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Analog Devices Inc. LTC1863LIGN#WTRPBF
- Part No.:
- LTC1863LIGN#WTRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
LTC1863LIGN#WTRPBF.pdf
- Description:
- IC ADC 12BIT SAR 16SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,003
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Product details
Overview
LTC1863LIGN#WTRPBF from Analog Devices is a micropower, 12-bit, 8-channel, 175ksps successive-approximation ADC with SPI/MICROWIRE serial interface, internal 1.25V reference, and true differential input capability. It operates from a single 2.7V supply, draws 750µA at full speed, and supports unipolar (0V–2.5V) or bipolar (±1.25V) conversion modes in industrial process control and battery-operated data acquisition systems.
For engineers reviewing the LTC1863LIGN#WTRPBF datasheet, LTC1863LIGN#WTRPBF pinout, LTC1863LIGN#WTRPBF application, or LTC1863LIGN#WTRPBF equivalent, key selection criteria include guaranteed 2.7V operation, automotive-grade –40°C to +85°C temperature range, AEC-Q100 qualification, 16-pin narrow SSOP package, and compatibility with LTC1863/LTC1867 pinouts for design reuse.
Technical Context
The LTC1863LIGN#WTRPBF implements a capacitive successive-approximation architecture with a differential 12-bit SAR DAC and low-power comparator rejecting common-mode noise. Its analog input multiplexer supports configurable single-ended or differential channel pairs (e.g., CH0/CH1, CH2/CH3), with CH7/COM selectable as either an eighth channel or common-mode reference.
Digital control uses a 7-bit configuration word (SD, OS, S1, S0, COM, UNI, SLP) shifted via SDI to select channel, polarity, and sleep mode. Conversion is initiated by a rising edge on CS/CONV; result is read via SDO synchronized to SCK, in straight binary (unipolar) or two's complement (bipolar) format, with automatic nap mode reducing current to 170µA between conversions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - guarantees monotonicity and no missing codes over temperature |
| Sample Rate | 175ksps - enables real-time capture of signals up to ~87.5kHz (Nyquist) |
| INL Error | ±4LSB max - ensures accurate end-point linearity for precision measurement |
| Supply Voltage | 2.7V to 3.6V - supports direct connection to single-cell Li-ion or 3.3V rails without regulation |
| Supply Current | 750µA at 175ksps - enables >13-hour runtime on a 10mAh coin cell at full throughput |
| Input Range | 0V–2.5V (unipolar) or ±1.25V (bipolar) - matches standard sensor output spans and op-amp swing limits |
| Reference | Internal 1.25V ±15mV (±1.2%) - eliminates external reference component count and layout area |
Pinout & Package
Package: 16-lead narrow plastic SSOP (GN), 3.9mm × 4.9mm, 0.635mm pitch, RoHS-compliant, lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CH0–CH7/COM (1–8) | Analog input channels / common-mode reference | Configurable as eight single-ended inputs or four differential pairs; CH7/COM serves as dedicated negative input when COM=1 |
| REFCOMP (9) | 2.5V reference buffer output | Provides buffered 2× gain of VREF; requires 10µF + 0.1µF bypass for stable low-noise operation |
| VREF (10) | 1.25V bandgap reference output | Factory-trimmed ±1.2% accuracy; can be overdriven externally for improved drift/accuracy |
| CS/CONV (11) | Conversion start / serial frame enable | Rising edge initiates conversion; low level enables serial data transfer on SDO |
| SCK (12) | Serial clock input | Accepts up to 20MHz clock; falling edge captures SDO data for reliable timing margin |
| SDO (13) | Serial data output | Outputs 12-bit result in straight binary (unipolar) or two's complement (bipolar) format |
| SDI (14) | Serial data input | Accepts 7-bit configuration word to set channel, polarity, and sleep mode before each conversion |
| GND (15) | Analog and digital ground | Single ground plane required; star grounding recommended for mixed-signal layout |
| VDD (16) | Power supply | Supplies both analog and digital sections; requires 10µF + 0.1µF local bypassing |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 qualified | Validated for automotive applications including engine control modules and ADAS sensor interfaces |
| True differential inputs | Rejects common-mode noise on paired channels (e.g., CH0/CH1), improving SNR in noisy environments |
| Automatic nap mode | Reduces quiescent current from 750µA to 170µA between conversions without software intervention |
| Configurable input MUX | Supports mixed single-ended/differential acquisition in one scan sequence via 7-bit control word |
| On-chip 1.25V reference | Eliminates need for external reference IC, saving BOM cost and PCB area while maintaining ±1.2% initial accuracy |
Applications
| Industrial Process Control | Battery-Operated Data Loggers |
|---|---|
Use Scenario: Monitoring temperature, pressure, and flow sensors across multiple PLC I/O modules in factory automation. IC Role / Device Role / Timing Role: 8-channel multiplexed ADC digitizing analog sensor outputs at 175ksps with ±4LSB INL for closed-loop control fidelity. Use Value: Single-chip solution reduces system component count vs discrete ADC + MUX + reference, lowering assembly cost and calibration complexity. | Use Scenario: Long-term environmental monitoring using thermistors, humidity sensors, and accelerometers powered by lithium primary cells. IC Role / Device Role / Timing Role: Micropower 12-bit ADC enabling 13+ hour continuous sampling at 175ksps on 10mAh capacity. Use Value: Automatic nap mode cuts average current to 170µA between conversions, extending battery life without firmware overhead. |
| Multiplexed Test Equipment | Automotive Sensor Interfaces |
Use Scenario: Portable handheld multimeters and oscilloscope front-ends requiring flexible channel routing and dual-polarity support. IC Role / Device Role / Timing Role: Configurable MUX accepting both single-ended (CHx-to-GND) and differential (CHx-to-CHy) inputs within same acquisition cycle. Use Value: Eliminates need for external analog switches or programmable gain amplifiers, simplifying signal chain design and board layout. | Use Scenario: In-vehicle tire pressure monitoring (TPMS) and battery management system (BMS) voltage sensing under AEC-Q100 requirements. IC Role / Device Role / Timing Role: Automotive-grade ADC operating from –40°C to +85°C with internal reference and 2.7V minimum supply for cold-cranking resilience. Use Value: #W suffix indicates controlled manufacturing and automotive reliability reporting, satisfying OEM qualification documentation needs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit, multiplexed, low-power ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS8325IPW | 16-bit resolution, 100ksps, SPI interface, no internal reference, requires external 2.5V reference | Higher resolution but lower sample rate; lacks integrated reference and automotive qualification | Select when 16-bit precision outweighs need for internal reference simplicity and AEC-Q100 compliance |
| LTC1864LIGN#PBF | 16-bit resolution, 175ksps, identical pinout and package, same internal reference, but commercial grade (0°C to 70°C) | Same electrical behavior and footprint, but not qualified for automotive or extended temperature use | Select for non-automotive industrial designs where extended temperature range is unnecessary and cost sensitivity favors commercial variant |
Compared with ADS8325IPW and LTC1864LIGN#PBF, the LTC1863LIGN#WTRPBF uniquely combines AEC-Q100 qualification, integrated 1.25V reference, and guaranteed 2.7V operation-making it optimal for space-constrained, battery-powered automotive and industrial systems requiring minimal external components and robust temperature performance.
Availability
LTC1863LIGN#WTRPBF is available at Aetrix Electronics and suitable for industrial process control, battery-operated data loggers, and automotive sensor interfaces requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC1863LIGN#WTRPBF 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 is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LTC1863L series belongs to Analog Devices' precision data acquisition product line, designed specifically for low-power, multi-channel, high-accuracy measurement in space- and energy-constrained systems where integration, reliability, and temperature stability are critical.
FAQ
What is the maximum sampling rate of the LTC1863LIGN#WTRPBF?
The LTC1863LIGN#WTRPBF guarantees a maximum sampling rate of 175ksps across its full operating temperature range (–40°C to +85°C). This throughput is achieved with a typical conversion time of 3.2µs and acquisition time of 2.01µs, enabling real-time capture of signals up to 87.5kHz bandwidth while maintaining 12-bit resolution and ±4LSB INL accuracy. The LTC1863LIGN#WTRPBF maintains this performance with internal reference and 2.7V supply.
Does the LTC1863LIGN#WTRPBF require an external reference?
No, the LTC1863LIGN#WTRPBF includes a factory-trimmed, temperature-compensated 1.25V internal bandgap reference accessible at the VREF pin (Pin 10), eliminating the need for external reference components in most applications. The REFCOMP pin (Pin 9) provides a buffered 2.5V output derived from VREF. An external reference can be applied to VREF if improved accuracy or drift performance is required, leveraging the built-in 3kΩ series resistor.
How does the LTC1863LIGN#WTRPBF handle differential input configurations?
The LTC1863LIGN#WTRPBF supports true differential inputs via its 8-channel analog multiplexer: CH0/CH1, CH2/CH3, CH4/CH5, and CH6/CH7 form matched differential pairs, with common-mode rejection provided by the internal sample-and-hold and SAR architecture. Configuration is controlled by the 7-bit SDI word, where the SD (single/differential) and COM bits determine whether CH7/COM acts as a dedicated negative input or independent channel. This enables simultaneous differential and single-ended acquisitions in one scan sequence.
Is the LTC1863LIGN#WTRPBF pin-compatible with other members of the LTC1863/LTC1867 family?
Yes, the LTC1863LIGN#WTRPBF is explicitly stated as pin-compatible with the LTC1863 and LTC1867 families per the datasheet. It shares identical pin functions, package (16-lead narrow SSOP), and electrical interface with LTC1863LCGN#PBF, LTC1863LIGN#PBF, LTC1867LIGN#PBF, and others. This allows direct substitution in existing layouts when upgrading to automotive-grade operation (–40°C to +85°C) and AEC-Q100 qualification, without PCB redesign or firmware changes.
What power-saving modes does the LTC1863LIGN#WTRPBF support?
The LTC1863LIGN#WTRPBF supports two hardware-controlled power-saving modes: automatic nap mode and explicit sleep mode. Nap mode activates automatically when CS/CONV remains high after conversion completion, reducing supply current from 750µA to 170µA. Sleep mode is entered by setting the SLP bit in the 7-bit SDI configuration word, dropping current to 0.2µA. Wake-up from sleep requires 80ms stabilization time (t7) before valid conversions resume. Both modes preserve configuration state and require no register reinitialization.
LTC1863LIGN#WTRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 200k
- Number of Inputs:
- 8
- Input Type:
- Differential, Single Ended
- Data Interface:
- SPI
- Configuration:
- MUX-S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 4.75V ~ 5.25V
- Voltage - Supply, Digital:
- 4.75V ~ 5.25V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 16-SSOP
- Mounting Type:
- Surface Mount
- Grade:
- Automotive
- Qualification:
- AEC-Q100
LTC1863LIGN#WTRPBF FAQ
1.How can I place an order for LTC1863LIGN#WTRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1863LIGN#WTRPBF 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 LTC1863LIGN#WTRPBF reliable?
The price and inventory of LTC1863LIGN#WTRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1863LIGN#WTRPBF is usually 5 days.
3.What payment methods are accepted for LTC1863LIGN#WTRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1863LIGN#WTRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1863LIGN#WTRPBF?
LTC1863LIGN#WTRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1863LIGN#WTRPBF 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 LTC1863LIGN#WTRPBF?
For technical support, including LTC1863LIGN#WTRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1863LIGN#WTRPBF requirements.
6.How does Aetrix verify that LTC1863LIGN#WTRPBF is sourced from the original manufacturer or authorized distributors?
All LTC1863LIGN#WTRPBF 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 LTC1863LIGN#WTRPBF meets industry standards.
7.What is the process for return or replacement of LTC1863LIGN#WTRPBF?
All LTC1863LIGN#WTRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1863LIGN#WTRPBF, 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 LTC1863LIGN#WTRPBF part is unused and in its original packaging.
Return procedure for LTC1863LIGN#WTRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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