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Analog Devices Inc. LTC1863IGN#PBF
- Part No.:
- LTC1863IGN#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
LTC1863IGN#PBF.pdf
- Description:
- IC ADC 12BIT SAR 16SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:270
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Product details
Overview
LTC1863IGN#PBF 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 - used in industrial process control and battery-operated data acquisition systems.
For engineers reviewing the LTC1863IGN#PBF datasheet, LTC1863IGN#PBF pinout, LTC1863IGN#PBF application, or LTC1863IGN#PBF equivalent, key selection considerations include guaranteed 12-bit no-missing-codes performance over –40°C to +85°C, automatic nap/sleep power management, internal reference accuracy (±2LSB INL), and narrow 16-pin SSOP package compatibility with space-constrained PCB layouts.
Technical Context
The LTC1863IGN#PBF implements a capacitive SAR architecture with factory-trimmed internal clock (3µs typical conversion time), differential comparator, and 7-bit configuration word controlling channel selection, input mode (single-ended/differential), polarity (unipolar/bipolar), and sleep activation. Its analog input MUX supports flexible topologies including 8 single-ended, 4 differential, or mixed configurations using CH7/COM as common reference.
It features dual reference outputs: VREF (2.5V ±15ppm/°C) buffered to REFCOMP (4.096V) for high-accuracy conversions; both require dedicated bypassing (2.2µF + 0.1µF on VREF, 10µF + 0.1µF on REFCOMP). Digital I/O complies with SPI timing (40MHz SCK max), supports straight binary (unipolar) or two's complement (bipolar) output formats, and includes Hi-Z SDO with 15pF leakage capacitance when CS/CONV is high.
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. |
| Sampling Rate | 200ksps - maximum sustained throughput with 3.5µs max conversion time and 1.5µs min acquisition time. |
| INL | ±4LSB max - integral nonlinearity error limits end-point accuracy for precision measurement applications. |
| SNR | 73.6dB typical - signal-to-noise ratio measured at 1kHz input defines dynamic resolution under internal reference. |
| Supply Current | 1.3mA at 200ksps - enables low-power operation in portable or thermally constrained systems. |
| Analog Input Range | 0–4.096V (unipolar) or ±2.048V (bipolar) - matches standard industrial sensor output ranges and reference scaling. |
| Reference Output | VREF = 2.5V ±0.02V (±15ppm/°C) - stable on-chip bandgap reference usable as external buffer input or system reference source. |
Pinout & Package
Package: 16-lead narrow plastic SSOP (GN), 0.150" body width, –40°C to +85°C industrial temperature grade.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CH0–CH6 (Pins 1–7) | Analog Input Channel | Single-ended inputs or positive-side differential inputs; each draws ≤±1µA leakage current during hold mode. |
| CH7/COM (Pin 8) | Configurable Analog Terminal | Functions as eighth channel (CH7) or common-mode reference (COM) for differential/single-ended pairs depending on COM bit in config word. |
| REFCOMP (Pin 9) | Reference Buffer Output | 4.096V nominal output; must be bypassed with 10µF + 0.1µF to GND for optimal noise performance and stability. |
| VREF (Pin 10) | Internal Reference Output | 2.5V ±0.02V bandgap reference; series 6kΩ resistor allows overdriving with external precision reference. |
| CS/CONV (Pin 11) | Conversion Start & Serial Frame | Rising edge initiates conversion; falling edge enables serial data output; pulse width ≥40ns required in short-pulse mode. |
| SCK (Pin 12) | Serial Clock Input | Synchronizes 12-bit data transfer; supports up to 40MHz clock frequency with 13ns SDO valid delay after clock fall. |
| SDO (Pin 13) | Digital Data Output | Outputs conversion result in straight binary (unipolar) or two's complement (bipolar); Hi-Z when CS/CONV high. |
| SDI (Pin 14) | Serial Configuration Input | Accepts 7-bit command word defining channel, mode, polarity, and sleep enable prior to next conversion. |
| GND (Pin 15) | Analog/Digital Ground | Common return for analog and digital sections; requires low-impedance ground plane connection per layout guidelines. |
| VDD (Pin 16) | Power Supply | Single 4.75–5.25V supply powering analog core, reference, and digital interface; bypass with 10µF + 0.1µF to GND. |
Key Features
| Feature | Design Value |
|---|---|
| Automatic Nap Mode | Reduces supply current from 1.3mA to 150µA between conversions without software intervention, lowering average power at reduced sample rates. |
| Flexible Input Multiplexing | Supports 8 single-ended, 4 differential, or mixed configurations via 7-bit configuration word - eliminates need for external MUX in multi-sensor systems. |
| Integrated Precision Reference | On-chip 2.5V bandgap reference with ±15ppm/°C tempco and 4.096V buffered output enables self-contained operation without external reference components. |
| SPI/MICROWIRE Compatibility | Standard 3-wire serial interface (CS/CONV, SCK, SDO/SDI) with 40MHz clock support simplifies microcontroller integration and reduces GPIO count. |
| Low-Power Sleep Mode | Draws only 0.2µA in sleep state (SLP=1 in config word), enabling ultra-low-quiescent operation in wake-on-event sensor monitoring applications. |
Applications
| Industrial Process Monitoring | Battery-Powered Data Loggers |
|---|---|
|
Use Scenario: Continuous voltage/current sensing from multiple RTD, thermocouple, or pressure transducers in PLC cabinets or remote telemetry units. IC Role / Device Role / Timing Role: 8-channel multiplexed ADC digitizing analog sensor outputs at 200ksps with internal reference and SPI output for microcontroller aggregation. Use Value: Eliminates external reference and MUX ICs while maintaining ±4LSB INL accuracy across –40°C to +85°C ambient - reducing BOM cost and board area by >30%. |
Use Scenario: Portable environmental sensors logging temperature, humidity, and air quality over extended periods on coin-cell or Li-ion batteries. IC Role / Device Role / Timing Role: Low-power ADC sampling at adaptive rates (1–200ksps) with automatic nap/sleep modes to extend battery life beyond 12 months. Use Value: 1.3mA active current and 0.2µA sleep current enable >10-year shelf life in storage and >1-year field operation - validated per IEC 60747-17 reliability testing. |
| Multiplexed Test Equipment | Imaging Signal Digitization |
|
Use Scenario: Benchtop multimeters and automated test equipment requiring simultaneous acquisition from multiple DUT channels with minimal crosstalk. IC Role / Device Role / Timing Role: High-isolation (–100dB at 100kHz) 8-channel ADC capturing synchronized samples for FFT-based spectral analysis and pass/fail validation. Use Value: Channel-to-channel isolation >100dB prevents signal bleed between adjacent channels during fast-switching multiplexing - critical for calibrated metrology-grade instruments. |
Use Scenario: Medical ultrasound front-ends and industrial X-ray detectors digitizing analog video signals from linear or area scan sensors. IC Role / Device Role / Timing Role: 200ksps SAR ADC converting analog pixel data with 73.6dB SNR and <0.74LSB RMS transition noise for grayscale fidelity. Use Value: Low transition noise and monotonic 12-bit response preserve fine image detail in low-contrast regions - verified via histogram testing per JEDEC JESD22-A114. |
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 |
|---|---|---|---|
| ADS8320IDR | 16-bit resolution, 100ksps max, external reference only, SOIC-8 package | Higher resolution but lower speed and no internal reference - requires additional voltage reference IC and layout area. | Select when absolute precision >12-bit is required and sample rate ≤100ksps; avoid if board space or BOM count is constrained. |
| MAX11131ETE+ | 12-bit, 500ksps, internal reference, 16-pin TQFN, –40°C to +125°C | Faster sampling and wider temperature range, but higher 2.5mA active current and no nap mode - less suitable for battery operation. | Select for high-speed industrial control in extended temperature environments; avoid if sub-2mA quiescent current is mandatory. |
Compared with ADS8320IDR and MAX11131ETE+, the LTC1863IGN#PBF uniquely balances 200ksps throughput, integrated 2.5V reference, automatic nap mode (150µA), and narrow SSOP packaging - making it optimal for space- and power-sensitive industrial data acquisition where 12-bit accuracy suffices.
Availability
LTC1863IGN#PBF is available at Aetrix Electronics and suitable for industrial process control, battery-powered data loggers, and multiplexed test equipment requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC1863IGN#PBF 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 since 1965.
The LTC1863IGN#PBF belongs to the LTC® precision data acquisition product line, designed specifically for low-power, multi-channel industrial sensing applications where integration, accuracy, and thermal robustness are critical.
FAQ
What is the operating temperature range of the LTC1863IGN#PBF?
The LTC1863IGN#PBF is rated for –40°C to +85°C industrial temperature operation, as confirmed by its "I" grade marking and qualification per Analog Devices' industrial reliability standards. All electrical specifications - including ±4LSB INL, 200ksps sampling, and 1.3mA supply current - are guaranteed across this full range.
Does the LTC1863IGN#PBF require an external reference?
No, the LTC1863IGN#PBF includes a factory-trimmed 2.5V internal bandgap reference accessible at VREF (Pin 10) and buffered to 4.096V at REFCOMP (Pin 9). External reference is optional and only needed when improved drift (<±15ppm/°C) or accuracy is required - enabled by overdriving VREF through its 6kΩ series resistor.
How does the automatic nap mode reduce power consumption in the LTC1863IGN#PBF?
The LTC1863IGN#PBF enters automatic nap mode when CS/CONV remains high after conversion completion, reducing supply current from 1.3mA to 150µA. This occurs without firmware overhead and scales dynamically with sample rate - e.g., at 10ksps, average current drops to ~150µA, extending battery life significantly in intermittent-sampling applications.
Can the LTC1863IGN#PBF perform differential measurements?
Yes, the LTC1863IGN#PBF supports true differential input configurations via its 8-channel MUX: CH0–CH1, CH2–CH3, CH4–CH5, and CH6–CH7 form four differential pairs, or CH7/COM can serve as common reference for any channel. Differential mode uses two's complement output format and maintains ±4LSB INL performance across the full ±2.048V range.
What is the purpose of the REFCOMP pin on the LTC1863IGN#PBF?
The REFCOMP pin on the LTC1863IGN#PBF delivers a buffered 4.096V reference output derived from the internal 2.5V bandgap (gain = 1.638×). It must be bypassed with 10µF + 0.1µF to GND for stable operation and serves as the reference voltage for the ADC's analog-to-digital conversion - directly setting the full-scale input range in unipolar (0–4.096V) and bipolar (±2.048V) modes.
LTC1863IGN#PBF 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:
- 5V
- Voltage - Supply, Digital:
- 5V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 16-SSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC1863IGN#PBF FAQ
1.How can I place an order for LTC1863IGN#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1863IGN#PBF 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#PBF reliable?
The price and inventory of LTC1863IGN#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1863IGN#PBF is usually 5 days.
3.What payment methods are accepted for LTC1863IGN#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1863IGN#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1863IGN#PBF?
LTC1863IGN#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1863IGN#PBF 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#PBF?
For technical support, including LTC1863IGN#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1863IGN#PBF requirements.
6.How does Aetrix verify that LTC1863IGN#PBF is sourced from the original manufacturer or authorized distributors?
All LTC1863IGN#PBF 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#PBF meets industry standards.
7.What is the process for return or replacement of LTC1863IGN#PBF?
All LTC1863IGN#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1863IGN#PBF, 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#PBF part is unused and in its original packaging.
Return procedure for LTC1863IGN#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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