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Analog Devices Inc. LTC1419ACG#PBF
- Part No.:
- LTC1419ACG#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
LTC1419ACG#PBF.pdf
- Description:
- IC ADC 14BIT SAR 28SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,050
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Product details
Overview
LTC1419ACG#PBF from Analog Devices (formerly Linear Technology) is a 14-bit, 800ksps successive-approximation ADC with true differential inputs, ±2.5V bipolar input range, 81.5dB S/(N+D) at 100kHz, and integrated 2.5V reference. It operates from ±5V supplies, draws 150mW, and targets high-speed data acquisition in spectrum analysis and imaging systems.
For engineers reviewing the LTC1419ACG#PBF datasheet, LTC1419ACG#PBF pinout, LTC1419ACG#PBF application, or LTC1419ACG#PBF equivalent, key selection factors include its no-pipeline-delay architecture, 20MHz full-power bandwidth, Nap/Sleep shutdown modes, and 60dB common-mode rejection for noise-sensitive analog front-ends.
Technical Context
The LTC1419ACG#PBF implements a capacitor-based successive approximation register (SAR) architecture with an internal sample-and-hold and precision bandgap reference. Its differential input stage acquires signals simultaneously on +AIN and –AIN with 90ns minimum acquisition time and 20MHz small-signal bandwidth.
Conversion is initiated by the falling edge of CONVST; BUSY goes low during conversion and rises to indicate data validity. The 14-bit parallel output uses two's complement format and features three-state drivers controlled by CS and RD, enabling direct interfacing with microprocessors and FIFOs without pipeline latency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit with guaranteed no missing codes - ensures monotonicity and integrity in critical measurement applications. |
| Sampling Rate | 800ksps maximum - supports real-time capture of signals up to 400kHz Nyquist frequency. |
| S/(N + D) | 81.5dB at 100kHz input - delivers 13.2 effective bits for high-fidelity signal reconstruction. |
| THD | –93dB at 100kHz - minimizes harmonic contamination in spectral analysis and communications. |
| Input Range | ±2.5V differential - enables direct connection to op-amp buffers without level-shifting circuitry. |
| Power Dissipation | 150mW at full rate; 1.2mW in Sleep mode - balances performance and battery-life constraints in portable instrumentation. |
| Common-Mode Rejection | 60dB - suppresses ground-loop noise and EMI in industrial sensor interfaces. |
Pinout & Package
Package: 28-pin plastic SSOP (Small Outline Package), 300 mil width, JEDEC MS-012AC compliant. Thermal resistance θJA = 130°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +AIN (Pin 1) | Differential analog input positive | Accepts input voltage up to AVDD; paired with –AIN for common-mode noise rejection. |
| –AIN (Pin 2) | Differential analog input negative | Completes differential pair; both pins must be driven within AVDD/AVSS rails. |
| VREF (Pin 3) | 2.5V reference output | Provides buffered internal reference; requires 1µF bypass to AGND for stability and noise reduction. |
| REFCOMP (Pin 4) | Reference amplifier compensation | Must be bypassed with ≥10µF capacitor to AGND to stabilize internal reference amplifier. |
| AGND (Pin 5) | Analog ground reference | Star-ground point for analog supply decoupling; tie directly to DGND at single point. |
| D13–D6 (Pins 6–13) | MSB-aligned parallel data outputs | Three-state, 2's complement format; active when CS and RD are low. |
| DGND (Pin 14) | Digital ground reference | Return path for digital logic; connected internally to AGND but kept separate externally. |
| AVDD (Pin 28) | +5V analog supply | Bypass with 10µF tantalum + 0.1µF ceramic to AGND; powers analog core and reference. |
| DVDD (Pin 27) | +5V digital supply | Shorted to AVDD per datasheet; powers digital interface logic. |
| VSS (Pin 26) | –5V analog/digital supply | Bypass with 10µF tantalum + 0.1µF ceramic to AGND; shared rail for analog and digital sections. |
| CONVST (Pin 23) | Conversion start trigger | Falling-edge sensitive; initiates SAR cycle; timing-critical for avoiding conversion errors. |
| CS (Pin 24) | Chip select / mode control | Low enables interface; combined with SHDN determines Nap (CS=0) or Sleep (CS=1) shutdown. |
| BUSY (Pin 25) | Conversion status indicator | Active-low open-drain output; rising edge marks valid data ready on bus. |
| SHDN (Pin 21) | Power shutdown enable | Low activates shutdown; mode selected by CS state - not a standalone reset. |
| RD (Pin 22) | Data read strobe | Enables output drivers only when CS is low; controls data access timing relative to BUSY. |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay | Immediate data availability after BUSY rise - eliminates latency-induced timing jitter in closed-loop control systems. |
| True differential input stage | Simultaneous sampling of +AIN/–AIN with 60dB CMRR - enables rejection of cable-borne noise in remote sensor interfaces. |
| Integrated 2.5V reference | 15ppm/°C tempco, ±20ppm initial accuracy - eliminates external reference component count and layout complexity. |
| Nap and Sleep shutdown modes | 1.2mW Sleep current (250µA ISS + 1µA ISS) - extends battery life in intermittent-sampling portable instruments. |
| 20MHz full-power bandwidth | Supports undersampling of RF IF signals up to 20MHz - enables direct digitization in software-defined radio front-ends. |
Applications
| Spectrum Analysis | Imaging Systems |
|---|---|
Use Scenario: Real-time FFT-based spectral monitoring of RF signals in baseband receivers or EMC test equipment. IC Role / Device Role / Timing Role: High-fidelity digitizer capturing wideband IF samples at 800ksps with minimal distortion and no pipeline latency. Use Value: 81.5dB S/(N+D) and –93dB THD preserve signal integrity for accurate amplitude and phase measurements across 0–400kHz. | Use Scenario: Digitizing line-scan CCD or CMOS sensor outputs in medical X-ray or industrial inspection cameras. IC Role / Device Role / Timing Role: Precision analog front-end ADC converting differential pixel voltage pairs into 14-bit digital image data. Use Value: ±2.5V input range matches typical sensor output swing; 60dB CMRR rejects common-mode noise from high-density PCB layouts. |
| Telecommunications | Digital Signal Processing |
Use Scenario: Baseband sampling in T1/E1 channel banks or voice-over-IP codec evaluation platforms. IC Role / Device Role / Timing Role: Low-latency ADC feeding DSP algorithms requiring deterministic timing and bit-accurate conversion results. Use Value: No missing codes and 14-bit resolution ensure error-free representation of voice waveforms for perceptual coding. | Use Scenario: Input stage of real-time FIR filter or adaptive equalizer hardware accelerators in FPGA-based prototyping systems. IC Role / Device Role / Timing Role: Parallel-output ADC synchronized to FPGA clock domain via CONVST/BUSY handshake. Use Value: Three-state outputs and µP-compatible timing simplify interface logic; 950ns conversion time enables tight loop timing budgets. |
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 |
|---|---|---|---|
| ADS8515IPW | 16-bit, 250ksps, single-ended input, external reference required | Higher resolution but lower speed; lacks integrated reference and differential input | Select for DC-precision applications where throughput < 250ksps suffices and external reference is acceptable. |
| MAX1190ECM+ | 14-bit, 1Msps, ±5V input range, no integrated reference, 32-pin QFN | Faster sampling but wider input range and no on-chip 2.5V reference; higher power (220mW) | Select when >800ksps is required and board space allows QFN; verify external reference design and thermal management. |
Compared with ADS8515IPW and MAX1190ECM+, the LTC1419ACG#PBF uniquely combines integrated 2.5V reference, true differential input, and 800ksps throughput in a 28-pin SSOP - simplifying layout and reducing BOM count for mid-speed, noise-sensitive acquisition systems.
Availability
LTC1419ACG#PBF is available at Aetrix Electronics and suitable for spectrum analysis, imaging systems, and telecommunications equipment requiring stable component supply, long-term obsolescence planning, and traceable sourcing.
Supply support for LTC1419ACG#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 LTC1419ACG#PBF belongs to ADI's legacy Linear Technology precision data converter product line, designed specifically for high-dynamic-range, low-latency sampling in instrumentation and signal intelligence applications.
FAQ
What is the operating temperature range for the LTC1419ACG#PBF?
The LTC1419ACG#PBF is rated for commercial operation from 0°C to 70°C. This grade is specified across the full temperature range for key parameters including integral linearity error (±0.8 LSB), S/(N+D) (78 dB min), and power dissipation (150 mW typ). It is distinct from the I-grade (–40°C to 85°C) variants like LTC1419AIG.
Does the LTC1419ACG#PBF require an external clock source?
No, the LTC1419ACG#PBF does not require an external clock. It contains a fully integrated internal clock generator optimized for 800ksps operation. Timing is controlled solely by the CONVST signal - a falling edge initiates conversion, and BUSY indicates completion. External clocking is neither supported nor necessary for nominal operation.
Can the LTC1419ACG#PBF operate with a single +5V supply?
No, the LTC1419ACG#PBF requires dual ±5V supplies (AVDD = DVDD = +5V, VSS = –5V) as specified in Absolute Maximum Ratings and Operating Conditions. Attempting single-supply operation violates the –6V minimum VSS rating and will damage the device or cause undefined behavior. The analog input range (±2.5V) and internal reference architecture depend on symmetric rails.
How does the Nap mode differ from Sleep mode in the LTC1419ACG#PBF?
In Nap mode (SHDN = 0V, CS = 0V), the LTC1419ACG#PBF draws 1.5mA total supply current and wakes in 400ns; in Sleep mode (SHDN = 0V, CS = 5V), it draws 250µA positive and 1µA negative supply current with same wake-up time. Nap retains faster readiness for burst sampling; Sleep maximizes energy savings during extended idle periods.
Is the LTC1419ACG#PBF pin-compatible with other members of the LTC1419 family?
Yes, the LTC1419ACG#PBF shares identical pinout and footprint with all 28-pin SSOP variants in the LTC1419 family, including LTC1419CG, LTC1419AIG, and LTC1419IG. Differences are limited to grade (C vs I), internal reference calibration (standard vs A-grade), and packaging - all maintain full electrical and mechanical compatibility in the G package.
LTC1419ACG#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 28-SSOP (0.209", 5.30mm 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:
- 0°C ~ 70°C
- Supplier Device Package:
- 28-SSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC1419ACG#PBF FAQ
1.How can I place an order for LTC1419ACG#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1419ACG#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 LTC1419ACG#PBF reliable?
The price and inventory of LTC1419ACG#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1419ACG#PBF is usually 5 days.
3.What payment methods are accepted for LTC1419ACG#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1419ACG#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1419ACG#PBF?
LTC1419ACG#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1419ACG#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 LTC1419ACG#PBF?
For technical support, including LTC1419ACG#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1419ACG#PBF requirements.
6.How does Aetrix verify that LTC1419ACG#PBF is sourced from the original manufacturer or authorized distributors?
All LTC1419ACG#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 LTC1419ACG#PBF meets industry standards.
7.What is the process for return or replacement of LTC1419ACG#PBF?
All LTC1419ACG#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1419ACG#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 LTC1419ACG#PBF part is unused and in its original packaging.
Return procedure for LTC1419ACG#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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