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Analog Devices Inc. LTC1863IGN#WPBF
- Part No.:
- LTC1863IGN#WPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
LTC1863IGN#WPBF.pdf
- Description:
- IC ADC 12BIT SAR 16SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,662
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Product details
Overview
LTC1863IGN#WPBF from Analog Devices is a 12-bit, 8-channel, 200ksps successive-approximation ADC with integrated 2.5V reference, SPI/MICROWIRE interface, and configurable single-ended/differential input multiplexer. It operates from a single 5V supply, draws 1.3mA at full speed, and supports unipolar (0–4.096V) or bipolar (±2.048V) conversion modes - used in industrial process control and battery-operated data acquisition systems.
For engineers reviewing the LTC1863IGN#WPBF datasheet, LTC1863IGN#WPBF pinout, LTC1863IGN#WPBF application, or LTC1863IGN#WPBF equivalent, key selection criteria include guaranteed 12-bit no-missing-codes performance over –40°C to +85°C, ±1LSB integral nonlinearity, 73.6dB SNR, automatic nap mode power management, and automotive-grade AEC-Q100 qualification.
Technical Context
The LTC1863IGN#WPBF implements a capacitive SAR architecture with factory-trimmed internal clock (typ. 3µs conversion time), differential comparator, and 12-bit DAC array. Its analog input mux supports dynamic reconfiguration via 7-bit serial command word including SINGLE/DIFFERENTIAL, UNIPOLAR/BIPOLAR, COM/CH7 mode, and SLEEP control bits.
Digital interface uses CS/CONV-rising-edge conversion trigger and SPI-compatible SDO/SDI/SCK timing with 40MHz max SCK frequency. Internal reference chain includes 2.5V bandgap (±15ppm/°C tempco) buffered to 4.096V at REFCOMP, both externally overdrivable for improved accuracy.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - guarantees monotonic transfer function and no missing codes across full temperature range. |
| Sample Rate | 200ksps - enables real-time capture of signals up to 1.25MHz full-power bandwidth. |
| INL | ±1 LSB (unipolar) - ensures <0.025% end-point linearity error for precision sensor interfacing. |
| SNR | 73.6 dB - supports 12.3 effective bits under 1kHz input, critical for low-noise measurement systems. |
| Supply Current | 1.3 mA at 200ksps - enables operation in power-constrained embedded systems without active thermal management. |
| Operating Temp | –40°C to +85°C - qualified per AEC-Q100 Grade 3, suitable for under-hood automotive electronics. |
| Reference | Internal 2.5V ±15ppm/°C - eliminates external reference component count while maintaining drift stability. |
Pinout & Package
Package: 16-pin narrow SSOP (GN), 0.15mm lead pitch, 5.0mm × 6.2mm body size, RoHS-compliant lead-free finish (#WPBF).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CH0–CH6 (Pins 1–7) | Analog Input Channel | Single-ended or differential "+" inputs; configurable via SDI command word. |
| CH7/COM (Pin 8) | Configurable Analog Terminal | Acts as CH7 (single-ended) or common "–" input for differential pairs when COM bit = 1. |
| REFCOMP (Pin 9) | 4.096V Reference Buffer Output | Provides stable 4.096V for unipolar full-scale; requires 10µF + 0.1µF bypass for noise suppression. |
| VREF (Pin 10) | 2.5V Bandgap Reference Output | Factory-trimmed 2.5V ±15ppm/°C source; series 6kΩ resistor allows external override. |
| CS/CONV (Pin 11) | Conversion Start & Serial Frame | Rising edge initiates conversion; low state enables SDO output and serial readback. |
| SCK (Pin 12) | Serial Clock Input | Synchronizes 12-bit data shift-out on SDO and config word shift-in on SDI (max 40MHz). |
| SDO (Pin 13) | Digital Data Output | Outputs straight binary (unipolar) or two's complement (bipolar); Hi-Z when CS/CONV high. |
| SDI (Pin 14) | Digital Data Input | Accepts 7-bit configuration word (SD/OS/S1/S0/COM/UNI/SLP) before each conversion. |
| GND (Pin 15) | Analog & Digital Ground | Common return for VDD, analog inputs, and reference circuitry; requires solid ground plane. |
| VDD (Pin 16) | 5V Power Supply | Single 4.75–5.25V rail powers analog core, digital logic, and internal reference; bypass with 10µF + 0.1µF. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Automotive Qualification | Validated for –40°C to +85°C operation with controlled manufacturing flow - enables use in safety-critical vehicle subsystems. |
| Automatic Nap Mode | Reduces current from 1.3mA to 150µA between conversions - cuts average power by >85% at 10ksps sampling. |
| Configurable Input Mux | Supports 8 single-ended, 4 differential, or mixed-mode channel assignments via software-selectable command word. |
| On-Chip Precision Reference | 2.5V ±15ppm/°C bandgap + 4.096V buffer eliminates need for external reference IC in most industrial applications. |
| Low-Leakage Analog Inputs | ±1µA max input leakage enables direct connection to high-impedance sensors without signal degradation. |
Applications
| Industrial Process Monitoring | Battery-Powered Sensor Node |
|---|---|
Use Scenario: Continuous voltage/current monitoring of PLC I/O modules in factory automation cabinets. IC Role / Device Role / Timing Role: 8-channel multiplexed ADC digitizing thermocouple, RTD, and 4–20mA loop signals at 10–50ksps rates. Use Value: Single-supply 5V operation and 1.3mA active current reduce system-level power budget and thermal design complexity. | Use Scenario: Wireless environmental sensor node logging temperature, humidity, and pressure over multi-year battery life. IC Role / Device Role / Timing Role: Low-power ADC acquiring conditioned analog outputs from MEMS sensors during periodic wake-up bursts. Use Value: Automatic nap mode (150µA) and sleep mode (0.2µA) extend CR2032 battery life beyond 3 years at 1Hz sampling. |
| Multiplexed Data Acquisition | Automotive Onboard Diagnostics |
Use Scenario: Modular test equipment capturing synchronized waveforms from multiple transducers in vibration analysis rigs. IC Role / Device Role / Timing Role: High-fidelity 200ksps sampling with 73.6dB SNR and 1.25MHz full-power bandwidth for transient signal capture. Use Value: Differential input support and >100dB channel-to-channel isolation prevent crosstalk in dense multi-signal environments. | Use Scenario: Engine control unit monitoring knock sensor, MAP, and throttle position signals in harsh under-hood conditions. IC Role / Device Role / Timing Role: AEC-Q100-qualified ADC performing real-time analog sensing with guaranteed parametric performance at –40°C to +85°C. Use Value: Integrated 2.5V reference and robust ESD tolerance (100mA input clamp) eliminate external components and improve field reliability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS8325IPW | 16-bit resolution, 100ksps, SPI interface, external reference only | Higher resolution but lower speed and no internal reference - requires additional reference IC and layout area | Select when 16-bit precision outweighs speed and BOM simplicity requirements |
| LTC1867IGN#WPBF | 16-bit resolution, same package, identical pinout and timing, ±2LSB INL | Direct drop-in upgrade path for higher-resolution measurements without PCB change | Choose for seamless migration where 12-bit quantization noise limits system accuracy |
Compared with ADS8325IPW, LTC1863IGN#WPBF offers integrated reference and faster throughput but lower resolution; versus LTC1867IGN#WPBF, it trades 4 bits of resolution for lower cost, reduced digital processing load, and smaller firmware footprint in 12-bit-limited systems.
Availability
LTC1863IGN#WPBF is available at Aetrix Electronics and suitable for industrial process control, battery-powered sensor nodes, and automotive onboard diagnostics requiring stable component supply across extended temperature ranges.
Supply support for LTC1863IGN#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 LTC1863IGN#WPBF belongs to the LTC® precision data acquisition family, designed specifically for space-constrained, low-power, high-reliability applications demanding integrated references and automotive-grade qualification.
FAQ
What is the maximum sampling rate supported by the LTC1863IGN#WPBF?
The LTC1863IGN#WPBF supports a guaranteed maximum sampling rate of 200ksps across its full operating temperature range (–40°C to +85°C). This enables accurate digitization of signals with up to 1.25MHz full-power bandwidth. The internal SAR clock is factory-trimmed to achieve typical conversion time of 3µs, with worst-case 3.5µs over temperature - ensuring deterministic timing for real-time control loops and data acquisition systems using the LTC1863IGN#WPBF.
Does the LTC1863IGN#WPBF require an external reference voltage?
No, the LTC1863IGN#WPBF includes a fully integrated, temperature-compensated 2.5V bandgap reference with ±15ppm/°C drift and 2.48V–2.52V initial accuracy. It also provides a buffered 4.096V output at REFCOMP for unipolar full-scale scaling. External reference is optional - only needed when tighter initial accuracy (<±0.1%) or lower drift (<5ppm/°C) is required. The LTC1863IGN#WPBF's internal reference eliminates BOM cost and board space typically consumed by discrete reference ICs.
How does the LTC1863IGN#WPBF manage power in low-duty-cycle applications?
The LTC1863IGN#WPBF employs two power-saving modes: automatic nap mode (150µA) activates between conversions when CS/CONV remains high, and sleep mode (0.2µA) engages when the SLP bit is set in the configuration word. Both modes retain register state and reference biasing, enabling fast wake-up (60ms from sleep). This dual-stage power management makes the LTC1863IGN#WPBF ideal for battery-operated systems where average current - not just peak current - determines operational lifetime.
Can the LTC1863IGN#WPBF interface directly with a microcontroller SPI port?
Yes, the LTC1863IGN#WPBF uses standard SPI/MICROWIRE-compatible timing with CS/CONV as chip select, SCK as clock, SDI as MOSI, and SDO as MISO. It supports 40MHz max SCK frequency, 12-bit data frames, and both rising- and falling-edge capture. No level-shifting is required for 5V-tolerant MCUs; for 3.3V MCUs, ensure VIL/VIL thresholds (0.8V/2.4V) are met. The LTC1863IGN#WPBF's straightforward protocol and lack of complex initialization sequences simplify firmware integration compared to multi-byte command protocols.
What is the significance of the #WPBF suffix in LTC1863IGN#WPBF?
According to Analog Devices' ordering nomenclature, the #WPBF suffix indicates an automotive-grade version: W = AEC-Q100 qualified, P = lead-free (Pb-free), B = tape-and-reel packaging, F = RoHS-compliant finish. This distinguishes LTC1863IGN#WPBF from commercial-grade variants like #PBF (no AEC-Q100) and confirms it meets stringent automotive reliability, traceability, and manufacturing control requirements - making it suitable for use in engine control, ADAS, and infotainment systems where functional safety and long-term supply continuity are mandatory. The LTC1863IGN#WPBF is the only variant approved for automotive applications.
LTC1863IGN#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
LTC1863IGN#WPBF FAQ
1.How can I place an order for LTC1863IGN#WPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1863IGN#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 LTC1863IGN#WPBF reliable?
The price and inventory of LTC1863IGN#WPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1863IGN#WPBF is usually 5 days.
3.What payment methods are accepted for LTC1863IGN#WPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1863IGN#WPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1863IGN#WPBF?
LTC1863IGN#WPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1863IGN#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 LTC1863IGN#WPBF?
For technical support, including LTC1863IGN#WPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1863IGN#WPBF requirements.
6.How does Aetrix verify that LTC1863IGN#WPBF is sourced from the original manufacturer or authorized distributors?
All LTC1863IGN#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 LTC1863IGN#WPBF meets industry standards.
7.What is the process for return or replacement of LTC1863IGN#WPBF?
All LTC1863IGN#WPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1863IGN#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 LTC1863IGN#WPBF part is unused and in its original packaging.
Return procedure for LTC1863IGN#WPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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