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Analog Devices Inc. LTC1867LIGN#TRPBF
- Part No.:
- LTC1867LIGN#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
LTC1867LIGN#TRPBF.pdf
- Description:
- IC ADC 16BIT SAR 16SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,567
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Product details
Overview
LTC1867LIGN#TRPBF from Analog Devices is a 16-bit, 175ksps successive-approximation ADC with integrated 1.25V reference, 8-channel analog multiplexer (configurable for single-ended or true differential inputs), SPI/MICROWIRE serial interface, and ±3LSB max INL over temperature. It operates from a 2.7V supply and delivers 83.7dB SNR in unipolar mode - used in high-precision industrial process control and battery-powered data acquisition systems.
For engineers reviewing the LTC1867LIGN#TRPBF datasheet, LTC1867LIGN#TRPBF pinout, LTC1867LIGN#TRPBF application, or LTC1867LIGN#TRPBF equivalent, key selection criteria include guaranteed 16-bit no missing codes, automatic nap/sleep modes (750µA/300µA/0.2µA), true differential input capability, internal vs external reference trade-offs, and AEC-Q100 qualification for automotive-grade reliability.
Technical Context
The LTC1867LIGN#TRPBF implements a capacitive SAR architecture with differential 16-bit DAC and low-power comparator rejecting common-mode noise. Conversion timing is factory-trimmed (3.2µs typ, 3.7µs max), with 2.01µs minimum acquisition time for full 16-bit settling at 175ksps.
Its configurable 8-channel MUX supports mixed single-ended/differential channel assignments via 7-bit serial command (SD/OS/S1/S0/COM/UNI/SLP), enabling flexible signal routing without external switching. The internal 1.25V bandgap reference features ±20ppm/°C tempco and can be overdriven via VREF pin for improved accuracy.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - guarantees monotonic transfer function and no missing codes across –40°C to +85°C. |
| Sample Rate | 175ksps - enables real-time capture of signals up to 1.25MHz full-power bandwidth. |
| INL | ±3LSB max - ensures ≤0.046% absolute linearity error for precision sensor interfacing. |
| SNR | 83.7dB (typ) - supports >13.6 effective number of bits (ENOB) in unipolar mode with internal reference. |
| Supply Current | 750µA at 175ksps - enables continuous high-speed operation in 3V battery systems with <2.7mW power dissipation. |
| Input Range | ±1.25V bipolar or 0–2.5V unipolar - matches standard industrial sensor outputs and transducer ranges. |
| Reference | Internal 1.25V ±0.5% (±20ppm/°C) - eliminates external reference component count while maintaining drift stability. |
Pinout & Package
Housed in a 16-pin narrow plastic SSOP (GN package), the LTC1867LIGN#TRPBF features exposed pad-compatible thermal design with θJA = 95°C/W and TJMAX = 110°C.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CH0–CH6 (Pins 1–7) | Analog Input Channel | Single-ended or differential "+" inputs; support mixed MUX configurations per 7-bit command word. |
| CH7/COM (Pin 8) | Configurable Common Input | Acts as CH7 or shared "–" input for differential pairs when COM bit = 1 - enables 4 differential channels or 7 SE + 1 COM topology. |
| VREF (Pin 10) | 1.25V Reference Output / External Reference Input | Provides internal reference; accepts external reference via 3kΩ series resistor for improved accuracy and drift performance. |
| REFCOMP (Pin 9) | 2.5V Buffered Reference Output | 2× gain output of VREF; requires 10µF + 0.1µF bypass for optimal noise rejection in precision applications. |
| CS/CONV (Pin 11) | Conversion Start / Serial Frame Enable | Rising edge initiates conversion; falling edge enables SDO output and allows configuration word loading on next cycle. |
| SDO (Pin 13) | Serial Data Output | Outputs 16-bit result in straight binary (unipolar) or two's complement (bipolar); Hi-Z when CS/CONV high. |
| SDI (Pin 14) | Serial Data Input | Accepts 7-bit MUX configuration word (SD/OS/S1/S0/COM/UNI/SLP) to define channel, polarity, and sleep mode. |
Key Features
| Feature | Design Value |
|---|---|
| True Differential Input Architecture | Enables rejection of common-mode noise on paired channels (e.g., CH0/CH1), critical for motor current sensing and isolated sensor interfaces. |
| Automatic Nap Mode Between Conversions | Reduces average current from 750µA to 170µA during inter-conversion intervals - extends battery life in portable DAQ without firmware intervention. |
| On-Chip 1.25V Bandgap Reference | Eliminates need for external reference IC; ±20ppm/°C drift supports stable measurements across industrial temperature range (–40°C to +85°C). |
| Mixed-Mode Multiplexer Control | 7-bit serial command allows dynamic reconfiguration of channel pairing, polarity, and sleep state - simplifies firmware for multi-sensor systems. |
| AEC-Q100 Qualified | Validated for automotive applications including engine control modules and ADAS sensor fusion units requiring extended temperature and reliability compliance. |
Applications
| Industrial Process Monitoring | Battery-Powered Sensor Node |
|---|---|
Use Scenario: Continuous monitoring of 4–20mA loop transmitters, RTD bridges, and strain gauges in PLC I/O modules. IC Role / Device Role / Timing Role: 16-bit ADC digitizes analog field signals with ±3LSB INL and 175ksps throughput; internal reference eliminates calibration drift. Use Value: Enables direct replacement of legacy 12-bit converters without sacrificing resolution or adding external reference components. | Use Scenario: Wireless environmental sensor node measuring temperature, humidity, and CO₂ using low-power analog front-end. IC Role / Device Role / Timing Role: Low-quiescent-current ADC (750µA active, 0.2µA sleep) samples sensors intermittently; SPI interface minimizes MCU GPIO usage. Use Value: Extends coin-cell battery life beyond 2 years by leveraging automatic nap mode and programmable sleep bit in MUX command. |
| Automotive Battery Management | Medical Imaging Signal Chain |
Use Scenario: Cell voltage and temperature monitoring in EV traction battery packs under vibration and wide temperature swings. IC Role / Device Role / Timing Role: AEC-Q100 qualified ADC acquires differential cell voltages with true 16-bit linearity and ±1.25V bipolar range. Use Value: Meets ASIL-B functional safety requirements through guaranteed monotonicity, no missing codes, and validated automotive reliability reports. | Use Scenario: Digitizing analog outputs from ultrasound transducer arrays and photodiode preamps in portable imaging devices. IC Role / Device Role / Timing Role: High-SNR (83.7dB) ADC captures low-amplitude RF echo signals with minimal quantization noise; 1.25MHz full-power bandwidth preserves pulse fidelity. Use Value: Achieves >13.6 ENOB required for diagnostic-grade image reconstruction without oversampling or external dithering. |
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 | 8-channel, 16-bit, 500ksps; integrated PGA (±10.24V range); SPI interface; no internal reference. | Requires external reference and higher supply (up to 5.25V); better suited for high-voltage industrial sensors than low-power battery systems. | Select when wider input range and programmable gain are needed; avoid if minimizing BOM count and supply voltage is critical. |
| AD7606C-16BSTZ | 8-channel, 16-bit, 1MSPS; simultaneous sampling; internal reference; parallel + SPI interface; larger 64-lead LQFP package. | Higher speed and simultaneous capture suit motor control; larger footprint and 15mA typical supply current limit portability. | Choose for real-time control loops needing synchronized multi-channel acquisition; not suitable for space- or power-constrained designs. |
Compared with ADS8688IPWR and AD7606C-16BSTZ, the LTC1867LIGN#TRPBF offers the lowest active power (750µA), smallest footprint (16-pin SSOP), and tightest INL (±3LSB) - making it optimal for portable, battery-operated, and automotive applications where size, efficiency, and precision are jointly constrained.
Availability
LTC1867LIGN#TRPBF is available at Aetrix Electronics and suitable for industrial process control, battery-operated sensor nodes, and automotive battery management systems requiring stable component supply and long-term lifecycle support.
Supply support for LTC1867LIGN#TRPBF 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 LTC1863L/LTC1867L product line was designed for micropower, space-constrained, high-accuracy data acquisition - emphasizing low supply voltage operation (2.7V), integrated reference, and flexible multiplexing without external support components.
FAQ
What is the operating temperature range for the LTC1867LIGN#TRPBF?
The LTC1867LIGN#TRPBF is specified for –40°C to +85°C (industrial grade), as confirmed by its "I" temperature suffix and ordering information table. This range covers demanding environments such as automotive under-hood applications and industrial control cabinets, and is validated per AEC-Q100 for automotive use cases.
Does the LTC1867LIGN#TRPBF support true differential input mode?
Yes, the LTC1867LIGN#TRPBF supports true differential inputs via its 8-channel MUX - for example, CH0/CH1, CH2/CH3, CH4/CH5, or CH6/CH7/COM pairs - with dedicated "+" and "–" sampling paths and common-mode rejection inherent to the SAR architecture. This is explicitly documented in the block diagram, pin functions, and multiplexer configuration tables.
Can the internal reference of the LTC1867LIGN#TRPBF be overdriven with an external reference?
Yes, the LTC1867LIGN#TRPBF allows external reference injection via the VREF pin, which has a built-in 3kΩ series resistor. When an external 1.25V source drives VREF, the internal bandgap is disabled and REFCOMP outputs a buffered 2.5V - improving accuracy and reducing drift compared to the internal reference.
How does the automatic nap mode reduce power consumption in the LTC1867LIGN#TRPBF?
The LTC1867LIGN#TRPBF automatically enters nap mode (170µA typical) when CS/CONV remains high after conversion completion. This eliminates software polling overhead and reduces average current between conversions - critical for battery-powered systems where duty-cycled sampling dominates total energy use.
Is the LTC1867LIGN#TRPBF pin-compatible with other members of the LTC1863L/LTC1867L family?
Yes, the LTC1867LIGN#TRPBF is pin-compatible with LTC1863L, LTC1867L, and LTC1867LA variants per the datasheet's "Pin Compatible" feature statement and identical 16-pin SSOP package mapping - enabling drop-in upgrades from 12-bit to 16-bit resolution without PCB redesign.
LTC1867LIGN#TRPBF 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:
- 2.7V ~ 3.6V
- Voltage - Supply, Digital:
- 2.7V ~ 3.6V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 16-SSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC1867LIGN#TRPBF FAQ
1.How can I place an order for LTC1867LIGN#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1867LIGN#TRPBF 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 LTC1867LIGN#TRPBF reliable?
The price and inventory of LTC1867LIGN#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1867LIGN#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC1867LIGN#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1867LIGN#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1867LIGN#TRPBF?
LTC1867LIGN#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1867LIGN#TRPBF 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 LTC1867LIGN#TRPBF?
For technical support, including LTC1867LIGN#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1867LIGN#TRPBF requirements.
6.How does Aetrix verify that LTC1867LIGN#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC1867LIGN#TRPBF 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 LTC1867LIGN#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC1867LIGN#TRPBF?
All LTC1867LIGN#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1867LIGN#TRPBF, 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 LTC1867LIGN#TRPBF part is unused and in its original packaging.
Return procedure for LTC1867LIGN#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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