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Analog Devices Inc. LTC1741IFW#TRPBF
- Part No.:
- LTC1741IFW#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 48-TFSOP (0.240", 6.10mm Width)
- Datasheet:
-
LTC1741IFW#TRPBF.pdf
- Description:
- IC ADC 12BIT PIPELINED 48TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,061
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Product details
Overview
LTC1741IFW#TRPBF from Analog Devices (formerly Linear Technology) is a 12-bit, 65 Msps pipelined analog-to-digital converter optimized for high-frequency, wide dynamic range signal digitization in communications infrastructure. It delivers 72 dB SNR and 85 dB SFDR at 3.2 V input range, operates from a single 5 V supply, and features ±1 V or ±1.6 V differential input range selection via the SENSE pin. It is deployed in cellular base station receivers and spectrum analyzers requiring undersampling of IF signals up to 70 MHz.
For engineers reviewing the LTC1741IFW#TRPBF datasheet, LTC1741IFW#TRPBF pinout, LTC1741IFW#TRPBF application, or LTC1741IFW#TRPBF equivalent, key selection criteria include aperture jitter (0.15 psRMS), full-power bandwidth (240 MHz), INL (±1 LSB), DNL (±0.8 LSB), and dual-supply digital I/O compatibility (OVDD = 0.5 V to 5 V).
Technical Context
The LTC1741IFW#TRPBF implements a four-stage CMOS pipelined ADC architecture with integrated sample-and-hold, correction logic, and output latches. Its differential ENC/ENC encode interface supports PECL, GTL, TTL, CMOS, or sinusoidal drive, enabling low-jitter sampling critical for IF undersampling applications.
It uses a resistor-programmable internal reference and 2.35 V VCM bias generator to support flexible analog front-end design. The flow-through TSSOP-48 pinout separates analog, digital, and power domains to minimize crosstalk, while separate OVDD and VDD supplies isolate noise-sensitive analog circuitry from digital output drivers.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit with no missing codes - guarantees monotonic transfer function across full temperature range. |
| Sample Rate | 65 Msps - enables real-time digitization of wideband IF signals up to 70 MHz using undersampling. |
| SNR / SFDR | 72 dB / 85 dB at 3.2 V range (5 MHz input) - defines usable dynamic range for high-fidelity signal capture in receiver chains. |
| Aperture Jitter | 0.15 psRMS - limits sampling uncertainty-induced noise floor degradation at high input frequencies. |
| INL / DNL | ±1 LSB / ±0.8 LSB - ensures accurate amplitude fidelity and minimal harmonic distortion in measurement systems. |
| Analog Input Range | Selectable ±1 V or ±1.6 V differential - allows optimization for SNR (larger range) or SFDR (smaller range) per application. |
| Full-Power Bandwidth | 240 MHz - supports broadband RF/IF inputs without significant amplitude roll-off before digitization. |
| Power Dissipation | 1.275 W at 65 Msps - requires thermal-aware PCB layout and heatsinking in high-density baseband modules. |
Pinout & Package
The LTC1741IFW#TRPBF is housed in a 48-lead plastic TSSOP (FW package) with exposed pad for thermal enhancement and flow-through pin arrangement to simplify high-speed PCB routing and reduce signal crosstalk.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN+, AIN– | Differential analog input | Accepts ±1 V or ±1.6 V differential signal; requires 2.35 V common-mode bias (VCM) for optimal linearity. |
| SENSE | Input range select | GND = ±1 V range; VDD = ±1.6 V range; intermediate voltage enables custom scaling. |
| VCM | Common-mode reference output | 2.35 V buffered output; must be bypassed with ≥4.7 µF capacitor to ground for stability and noise rejection. |
| ENC, ENC | Differential encode clock input | Edge-triggered sampling control; accepts PECL, GTL, TTL, CMOS, or sine wave; determines aperture timing accuracy. |
| MSBINV | Output data format control | Low = 2's complement; High = offset binary - selects interface compatibility with DSP/FPGA data paths. |
| OE | Digital output enable | Active-low tri-state control; allows bus sharing in multi-ADC systems without external logic. |
| CLKOUT | Data valid strobe | Rising edge indicates stable D11–D0 and OF outputs; synchronizes latch timing in downstream logic. |
| OF | Over/underflow flag | High indicates input exceeded selected full-scale range - enables real-time clipping detection and AGC feedback. |
| OVDD | Digital output supply | 0.5 V to 5 V programmable - permits direct interfacing with 1.8 V, 2.5 V, 3.3 V, or 5 V logic families. |
| D0–D11 | Parallel digital output | 12-bit parallel CMOS outputs; timing referenced to CLKOUT rising edge with 4.9 ns typical delay. |
Key Features
| Feature | Design Value |
|---|---|
| Differential encode interface | Supports ultralow-jitter sampling with sinusoidal, PECL, or CMOS clocks - eliminates need for external clock conditioning in IF sampling designs. |
| Programmable analog input range | Pin-selectable ±1 V or ±1.6 V differential range - enables trade-off between SNR (favoring larger range) and SFDR (favoring smaller range) without hardware change. |
| Separate OVDD supply | 0.5 V to 5 V digital output rail - eliminates level-shifting components when interfacing with low-voltage FPGAs or DSPs. |
| Flow-through TSSOP-48 layout | Signal path routing from left (analog inputs) to right (digital outputs) - minimizes trace length mismatch and reduces board-level EMI coupling. |
| Integrated 2.35 V VCM reference | Stable, low-drift common-mode bias source - simplifies transformer-coupled or op-amp-driven front-end design and improves DC accuracy. |
| 5-cycle pipeline latency | Deterministic 5-clock-cycle delay from ENC edge to valid D11–D0 output - enables precise timing alignment in synchronous digital signal processing chains. |
Applications
| Cellular Base Station Receiver | Spectrum Analyzer Front-End |
|---|---|
Use Scenario: Digitizing 70 MHz IF signals from RF downconverters in LTE/5G macrocell base stations. IC Role / Device Role / Timing Role: High-speed ADC capturing wide instantaneous bandwidth with minimal quantization noise and spurious content. Use Value: 72 dB SNR and 85 dB SFDR preserve modulation accuracy for 256-QAM signals; 0.15 psRMS jitter enables clean undersampling without added phase noise. | Use Scenario: Real-time frequency-domain analysis of RF emissions across 10 kHz–100 MHz bands. IC Role / Device Role / Timing Role: Core digitizer feeding FFT engines in portable or benchtop spectrum analyzers. Use Value: 240 MHz full-power bandwidth captures harmonics and transient events; no missing codes ensures amplitude fidelity across dynamic sweeps. |
| Imaging System Data Acquisition | Communications Test Equipment |
Use Scenario: Capturing time-domain waveforms from ultrasound transducers or radar return signals. IC Role / Device Role / Timing Role: Precision ADC converting analog echo returns into digital samples for beamforming and image reconstruction. Use Value: ±1 LSB INL maintains spatial resolution; selectable input range adapts to varying signal amplitudes across scan depths. | Use Scenario: Signal generation and analysis in vector signal analyzers (VSAs) and arbitrary waveform generators (AWGs). IC Role / Device Role / Timing Role: High-fidelity digitizer verifying modulated signal integrity (EVM, ACLR) in 5G NR and Wi-Fi 6E test setups. Use Value: 87 dB SFDR at 30 MHz input suppresses spurious artifacts during adjacent-channel measurements; 5-cycle latency enables tight loopback synchronization. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9226ASTZ-65 | 12-bit, 65 Msps; 72 dB SNR, 82 dB SFDR; requires external reference; 48-lead LQFP package. | Lacks integrated VCM and SENSE-based range selection; higher layout complexity for reference and bias networks. | Choose when legacy ADI ecosystem integration or LQFP assembly preference outweighs LTC1741IFW#TRPBF's on-chip bias and flexibility. |
| LTC2245IUP#PBF | 14-bit, 65 Msps; 74 dB SNR, 90 dB SFDR; 64-lead QFN; higher resolution but higher power (1.8 W). | Superior dynamic range for precision instrumentation; not pin-compatible; requires different PCB footprint and thermal management. | Choose when 14-bit resolution and >90 dB SFDR justify increased cost, power, and redesign effort. |
Compared with AD9226ASTZ-65 and LTC2245IUP#PBF, the LTC1741IFW#TRPBF offers unique integration of VCM generation, pin-selectable input range, and flow-through TSSOP layout-reducing BOM count and layout risk in space-constrained communications modules without sacrificing 65 Msps performance.
Availability
LTC1741IFW#TRPBF is available at Aetrix Electronics and suitable for cellular infrastructure, spectrum analysis equipment, imaging system data acquisition, and communications test instrumentation requiring stable component supply across extended industrial temperature ranges (–40°C to +85°C).
Supply support for LTC1741IFW#TRPBF 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 aerospace, industrial, automotive, and communications markets.
The LTC1741IFW#TRPBF belongs to ADI's high-speed precision ADC product line, designed specifically for demanding wireless infrastructure and instrumentation applications where dynamic range, jitter performance, and analog interface flexibility are critical.
FAQ
What is the operating temperature range for the LTC1741IFW#TRPBF?
The LTC1741IFW#TRPBF is rated for operation from –40°C to +85°C (Industrial grade). This is confirmed by the "I" suffix in the part number and specified in the Absolute Maximum Ratings table. The device maintains full AC and DC performance specifications across this entire range, including ±1 LSB INL and 72 dB SNR at 25°C and end-of-range conditions.
Does the LTC1741IFW#TRPBF require an external reference voltage?
No, the LTC1741IFW#TRPBF includes an internal 2.35 V bandgap reference and difference amplifier to generate its own REFHA/REFHB and REFLA/REFLB reference levels. An external reference is optional and only needed if custom scaling beyond ±1 V or ±1.6 V is required via the SENSE pin with resistor dividers.
How is the input range selected on the LTC1741IFW#TRPBF?
The LTC1741IFW#TRPBF input range is selected via the SENSE pin (Pin 1): grounding SENSE configures ±1 V differential input range; connecting SENSE to VDD configures ±1.6 V differential input range. Intermediate voltages enable programmable scaling, and the datasheet confirms this behavior is guaranteed by design.
What digital logic families are compatible with the LTC1741IFW#TRPBF outputs?
The LTC1741IFW#TRPBF digital outputs support 0.5 V to 5 V OVDD, making them directly compatible with 1.8 V, 2.5 V, 3.3 V, and 5 V CMOS/TTL logic families. Output voltage levels meet VOH ≥ 4 V and VOL ≤ 0.4 V at IO = ±200 µA/1.6 mA, ensuring robust interfacing with FPGAs, DSPs, and ASICs without level shifters.
Can the LTC1741IFW#TRPBF be used with single-ended encode signals?
Yes - the LTC1741IFW#TRPBF ENC and ENC pins accept single-ended TTL or CMOS signals. When using single-ended drive, the ENC pin is driven actively while ENC is bypassed to ground with a 0.1 µF capacitor, as explicitly shown in the Functional Block Diagram and Pin Functions section of the datasheet.
LTC1741IFW#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 48-TFSOP (0.240", 6.10mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 65M
- Number of Inputs:
- 1
- Input Type:
- Differential
- Data Interface:
- 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:
- 5V
- Voltage - Supply, Digital:
- 5V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 48-TSSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC1741IFW#TRPBF FAQ
1.How can I place an order for LTC1741IFW#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1741IFW#TRPBF 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 LTC1741IFW#TRPBF reliable?
The price and inventory of LTC1741IFW#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1741IFW#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC1741IFW#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1741IFW#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1741IFW#TRPBF?
LTC1741IFW#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1741IFW#TRPBF 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 LTC1741IFW#TRPBF?
For technical support, including LTC1741IFW#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1741IFW#TRPBF requirements.
6.How does Aetrix verify that LTC1741IFW#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC1741IFW#TRPBF 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 LTC1741IFW#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC1741IFW#TRPBF?
All LTC1741IFW#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1741IFW#TRPBF, 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 LTC1741IFW#TRPBF part is unused and in its original packaging.
Return procedure for LTC1741IFW#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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