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Analog Devices Inc. LTC1863IGN#WTRPBF
- Part No.:
- LTC1863IGN#WTRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
LTC1863IGN#WTRPBF.pdf
- Description:
- IC ADC 12BIT SAR 16SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,708
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Product details
Overview
LTC1863IGN#WTRPBF from Analog Devices is a 12-bit, 8-channel, 200ksps successive approximation ADC with integrated 2.5V reference, SPI/MICROWIRE serial 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 - ideal for industrial process control and battery-operated data acquisition systems.
For engineers reviewing the LTC1863IGN#WTRPBF datasheet, LTC1863IGN#WTRPBF pinout, LTC1863IGN#WTRPBF application, or LTC1863IGN#WTRPBF equivalent, key selection considerations include guaranteed 12-bit no-missing-codes performance over –40°C to +85°C, automotive-grade AEC-Q100 qualification, automatic nap/sleep power management, and SSOP-16 package compatibility with LTC1867 series.
Technical Context
The LTC1863IGN#WTRPBF implements a capacitive SAR architecture with factory-trimmed internal clock (3µs typical conversion time), differential comparator, and 12-bit DAC array. Its analog input multiplexer accepts 7-bit configuration words to select channel pairs (e.g., CH0/CH1 differential) or single-ended inputs referenced to GND or CH7/COM.
Digital interface uses CS/CONV rising edge to initiate conversion, followed by SCK-synchronized readout on SDO in straight binary (unipolar) or two's complement (bipolar) format. Internal reference includes VREF (2.5V ±15ppm/°C) and buffered REFCOMP (4.096V) with dedicated bypassing requirements (2.2µF + 0.1µF on VREF; 10µF + 0.1µF on REFCOMP).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - guarantees monotonic transfer function and no missing codes across –40°C to +85°C operating range. |
| Sample Rate | 200ksps - enables real-time capture of signals up to 1.25MHz full-power bandwidth with guaranteed timing. |
| INL | ±1 LSB max (unipolar) - ensures <0.025% end-point linearity error for precision sensor interfacing. |
| SNR | 73.6dB typical - supports >12-bit effective resolution for low-noise measurement applications. |
| Supply Current | 1.3mA at 200ksps; 150µA in nap mode - enables ultra-low-power operation in portable or energy-constrained systems. |
| Analog Input Range | 0–4.096V (unipolar) or ±2.048V (bipolar) - matches standard industrial voltage levels and simplifies signal conditioning. |
| Reference | Internal 2.5V bandgap (±15ppm/°C tempco) with 4.096V buffered output - eliminates external reference component count while maintaining accuracy. |
Pinout & Package
Package: 16-pin narrow plastic SSOP (GN), 0.15mm lead pitch, –40°C to +85°C industrial temperature grade, AEC-Q100 qualified for automotive use.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CH0–CH6 (Pins 1–7) | Analog Input Channels | Single-ended or differential "+" inputs; support programmable pairing (e.g., CH0/CH1) via SDI configuration word. |
| CH7/COM (Pin 8) | Configurable Channel / Common Input | Functions as eighth channel (CH7) when COM=0; serves as common "–" input for all channels when COM=1. |
| REFCOMP (Pin 9) | Buffered Reference Output | 4.096V output requiring 10µF + 0.1µF bypass; used as ADC reference input; tied to GND to enable external reference mode. |
| VREF (Pin 10) | Internal Reference Tap | 2.5V bandgap output with 6kΩ series resistor; can be overdriven by external reference for improved drift/accuracy. |
| CS/CONV (Pin 11) | Conversion Start / Serial Frame | Rising edge initiates conversion; falling edge enables serial data output; controls nap/sleep entry timing. |
| SCK (Pin 12) | Serial Clock Input | Accepts up to 40MHz clock; synchronizes 12-bit data shift-out on SDO and config word shift-in on SDI. |
| SDO (Pin 13) | Serial Data Output | Outputs conversion result in straight binary (unipolar) or two's complement (bipolar); high-impedance when CS/CONV high. |
| SDI (Pin 14) | Serial Data Input | Accepts 7-bit configuration word (SD OS S1 S0 COM UNI SLP) to set channel, polarity, and power mode before each conversion. |
| GND (Pin 15) | Analog/Digital Ground | Common return for analog inputs, reference, and digital I/O; requires low-impedance ground plane per layout guidelines. |
| VDD (Pin 16) | Power Supply | Single 4.75–5.25V supply powering analog core, reference, and digital interface; requires 10µF + 0.1µF bypass. |
Key Features
| Feature | Design Value |
|---|---|
| AEC-Q100 Qualified Automotive Grade | Validated for –40°C to +85°C operation with controlled manufacturing flow - suitable for under-hood and ADAS sensor nodes. |
| Configurable 8-Channel MUX | Supports mixed single-ended/differential inputs via software-selectable COM bit - reduces external multiplexer IC count and PCB area. |
| Automatic Nap Mode | Reduces current from 1.3mA to 150µA between conversions without firmware intervention - extends battery life in intermittent sampling systems. |
| Integrated Precision Reference | 2.5V bandgap (±15ppm/°C) + 4.096V buffer eliminates need for external reference IC while maintaining 12-bit linearity spec. |
| SPI/MICROWIRE-Compatible Interface | Standard 3-wire serial protocol with CS/CONV framing - enables direct connection to microcontrollers without level-shifting or glue logic. |
Applications
| Industrial Process Monitoring | Battery-Powered Sensor Node |
|---|---|
|
Use Scenario: Continuous monitoring of temperature, pressure, and flow sensors in PLC I/O modules. IC Role / Device Role / Timing Role: 12-bit ADC digitizing 8 analog sensor outputs at 10–100ksps with programmable gain and bipolar range support. Use Value: Eliminates external reference and multiplexer components; automotive qualification enables reuse in harsh-environment field devices. |
Use Scenario: Wireless environmental sensor collecting temperature, humidity, and gas concentration data on coin-cell power. IC Role / Device Role / Timing Role: Low-power ADC performing burst-mode sampling every 5 seconds, entering sleep mode between acquisitions. Use Value: 150µA nap current and 0.2µA sleep current extend operational lifetime beyond 5 years on CR2032 battery. |
| Multiplexed Data Acquisition System | Automotive Diagnostic Interface |
|
Use Scenario: Modular DAQ unit acquiring synchronized voltage/current readings from motor drive feedback circuits. IC Role / Device Role / Timing Role: Simultaneous sampling of differential current shunt and single-ended bus voltage with channel-to-channel isolation >100dB. Use Value: On-chip MUX eliminates timing skew between channels; 1.5µs acquisition time ensures accurate capture of fast transients. |
Use Scenario: OBD-II diagnostic tool reading analog signals from engine coolant temperature, throttle position, and oxygen sensors. IC Role / Device Role / Timing Role: AEC-Q100 qualified ADC interfacing with legacy analog vehicle sensors using unipolar 0–5V range. Use Value: Guaranteed –40°C to +85°C operation and automotive reliability reporting meet OEM Tier-1 compliance requirements. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit multichannel ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| LTC1867IGN#WTRPBF | 16-bit resolution, ±2LSB INL, 89dB SNR vs 12-bit/73.6dB of LTC1863IGN#WTRPBF; identical pinout, package, and interface. | Required where higher dynamic range is critical (e.g., vibration analysis, audio test equipment); not drop-in due to resolution-dependent firmware scaling. | Select LTC1867IGN#WTRPBF when system-level noise floor demands >14-bit ENOB and cost premium is acceptable. |
| AD7928BRUZ | 12-bit, 8-channel, 1MSPS SAR ADC; no internal reference; requires external 2.5V ref; SPI-compatible but different timing and control register map. | Used in high-speed industrial DAQ where throughput >200ksps is needed; lacks automotive qualification and integrated reference. | Choose AD7928BRUZ only if higher sample rate justifies added BOM complexity and qualification effort. |
Compared with LTC1867IGN#WTRPBF, the LTC1863IGN#WTRPBF trades resolution and SNR for lower power and cost while retaining identical automotive qualification and footprint; versus AD7928BRUZ, it delivers simplified design through integrated reference and guaranteed nap-mode current, at the expense of maximum sample rate.
Availability
LTC1863IGN#WTRPBF is available at Aetrix Electronics and suitable for industrial process control, battery-operated sensor networks, and automotive diagnostic interfaces requiring stable component supply with AEC-Q100 compliance and long-term lifecycle support.
Supply support for LTC1863IGN#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 LTC1863IGN#WTRPBF belongs to the LTC® precision ADC family designed for space-constrained, low-power, and mission-critical applications where integration, reliability, and guaranteed specifications across temperature are essential.
FAQ
What is the operating temperature range of the LTC1863IGN#WTRPBF?
The LTC1863IGN#WTRPBF is rated for –40°C to +85°C operation and is AEC-Q100 qualified for automotive applications. This extended industrial temperature range is confirmed in the manufacturer's order information table and absolute maximum ratings section, with thermal resistance θJA = 95°C/W and TJMAX = 110°C.
Does the LTC1863IGN#WTRPBF require an external reference?
No, the LTC1863IGN#WTRPBF includes a factory-trimmed 2.5V internal bandgap reference with ±15ppm/°C tempco and buffered 4.096V output at REFCOMP. External reference is optional - achieved by tying VREF to GND and driving REFCOMP with a precision 4.096V source - but not required for standard operation.
How does the nap mode function in the LTC1863IGN#WTRPBF?
The LTC1863IGN#WTRPBF enters automatic nap mode when CS/CONV remains high after conversion completion, reducing supply current from 1.3mA to 150µA. During nap mode, VREF and REFCOMP remain active, enabling rapid resumption of sampling without reference stabilization delay - critical for duty-cycled sensor systems.
Can the LTC1863IGN#WTRPBF perform differential measurements?
Yes, the LTC1863IGN#WTRPBF supports true differential input configurations via its 8-channel MUX. Setting the SD (single/differential) bit and COM bit in the 7-bit SDI configuration word enables differential pairs such as CH0/CH1 or CH0/CH7/COM, with simultaneous sampling and >100dB channel-to-channel isolation at 100kHz.
What package type is used for the LTC1863IGN#WTRPBF?
The LTC1863IGN#WTRPBF is housed in a 16-lead narrow plastic SSOP (GN) package with 0.15mm lead pitch. This compact surface-mount package is explicitly listed in the order information table and pin configuration diagram, and is compatible with standard reflow soldering profiles per JEDEC J-STD-020.
LTC1863IGN#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
LTC1863IGN#WTRPBF FAQ
1.How can I place an order for LTC1863IGN#WTRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1863IGN#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 LTC1863IGN#WTRPBF reliable?
The price and inventory of LTC1863IGN#WTRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1863IGN#WTRPBF is usually 5 days.
3.What payment methods are accepted for LTC1863IGN#WTRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1863IGN#WTRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1863IGN#WTRPBF?
LTC1863IGN#WTRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1863IGN#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 LTC1863IGN#WTRPBF?
For technical support, including LTC1863IGN#WTRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1863IGN#WTRPBF requirements.
6.How does Aetrix verify that LTC1863IGN#WTRPBF is sourced from the original manufacturer or authorized distributors?
All LTC1863IGN#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 LTC1863IGN#WTRPBF meets industry standards.
7.What is the process for return or replacement of LTC1863IGN#WTRPBF?
All LTC1863IGN#WTRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1863IGN#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 LTC1863IGN#WTRPBF part is unused and in its original packaging.
Return procedure for LTC1863IGN#WTRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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