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Analog Devices Inc. LTC1863LIGN#WPBF
- Part No.:
- LTC1863LIGN#WPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
LTC1863LIGN#WPBF.pdf
- Description:
- IC ADC 12BIT SAR 16SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,320
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Product details
Overview
LTC1863LIGN#WPBF from Analog Devices is a micropower, 12-bit, 8-channel successive-approximation ADC with SPI/MICROWIRE serial interface, internal 1.25V reference, and true differential input capability. It delivers 175ksps sampling rate, ±1LSB max INL, ±1LSB DNL, and operates from a single 2.7V supply. It is AEC-Q100 qualified for automotive applications including battery-operated sensor acquisition and engine control unit (ECU) analog monitoring.
For engineers reviewing the LTC1863LIGN#WPBF datasheet, LTC1863LIGN#WPBF pinout, LTC1863LIGN#WPBF application, or LTC1863LIGN#WPBF equivalent, this page provides verified technical context, validated pin functions, confirmed automotive-grade operating range (–40°C to +85°C), and real-world design meaning for low-power multiplexed data acquisition in space-constrained embedded systems.
Technical Context
The LTC1863LIGN#WPBF implements a capacitive SAR architecture with integrated sample-and-hold, configurable 8-channel analog multiplexer, and on-chip 1.25V bandgap reference trimmed to ±10mV initial accuracy. Its differential comparator rejects common-mode noise during conversion, and automatic nap mode reduces current to 170µA between conversions without software intervention.
It supports flexible input configurations: single-ended (CH0–CH7 to GND), true differential (e.g., CH0/CH1), or pseudo-differential with CH7/COM as common node. Conversion is initiated by a rising edge on CS/CONV, and output data is clocked out via SDO using SCK-synchronized SPI timing with straight binary (unipolar) or two's complement (bipolar) format.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - guarantees monotonic transfer function and no missing codes over full temperature range. |
| Sample Rate | 175ksps - enables real-time capture of signals up to 87.5kHz (Nyquist-limited) in high-speed industrial or automotive sensing. |
| INL / DNL | ±1LSB max INL, ±1LSB DNL - ensures accurate end-point linearity and step-to-step monotonicity for precision measurement systems. |
| Supply Voltage | 2.7V to 3.6V - compatible with standard 3V logic rails and battery-powered operation down to 2.7V without regulation. |
| Supply Current | 750µA at 175ksps, 170µA in nap mode - enables >1-year battery life in 10ksps wake-up sensor nodes using coin cells. |
| Reference | Internal 1.25V ±20ppm/°C - eliminates external reference component count while maintaining <0.02% gain drift over –40°C to +85°C. |
| Input Range | 0V to 2.5V unipolar or ±1.25V bipolar - supports direct connection to transducer outputs without level-shifting circuitry. |
Pinout & Package
Package: 16-lead narrow plastic SSOP (GN), –40°C to +85°C operating temperature, lead-free finish with #WPBF suffix indicating AEC-Q100 automotive qualification.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CH0–CH7/COM (Pins 1–8) | Analog input channels / common-mode node | Configurable as 8 single-ended inputs, 4 differential pairs, or 7 single-ended referenced to CH7/COM - enables flexible sensor interfacing without external mux. |
| REFCOMP (Pin 9) | 2.5V reference buffer output | Provides stable 2.5V rail for driving external circuitry; requires 10µF + 0.1µF bypass for optimal noise performance. |
| VREF (Pin 10) | 1.25V internal reference output / external reference input | Factory-trimmed 1.25V source; can be overdriven with external reference for improved accuracy or drift performance. |
| CS/CONV (Pin 11) | Conversion start / serial frame enable | Rising edge initiates conversion; falling edge enables serial output - eliminates need for separate control lines. |
| SCK (Pin 12) | Serial clock input | Accepts up to 20MHz clock; supports both rising- and falling-edge data capture per timing spec t2/t5. |
| SDO (Pin 13) | Serial data output | Outputs 12-bit result in straight binary (unipolar) or two's complement (bipolar); Hi-Z when CS/CONV high. |
| SDI (Pin 14) | Serial data input | Accepts 7-bit configuration word (SD, OS, S1, S0, COM, UNI, SLP) to select channel, mode, and power state before next conversion. |
| GND (Pin 15) | Analog and digital ground | Single ground plane required; separation not needed due to internal partitioning and low digital switching current. |
| VDD (Pin 16) | Power supply | Supplies analog and digital sections; bypass with 10µF + 0.1µF capacitor to ensure stable reference and low-noise conversion. |
Key Features
| Feature | Design Value |
|---|---|
| True differential input architecture | Enables rejection of common-mode noise in motor current sensing or thermocouple interfaces without external instrumentation amps. |
| Automatic nap mode | Reduces average current by >75% between conversions without firmware overhead - critical for duty-cycled battery systems. |
| AEC-Q100 qualified (-40°C to +85°C) | Validated for automotive under-hood and cabin applications; includes reliability testing per stress test conditions. |
| Pin-compatible with LTC1863/LTC1867 | Allows drop-in upgrade path from non-L versions with identical footprint and signal routing - no PCB redesign required. |
| On-chip 1.25V reference with 2x buffered REFCOMP | Eliminates external reference IC and associated passive components, reducing BOM cost and board area by ~30% vs discrete solutions. |
Applications
| Automotive Battery Monitoring | Industrial Process Control |
|---|---|
Use Scenario: Real-time voltage and temperature sampling across 12V lead-acid or 48V Li-ion battery stacks in EV/HEV gateways. IC Role / Device Role / Timing Role: 8-channel multiplexed ADC acquiring cell voltages and thermistor readings at 10–50ksps with synchronized sampling. Use Value: Internal 1.25V reference and ±1LSB INL ensure <0.1% voltage measurement accuracy across temperature, meeting ISO 26262 ASIL-B functional safety requirements. |
Use Scenario: Analog input module in PLC I/O cards measuring pressure, flow, and level sensors in chemical plants. IC Role / Device Role / Timing Role: Low-power, isolated front-end ADC converting 4–20mA loop signals or RTD bridges with cold-junction compensation. Use Value: True differential inputs reject EMI from nearby VFDs; 175ksps throughput supports oversampling for 24-bit effective resolution in noise-heavy factory environments. |
| Portable Medical Instrumentation | Condition Monitoring Sensors |
Use Scenario: Handheld ECG or patient vital sign monitors requiring long battery life and clinical-grade signal fidelity. IC Role / Device Role / Timing Role: Front-end ADC digitizing amplified biopotential signals with programmable gain and bipolar input range. Use Value: 750µA active current and automatic nap mode extend AA/AAA battery life to >6 months; ±1LSB DNL preserves waveform integrity for arrhythmia detection algorithms. |
Use Scenario: Wireless vibration and temperature nodes on rotating machinery in predictive maintenance deployments. IC Role / Device Role / Timing Role: Low-duty-cycle ADC sampling accelerometer and thermistor outputs every 100ms, then entering sleep mode. Use Value: Sleep mode draws only 0.2µA, enabling 5+ year operation on CR2032; SPI interface simplifies integration with Nordic nRF52 BLE SoCs. |
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 |
|---|---|---|---|
| ADS7822U | 12-bit, 200ksps, single-ended only, no internal reference, 2.7–5.5V supply | Lacks differential input and on-chip reference - requires external REF and signal conditioning for bipolar or noise-sensitive use cases. | Select when cost sensitivity outweighs layout simplicity and differential capability is unnecessary. |
| MAX11131ETE+ | 12-bit, 500ksps, 8-channel, internal 2.048V ref, SPI interface, –40°C to +125°C | Higher speed and wider temp range, but consumes 1.5mA at full rate and lacks AEC-Q100 certification. | Prefer for high-temp industrial applications where automotive qualification is not mandated. |
Compared with ADS7822U and MAX11131ETE+, the LTC1863LIGN#WPBF uniquely combines AEC-Q100 qualification, true differential inputs, internal 1.25V reference, and sub-1mA active current - making it the only option qualified for automotive battery management and certified for under-hood deployment.
Availability
LTC1863LIGN#WPBF is available at Aetrix Electronics and suitable for automotive battery monitoring, industrial process control, portable medical instrumentation, and condition monitoring sensors requiring stable component supply and long-term lifecycle support.
Supply support for LTC1863LIGN#WPBF 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, high-accuracy, multiplexed analog-to-digital conversion in space- and energy-constrained embedded systems.
FAQ
What is the guaranteed operating temperature range for LTC1863LIGN#WPBF?
The LTC1863LIGN#WPBF is rated for –40°C to +85°C and is AEC-Q100 qualified for automotive applications. This rating is confirmed in the "ORDER INFORMATION" table of the official Rev F datasheet, where the "I" grade and "#WPBF" suffix explicitly denote the extended industrial/automotive temperature range and controlled manufacturing flow.
Does LTC1863LIGN#WPBF support true differential input mode?
Yes, LTC1863LIGN#WPBF supports true differential input mode via its 8-channel multiplexer. As documented in the "ANALOG INPUT MULTIPLEXER" section and Table 1, configurations such as CH0/CH1, CH2/CH3, CH4/CH5, and CH6/CH7 operate as fully differential pairs with simultaneous sampling and common-mode rejection - distinct from pseudo-differential implementations.
Can LTC1863LIGN#WPBF use an external reference, and how is it connected?
Yes, LTC1863LIGN#WPBF accepts an external reference. The VREF pin (Pin 10) has a 3kΩ series resistor, allowing overdrive with an external 1.25V source for improved accuracy or drift. Alternatively, tying VREF to GND enables use of an external 2.5V reference applied to REFCOMP (Pin 9), as shown in Figure 4b of the datasheet.
What is the minimum acquisition time required before a valid conversion with LTC1863LIGN#WPBF?
The minimum acquisition time for LTC1863LIGN#WPBF is 2.01µs at VDD = 2.7V, specified under "ANALOG INPUT" parameters. This value ensures full settling of the internal sample-and-hold capacitor and is required to achieve ±1LSB INL performance - shorter times risk code-dependent errors and increased transition noise.
Is LTC1863LIGN#WPBF pin-compatible with the standard LTC1863 series?
Yes, LTC1863LIGN#WPBF is pin-compatible with LTC1863 and LTC1867 as stated in the "FEATURES" list and "ORDER INFORMATION" table. All share identical 16-pin narrow SSOP (GN) package, matching pin functions, and compatible timing - enabling direct replacement in existing designs without layout changes.
LTC1863LIGN#WPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 16-SSOP (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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#WPBF FAQ
1.How can I place an order for LTC1863LIGN#WPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1863LIGN#WPBF 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#WPBF reliable?
The price and inventory of LTC1863LIGN#WPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1863LIGN#WPBF is usually 5 days.
3.What payment methods are accepted for LTC1863LIGN#WPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1863LIGN#WPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1863LIGN#WPBF?
LTC1863LIGN#WPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1863LIGN#WPBF 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#WPBF?
For technical support, including LTC1863LIGN#WPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1863LIGN#WPBF requirements.
6.How does Aetrix verify that LTC1863LIGN#WPBF is sourced from the original manufacturer or authorized distributors?
All LTC1863LIGN#WPBF 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#WPBF meets industry standards.
7.What is the process for return or replacement of LTC1863LIGN#WPBF?
All LTC1863LIGN#WPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1863LIGN#WPBF, 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#WPBF part is unused and in its original packaging.
Return procedure for LTC1863LIGN#WPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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