My Inquiry
My Account
Analog Devices Inc. LTC1419CG#PBF
- Part No.:
- LTC1419CG#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
LTC1419CG#PBF.pdf
- Description:
- IC ADC 14BIT SAR 28SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,476
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
LTC1419CG#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 and 93dB THD, operates from ±5V supplies, and features no pipeline delay or missing codes-ideal for high-fidelity spectrum analysis and telecom data acquisition.
For engineers reviewing the LTC1419CG#PBF datasheet, LTC1419CG#PBF pinout, LTC1419CG#PBF application, or LTC1419CG#PBF equivalent, key selection criteria include its 20MHz full-power bandwidth, Nap/Sleep shutdown modes (1.5mA / 250µA), 28-pin SSOP package, and µP-compatible parallel 14-bit 2's complement output with BUSY/CONVST/RD handshaking.
Technical Context
The LTC1419CG#PBF implements a capacitor-based successive approximation register (SAR) architecture with integrated differential sample-and-hold, supporting simultaneous sampling of +AIN and –AIN up to 20MHz. Its internal 2.5V bandgap reference exhibits ±15ppm/°C tempco and drives a precision reference amplifier with REFCOMP compensation.
Conversion timing is deterministic: 950–1150ns conversion time, 90–300ns acquisition time, and no pipeline latency. Digital interface uses active-low CONVST (edge-triggered), CS-gated RD, and three-state 14-bit parallel outputs (D13–D0, MSB-first, 2's complement), with BUSY indicating conversion status and data validity on its rising edge.
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 Nyquist-limited input frequencies up to 400kHz with 80dB S/(N+D). |
| S/(N + D) | 81.5dB at 100kHz input-translates to ~13.3 effective bits for low-noise signal capture. |
| THD | –93dB at 100kHz-enables clean spectral analysis in communications and imaging systems. |
| Input Range | ±2.5V differential-rejects common-mode noise up to 60dB while accepting rail-to-rail common-mode voltages. |
| Power Dissipation | 150mW at full speed; 7.5mW in Nap mode-enables thermal management in dense mixed-signal PCB layouts. |
| Full-Power BW | 20MHz-allows undersampling of IF signals beyond Nyquist without amplitude loss. |
| Operating Temp | 0°C to 70°C (Commercial grade)-validated for industrial control and test equipment environments. |
Pinout & Package
Package: 28-lead plastic SSOP (Small Outline Package), 0.209" body width, JEDEC MO-153 compliant. Pin pitch: 0.025", lead finish: matte tin (RoHS-compliant #PBF).
| 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 in sensor interfaces. |
| VREF (3) | 2.5V reference output | Internally trimmed bandgap source; bypass with 1µF for low-noise operation. |
| REFCOMP (4) | Reference amplifier compensation | Requires ≥10µF bypass to AGND for stability of internal reference amplifier. |
| AGND (5) | Analog ground reference | Must be tied to DGND at single point; critical for PSRR and CMRR performance. |
| D13–D6 (6–13) | Data outputs MSB to bit 6 | Three-state, 2's complement format; driven only when CS=LOW and RD=LOW. |
| DGND (14) | Digital ground | Internal logic ground; connect to AGND at star point to minimize digital noise coupling. |
| D5–D0 (15–20) | Data outputs bit 5 to LSB | Same timing and drive as D13–D6; forms complete 14-bit parallel bus. |
| SHDN (21) | Shutdown control input | Active-low; selects Nap (CS=LOW) or Sleep (CS=HIGH) mode with distinct current draw. |
| RD (22) | Read strobe input | Enables output drivers; data valid on BUSY rising edge after RD assertion. |
| CONVST (23) | Conversion start trigger | Falling-edge sensitive; initiates SAR cycle; must meet t2 setup relative to CS↓. |
| CS (24) | Chip select | Enables CONVST/RD recognition and determines shutdown mode with SHDN. |
| BUSY (25) | Conversion status indicator | Active-low open-drain; rises to indicate data ready on D13–D0. |
| VSS (26) | Negative supply (–5V) | Bypass to AGND with 10µF tantalum + 0.1µF ceramic for low-impedance return path. |
| DVDD (27) | Digital +5V supply | Shorted to AVDD per layout guidance; powers digital logic and output buffers. |
| AVDD (28) | Analog +5V supply | Bypass to AGND with 10µF tantalum + 0.1µF ceramic; separates analog power domain. |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay | Immediate data availability after BUSY rise-eliminates FIFO buffering in real-time DSP interfaces. |
| True differential input | 60dB CMRR up to 100kHz-rejects noise in motor control feedback or medical sensor front-ends. |
| Two shutdown modes | Nap (1.5mA) for fast wake-up; Sleep (250µA) for ultra-low standby-extends battery life in portable instruments. |
| Internal 2.5V reference | ±15ppm/°C tempco, ±20mV initial accuracy-removes external reference cost and board space. |
| 20MHz full-power bandwidth | Supports direct IF sampling at 10–50MHz bands-reduces need for analog downconversion stages. |
| ±2.5V bipolar input range | Matches standard op-amp output rails-enables direct connection to LT1223/LT1363 driver amplifiers. |
Applications
| Telecommunications Baseband | Digital Signal Processing |
|---|---|
Use Scenario: Digitizing I/Q baseband signals in cellular infrastructure receivers operating at 10–30MHz IF. IC Role / Device Role / Timing Role: High-speed SAR ADC capturing dual-channel complex waveforms with synchronized sampling. Use Value: 20MHz full-power bandwidth and 81.5dB S/(N+D) preserve EVM and ACLR in LTE/WCDMA demodulation. | Use Scenario: Real-time FFT processing of vibration spectra in predictive maintenance edge nodes. IC Role / Device Role / Timing Role: Precision data acquisition front-end feeding FPGA-based spectral analysis engine. Use Value: No missing codes and 14-bit linearity ensure accurate amplitude tracking across 100dB dynamic range. |
| Multiplexed Data Acquisition | High-Speed Imaging Systems |
Use Scenario: Scanning multi-sensor arrays (strain, temperature, pressure) in industrial PLC modules. IC Role / Device Role / Timing Role: Centralized ADC with differential inputs rejecting ground noise across distributed sensors. Use Value: 60dB CMRR and ±2.5V range accommodate varying sensor output offsets without level-shifting. | Use Scenario: Capturing line-scan CCD outputs in machine vision inspection systems at >500k lines/sec. IC Role / Device Role / Timing Role: High-throughput digitizer interfacing directly to analog video signal chain. Use Value: 800ksps rate with deterministic 1.15µs conversion time enables precise pixel clock alignment. |
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, SPI interface, external reference required; no internal VREF or differential input stage. | Better resolution but lower speed; suited for DC-critical instrumentation over AC performance. | Select when absolute accuracy > speed, and system can accommodate external reference and serial interface. |
| MAX1190ECM+ | 14-bit, 1Msps, single-ended input only, 3.3V supply, no Nap/Sleep modes; THD = –85dB at 100kHz. | Higher sample rate but degraded distortion and no differential noise rejection. | Select for 3.3V systems needing marginal speed boost, where common-mode noise is not dominant. |
Compared with ADS8515IPW and MAX1190ECM+, the LTC1419CG#PBF uniquely balances 800ksps throughput, differential input noise immunity, integrated reference, and dual shutdown modes-making it optimal for compact, mixed-supply, noise-sensitive acquisition systems where deterministic parallel timing is required.
Availability
LTC1419CG#PBF is available at Aetrix Electronics and suitable for telecommunications baseband digitization, digital signal processing front-ends, and multiplexed industrial data acquisition requiring stable component supply across extended production cycles.
Supply support for LTC1419CG#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 semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LTC1419CG#PBF belongs to ADI's legacy Linear Technology precision data converter family, engineered for high-speed, low-distortion sampling in demanding signal chain applications where AC performance and ease of use are critical.
FAQ
What is the maximum sampling frequency supported by the LTC1419CG#PBF?
The LTC1419CG#PBF supports a maximum sampling frequency of 800ksps, with guaranteed performance including 81.5dB S/(N + D) and 93dB THD at 100kHz input. At the Nyquist frequency of 400kHz, it maintains 80dB S/(N + D) and 86dB THD. This rate is achievable across the full 0°C to 70°C commercial temperature range with ±5V supplies and proper decoupling.
Does the LTC1419CG#PBF require an external reference voltage?
No, the LTC1419CG#PBF includes an internal 2.5V temperature-compensated bandgap reference with ±15ppm/°C tempco and ±20mV initial accuracy, accessible at the VREF pin. An external reference may be used by overdriving VREF, but it is not required. The internal reference eliminates BOM cost and layout complexity while delivering stable performance for most high-speed acquisition tasks.
How does the differential input architecture of the LTC1419CG#PBF improve noise immunity?
The LTC1419CG#PBF achieves 60dB common-mode rejection ratio (CMRR) by sampling +AIN and –AIN simultaneously with a matched differential sample-and-hold. This rejects ground loops, power supply ripple, and EMI-induced noise common to both inputs-critical in motor drives, medical sensors, and long-cable industrial interfaces where noise coupling is unavoidable.
What are the power consumption characteristics of the LTC1419CG#PBF in shutdown modes?
In Nap mode (SHDN = LOW, CS = LOW), the LTC1419CG#PBF draws 1.5mA total supply current. In Sleep mode (SHDN = LOW, CS = HIGH), it consumes just 250µA. Both modes retain register state and allow sub-microsecond wake-up via CONVST, enabling aggressive power cycling in battery-powered test equipment without sacrificing responsiveness.
Can the LTC1419CG#PBF interface directly with a microprocessor or FPGA without glue logic?
Yes, the LTC1419CG#PBF features a µP-compatible 14-bit parallel interface with active-low CONVST, CS, RD, and BUSY signals. Its three-state outputs, deterministic timing (e.g., t6 = 20–50ns CONVST-to-BUSY delay), and no-pipeline-delay operation allow direct connection to FPGA GPIO banks or microcontroller parallel ports-no address latching or state machines needed for basic acquisition sequences.
LTC1419CG#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:
- -
LTC1419CG#PBF FAQ
1.How can I place an order for LTC1419CG#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1419CG#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 LTC1419CG#PBF reliable?
The price and inventory of LTC1419CG#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1419CG#PBF is usually 5 days.
3.What payment methods are accepted for LTC1419CG#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1419CG#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1419CG#PBF?
LTC1419CG#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1419CG#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 LTC1419CG#PBF?
For technical support, including LTC1419CG#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1419CG#PBF requirements.
6.How does Aetrix verify that LTC1419CG#PBF is sourced from the original manufacturer or authorized distributors?
All LTC1419CG#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 LTC1419CG#PBF meets industry standards.
7.What is the process for return or replacement of LTC1419CG#PBF?
All LTC1419CG#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1419CG#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 LTC1419CG#PBF part is unused and in its original packaging.
Return procedure for LTC1419CG#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
LTC1419CG#PBF Tags
-
ADC081C021CIMKX/NOPB
Texas Instruments
-
MCP3021A5T-E/OT
Microchip Technology
-
TLA2024IRUGR
Texas Instruments
-
MCP3221A5T-E/OT
Microchip Technology
-
MCP3221A5T-I/OT
Microchip Technology
-
MCP3221A4T-E/OT
Microchip Technology
-
MCP3221A6T-E/OT
Microchip Technology
-
MCP3221A0T-E/OT
Microchip Technology
-
MCP3221A1T-E/OT
Microchip Technology
-
ADC121S021CIMFX/NOPB
Texas Instruments
-
MCP3001-I/MS
Microchip Technology
-
MCP3001-I/SN
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
