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Analog Devices Inc. LTC1419AISW#PBF
- Part No.:
- LTC1419AISW#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
LTC1419AISW#PBF.pdf
- Description:
- IC ADC 14BIT SAR 28SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:2,141
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Product details
Overview
LTC1419AISW#PBF from Analog Devices (formerly Linear Technology) is a 14-bit, 800ksps successive-approximation ADC with true differential inputs, internal 2.5V reference, and ±2.5V bipolar input range. It delivers 81.5dB S/(N + D) at 100kHz, 93dB THD, and operates from ±5V supplies with 150mW typical power dissipation. Used in high-speed data acquisition systems requiring high dynamic range and common-mode noise rejection.
For engineers reviewing the LTC1419AISW#PBF datasheet, LTC1419AISW#PBF pinout, LTC1419AISW#PBF application, or LTC1419AISW#PBF equivalent, key selection criteria include no missing codes, absence of pipeline delay, 20MHz full-power bandwidth, Nap/Sleep shutdown modes, and compatibility with µP/DSP parallel interfaces using BUSY/CONVST/RD handshaking.
Technical Context
The LTC1419AISW#PBF implements a capacitor-based successive approximation register (SAR) architecture with integrated differential sample-and-hold. Its 20MHz analog input bandwidth supports undersampling beyond Nyquist, while 60dB common-mode rejection enables robust differential signal acquisition up to ±2.5V.
Conversion timing is deterministic: 950–1150ns conversion time, 90–300ns acquisition time, and no pipeline latency. Control logic uses active-low CONVST (edge-triggered), CS-gated RD, and SHDN-selectable Nap (1.5mA) or Sleep (250µA) shutdown modes - all synchronized to an internal clock.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit with guaranteed no missing codes - ensures 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 - enables >13.2 effective bits for low-noise spectral analysis. |
| THD | –93dB at 100kHz - minimizes harmonic contamination in high-fidelity signal chains. |
| Input Range | ±2.5V differential - matches standard op-amp output ranges and eliminates level-shifting circuitry. |
| Power Dissipation | 150mW at full speed - balances performance and thermal load in dense PCB layouts. |
| Full-Power BW | 20MHz - allows accurate digitization of fast transients and RF-IF signals without external anti-aliasing complexity. |
Pinout & Package
Package: 28-pin SOIC (Small Outline Integrated Circuit), surface-mount, RoHS-compliant #PBF finish. Pin pitch: 0.050", body width: 0.300", JEDEC MS-012AC.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +AIN (1) | Differential analog input positive | Accepts ±2.5V input; sampled simultaneously with –AIN for common-mode rejection. |
| –AIN (2) | Differential analog input negative | Completes differential pair; enables ground-loop elimination and noise cancellation. |
| VREF (3) | 2.5V reference output | Internal bandgap reference buffered to drive external circuitry or DAC-adjustable span control. |
| REFCOMP (4) | Reference amplifier compensation | Requires ≥1µF bypass to AGND; stabilizes internal reference amplifier for low-noise operation. |
| AGND (5) | Analog ground reference | Must be tied to DGND at single point; separates analog return path from digital switching noise. |
| D13–D0 (6–20) | 14-bit parallel output bus | Three-state, 2's complement format; driven only when CS and RD are low; no pipeline delay. |
| BUSY (25) | Conversion status indicator | Active-low signal; data valid on rising edge - simplifies FIFO/DSP interface timing. |
| CONVST (23) | Conversion start trigger | Falling-edge sensitive; initiates SAR cycle; must meet 40ns setup relative to CS↓. |
| SHDN (21) | Power shutdown control | Low-active; selects Nap mode (CS=0) or Sleep mode (CS=1) - reduces current to 1.5mA or 250µA. |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay | Immediate data availability after BUSY↑ - eliminates latency-induced phase errors in closed-loop control. |
| Differential input sample-and-hold | 20MHz bandwidth with 60dB CMRR - rejects EMI and ground bounce in industrial sensor interfaces. |
| Two shutdown modes | Nap (1.5mA) enables rapid wake-up (<400ns); Sleep (250µA) maximizes battery life in portable instrumentation. |
| Internal 2.5V reference | 15ppm/°C tempco, ±10LSB full-scale error - eliminates external reference component count and layout area. |
| µP-compatible parallel interface | Asynchronous CONVST/RD/BUSY handshake - integrates directly with 8051, ARM Cortex-M, or TI C2000 without glue logic. |
Applications
| Telecommunications Baseband | Digital Signal Processing |
|---|---|
Use Scenario: Digitizing IF signals in software-defined radio receivers operating at 100–400kHz baseband. IC Role / Device Role / Timing Role: High-fidelity ADC front-end capturing I/Q channel pairs with minimal intermodulation distortion. Use Value: 86dB SFDR at 390kHz enables clean separation of adjacent channels in multi-carrier LTE/FDD systems. | Use Scenario: Real-time spectral analysis in FPGA-accelerated spectrum analyzers. IC Role / Device Role / Timing Role: Low-latency sampling engine feeding FFT engines with deterministic 950ns conversion time. Use Value: No pipeline delay ensures precise time alignment between time-domain samples and frequency-bin outputs. |
| Multiplexed Data Acquisition | Imaging Systems |
Use Scenario: High-channel-count industrial DAQ systems scanning 16+ sensor inputs via analog multiplexer. IC Role / Device Role / Timing Role: Shared ADC core with fast acquisition (90ns min) enabling sub-microsecond per-channel settling. Use Value: 20MHz input bandwidth maintains fidelity even with multiplexer switch glitches and source impedance variations. | Use Scenario: Medical ultrasound beamformer front-ends digitizing echo return signals. IC Role / Device Role / Timing Role: Precision digitizer capturing wideband RF echoes with 81.5dB SNR at 100kHz center frequency. Use Value: ±2.5V input range matches transducer preamp outputs, eliminating DC-blocking capacitors and associated phase shift. |
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 |
|---|---|---|---|
| ADS8588SIPM | 16-bit, 100ksps, SPI interface, internal reference, ±10V input range | Lower throughput but higher resolution; suited for precision DC-coupled measurements over AC performance | Select when absolute accuracy > dynamic range; avoid for >200kHz signal content. |
| AD7960BCPZ-RL7 | 18-bit, 5Msps, serial LVDS interface, external reference required, ±5V input | Higher speed/resolution but demands complex layout, external ref, and FPGA-level interface logic | Select for ultra-high-resolution imaging or radar; not drop-in due to interface and supply differences. |
Compared with ADS8588SIPM and AD7960BCPZ-RL7, the LTC1419AISW#PBF provides optimal balance of 14-bit resolution, 800ksps throughput, parallel µP interface simplicity, and integrated reference - making it ideal for cost-sensitive, space-constrained embedded systems where deterministic timing and low design overhead are critical.
Availability
LTC1419AISW#PBF is available at Aetrix Electronics and suitable for telecommunications baseband digitization, digital signal processing acceleration, and multiplexed industrial data acquisition requiring stable component supply across extended temperature ranges (–40°C to +85°C).
Supply support for LTC1419AISW#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 LTC1419AISW#PBF belongs to ADI's legacy Linear Technology precision data converter product line, designed specifically for high-speed, low-distortion sampling in demanding instrumentation and communications infrastructure applications.
FAQ
What is the operating temperature range for the LTC1419AISW#PBF?
The LTC1419AISW#PBF is rated for industrial operation from –40°C to +85°C. This is confirmed by the "I" grade suffix in the part number and specified in the Absolute Maximum Ratings table. The device maintains full performance across this range, including guaranteed 14-bit no-missing-codes behavior and 81.5dB S/(N + D) at 100kHz under worst-case conditions.
Does the LTC1419AISW#PBF require an external clock source?
No, the LTC1419AISW#PBF does not require an external clock. It contains a fully integrated internal clock generator that supports its maximum 800ksps sampling rate. Timing is controlled solely by the CONVST signal - a falling edge initiates conversion, and BUSY indicates completion. External clocks are neither needed nor supported.
Can the LTC1419AISW#PBF operate with a single +5V supply?
No, the LTC1419AISW#PBF requires dual ±5V supplies (AVDD = DVDD = +5V, VSS = –5V). Its analog input range is ±2.5V, and internal circuitry - including the sample-and-hold and reference amplifier - is designed for symmetric bipolar operation. Operation outside the specified ±4.75V to ±5.25V range violates Absolute Maximum Ratings and risks damage or parametric failure.
How does the SHDN pin interact with CS to select shutdown modes in the LTC1419AISW#PBF?
In the LTC1419AISW#PBF, SHDN is the primary enable/disable control: when high, the device operates normally; when low, shutdown mode is selected based on CS state. If CS is low, Nap mode activates (1.5mA supply current, <400ns wake-up). If CS is high, Sleep mode activates (250µA supply current, longer wake-up). Both modes retain register states and reference bias.
Is the LTC1419AISW#PBF pin-compatible with earlier LTC1419 variants like LTC1419CSW?
Yes, the LTC1419AISW#PBF is pin-compatible with all 28-pin SOIC variants of the LTC1419 family, including LTC1419CSW and LTC1419IG. The "A" suffix denotes improved AC specifications (e.g., tighter THD and S/(N + D)), while "I" grade confirms –40°C to +85°C operation. Mechanical footprint, pin functions, and electrical interface timing remain identical across these variants.
LTC1419AISW#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:
- -
LTC1419AISW#PBF FAQ
1.How can I place an order for LTC1419AISW#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1419AISW#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 LTC1419AISW#PBF reliable?
The price and inventory of LTC1419AISW#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1419AISW#PBF is usually 5 days.
3.What payment methods are accepted for LTC1419AISW#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1419AISW#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1419AISW#PBF?
LTC1419AISW#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1419AISW#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 LTC1419AISW#PBF?
For technical support, including LTC1419AISW#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1419AISW#PBF requirements.
6.How does Aetrix verify that LTC1419AISW#PBF is sourced from the original manufacturer or authorized distributors?
All LTC1419AISW#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 LTC1419AISW#PBF meets industry standards.
7.What is the process for return or replacement of LTC1419AISW#PBF?
All LTC1419AISW#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1419AISW#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 LTC1419AISW#PBF part is unused and in its original packaging.
Return procedure for LTC1419AISW#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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