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Analog Devices Inc. LTC1863CGN#PBF
- Part No.:
- LTC1863CGN#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
LTC1863CGN#PBF.pdf
- Description:
- IC ADC 12BIT SAR 16SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:5,938
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Product details
Overview
LTC1863CGN#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 targets precision data acquisition in industrial control and battery-powered systems.
For engineers reviewing the LTC1863CGN#PBF datasheet, LTC1863CGN#PBF pinout, LTC1863CGN#PBF application, or LTC1863CGN#PBF equivalent, key selection criteria include guaranteed 12-bit no-missing-codes performance, ±1LSB max INL over temperature, 16-pin narrow SSOP package compatibility, and support for unipolar (0–4.096V) or bipolar (±2.048V) conversion modes.
Technical Context
The LTC1863CGN#PBF implements a capacitive SAR architecture with factory-trimmed internal clock (typ. 3µs conversion time), automatic nap mode between conversions, and dual-function CS/CONV pin for both conversion initiation and serial frame synchronization. Its analog input MUX supports dynamic reconfiguration via 7-bit command word including SINGLE/DIFFERENTIAL, UNIPOLAR/BIPOLAR, and COM bit control.
Internal reference circuitry delivers 2.5V at VREF (±15ppm/°C tempco) and 4.096V at REFCOMP, both requiring dedicated bypassing (2.2µF + 0.1µF on VREF; 10µF + 0.1µF on REFCOMP). Digital I/O complies with 5V logic levels (VIH ≥ 2.4V, VIL ≤ 0.8V) and supports up to 40MHz SCK frequency with defined setup/hold timing for SDI and SDO.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - guarantees monotonic transfer function and no missing codes across full temperature range (0°C to 70°C). |
| Sampling Rate | 200ksps - enables real-time capture of signals up to 100kHz Nyquist bandwidth with guaranteed throughput. |
| INL Error | ±1 LSB max - ensures absolute accuracy within ±0.024% of full-scale range for calibration-sensitive applications. |
| Signal-to-Noise Ratio | 73.6 dB typical - defines effective resolution of ~12.3 bits under 1kHz input, critical for low-noise sensor digitization. |
| Supply Current | 1.3 mA at 200ksps - enables low-power operation in portable instrumentation without external power management. |
| Analog Input Range | 0–4.096 V (unipolar) or ±2.048 V (bipolar) - matches standard industrial voltage ranges and eliminates need for external level-shifting. |
| Reference Output | 2.5 V at VREF, 4.096 V at REFCOMP - provides stable, buffered reference for high-accuracy measurements without external components. |
Pinout & Package
Package: 16-lead narrow plastic SSOP (GN package), 0.15mm lead pitch, 5.0mm × 6.2mm body size, RoHS-compliant lead-free finish.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CH0–CH7/COM (Pins 1–8) | Analog input channels / common terminal | Configurable as eight single-ended inputs or four differential pairs; CH7/COM serves as selectable common reference or independent channel. |
| REFCOMP (Pin 9) | Reference buffer output | Provides 4.096V buffered reference; requires 10µF + 0.1µF bypass to GND for noise suppression and stability. |
| VREF (Pin 10) | Internal 2.5V reference output | Factory-trimmed bandgap reference; can be overdriven externally via 6kΩ series resistor for improved accuracy or drift. |
| CS/CONV (Pin 11) | Conversion start / serial frame enable | Rising edge initiates conversion; low state enables serial data output on SDO and accepts configuration word on SDI. |
| SCK (Pin 12) | Serial clock input | Synchronizes 12-bit data transfer; supports up to 40MHz clock rate with defined t5/t6 timing margins. |
| SDO (Pin 13) | Digital data output | Outputs conversion result in straight binary (unipolar) or two's complement (bipolar) format after CS/CONV goes low. |
| SDI (Pin 14) | Digital data input | Accepts 7-bit configuration word (SD, OS, S1, S0, COM, UNI, SLP) to select channel, mode, and power state. |
| GND (Pin 15) | Analog and digital ground | Single-point return for all analog and digital currents; must connect to low-impedance ground plane per layout guidelines. |
| VDD (Pin 16) | Power supply | Single 4.75–5.25V supply powers analog core, reference, and digital interface; requires 10µF + 0.1µF local bypass. |
Key Features
| Feature | Design Value |
|---|---|
| 12-bit no-missing-codes performance | Guaranteed over 0°C to 70°C temperature range - eliminates code ambiguity in closed-loop control and metrology. |
| Configurable 8-channel analog MUX | Supports mixed single-ended/differential configurations via software-selectable COM bit - reduces external component count in multi-sensor systems. |
| Integrated 2.5V/4.096V reference system | Eliminates need for external reference ICs and associated trimming; REFCOMP output enables precise unipolar full-scale scaling. |
| Automatic nap mode | Reduces current from 1.3mA to 150µA between conversions - extends battery life in intermittent-sampling applications without firmware overhead. |
| SPI/MICROWIRE-compatible serial interface | Uses standard 3-wire protocol with CS/CONV framing - simplifies host MCU integration and avoids proprietary driver development. |
Applications
| Industrial Process Monitoring | Battery-Powered Data Loggers |
|---|---|
|
Use Scenario: Continuous monitoring of temperature, pressure, and flow sensors in PLC I/O modules. IC Role / Device Role / Timing Role: 8-channel multiplexed ADC digitizing analog sensor outputs at 200ksps with ±1LSB INL for calibrated measurement accuracy. Use Value: Single-chip solution replaces discrete op-amp + reference + ADC combinations, reducing BOM cost and board area by >40%. |
Use Scenario: Long-term environmental sensing in remote field deployments powered by coin-cell or Li-SOCl₂ batteries. IC Role / Device Role / Timing Role: Low-power 12-bit ADC operating in nap mode between triggered acquisitions to minimize average current draw. Use Value: 150µA nap current and 0.2µA sleep current extend battery life to >5 years in 1-sample-per-minute logging profiles. |
| Multiplexed Test Equipment | Imaging Signal Digitization |
|
Use Scenario: Channel-scanning in handheld multimeters and automated test fixtures requiring fast settling and repeatable readings. IC Role / Device Role / Timing Role: SAR ADC with 1.5µs acquisition time and 3µs conversion enabling <5µs per channel cycle time across 8 inputs. Use Value: Eliminates need for external sample-and-hold circuits while maintaining <0.025% gain error match across channels. |
Use Scenario: Digitizing analog video or line-scan camera outputs in medical or industrial imaging subsystems. IC Role / Device Role / Timing Role: High-speed 200ksps ADC capturing 12-bit pixel intensity data with 73.6dB SNR for grayscale fidelity. Use Value: Internal reference and differential input capability suppress common-mode noise from long coaxial sensor cables. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7822U | 12-bit, 200ksps, SPI interface, but no internal reference - requires external 2.5V reference and separate REF pin. | Higher external component count; less suitable for space-constrained designs where reference integration is critical. | Select when external reference flexibility (e.g., 3.3V or adjustable VREF) is required, and board area permits additional decoupling components. |
| MAX11131ETE+ | 12-bit, 500ksps, internal reference, but uses QFN-16 package (3mm × 3mm) - smaller footprint but different thermal and routing constraints. | Higher sampling rate enables oversampling for noise reduction, but QFN requires reflow-compatible layout and lacks SSOP lead visibility for inspection. | Select when higher throughput or compact packaging outweighs preference for SSOP manufacturability and legacy board compatibility. |
Compared with ADS7822U and MAX11131ETE+, the LTC1863CGN#PBF offers unique integration of 2.5V/4.096V references in a widely adopted SSOP package, delivering optimal balance of accuracy, power efficiency, and ease of use for industrial and portable instrumentation.
Availability
LTC1863CGN#PBF is available at Aetrix Electronics and suitable for industrial process control, battery-operated data loggers, and multiplexed test equipment requiring stable component supply and long-term production continuity.
Supply support for LTC1863CGN#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, Inc. is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LTC1863CGN#PBF belongs to the LTC® precision data acquisition family, designed specifically for low-power, high-accuracy multichannel digitization in space- and energy-constrained environments.
FAQ
What is the guaranteed operating temperature range for the LTC1863CGN#PBF?
The LTC1863CGN#PBF is specified for commercial-grade operation from 0°C to 70°C ambient temperature. This range covers standard industrial control cabinets, laboratory instruments, and consumer-grade portable devices where extended temperature tolerance is not required. The part's DC specifications-including ±1 LSB integral nonlinearity and 12-bit no-missing-codes behavior-are fully guaranteed across this interval.
Does the LTC1863CGN#PBF require an external reference to operate?
No, the LTC1863CGN#PBF does not require an external reference. It integrates a factory-trimmed 2.5V bandgap reference available at VREF (Pin 10) and a buffered 4.096V output at REFCOMP (Pin 9). These internal references enable immediate operation with only proper bypassing (2.2µF + 0.1µF on VREF; 10µF + 0.1µF on REFCOMP). External reference override is supported via the 6kΩ series resistor on VREF if tighter accuracy or lower drift is needed.
How does the LTC1863CGN#PBF handle differential versus single-ended input configurations?
The LTC1863CGN#PBF supports both configurations through its 7-bit command word. Setting the COM bit selects whether CH7/COM functions as channel 7 or as a shared common terminal. With COM = 0, pins CH0–CH7 operate as eight independent single-ended inputs. With COM = 1, CH7/COM becomes the common node for differential pairs (e.g., CH0–CH7/COM, CH1–CH7/COM). The SD (single/differential) and OS (odd/sign) bits further define polarity and pairing, enabling flexible mixed-mode acquisition without hardware changes.
What power-saving modes does the LTC1863CGN#PBF support, and how are they activated?
The LTC1863CGN#PBF supports two low-power states: automatic nap mode and explicit sleep mode. Nap mode activates automatically when CS/CONV remains high after conversion completion, reducing supply current from 1.3mA to 150µA. Sleep mode is entered by setting the SLP bit (bit 0) in the 7-bit configuration word, dropping current to 0.2µA. Wake-up from sleep requires 60ms for internal reference stabilization before valid conversions resume.
Can the LTC1863CGN#PBF interface directly with a 3.3V microcontroller SPI port?
Yes, the LTC1863CGN#PBF digital interface is compatible with 3.3V microcontrollers, provided level translation is applied to the SCK, SDI, and CS/CONV inputs. Its VIH minimum is 2.4V and VIL maximum is 0.8V at VDD = 5V, so 3.3V logic outputs meet input thresholds. However, SDO output swings from 0V to VDD (5V), requiring a level shifter or resistive divider to avoid overvoltage damage to 3.3V MCU inputs. Direct connection without translation risks damaging the microcontroller's input protection diodes.
LTC1863CGN#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:
- 0°C ~ 70°C
- Supplier Device Package:
- 16-SSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC1863CGN#PBF FAQ
1.How can I place an order for LTC1863CGN#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1863CGN#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 LTC1863CGN#PBF reliable?
The price and inventory of LTC1863CGN#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1863CGN#PBF is usually 5 days.
3.What payment methods are accepted for LTC1863CGN#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1863CGN#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1863CGN#PBF?
LTC1863CGN#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1863CGN#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 LTC1863CGN#PBF?
For technical support, including LTC1863CGN#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1863CGN#PBF requirements.
6.How does Aetrix verify that LTC1863CGN#PBF is sourced from the original manufacturer or authorized distributors?
All LTC1863CGN#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 LTC1863CGN#PBF meets industry standards.
7.What is the process for return or replacement of LTC1863CGN#PBF?
All LTC1863CGN#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1863CGN#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 LTC1863CGN#PBF part is unused and in its original packaging.
Return procedure for LTC1863CGN#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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