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Analog Devices Inc. LTC1867AIGN#WTRPBF
- Part No.:
- LTC1867AIGN#WTRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
LTC1867AIGN#WTRPBF.pdf
- Description:
- IC ADC 16BIT SAR 16SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,225
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Product details
Overview
LTC1867AIGN#WTRPBF from Analog Devices is a 16-bit, 8-channel, 200ksps successive approximation ADC with integrated 2.5V reference, SPI/MICROWIRE interface, and configurable single-ended/differential input multiplexer. It delivers ±2LSB max INL, 89dB SNR (with internal reference), and operates from a single 5V supply in –40°C to +85°C industrial/automotive temperature range.
For engineers reviewing the LTC1867AIGN#WTRPBF datasheet, LTC1867AIGN#WTRPBF pinout, LTC1867AIGN#WTRPBF application, or LTC1867AIGN#WTRPBF equivalent, key selection considerations include guaranteed 16-bit no-missing-codes performance over temperature, automatic nap/sleep power management, unipolar/bipolar mode flexibility, and AEC-Q100-qualified automotive suitability.
Technical Context
The LTC1867AIGN#WTRPBF implements a capacitive SAR architecture with differential 16-bit DAC, low-power comparator, and on-chip 2.5V bandgap reference trimmed to ±0.8% initial accuracy. Its analog input mux supports eight channels with programmable COM bit enabling CH7/COM as common-mode reference or independent channel.
Digital control uses a 7-bit configuration word (SD/OS/S1/S0/COM/UNI/SLP) to select input mode, polarity, channel pair, and sleep activation. Serial I/O operates in standard SPI mode with CS/CONV framing, SCK up to 40MHz, and SDO outputting straight binary (unipolar) or two's complement (bipolar) data aligned to MSB-first timing.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - guarantees monotonic transfer function and no missing codes across full operating temperature range. |
| Sample Rate | 200ksps - enables real-time capture of signals up to 1.25MHz full-power bandwidth without aliasing. |
| INL | ±2LSB max - ensures end-point linearity error ≤ ±0.003% of full scale for precision sensor and control loop applications. |
| SNR | 89dB typical (with internal reference) - supports >14.5 effective number of bits (ENOB) for high-fidelity signal digitization. |
| Supply Current | 1.3mA at 200ksps, 150µA in nap mode - enables battery operation with <1mW active power dissipation at full rate. |
| Reference | Internal 2.5V ±15ppm/°C tempco - eliminates external reference component while maintaining stability for industrial ambient conditions. |
| Input Range | Unipolar 0–4.096V or bipolar ±2.048V - matches standard industrial voltage ranges and simplifies sensor interfacing. |
Pinout & Package
Package: 16-pin narrow-body SSOP (GN), 5.3mm × 6.2mm, 0.635mm pitch, RoHS-compliant lead-free finish.
| 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 conversion. |
| CH7/COM (Pin 8) | Configurable Analog Terminal | Functions as eighth channel (COM = 0) or common-mode reference for differential pairs (COM = 1); supports mixed single-ended/differential acquisition. |
| REFCOMP (Pin 9) | Reference Buffer Output | Provides 4.096V buffered reference; requires 10µF + 0.1µF bypass to GND for optimal noise performance and stability. |
| VREF (Pin 10) | 2.5V Reference Source/Sink | Delivers factory-trimmed 2.5V ±0.8%; can be overdriven by external reference via 6kΩ series resistor for improved accuracy or drift. |
| CS/CONV (Pin 11) | Conversion Start & Serial Frame | Rising edge initiates conversion; falling edge enables serial output; pulse width ≥40ns required for short-pulse mode. |
| SCK (Pin 12) | Serial Clock Input | Synchronizes 16-bit data transfer; supports up to 40MHz clock frequency for minimal interface latency. |
| SDO (Pin 13) | Digital Data Output | Outputs conversion result MSB-first; logic levels compatible with 5V CMOS; Hi-Z when CS/CONV high. |
| SDI (Pin 14) | Configuration Data Input | Accepts 7-bit control word to configure input mode, channel, polarity, and sleep state before next conversion. |
| GND (Pin 15) | Analog/Digital Common Ground | Shared return for analog inputs, reference, and digital I/O; 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 |
|---|---|
| 16-bit No Missing Codes | Guaranteed over –40°C to +85°C; eliminates code gaps in closed-loop control and high-resolution measurement systems. |
| Configurable Input MUX | Supports 8 single-ended, 4 differential, or mixed configurations via software-controlled COM/SD/OS bits-reduces external multiplexer count. |
| Automatic Nap Mode | Reduces current from 1.3mA to 150µA between conversions without firmware intervention-ideal for burst-sampling applications. |
| AEC-Q100 Qualified | Rated for automotive grade 3 (–40°C to +85°C) with controlled manufacturing flow-enables use in engine control, ADAS sensors, and body electronics. |
| On-Chip Reference | 2.5V ±15ppm/°C tempco and 4.096V buffered output eliminate need for external reference IC in cost-sensitive designs. |
Applications
| Industrial Process Monitoring | Battery-Powered Data Loggers |
|---|---|
|
Use Scenario: Continuous monitoring of 4–20mA current loops, thermocouple outputs, and RTD bridges in PLC I/O modules. IC Role / Device Role / Timing Role: Primary 16-bit digitizer with programmable gain and bipolar input support for direct sensor interface. Use Value: ±2LSB INL and 89dB SNR enable sub-0.1% total system accuracy without calibration across temperature. |
Use Scenario: Multi-sensor environmental logging (temperature, humidity, pressure) in portable field instruments with 10-year battery life. IC Role / Device Role / Timing Role: Low-power ADC with automatic nap/sleep modes triggered by microcontroller wake-up events. Use Value: 150µA nap current and 0.2µA sleep current extend battery life while maintaining 200ksps readiness for transient capture. |
| Automotive Sensor Fusion | Multiplexed Test Equipment |
|
Use Scenario: Aggregating signals from multiple wheel speed, brake pressure, and cabin air quality sensors in ADAS ECUs. IC Role / Device Role / Timing Role: AEC-Q100-qualified 8-channel ADC performing synchronized sampling across critical vehicle subsystems. Use Value: Channel-to-channel isolation >117dB at 100kHz prevents crosstalk-induced false triggering in safety-critical functions. |
Use Scenario: Modular benchtop DMMs and automated test systems requiring flexible input routing and fast throughput. IC Role / Device Role / Timing Role: Reconfigurable front-end ADC supporting both single-ended and differential measurements via SPI command. Use Value: Software-selectable unipolar/bipolar modes and on-the-fly MUX reconfiguration reduce hardware variants and BOM complexity. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS8688IPWR | 16-bit, 500ksps, internal 4.096V ref, SPI interface, but requires 3.3V digital supply and separate analog supply. | Higher sample rate and better SNR (92dB), but lacks AEC-Q100 qualification and automotive temperature range. | Select for non-automotive high-speed data acquisition where dual-supply design is acceptable. |
| MAX11100ETK+ | 16-bit, 250ksps, internal 2.048V ref, SPI interface, 10-pin µMAX package, lower power (0.9mA @ 250ksps). | Smaller footprint and lower quiescent current, but only 4-channel mux and no AEC-Q100 rating. | Select for space-constrained industrial IoT nodes needing fewer channels and minimal board area. |
Compared with ADS8688IPWR and MAX11100ETK+, the LTC1867AIGN#WTRPBF uniquely combines AEC-Q100 qualification, 8-channel flexibility, and single 5V operation-making it the only choice for automotive-grade multiplexed sensing where supply simplicity and reliability are mandatory.
Availability
LTC1867AIGN#WTRPBF is available at Aetrix Electronics and suitable for industrial process control, battery-operated instrumentation, and automotive sensor fusion requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC1867AIGN#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 LTC1867AIGN#WTRPBF belongs to the LTC® precision data acquisition family, designed specifically for low-power, high-accuracy, multi-channel sensing in harsh environments where reliability, temperature stability, and integration are critical.
FAQ
What is the guaranteed operating temperature range for LTC1867AIGN#WTRPBF?
The LTC1867AIGN#WTRPBF is rated for –40°C to +85°C operation and is AEC-Q100 qualified for automotive applications. This specification is guaranteed across all electrical parameters including INL, SNR, and reference stability, with no derating required within this range.
Does LTC1867AIGN#WTRPBF require an external reference for full 16-bit performance?
No. The LTC1867AIGN#WTRPBF includes a factory-trimmed 2.5V internal reference with ±15ppm/°C tempco and supports full 16-bit no-missing-codes performance using its internal reference. External references may improve drift but are not required for datasheet-specified accuracy.
How does the automatic nap mode function in LTC1867AIGN#WTRPBF?
When CS/CONV remains high after conversion completion, the LTC1867AIGN#WTRPBF automatically enters nap mode, reducing supply current from 1.3mA to 150µA while keeping VREF and REFCOMP active. This occurs without firmware overhead and resumes full operation on the next CS/CONV rising edge.
Can LTC1867AIGN#WTRPBF perform simultaneous sampling across all 8 channels?
No. The LTC1867AIGN#WTRPBF uses a single SAR core with an 8-channel multiplexer; it performs sequential sampling with typical acquisition time of 1.5µs per channel. True simultaneous sampling requires multiple independent ADC cores not present in this device.
What is the purpose of the COM bit in the LTC1867AIGN#WTRPBF configuration word?
The COM bit (bit 3 of the 7-bit SDI word) determines whether CH7/COM functions as an independent channel (COM = 0) or as the common-mode reference for differential pairs (COM = 1). This enables flexible hardware reuse without PCB changes for varying sensor topologies.
LTC1867AIGN#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:
- 16
- 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
LTC1867AIGN#WTRPBF FAQ
1.How can I place an order for LTC1867AIGN#WTRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1867AIGN#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 LTC1867AIGN#WTRPBF reliable?
The price and inventory of LTC1867AIGN#WTRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1867AIGN#WTRPBF is usually 5 days.
3.What payment methods are accepted for LTC1867AIGN#WTRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1867AIGN#WTRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1867AIGN#WTRPBF?
LTC1867AIGN#WTRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1867AIGN#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 LTC1867AIGN#WTRPBF?
For technical support, including LTC1867AIGN#WTRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1867AIGN#WTRPBF requirements.
6.How does Aetrix verify that LTC1867AIGN#WTRPBF is sourced from the original manufacturer or authorized distributors?
All LTC1867AIGN#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 LTC1867AIGN#WTRPBF meets industry standards.
7.What is the process for return or replacement of LTC1867AIGN#WTRPBF?
All LTC1867AIGN#WTRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1867AIGN#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 LTC1867AIGN#WTRPBF part is unused and in its original packaging.
Return procedure for LTC1867AIGN#WTRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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