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Analog Devices Inc. LTC1867IGN#TRPBF
- Part No.:
- LTC1867IGN#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 16-SSOP (0.154", 3.90mm Width)
- Datasheet:
-
LTC1867IGN#TRPBF.pdf
- Description:
- IC ADC 16BIT SAR 16SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,575
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Product details
Overview
LTC1867IGN#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 in industrial temperature range (–40°C to +85°C). Used in high-precision data acquisition for sensor monitoring and process control systems.
For engineers reviewing the LTC1867IGN#TRPBF datasheet, LTC1867IGN#TRPBF pinout, LTC1867IGN#TRPBF application, or LTC1867IGN#TRPBF equivalent, key selection criteria include guaranteed 16-bit no-missing-codes performance over temperature, automatic nap/sleep power management, differential channel isolation (>117dB at 100kHz), and SSOP-16 package compatibility with space-constrained PCB layouts.
Technical Context
The LTC1867IGN#TRPBF implements a capacitive SAR architecture with factory-trimmed internal clock (3µs typical conversion time) and simultaneous sampling of differential inputs via an 8-channel analog MUX. Its dual-reference structure provides 2.5V at VREF (Pin 10) and buffered 4.096V at REFCOMP (Pin 9), enabling unipolar (0–4.096V) or bipolar (±2.048V) operation with straight binary or two's complement output coding.
Control logic accepts a 7-bit configuration word (SD/OS/S1/S0/COM/UNI/SLP) via SDI to select channel pairing, input mode, polarity, and sleep activation. The CS/CONV pin serves dual roles: rising edge initiates conversion, and low state enables serial readout on SDO while synchronizing with SCK - supporting both short-pulse and continuous framing modes per MICROWIRE timing conventions.
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 operating range. |
| Sample Rate | 200ksps - supports real-time capture of signals up to 1.25MHz full-power bandwidth without aliasing. |
| INL | ±2LSB max - ensures end-point linearity error ≤ ±0.003% FS, critical for calibration-sensitive instrumentation. |
| SNR | 89dB typical (with internal reference) - enables >14.5 effective number of bits (ENOB) for high-fidelity signal digitization. |
| Power @ 200ksps | 1.3mA supply current - draws only 6.5mW from 5V, enabling battery operation in portable measurement devices. |
| Analog Input Range | ±2.048V (bipolar) or 0–4.096V (unipolar) - matches standard industrial sensor outputs and PLC voltage ranges. |
| Channel Isolation | –117dB at 100kHz - prevents crosstalk between adjacent channels during multiplexed acquisition of mixed-signal sources. |
Pinout & Package
Housed in a 16-pin narrow plastic SSOP (GN package), the LTC1867IGN#TRPBF uses a compact 5.3mm × 5.3mm footprint with 0.65mm pitch, suitable for dense industrial PCB layouts.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CH0–CH6 (Pins 1–7) | Analog Input Channel | Single-ended or differential "+" inputs; configurable as independent channels or paired with CH7/COM. |
| CH7/COM (Pin 8) | Configurable Input Terminal | Functions as eighth channel (CH7) or common-mode reference (COM) for differential pairs when COM bit = 1. |
| REFCOMP (Pin 9) | Reference Buffer Output | Provides 4.096V buffered reference; requires 10µF + 0.1µF bypass for stable low-noise operation. |
| VREF (Pin 10) | Internal Reference Tap | Delivers factory-trimmed 2.5V ±0.4%; can be overdriven externally to improve accuracy or drift performance. |
| CS/CONV (Pin 11) | Conversion Start / Serial Frame | Rising edge triggers conversion; low state enables SDO output and defines SPI frame boundary. |
| SCK (Pin 12) | Serial Clock Input | Synchronizes 16-bit data transfer; supports up to 40MHz clock for fast readout in burst mode. |
| SDO (Pin 13) | Digital Data Output | Outputs conversion result MSB-first in straight binary (unipolar) or two's complement (bipolar) format. |
| SDI (Pin 14) | Configuration Input | Accepts 7-bit control word to set channel, mode, polarity, and sleep state before each conversion. |
| GND (Pin 15) | Analog/Digital Ground | Common return for analog inputs, reference circuitry, and digital I/O; must connect to low-impedance ground plane. |
| VDD (Pin 16) | Supply Voltage | Single 4.75–5.25V rail powers analog core, reference, and digital interface; requires 10µF + 0.1µF local bypass. |
Key Features
| Feature | Design Value |
|---|---|
| 16-bit no-missing-codes performance | Guaranteed over full –40°C to +85°C range, eliminating code gaps in closed-loop control feedback paths. |
| Configurable 8-channel MUX | Supports mixed single-ended/differential acquisition on same device - reduces BOM count in multi-sensor systems. |
| Automatic nap mode | Reduces current from 1.3mA to 150µA between conversions, scaling power linearly with sample rate for energy efficiency. |
| Integrated 2.5V bandgap reference | Factory-trimmed ±0.1% initial accuracy and ±15ppm/°C tempco - eliminates external reference component and layout area. |
| SPI/MICROWIRE-compatible interface | Uses standard 3-wire serial protocol with CS/CONV framing - simplifies host MCU firmware integration and reduces GPIO usage. |
| High channel-to-channel isolation | –117dB at 100kHz prevents interference between simultaneously monitored signals like motor phase currents and bus voltages. |
Applications
| Industrial Process Monitoring | Portable Battery-Powered Datalogger |
|---|---|
|
Use Scenario: Continuous monitoring of temperature, pressure, and flow sensors in chemical plant control cabinets. IC Role / Device Role / Timing Role: 16-bit precision ADC acquiring 8 analog sensor outputs sequentially at 10ksps per channel with synchronized timestamping. Use Value: ±2LSB INL ensures calibrated sensor readings remain within specification across ambient temperature swings from –40°C to +85°C. |
Use Scenario: Field-deployable environmental sensor node logging air quality, humidity, and noise levels for 72+ hours on AA batteries. IC Role / Device Role / Timing Role: Low-power ADC performing burst-mode acquisition every 5 seconds, entering sleep mode (0.2µA) between samples. Use Value: 1.3mA active current and automatic nap mode extend battery life by 3.2× versus comparable 16-bit converters without dynamic power scaling. |
| Multiplexed Motor Control Feedback | Imaging System Signal Digitization |
|
Use Scenario: Real-time acquisition of three-phase current, DC bus voltage, and heatsink temperature in servo drive modules. IC Role / Device Role / Timing Role: Simultaneous sampling of differential current shunt signals and single-ended voltage rails using CH7/COM as shared reference. Use Value: –117dB channel isolation prevents cross-coupling between high-dv/dt motor phases and sensitive analog measurements. |
Use Scenario: Digitizing analog outputs from CCD/CMOS image sensors in medical endoscopy equipment requiring low noise and high linearity. IC Role / Device Role / Timing Role: High-SNR ADC capturing 16-bit pixel data at 200ksps with minimal harmonic distortion for accurate grayscale reproduction. Use Value: 89dB SNR and –95dB THD preserve fine image detail and contrast resolution in diagnostic-grade imaging pipelines. |
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; external reference required; SPI-only interface; no integrated reference. | Higher throughput but lacks internal 2.5V reference and REFCOMP buffer - requires additional reference IC and layout area. | Select when system already uses precision external reference and demands >200ksps aggregate sampling rate. |
| AD7606C-16BSTZ | 8-channel, 16-bit, 1MSPS; simultaneous sampling; ±10V/±5V input range; parallel + SPI interface. | Supports higher input voltage ranges and true simultaneous sampling - suited for power quality analyzers with strict phase alignment. | Choose for applications needing synchronized capture across all 8 channels or wider analog input spans beyond ±2.048V. |
Compared with ADS8688IPWR and AD7606C-16BSTZ, the LTC1867IGN#TRPBF offers lowest BOM count via integrated reference and optimal power efficiency at 200ksps, making it ideal for cost- and space-constrained industrial sensors where absolute throughput is secondary to precision and autonomy.
Availability
LTC1867IGN#TRPBF is available at Aetrix Electronics and suitable for industrial process control, portable datalogging, and motor feedback systems requiring stable component supply with guaranteed long-term manufacturability.
Supply support for LTC1867IGN#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 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 LTC1867IGN#TRPBF belongs to Analog Devices' precision data acquisition product line, engineered for low-power, high-accuracy measurement in harsh environments where reliability, temperature stability, and minimal external components are critical design requirements.
FAQ
What is the operating temperature range for the LTC1867IGN#TRPBF?
The LTC1867IGN#TRPBF is rated for industrial operation from –40°C to +85°C. This extended range is confirmed in the Absolute Maximum Ratings table and Converter Characteristics section of the datasheet, where all key parameters-including INL, SNR, and supply current-are specified over this full interval. The 'I' grade designation in the part number explicitly denotes this temperature capability.
Does the LTC1867IGN#TRPBF require an external reference?
No, the LTC1867IGN#TRPBF includes a factory-trimmed 2.5V internal bandgap reference accessible at VREF (Pin 10) and amplified to 4.096V at REFCOMP (Pin 9). External reference is optional-used only when improved accuracy (<±0.05%) or lower tempco (<±5ppm/°C) is required. The internal reference supports full 16-bit performance without additional components.
How does the automatic nap mode reduce power consumption in the LTC1867IGN#TRPBF?
The LTC1867IGN#TRPBF enters automatic nap mode when CS/CONV remains high after conversion completion. In this state, analog circuitry (except VREF and REFCOMP buffers) powers down, reducing supply current from 1.3mA to 150µA. Power scales linearly with sample rate-e.g., at 10ksps, average current drops to ~150µA-enabling ultra-low-power operation in intermittent sensing applications.
Can the LTC1867IGN#TRPBF perform true differential measurements across all eight channels?
Yes-the LTC1867IGN#TRPBF supports true differential acquisition using any pair of channels (e.g., CH0/CH1, CH2/CH3) or CH7/COM as the common reference. The 7-bit configuration word allows dynamic selection of differential mode (SD=0), odd/even pairing (OS bit), and COM assignment. Channel-to-channel isolation of –117dB at 100kHz ensures minimal crosstalk during simultaneous differential reads.
What is the maximum SCK frequency supported by the LTC1867IGN#TRPBF digital interface?
The LTC1867IGN#TRPBF supports SCK frequencies up to 40MHz, as specified in the Timing Characteristics table. At 40MHz with falling-edge capture, the minimum t2 (SDO valid after SCK↓) is 22ns, allowing reliable data readout. For rising-edge capture, the maximum usable SCK is 20MHz due to t2 constraint of 25ns. This enables fast serial readout of 16-bit results in under 400ns.
LTC1867IGN#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:
- -40°C ~ 85°C
- Supplier Device Package:
- 16-SSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC1867IGN#TRPBF FAQ
1.How can I place an order for LTC1867IGN#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1867IGN#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 LTC1867IGN#TRPBF reliable?
The price and inventory of LTC1867IGN#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1867IGN#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC1867IGN#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1867IGN#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1867IGN#TRPBF?
LTC1867IGN#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1867IGN#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 LTC1867IGN#TRPBF?
For technical support, including LTC1867IGN#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1867IGN#TRPBF requirements.
6.How does Aetrix verify that LTC1867IGN#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC1867IGN#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 LTC1867IGN#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC1867IGN#TRPBF?
All LTC1867IGN#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1867IGN#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 LTC1867IGN#TRPBF part is unused and in its original packaging.
Return procedure for LTC1867IGN#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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