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Analog Devices Inc. LTC2270IUP#PBF
- Part No.:
- LTC2270IUP#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 64-WFQFN Exposed Pad
- Datasheet:
-
LTC2270IUP#PBF.pdf
- Description:
- IC ADC 16BIT PIPELINED 64QFN
- Quantity:
- Payment:
- Shipping:
Inventory:362
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Product details
Overview
LTC2270IUP#PBF from Analog Devices (acquired 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 max INL, 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 LTC2270IUP#PBF datasheet, LTC2270IUP#PBF pinout, LTC2270IUP#PBF application, or LTC2270IUP#PBF equivalent, key selection criteria include dual-channel simultaneity, selectable CMOS/DDR-CMOS/DDR-LVDS output modes, 1.8V-only operation, 20Msps sampling rate, and industrial temperature range (–40°C to +85°C) support.
Technical Context
The LTC2270IUP#PBF employs two independent 16-bit SAR ADC cores with shared clock and reference architecture, ensuring precise channel-to-channel timing alignment and gain/offset matching (±0.06%FS gain, ±1.5mV offset). Its sample-and-hold supports differential analog inputs up to 2.1VP-P with 200MHz bandwidth and <100fsRMS jitter in differential encode mode.
Digital interface flexibility includes SPI-configurable output formats (full-rate CMOS, DDR-CMOS, or DDR-LVDS), programmable clock duty cycle stabilization, and three operating modes: active (160mW), nap (12mW), and sleep (0.5mW). Output voltage swing is configurable via OVDD (1.2V–1.8V for CMOS) or current mode (1.75mA/3.5mA for LVDS).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit, no missing codes over temperature - guarantees monotonicity and full dynamic range utilization 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 and 99dB SFDR at 5MHz input - enables >13.7 effective bits and clean spectral purity for low-distortion signal analysis. |
| Analog Input Range | Selectable 1VP-P to 2.1VP-P differential - allows optimization for signal amplitude while maintaining 84dB+ SNR across range. |
| Power Consumption | 160mW total at 20Msps (80mW per channel) - enables battery-powered or thermally constrained multi-channel DAQ systems. |
| Supply Voltage | Single 1.8V analog (VDD) and digital (OVDD) supply - simplifies power delivery and eliminates level-shifting in 1.8V FPGA/ASIC interfaces. |
| Operating Temperature | –40°C to +85°C - qualified for industrial and embedded medical equipment without derating. |
Pinout & Package
64-lead (9mm × 9mm) plastic QFN package with exposed thermal pad (Pin 65 = GND, must be soldered). Pinout supports three mutually exclusive digital output configurations: full-rate CMOS (64 pins active), DDR-CMOS (32 data pins + CLKOUT± + OF), or DDR-LVDS (32 differential pairs + CLKOUT± + OF±).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD (Pins 1,16,17,64) | Analog power supply | 1.7–1.9V supply for ADC core and reference; requires local 0.1μF ceramic bypassing. |
| AIN1+/AIN1–, AIN2+/AIN2– | Differential analog inputs | Two fully independent 200MHz-bandwidth input channels; require matched PCB routing and common-mode bias (VCM1/VCM2). |
| ENC+/ENC– | Encode clock input | Differential or single-ended sampling trigger; supports PECL/LVDS/TTL/CMOS; duty cycle stabilizer enabled via CS. |
| D1_0–D1_15 / D2_0–D2_15 | Full-rate CMOS outputs | 16-bit parallel outputs per channel (MSB-first), CMOS-level (0–OVDD), with separate OF1/OF2 overflow flags. |
| CLKOUT+/CLKOUT– | Data strobe clock | Source-synchronous output clock; phase programmable to align with data setup/hold windows in FPGA receivers. |
| PAR/SER | Programming mode select | Hardwired to GND for SPI configuration (CS/SCK/SDI/SDO) or VDD for parallel control (CS/SCK/SDI direct logic). |
Key Features
| Feature | Design Value |
|---|---|
| Simultaneous dual-channel sampling | Guarantees deterministic inter-channel phase alignment (<10ps skew) for coherent I/Q or multi-sensor acquisition. |
| Three output interface options | Reduces pin count by 50% in DDR modes; LVDS option suppresses digital switching noise coupling into analog sections. |
| Programmable input range & reference | SENSE pin selects ±0.525V, ±1.05V, or external 0.625–1.3V reference - enables optimal dynamic range for varying sensor outputs. |
| Low-power operational modes | Nap (12mW) and Sleep (0.5mW) states allow rapid wake-up (<1μs) for duty-cycled sensing without full re-initialization. |
| Integrated clock duty cycle stabilizer | Compensates for asymmetric encode clocks - maintains full AC performance even with 30%–70% duty cycle inputs. |
Applications
| Portable Medical Ultrasound | Software-Defined Radio (SDR) |
|---|---|
Use Scenario: Real-time beamforming in handheld ultrasound probes requiring compact, low-power, high-fidelity digitization of multiple transducer channels. IC Role / Device Role / Timing Role: Dual-channel ADC capturing synchronized I/Q signals from analog beamformer outputs at 20Msps with <100fs jitter. Use Value: 84.1dB SNR preserves tissue contrast resolution; 160mW total power enables battery operation for >4 hours per charge. | Use Scenario: Direct-conversion receiver front-end in wideband cognitive radio platforms supporting multi-band, multi-standard operation. IC Role / Device Role / Timing Role: Simultaneous sampling of RF quadrature paths with matched gain/offset (±0.06%FS) for accurate complex baseband reconstruction. Use Value: 99dB SFDR rejects adjacent-channel interference; DDR-LVDS outputs minimize EMI in dense RF subsystems. |
| Industrial Multi-Channel DAQ | Low-Noise Instrumentation |
Use Scenario: High-precision vibration monitoring system acquiring synchronized analog signals from 8+ piezoelectric sensors across rotating machinery. IC Role / Device Role / Timing Role: Two LTC2270IUP#PBFs per module provide four simultaneously sampled 16-bit channels with hardware-triggered start. Use Value: ±2.3LSB INL ensures calibrated amplitude accuracy; industrial temp range (–40°C to +85°C) supports uncooled cabinet deployment. | Use Scenario: Portable spectrum analyzer front-end digitizing low-level RF signals in field service and lab calibration environments. IC Role / Device Role / Timing Role: Digitizing downconverted IF signals with minimal added noise (46μVRMS input-referred) and distortion. Use Value: 84.1dB SNR enables detection of signals 14dB below noise floor; 200MHz bandwidth supports analysis up to 100MHz IF. |
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 |
|---|---|---|---|
| AD9269-20EBZ | 20Msps, 16-bit, dual-channel; requires 3.3V AVDD + 1.8V DVDD; higher power (340mW); JESD204B interface only. | Targeted at FPGA-based systems with JESD204B lanes; less suitable for simple parallel or LVDS interfacing. | Choose AD9269-20EBZ when JESD204B serialization and higher SFDR (102dB) outweigh power and supply complexity. |
| LTC2180IUP#PBF | 25Msps, 16-bit, dual-channel; identical pinout and 1.8V supply; lower power (78mW); reduced SFDR (92dB) and SNR (78dB). | Better suited for cost-sensitive, lower-bandwidth applications where 25Msps headroom is needed but 84dB SNR is not required. | Choose LTC2180IUP#PBF when sampling rate margin is critical and SNR/SFDR trade-offs are acceptable for simplified thermal design. |
Compared with AD9269-20EBZ and LTC2180IUP#PBF, the LTC2270IUP#PBF uniquely balances 84.1dB SNR, 99dB SFDR, and 160mW power in a single 1.8V supply with flexible CMOS/LVDS outputs - making it optimal for portable, thermally constrained, high-fidelity dual-channel digitization where JESD204B is unnecessary.
Availability
LTC2270IUP#PBF is available at Aetrix Electronics and suitable for portable medical imaging, software-defined radio development, and industrial multi-channel data acquisition requiring stable component supply across extended temperature ranges.
Supply support for LTC2270IUP#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. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing technologies, serving industrial, communications, automotive, and healthcare markets.
The LTC2270IUP#PBF belongs to ADI's high-speed precision ADC product line, designed specifically for applications demanding simultaneous dual-channel sampling, ultra-low noise, and low power in compact 1.8V systems.
FAQ
What is the guaranteed operating temperature range for the LTC2270IUP#PBF?
The LTC2270IUP#PBF is specified for operation from –40°C to +85°C (industrial grade), with all DC and AC specifications - including ±2.3LSB INL, 84.1dB SNR, and 99dB SFDR - guaranteed across this full range. This makes the LTC2270IUP#PBF suitable for deployment in uncontrolled environments such as field-deployable medical devices or outdoor industrial sensors without thermal derating.
Does the LTC2270IUP#PBF support differential analog input only, or can it accept single-ended signals?
The LTC2270IUP#PBF requires differential analog input on both channels (AIN1± and AIN2±); single-ended drive is not supported. The internal architecture relies on balanced sampling to achieve its specified 84.1dB SNR and 200MHz bandwidth. External baluns or differential drivers are necessary for single-ended source interfacing, and mismatched termination will degrade CMRR and SFDR performance.
How does the power consumption of the LTC2270IUP#PBF change when using DDR-LVDS versus full-rate CMOS outputs?
In full-rate CMOS mode (OVDD = 1.8V), the LTC2270IUP#PBF consumes 160mW total. In DDR-LVDS mode at 3.5mA output current, power increases to 299mW due to higher driver current and dual-supply requirements (VDD = 1.8V, OVDD = 1.8V). The 1.75mA LVDS mode reduces this to 232mW - a trade-off between EMI reduction and power efficiency that must be validated against system thermal constraints.
Can the LTC2270IUP#PBF be configured for independent channel gain/offset calibration?
No, the LTC2270IUP#PBF does not provide per-channel digital calibration registers. However, it guarantees tight analog matching: ±0.06%FS gain matching and ±1.5mV offset matching between channels over temperature. For applications requiring finer correction, external FPGA-based calibration using the OF1/OF2 flags and known test tones is recommended - leveraging the device's consistent linearity (±2.3LSB INL) as a stable baseline.
What is the function of the SENSE pin on the LTC2270IUP#PBF, and how does it affect input range selection?
The SENSE pin on the LTC2270IUP#PBF configures the full-scale input range: tied to GND → ±0.525V; tied to VDD → ±1.05V; driven with 0.625V–1.3V external voltage → ±0.84×VSENSE. This direct analog programming eliminates need for external resistive dividers or DACs, enabling rapid hardware-configured range adaptation - critical for multi-gain sensor interfaces in portable medical or test equipment using the LTC2270IUP#PBF.
LTC2270IUP#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:
- -40°C ~ 85°C
- Supplier Device Package:
- 64-QFN (9x9)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC2270IUP#PBF FAQ
1.How can I place an order for LTC2270IUP#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC2270IUP#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 LTC2270IUP#PBF reliable?
The price and inventory of LTC2270IUP#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC2270IUP#PBF is usually 5 days.
3.What payment methods are accepted for LTC2270IUP#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC2270IUP#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC2270IUP#PBF?
LTC2270IUP#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC2270IUP#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 LTC2270IUP#PBF?
For technical support, including LTC2270IUP#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC2270IUP#PBF requirements.
6.How does Aetrix verify that LTC2270IUP#PBF is sourced from the original manufacturer or authorized distributors?
All LTC2270IUP#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 LTC2270IUP#PBF meets industry standards.
7.What is the process for return or replacement of LTC2270IUP#PBF?
All LTC2270IUP#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC2270IUP#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 LTC2270IUP#PBF part is unused and in its original packaging.
Return procedure for LTC2270IUP#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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