUP#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2270CUP#PBF?
LTC2270CUP#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2270CUP#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 LTC2270CUP#PBF?
For technical support, including LTC2270CUP#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2270CUP#PBF requirements.
6.How does Aetrix verify that LTC2270CUP#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2270CUP#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 LTC2270CUP#PBF meets industry standards.
7.What is the process for return or replacement of LTC2270CUP#PBF?
All LTC2270CUP#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2270CUP#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 LTC2270CUP#PBF part is unused and in its original packaging.
Return procedure for LTC2270CUP#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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