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Analog Devices Inc. LTC1863LIGN#TRPBF
- Part No.:
- LTC1863LIGN#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
LTC1863LIGN#TRPBF.pdf
- Description:
- IC ADC 12BIT SAR 16SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,789
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Product details
Overview
LTC1863LIGN#TRPBF from Analog Devices is a 12-bit, 175ksps, 8-channel multiplexed 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#TRPBF datasheet, LTC1863LIGN#TRPBF pinout, LTC1863LIGN#TRPBF application, or LTC1863LIGN#TRPBF equivalent, key selection criteria include guaranteed 12-bit no-missing-codes performance, ±1LSB max INL over temperature, automatic nap/sleep power management, SSOP-16 packaging for space-constrained layouts, and AEC-Q100 qualification for automotive-grade reliability.
Technical Context
The LTC1863LIGN#TRPBF implements a capacitive SAR architecture with differential sample-and-hold, enabling simultaneous sampling of true differential pairs (e.g., CH0/CH1) or single-ended inputs referenced to GND or CH7/COM. Its internal 1.25V bandgap reference is curvature-compensated and factory-trimmed to ±10mV accuracy, with REFCOMP providing a buffered 2.5V output.
Conversion is initiated by a rising edge on CS/CONV; the 7-bit configuration word (SD/OS/S1/S0/COM/UNI/SLP) selects channel, polarity, and sleep mode. Timing is internally clocked-conversion time is fixed at 3.2µs (typ), acquisition time is 2.01µs (min), and maximum sampling rate is 175ksps with SCK up to 20MHz.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - guarantees monotonicity and no missing codes across full temperature range (–40°C to +85°C) |
| Sample Rate | 175ksps - enables real-time capture of signals up to 87.5kHz Nyquist bandwidth |
| INL | ±1 LSB max - ensures accurate end-point linearity for precision sensor interfacing |
| Supply Current | 750 µA at 175ksps - supports ultra-low-power operation in battery-powered systems |
| Analog Input Range | 0V to 2.5V (unipolar) or ±1.25V (bipolar) - matches common industrial sensor outputs and op-amp rails |
| Reference | Internal 1.25V ±10mV - eliminates need for external reference unless higher accuracy or drift performance is required |
| Package | 16-pin narrow SSOP - surface-mount compatible with standard PCB assembly processes |
Pinout & Package
Package: 16-lead narrow plastic SSOP (GN), –40°C to +85°C operating temperature range, lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CH0–CH6 (Pins 1–7) | Analog input channels | Single-ended or differential positive inputs; configurable via SD/OS bits in control word |
| CH7/COM (Pin 8) | Channel 7 / common-mode input | Configurable as eighth channel or shared negative input for differential pairs when COM = 1 |
| VDD (Pin 16) | Power supply | 2.7V–3.6V analog/digital supply; requires 10µF + 0.1µF bypassing for stable reference operation |
| GND (Pin 15) | Analog and digital ground | Single-point connection recommended to minimize noise coupling between analog and digital sections |
| CS/CONV (Pin 11) | Conversion start / serial frame enable | Rising edge initiates conversion; falling edge enables serial data output on SDO |
| SCK (Pin 12) | Serial clock input | Synchronizes 12-bit data transfer; supports up to 20MHz clock for high-throughput applications |
| SDO (Pin 13) | Serial data output | Outputs 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 during serial frame; determines channel, mode, and sleep state |
| VREF (Pin 10) | Internal reference output | 1.25V ±10mV source; can be overdriven by external reference via 3kΩ series resistor |
| REFCOMP (Pin 9) | Buffered reference output | 2.5V buffered version of VREF; requires 10µF + 0.1µF bypass for low-noise performance |
Key Features
| Feature | Design Value |
|---|---|
| True differential input architecture | Enables rejection of common-mode noise in noisy industrial environments without external instrumentation amplifiers |
| Automatic nap mode between conversions | Reduces average current to 170µA during idle periods-critical for energy harvesting and long-life battery systems |
| Configurable unipolar/bipolar conversion | Supports both 0–2.5V sensor outputs and ±1.25V differential transducer signals using same hardware layout |
| On-chip 1.25V reference with REFCOMP buffer | Eliminates external reference IC and associated passive components-reducing BOM count and board area |
| AEC-Q100 qualified (-40°C to +85°C) | Validated for automotive subsystems including body electronics and ADAS sensor front-ends requiring extended temperature reliability |
Applications
| Industrial Process Control | High-Speed Data Acquisition |
|---|---|
Use Scenario: Monitoring thermocouple, RTD, and 4–20mA loop outputs in PLC I/O modules. IC Role / Device Role / Timing Role: 8-channel multiplexed ADC digitizing multiple analog sensors with synchronized sampling and SPI readout. Use Value: ±1 LSB INL and 175ksps throughput ensure accurate representation of fast-changing process variables like pressure spikes or valve response. | Use Scenario: Portable oscilloscope front-end capturing transient waveforms in field service tools. IC Role / Device Role / Timing Role: Low-power SAR ADC with automatic nap mode enabling >10-hour battery life while maintaining 175ksps sustained sampling. Use Value: 750µA active current and 0.2µA sleep current extend runtime without compromising resolution or channel count. |
| Battery-Operated Systems | Multiplexed Sensor Networks |
Use Scenario: Wireless environmental sensor node measuring temperature, humidity, and gas concentration. IC Role / Device Role / Timing Role: Central analog acquisition unit interfacing multiple sensors via configurable MUX and transmitting results over low-power MCU SPI. Use Value: Single 2.7V supply operation and integrated reference eliminate need for voltage regulators or external references-reducing system power and component count. | Use Scenario: Structural health monitoring array with distributed strain gauges and accelerometers. IC Role / Device Role / Timing Role: 8-channel differential ADC acquiring synchronized measurements across multiple physical locations. Use Value: True differential inputs and channel-to-channel isolation >100dB at 100kHz suppress crosstalk in dense sensor deployments. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit, multiplexed ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7822U | 12-bit, 200ksps, 4-channel, SPI interface, no internal reference, requires external 2.5V ref | Lower channel count; lacks integrated reference and differential input flexibility | Select when higher sample rate is critical and external reference is already present in design |
| LTC1864LIGN#TRPBF | 16-bit, 175ksps, same pinout and package, but ±3 LSB INL and higher power (1.1mA) | Higher resolution for precision metrology; not drop-in due to increased INL and current draw | Select when 16-bit resolution and 16-bit no-missing-codes are mandatory, accepting higher cost and power |
Compared with ADS7822U and LTC1864LIGN#TRPBF, the LTC1863LIGN#TRPBF delivers optimal balance of channel density, integrated reference, low power, and automotive qualification-making it ideal for cost-sensitive, space-constrained industrial and automotive sensor nodes where 12-bit accuracy suffices.
Availability
LTC1863LIGN#TRPBF is available at Aetrix Electronics and suitable for industrial process control, battery-operated data loggers, and automotive sensor interface applications requiring stable component supply, long-term lifecycle support, and AEC-Q100 compliance.
Supply support for LTC1863LIGN#TRPBF 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. 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 sensor interfacing in harsh environments-including factory automation, vehicle subsystems, and portable instrumentation.
FAQ
What is the guaranteed resolution and INL specification for LTC1863LIGN#TRPBF over its full operating temperature range?
The LTC1863LIGN#TRPBF guarantees 12-bit resolution with no missing codes and ±1 LSB maximum integral nonlinearity (INL) across the full –40°C to +85°C temperature range. This specification is explicitly confirmed in the "CONVERTER CHARACTERISTICS" table of the Rev F datasheet under "l" (full-temperature-range) conditions, ensuring consistent linearity for precision measurement applications regardless of ambient thermal stress.
Does LTC1863LIGN#TRPBF support true differential input pairs, and how is this configured?
Yes, LTC1863LIGN#TRPBF supports true differential inputs (e.g., CH0/CH1, CH2/CH3) via its 8-channel analog multiplexer. Configuration is performed using the 7-bit serial control word: setting SD = 0 and OS = 0 selects even/odd differential pairs, while COM = 1 configures CH7/COM as the common negative input. This is validated in Tables 1 and 2 of the datasheet and the "Analog Input Multiplexer" section.
Can LTC1863LIGN#TRPBF operate from a 2.7V supply while maintaining full 175ksps sample rate and specified AC performance?
Yes, LTC1863LIGN#TRPBF is fully specified at VDD = 2.7V, including 175ksps maximum sampling rate, ±1 LSB INL, 73.1dB SNR, and 73dB S/(N+D) ratio. All dynamic and DC specifications in the "CONVERTER CHARACTERISTICS" and "DYNAMIC ACCURACY" tables are tested and guaranteed at 2.7V, as noted in the test conditions column.
What is the function of the REFCOMP pin on LTC1863LIGN#TRPBF, and what bypassing is required?
The REFCOMP pin on LTC1863LIGN#TRPBF provides a buffered 2.5V output derived from the internal 1.25V reference (VREF × 2). It must be bypassed with a 10µF tantalum (or ceramic) capacitor in parallel with a 0.1µF ceramic capacitor to ground, as specified in the "PIN FUNCTIONS" section and Typical Connection Diagram (Figure 1a). This dual-capacitor network ensures low-noise, stable reference operation during high-speed conversions.
Is LTC1863LIGN#TRPBF pin-compatible with any higher-resolution variants, and what are the trade-offs?
Yes, LTC1863LIGN#TRPBF is pin-compatible with LTC1867LIGN#TRPBF (16-bit, ±3 LSB INL) and LTC1864LIGN#TRPBF (16-bit, ±1 LSB INL), as stated in the "FEATURES" section. Trade-offs include higher supply current (1.1mA vs. 0.75mA), increased cost, and tighter layout requirements for 16-bit accuracy-but identical footprint, timing, and serial interface simplify upgrade paths where resolution is prioritized over power or cost.
LTC1863LIGN#TRPBF 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):
- 175k
- 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:
- 2.7V ~ 3.6V
- Voltage - Supply, Digital:
- 2.7V ~ 3.6V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 16-SSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC1863LIGN#TRPBF FAQ
1.How can I place an order for LTC1863LIGN#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1863LIGN#TRPBF 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#TRPBF reliable?
The price and inventory of LTC1863LIGN#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1863LIGN#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC1863LIGN#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1863LIGN#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1863LIGN#TRPBF?
LTC1863LIGN#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1863LIGN#TRPBF 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#TRPBF?
For technical support, including LTC1863LIGN#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1863LIGN#TRPBF requirements.
6.How does Aetrix verify that LTC1863LIGN#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC1863LIGN#TRPBF 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#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC1863LIGN#TRPBF?
All LTC1863LIGN#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1863LIGN#TRPBF, 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#TRPBF part is unused and in its original packaging.
Return procedure for LTC1863LIGN#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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