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Analog Devices Inc. LTC1414CGN#TRPBF
- Part No.:
- LTC1414CGN#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
LTC1414CGN#TRPBF.pdf
- Description:
- IC ADC 14BIT SAR 28SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,984
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Product details
Overview
LTC1414CGN#TRPBF from Analog Devices (formerly Linear Technology) is a 14-bit, 2.2 Msps successive-approximation ADC with ±2.5 V bipolar differential input range, internal 2.5 V reference, and parallel 14-bit CMOS output. It delivers 80 dB S/(N + D) at 100 kHz and 78 dB at Nyquist (1.1 MHz), operates on ±5 V supplies, and targets high-speed data acquisition in spectrum analysis and DSP systems.
For engineers reviewing the LTC1414CGN#TRPBF datasheet, LTC1414CGN#TRPBF pinout, LTC1414CGN#TRPBF application, or LTC1414CGN#TRPBF equivalent, this page provides verified specifications, package mapping, timing behavior, real-world AC performance limits, and validated alternative parts for signal chain design and BOM optimization.
Technical Context
The LTC1414CGN#TRPBF implements a fully integrated successive-approximation register (SAR) architecture with an on-chip differential sample-and-hold amplifier, precision bandgap reference, and internal clock-requiring no external timing components. Its 40 MHz analog input bandwidth supports undersampling of RF signals beyond Nyquist.
It features true differential acquisition with 70 dB common-mode rejection up to 1 MHz, ±1 µA analog input leakage, and 40–100 ns acquisition time. Conversion is initiated by a falling edge on CONVST, with BUSY signaling active conversion; output data appears with zero pipeline delay and is latched in two's complement format.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit with no missing codes; guarantees monotonic transfer function across full temperature range. |
| Sampling Rate | 2.2 Msps maximum; enables real-time capture of signals up to 1.1 MHz (Nyquist) without aliasing mitigation circuitry. |
| S/(N + D) | 80 dB at 100 kHz input; defines usable dynamic range for low-distortion baseband digitization in telecom receivers. |
| SFDR | 95 dB at 100 kHz; ensures spurious-free operation critical for spectral purity in spectrum analyzers and radar IF sampling. |
| Analog Input Range | ±2.5 V differential; eliminates level-shifting op amps and simplifies interface to sensor front-ends or instrumentation amplifiers. |
| Power Dissipation | 175 mW typical on ±5 V supplies; enables high-speed conversion without forced-air cooling in compact embedded systems. |
| Aperture Jitter | 3 ps RMS; limits SNR degradation at high input frequencies, supporting >12 ENOB up to 1 MHz. |
Pinout & Package
Package: 28-lead narrow SSOP (GN), 5.6 mm × 10.2 mm body, 0.635 mm pitch, RoHS-compliant, moisture-sensitive level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN+, AIN– (Pins 1, 2) | Differential analog input pair | Accepts ±2.5 V full-scale differential signal; common-mode voltage independent of conversion accuracy (INL/DNL stable); 70 dB CMRR suppresses ground-loop noise. |
| VREF (Pin 3) | 2.5 V reference output | Internally trimmed bandgap source; buffered via 2 kΩ series resistor; can be overdriven by external reference for span adjustment. |
| REFCOMP (Pin 4) | Reference amplifier compensation node | Must be bypassed to AGND with ≥10 µF ceramic/tantalum + 0.1 µF ceramic; stabilizes reference amplifier and minimizes noise coupling. |
| AGND, DGND, OGND (Pins 5, 23, 14) | Analog, digital, and output driver ground returns | Separate ground pins reduce digital switching noise injection into analog path; all must connect to single-point system ground plane. |
| CONVST (Pin 24) | Conversion start trigger | Falling-edge sensitive; initiates SAR cycle; minimum pulse width 40 ns; timing-critical for throughput consistency. |
| BUSY (Pin 25) | Conversion status indicator | Active-low open-drain output; asserts during 220–400 ns conversion; used for handshaking with microprocessor or FPGA. |
| D13–D0 (Pins 6–13, 15–20) | 14-bit parallel data outputs (MSB to LSB) | Two's complement format; no pipeline delay; output drivers powered by OVDD (Pin 21), configurable for 3 V or 5 V logic levels. |
| AVDD, DVDD, OVDD (Pins 28, 22, 21) | Analog, digital, and output supply rails | AVDD = +5 V (bypassed to AGND); DVDD = +5 V (digital core); OVDD = +5 V or +3 V (output buffers); decoupling mandatory per datasheet layout guidelines. |
| VSS (Pin 26) | Negative supply rail | –5 V supply for analog and digital sections; requires 10 µF + 0.1 µF bypass to AGND; absolute max –6 V. |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay | Output data valid immediately after BUSY deassertion; enables deterministic timing for real-time control loops and synchronous sampling. |
| Internal 2.5 V reference with tempco ≤ ±15 ppm/°C | Eliminates external reference IC and trimming; maintains <±0.01% full-scale drift over 0°C to 70°C operating range. |
| Differential input with 40 MHz bandwidth | Supports direct RF sampling of IF signals up to 20 MHz; avoids transformer or balun in wideband receiver front-ends. |
| 70 dB CMRR up to 100 kHz | Rejects power-supply noise and EMI coupled equally onto both inputs; critical for isolated sensor interfaces and motor current sensing. |
| ±2.5 V bipolar input range | Matches standard op amp output swing; removes need for level-shifting circuitry and reduces component count in data acquisition modules. |
Applications
| Telecommunications Baseband | Digital Signal Processing |
|---|---|
|
Use Scenario: Digitizing I/Q channels in 3G/4G LTE radio transceivers at intermediate frequency. IC Role / Device Role / Timing Role: High-fidelity 14-bit sampling ADC capturing complex baseband waveforms with minimal harmonic distortion. Use Value: 95 dB SFDR prevents adjacent-channel interference; 2.2 Msps rate supports 1.1 MHz instantaneous bandwidth per channel. |
Use Scenario: Real-time FFT-based spectral analysis in portable test equipment. IC Role / Device Role / Timing Role: Precision analog-to-digital converter feeding FPGA-based FFT engine with deterministic latency. Use Value: Zero pipeline delay ensures phase coherence across multiple channels; 80 dB S/(N + D) enables detection of weak signals buried in noise floor. |
| Multiplexed Data Acquisition | Imaging Systems |
|
Use Scenario: High-channel-count industrial DAQ system scanning thermocouple, strain gauge, and voltage sensors. IC Role / Device Role / Timing Role: Fast-settling ADC interfaced to multiplexer and precision op amp front-end. Use Value: 40 ns minimum acquisition time allows sub-microsecond per-channel sampling; ±0.75 LSB INL ensures measurement repeatability across 100+ channels. |
Use Scenario: Line-scan camera digitizing analog CCD output in medical X-ray or industrial inspection systems. IC Role / Device Role / Timing Role: High-speed, low-noise ADC synchronizing to pixel clock for linear image sensor readout. Use Value: 3 ps RMS aperture jitter preserves spatial resolution; 78 dB S/(N + D) at 1.1 MHz Nyquist supports >1000-line resolution per frame. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9240ASTZ-20 | 14-bit, 20 MSPS; LVDS output; external reference required; higher power (550 mW); 48-lead LQFP. | Higher speed but requires clock distribution, termination, and reference design; suited for multi-channel synchronized sampling. | Select when throughput >2.2 Msps is needed and system supports LVDS interface and external reference calibration. |
| MAX1186ETL+ | 14-bit, 2.5 Msps; internal reference; 3.3 V single supply; 40-lead TQFN; lower power (125 mW); no negative supply. | Eliminates ±5 V supplies and associated bypassing complexity; limited to unipolar 0–2.5 V input range. | Select for battery-powered or space-constrained designs where bipolar input is not required and 3.3 V logic compatibility is preferred. |
Compared with LTC1414CGN#TRPBF, AD9240ASTZ-20 offers higher speed at the cost of greater layout complexity and power, while MAX1186ETL+ simplifies power design but sacrifices bipolar input capability and common-mode rejection-making LTC1414CGN#TRPBF optimal for ±5 V systems requiring differential noise immunity and proven 2.2 Msps fidelity.
Availability
LTC1414CGN#TRPBF is available at Aetrix Electronics and suitable for telecommunications baseband digitization, digital signal processing, and multiplexed data acquisition systems requiring stable component supply, long-term obsolescence management, and traceable sourcing.
Supply support for LTC1414CGN#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 industrial, automotive, communications, and healthcare markets.
The LTC1414CGN#TRPBF belongs to ADI's legacy Linear Technology precision data converter product line, designed specifically for high-dynamic-range, low-latency sampling in demanding instrumentation and communications infrastructure applications.
FAQ
What is the maximum sampling rate supported by the LTC1414CGN#TRPBF?
The LTC1414CGN#TRPBF supports a maximum sampling rate of 2.2 Msps, with guaranteed timing performance including 220–400 ns conversion time and 370–454 ns total throughput time. This rate is specified under recommended operating conditions: VDD = +5 V, VSS = –5 V, fSAMPLE = 2.2 MHz, and tr/tf = 5 ns. Exceeding this rate may degrade S/(N + D) and SFDR performance.
Does the LTC1414CGN#TRPBF require an external reference voltage?
No, the LTC1414CGN#TRPBF includes an internal 2.5 V temperature-compensated bandgap reference accessible at Pin 3 (VREF). It is factory-trimmed to ±0.8% initial accuracy and exhibits ≤±15 ppm/°C tempco. An external reference can be applied to VREF for span adjustment, but it is not required for basic operation.
What is the analog input configuration supported by the LTC1414CGN#TRPBF?
The LTC1414CGN#TRPBF supports both differential and single-ended analog input configurations. In differential mode (AIN+ and AIN– driven), it achieves 70 dB common-mode rejection up to 100 kHz and full 40 MHz small-signal bandwidth. In single-ended mode (AIN– grounded), it maintains ±2.5 V full-scale range with identical AC performance metrics.
How is the output data format structured for the LTC1414CGN#TRPBF?
The LTC1414CGN#TRPBF outputs 14-bit two's complement data on parallel D13 (MSB) to D0 (LSB) pins. The output is latched and stable with zero pipeline delay-data appears immediately after BUSY deassertion. Full-scale range maps to –8192 to +8191 decimal, with 1 LSB = 305.2 µV for a ±2.5 V input range.
What package type and thermal characteristics apply to the LTC1414CGN#TRPBF?
The LTC1414CGN#TRPBF is housed in a 28-lead narrow SSOP (GN) package with θJA = 110°C/W and TJMAX = 110°C. It is rated for 0°C to 70°C ambient operation (C-grade). Proper PCB layout-including dedicated analog/digital ground planes, localized 10 µF + 0.1 µF bypassing at AVDD/VSS/OVDD, and separation of analog/digital traces-is essential to achieve specified thermal and dynamic performance.
LTC1414CGN#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 28-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 14
- Sampling Rate (Per Second):
- 2.2M
- Number of Inputs:
- 1
- Input Type:
- Differential, Single Ended
- Data Interface:
- Parallel
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- ±5V
- Voltage - Supply, Digital:
- 5V
- Features:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 28-SSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC1414CGN#TRPBF FAQ
1.How can I place an order for LTC1414CGN#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1414CGN#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 LTC1414CGN#TRPBF reliable?
The price and inventory of LTC1414CGN#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1414CGN#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC1414CGN#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1414CGN#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1414CGN#TRPBF?
LTC1414CGN#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1414CGN#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 LTC1414CGN#TRPBF?
For technical support, including LTC1414CGN#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1414CGN#TRPBF requirements.
6.How does Aetrix verify that LTC1414CGN#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC1414CGN#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 LTC1414CGN#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC1414CGN#TRPBF?
All LTC1414CGN#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1414CGN#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 LTC1414CGN#TRPBF part is unused and in its original packaging.
Return procedure for LTC1414CGN#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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