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Analog Devices Inc. LTC1867CGN#TRPBF
- Part No.:
- LTC1867CGN#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
LTC1867CGN#TRPBF.pdf
- Description:
- IC ADC 16BIT SAR 16SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,809
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Product details
Overview
LTC1867CGN#TRPBF 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. It is used in high-precision industrial data acquisition systems requiring low power and stable DC performance.
For engineers reviewing the LTC1867CGN#TRPBF datasheet, LTC1867CGN#TRPBF pinout, LTC1867CGN#TRPBF application, or LTC1867CGN#TRPBF equivalent, key selection criteria include guaranteed 16-bit no-missing-codes operation over temperature, automatic nap/sleep modes for battery-sensitive designs, and support for unipolar (0–4.096V) or bipolar (±2.048V) conversion modes with on-chip reference buffering.
Technical Context
The LTC1867CGN#TRPBF employs a capacitive SAR architecture with differential 16-bit DAC and low-power comparator. Its analog input MUX supports dynamic reconfiguration via 7-bit serial command-enabling mixed single-ended and differential channel pairs using CH7/COM as common or independent input.
It features factory-trimmed internal bandgap reference (2.5V ±0.4%, ±15ppm/°C tempco), buffered to 4.096V at REFCOMP. Timing is governed by internal clock (3µs typical conversion time, 1.1µs acquisition), synchronized externally via SCK up to 40MHz, with CS/CONV controlling both conversion start and serial frame enable.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - guarantees monotonic transfer function and no missing codes across full temperature range (0°C to 70°C). |
| Sample Rate | 200ksps - enables real-time capture of signals up to 1.25MHz full-power bandwidth without aliasing. |
| INL | ±2LSB max - ensures absolute accuracy ≤ ±0.003% of full-scale range, critical for calibration-critical sensor interfaces. |
| 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 continuous monitoring in portable instrumentation with minimal thermal load. |
| Analog Input Range | Unipolar: 0–4.096V; Bipolar: ±2.048V - matches standard industrial voltage ranges and simplifies sensor signal conditioning. |
| Reference | Internal 2.5V ±0.4% VREF + 4.096V REFCOMP - eliminates external reference component count while supporting precision ratiometric measurements. |
Pinout & Package
Package: 16-pin narrow plastic SSOP (GN), 0.15mm lead pitch, 5.0mm × 6.2mm body size, 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 hold mode. |
| CH7/COM (Pin 8) | Configurable Analog Terminal | Functions as eighth channel (CH7) or common-mode reference (COM) for differential pairs when COM bit = 1 in config word. |
| REFCOMP (Pin 9) | Reference Buffer Output | Provides 4.096V buffered reference; requires 10µF + 0.1µF bypass to GND for <1µV RMS noise and stable settling. |
| VREF (Pin 10) | Internal Reference Tap | 2.5V output with 6kΩ series resistor-allows overdrive by external reference for improved drift/accuracy (e.g., LT1019A-2.5). |
| CS/CONV (Pin 11) | Conversion Start & Serial Frame | Rising edge initiates conversion; falling edge enables SDO output and frames SPI data transfer (MSB-first, 16-bit). |
| SCK (Pin 12) | Serial Clock Input | Accepts up to 40MHz clock; controls timing of SDI sampling and SDO output valid windows (t2 ≤22ns, t3 ≥5ns). |
| SDO (Pin 13) | Digital Data Output | Outputs conversion result: straight binary (unipolar) or two's complement (bipolar); Hi-Z when CS/CONV high. |
| SDI (Pin 14) | Serial Configuration Input | Accepts 7-bit control word (SD/OS/S1/S0/COM/UNI/SLP) to configure MUX, polarity, and sleep mode before next conversion. |
| GND (Pin 15) | Analog/Digital Ground | Single ground plane required; separates analog and digital return paths internally but demands low-impedance PCB connection. |
| VDD (Pin 16) | Power Supply | 4.75–5.25V single supply; requires 10µF + 0.1µF bypass close to pin to suppress switching noise coupling into reference path. |
Key Features
| Feature | Design Value |
|---|---|
| 16-bit no-missing-codes performance | Guaranteed over 0°C to 70°C - eliminates code ambiguity in closed-loop control and metrology applications. |
| Configurable 8-channel analog MUX | Supports 4 differential + 4 single-ended, 7 single-ended + COM, or all-differential modes - reduces external multiplexer IC count. |
| Automatic nap mode between conversions | Reduces average current to 150µA at low sample rates - extends battery life in portable DAQ without firmware intervention. |
| On-chip 2.5V reference with 4.096V buffer | Enables ratiometric measurement against 4.096V full-scale - eliminates gain error drift in sensor bridges and RTD circuits. |
| SPI/MICROWIRE-compatible serial interface | Uses standard 3-wire protocol (CS/CONV, SCK, SDO/SDI) - interoperable with most microcontrollers without level-shifting or glue logic. |
| Low acquisition time (1.1µs typical) | Allows fast channel switching and high-throughput scanning - supports 200ksps sustained rate across all 8 channels. |
Applications
| Industrial Process Monitoring | Portable Battery-Powered DAQ |
|---|---|
|
Use Scenario: Continuous voltage/current sensing from multiple pressure, temperature, and flow transducers in PLC I/O modules. IC Role / Device Role / Timing Role: Central 16-bit ADC acquiring synchronized samples from 8 analog sensors at 200ksps aggregate rate with ±2LSB linearity. Use Value: Eliminates external reference and MUX ICs while maintaining traceable calibration accuracy across temperature and supply variation. |
Use Scenario: Handheld multimeter or field calibrator capturing transient waveforms and DC levels from isolated sensor inputs. IC Role / Device Role / Timing Role: Low-power 16-bit converter operating in nap mode between manual-triggered acquisitions to extend 2000mAh Li-ion battery life beyond 12 hours. Use Value: 1.3mA active current and 0.2µA sleep current enable long-duration logging without compromising resolution or noise floor. |
| Multiplexed Sensor Interface | Imaging System Front-End |
|
Use Scenario: Digitizing outputs from multi-element thermopile arrays or MEMS microphone banks in HVAC or acoustic analysis equipment. IC Role / Device Role / Timing Role: Configurable MUX routes differential pairs (e.g., CH0+/CH1−) or single-ended channels (CH2–CH7) under software control per acquisition cycle. Use Value: Dynamic reconfiguration avoids fixed hardware routing, enabling flexible channel mapping and adaptive gain scaling per sensor type. |
Use Scenario: Capturing analog pixel data from linear CCD or CMOS image sensors in document scanners or industrial inspection cameras. IC Role / Device Role / Timing Role: High-SNR 16-bit digitizer sampling at 200ksps with 89dB SNR to preserve contrast and low-light detail in grayscale images. Use Value: Internal reference stability and low transition noise (0.74LSB RMS) prevent banding artifacts and ensure consistent grayscale linearity. |
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 reference, SPI interface, but requires external 3.3V supply and has higher 3.5mA active current. | Targets higher-speed industrial automation where throughput >200ksps is mandatory; less suitable for 5V-only or ultra-low-power systems. | Select ADS8688IPWR only when needing >200ksps with identical 16-bit resolution and built-in reference; verify 3.3V supply availability and thermal budget. |
| MAX11100ETK+ | 16-bit, 250ksps, internal 2.048V reference, SPI interface, 1.8–3.6V supply range, but lacks differential MUX flexibility and has ±4LSB INL. | Better suited for compact, low-voltage embedded systems (e.g., IoT edge nodes), not for precision industrial signal chains requiring ±2LSB INL. | Choose MAX11100ETK+ for space-constrained 3.3V designs accepting relaxed linearity; avoid where bipolar ±2.048V range or 0.003% absolute accuracy is required. |
Compared with LTC1867CGN#TRPBF, ADS8688IPWR offers higher speed but demands dual-supply design and consumes nearly triple the active current, while MAX11100ETK+ fits low-voltage footprints but sacrifices linearity and reference flexibility-making LTC1867CGN#TRPBF optimal for 5V, precision, and power-balanced industrial DAQ.
Availability
LTC1867CGN#TRPBF is available at Aetrix Electronics and suitable for industrial process control, portable battery-operated data acquisition, and multiplexed sensor interface applications requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for LTC1867CGN#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 since 1965.
The LTC1867CGN#TRPBF belongs to Analog Devices' precision data acquisition product line, engineered for applications demanding high DC accuracy, low power, and integrated reference functionality in space-constrained industrial and portable instrumentation.
FAQ
What is the operating temperature range for the LTC1867CGN#TRPBF?
The LTC1867CGN#TRPBF is specified for commercial-grade operation from 0°C to 70°C. This range is confirmed in the Order Information table of the datasheet, where the "C" grade (e.g., LTC1867CGN#TRPBF) explicitly denotes 0°C to 70°C ambient. It is not rated for extended industrial (–40°C to 85°C) or automotive use unless marked with "I" or "W" suffixes.
Does the LTC1867CGN#TRPBF support differential input configurations?
Yes, the LTC1867CGN#TRPBF supports true differential inputs via its 8-channel MUX. When the COM bit = 1 in the configuration word, CH7/COM serves as the common reference for differential pairs (e.g., CH0+/CH7−). When COM = 0, it supports adjacent differential pairs like CH0+/CH1−. All differential modes maintain the same ±2LSB INL and 89dB SNR specifications as single-ended operation.
Can the internal reference of the LTC1867CGN#TRPBF be overdriven with an external reference?
Yes, the VREF pin (Pin 10) of the LTC1867CGN#TRPBF includes a 6kΩ series resistor, allowing safe overdrive by an external precision reference such as the LT1019A-2.5. When an external 2.5V source is applied, the internal bandgap is disabled, and the buffered 4.096V output at REFCOMP tracks the external reference's accuracy and drift-improving system-level gain stability.
How does the automatic nap mode reduce power consumption in the LTC1867CGN#TRPBF?
The LTC1867CGN#TRPBF enters automatic nap mode when CS/CONV remains high after conversion completion. In this state, the analog front-end and reference buffers remain active, but the SAR logic and comparator bias currents are reduced-lowering supply current from 1.3mA to 150µA. Power scales inversely with sample rate, making nap mode ideal for intermittent acquisition.
What is the maximum SCK frequency supported by the LTC1867CGN#TRPBF?
The LTC1867CGN#TRPBF supports SCK frequencies up to 40MHz, as specified in the Timing Characteristics table. At 40MHz with falling-edge capture, setup time (t5) is –6ns and hold time (t6) is 4ns-requiring compatible controller timing margins. For rising-edge capture, maximum SCK is limited to 20MHz due to t2 ≤22ns constraint.
LTC1867CGN#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:
- 4.75V ~ 5.25V
- Voltage - Supply, Digital:
- 4.75V ~ 5.25V
- Features:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 16-SSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC1867CGN#TRPBF FAQ
1.How can I place an order for LTC1867CGN#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1867CGN#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 LTC1867CGN#TRPBF reliable?
The price and inventory of LTC1867CGN#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1867CGN#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC1867CGN#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1867CGN#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1867CGN#TRPBF?
LTC1867CGN#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1867CGN#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 LTC1867CGN#TRPBF?
For technical support, including LTC1867CGN#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1867CGN#TRPBF requirements.
6.How does Aetrix verify that LTC1867CGN#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC1867CGN#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 LTC1867CGN#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC1867CGN#TRPBF?
All LTC1867CGN#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1867CGN#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 LTC1867CGN#TRPBF part is unused and in its original packaging.
Return procedure for LTC1867CGN#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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