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Analog Devices Inc. LTC1419ISW#PBF
- Part No.:
- LTC1419ISW#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
LTC1419ISW#PBF.pdf
- Description:
- IC ADC 14BIT SAR 28SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,075
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Product details
Overview
LTC1419ISW#PBF from Analog Devices (formerly Linear Technology) is a 14-bit, 800ksps successive-approximation analog-to-digital converter with true differential inputs, internal 2.5V reference, and Nap/Sleep shutdown modes. It delivers 81.5dB S/(N + D) at 100kHz, ±2.5V bipolar input range, and no pipeline delay-enabling high-fidelity signal acquisition in telecom and spectrum analysis systems.
For engineers reviewing the LTC1419ISW#PBF datasheet, LTC1419ISW#PBF pinout, LTC1419ISW#PBF application, or LTC1419ISW#PBF equivalent, key selection factors include its 20MHz full-power bandwidth, 60dB common-mode rejection, 950ns conversion time, and 28-pin SO package compatibility with industrial temperature operation (–40°C to +85°C).
Technical Context
The LTC1419ISW#PBF employs a capacitive DAC-based successive approximation architecture with integrated sample-and-hold, eliminating pipeline latency and ensuring deterministic timing. Its differential input stage acquires signals up to 20MHz while rejecting common-mode noise via 60dB CMRR across frequency.
Conversion is initiated by CONVST falling edge and signaled by BUSY output; data is latched in 2's complement format on parallel D13–D0 outputs. Power management includes two digitally selectable shutdown modes: Nap mode (1.5mA supply current) and Sleep mode (250µA), both controlled via SHDN and CS pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit with no missing codes-guarantees monotonic transfer function for precision measurement. |
| Sampling Rate | 800ksps maximum-supports real-time capture of signals up to 400kHz Nyquist frequency. |
| S/(N + D) | 81.5dB at 100kHz input-enables >13.2 effective bits for high-dynamic-range applications. |
| THD | –93dB at 100kHz-minimizes harmonic contamination in spectral analysis and imaging. |
| Input Range | ±2.5V differential-matches standard op-amp output ranges and eliminates level-shifting circuitry. |
| Full-Power BW | 20MHz-allows undersampling of RF/IF signals beyond Nyquist without aliasing degradation. |
| Power Dissipation | 150mW at ±5V supplies-balances speed and thermal load in compact embedded systems. |
Pinout & Package
Package: 28-lead plastic SO (Small Outline), RoHS-compliant, surface-mountable, 0.300" wide body.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +AIN (Pin 1) | Differential analog input positive | Accepts ±2.5V input; sampled simultaneously with –AIN for common-mode rejection. |
| –AIN (Pin 2) | Differential analog input negative | Completes differential pair; enables ground-loop elimination in noisy environments. |
| VREF (Pin 3) | 2.5V reference output | Internally trimmed bandgap source; bypassed with 1µF for low-noise ADC operation. |
| REFCOMP (Pin 4) | Reference amplifier compensation | Requires ≥10µF capacitor to AGND for stability of internal reference amplifier. |
| AGND (Pin 5) | Analog ground return | Must be tied to DGND at single point to minimize digital switching noise coupling. |
| D13–D0 (Pins 6–20) | 14-bit parallel data outputs | 2's complement format; three-state controlled by CS and RD for µP/DSP bus interfacing. |
| BUSY (Pin 25) | Conversion status indicator | Active-low signal; rising edge marks valid data ready on D13–D0 outputs. |
| CONVST (Pin 23) | Conversion start trigger | Falling-edge sensitive; initiates SAR cycle with <40ns setup relative to CS↓. |
| SHDN (Pin 21) | Power shutdown control | Low-active; selects Nap (CS=0) or Sleep (CS=1) mode to reduce current to 1.5mA or 250µA. |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay | Successive approximation architecture ensures deterministic 950ns conversion time-critical for closed-loop control and real-time triggering. |
| True differential input | 60dB common-mode rejection up to 100kHz enables accurate measurement of small signals in high-noise industrial or telecom environments. |
| Internal 2.5V reference | 15ppm/°C tempco and ±10LSB full-scale error eliminate need for external reference in cost-sensitive designs. |
| Nap and Sleep shutdown | Two-tier power management allows rapid wake-up (<400ns) from Nap mode or ultra-low quiescent current in Sleep mode for battery-powered systems. |
| 20MHz full-power bandwidth | Supports direct sampling of IF signals in communications receivers without front-end downconversion. |
Applications
| Telecommunications Baseband Processing | Digital Signal Processing Front-End |
|---|---|
Use Scenario: Digitizing I/Q baseband signals from RF mixers in cellular infrastructure equipment. IC Role / Device Role / Timing Role: High-speed, low-distortion ADC capturing 100kHz–400kHz modulated waveforms with precise amplitude and phase fidelity. Use Value: 81.5dB S/(N + D) and –93dB THD preserve EVM and adjacent channel power ratio in LTE/WCDMA transceivers. | Use Scenario: Feeding real-time sensor data into FPGA-based FFT engines for vibration monitoring in industrial drives. IC Role / Device Role / Timing Role: Parallel-output ADC synchronized to DSP clock via BUSY and RD handshake for zero-latency data streaming. Use Value: No pipeline delay and 800ksps throughput enable continuous 4096-point FFT updates every 5.12ms without data gaps. |
| Multiplexed Data Acquisition Systems | Spectrum Analysis Instrumentation |
Use Scenario: High-channel-count DAQ using analog multiplexers to share one LTC1419ISW#PBF across multiple sensors. IC Role / Device Role / Timing Role: Precision ADC with fast acquisition (90ns min) and low input leakage (±1µA) minimizing crosstalk between channels. Use Value: ±2.5V input range and differential architecture reject shared ground noise across thermocouple, strain gauge, and RTD inputs. | Use Scenario: Real-time spectrum analyzer front-end digitizing 0–20MHz analog IF signals for EMC testing and RF debugging. IC Role / Device Role / Timing Role: Wide-bandwidth ADC enabling direct sampling of broadband signals without analog pre-filtering stages. Use Value: 20MHz full-power bandwidth and 86dB S/(N + D) at Nyquist support accurate amplitude measurement of harmonics and spurs up to 400kHz. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed, high-resolution ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS8588SIPM | 16-bit, 100ksps, SPI interface, internal reference; lower speed but higher resolution and serial interface. | Preferred for isolated, low-pin-count systems where throughput <100ksps suffices and serial configuration is needed. | Select when resolution >14-bit and system-level isolation or reduced PCB routing complexity outweighs speed requirement. |
| AD7960BCPZ | 18-bit, 5Msps, pseudo-differential input, LVDS output; requires external reference and has no Nap/Sleep modes. | Suited for high-throughput test equipment requiring >16-bit ENOB and jitter-insensitive digital interface. | Choose when system demands >16-bit effective resolution at multi-MHz rates and can accommodate external reference design overhead. |
Compared with ADS8588SIPM and AD7960BCPZ, the LTC1419ISW#PBF uniquely balances 14-bit precision, 800ksps parallel throughput, integrated reference, and dual shutdown modes-making it optimal for space-constrained, medium-speed industrial and telecom signal chains where deterministic timing and low BOM count are critical.
Availability
LTC1419ISW#PBF is available at Aetrix Electronics and suitable for telecommunications baseband processing, digital signal processing front-ends, and multiplexed data acquisition systems requiring stable component supply across extended temperature ranges.
Supply support for LTC1419ISW#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, automotive, communications, and healthcare markets.
The LTC1419ISW#PBF belongs to ADI's legacy Linear Technology precision data acquisition product line, engineered for high-speed, high-accuracy analog-to-digital conversion in noise-sensitive instrumentation and real-time control applications.
FAQ
What is the operating temperature range for the LTC1419ISW#PBF?
The LTC1419ISW#PBF is rated for industrial operation from –40°C to +85°C. This is confirmed in the Absolute Maximum Ratings table and applies to all DC and dynamic specifications marked with the ● symbol. The "I" grade suffix in LTC1419ISW#PBF explicitly denotes this extended temperature range, distinguishing it from the commercial-grade "C" version (0°C to 70°C).
Does the LTC1419ISW#PBF require an external reference, or does it have an internal one?
The LTC1419ISW#PBF includes a factory-trimmed, temperature-compensated 2.5V internal reference accessible at Pin 3 (VREF). It can operate fully self-contained with this reference, delivering ±10LSB full-scale error and ±15ppm/°C tempco. An external reference may be applied to VREF for improved accuracy, but it is not required for basic functionality.
How does the BUSY signal function in the LTC1419ISW#PBF interface?
In the LTC1419ISW#PBF, the BUSY pin is an active-low open-drain output that goes low at conversion start and rises at completion. Data on D13–D0 becomes valid on the rising edge of BUSY. This synchronous handshake eliminates need for fixed delay timing and ensures reliable read timing even under varying clock conditions.
What are the power supply requirements for the LTC1419ISW#PBF?
The LTC1419ISW#PBF requires dual ±5V supplies: AVDD = DVDD = +5V (Pin 28/27) and VSS = –5V (Pin 26), with recommended operating range of ±4.75V to ±5.25V. Total supply current is 11mA (positive) and 19mA (negative) typical at full speed; Nap mode reduces total current to ~1.6mA, Sleep mode to ~250µA.
Can the LTC1419ISW#PBF accept single-ended inputs, or is it strictly differential?
The LTC1419ISW#PBF supports both configurations: true differential input (±AIN) for optimal noise rejection, and single-ended input (with –AIN grounded) as specified in Note 6 of the datasheet. In single-ended mode, the full ±2.5V range remains usable, and linearity, offset, and full-scale specs are guaranteed per the datasheet's "Note 6" qualification.
LTC1419ISW#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 28-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 14
- Sampling Rate (Per Second):
- 800k
- 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:
- -40°C ~ 85°C
- Supplier Device Package:
- 28-SOIC
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC1419ISW#PBF FAQ
1.How can I place an order for LTC1419ISW#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1419ISW#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 LTC1419ISW#PBF reliable?
The price and inventory of LTC1419ISW#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1419ISW#PBF is usually 5 days.
3.What payment methods are accepted for LTC1419ISW#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1419ISW#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1419ISW#PBF?
LTC1419ISW#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1419ISW#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 LTC1419ISW#PBF?
For technical support, including LTC1419ISW#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1419ISW#PBF requirements.
6.How does Aetrix verify that LTC1419ISW#PBF is sourced from the original manufacturer or authorized distributors?
All LTC1419ISW#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 LTC1419ISW#PBF meets industry standards.
7.What is the process for return or replacement of LTC1419ISW#PBF?
All LTC1419ISW#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1419ISW#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 LTC1419ISW#PBF part is unused and in its original packaging.
Return procedure for LTC1419ISW#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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