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Analog Devices Inc. LTC1864IMS8#TRPBF
- Part No.:
- LTC1864IMS8#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC1864IMS8#TRPBF.pdf
- Description:
- IC ADC 16BIT SAR 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,344
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Product details
Overview
LTC1864IMS8#TRPBF from Analog Devices (formerly Linear Technology) is a 16-bit, 250ksps single-channel differential successive approximation ADC in an 8-lead MSOP package, operating on a single 5V supply with 850μA typical supply current and guaranteed operation from –40°C to +85°C. It features true differential analog inputs (IN+, IN–), adjustable external reference (VREF), SPI/MICROWIRE-compatible 3-wire serial interface, and auto shutdown reducing current to 2μA at 1ksps - ideal for low-power portable instrumentation.
For engineers reviewing the LTC1864IMS8#TRPBF datasheet, LTC1864IMS8#TRPBF pinout, LTC1864IMS8#TRPBF application, or LTC1864IMS8#TRPBF equivalent, key selection criteria include its 16-bit resolution at 250ksps, differential input architecture with ±8 LSB INL, 87 dB SNR, MSOP-8 thermal performance (θJA = 210°C/W), and compatibility with ratiometric or external reference systems down to 1V full-scale span.
Technical Context
The LTC1864IMS8#TRPBF implements a switched-capacitor SAR architecture with integrated sample-and-hold, supporting unipolar differential input measurement where output code = (IN+ − IN−) × 65535 / VREF. Its conversion cycle is initiated by a rising edge on CONV, completes in 2.75–3.3 μs, and automatically enters sleep mode if CONV remains high post-conversion.
Digital interface uses a 3-wire SPI/MICROWIRE protocol: SDO outputs 16-bit data on SCK falling edges, while SCK frequency supports up to 16.7 MHz (H-grade) and tCONV timing ensures deterministic latency. The device requires separate analog ground (GND) connection and mandates 1μF tantalum bypassing on both VCC and VREF pins referenced to analog ground for optimal noise rejection.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - delivers 65,536 discrete output codes for high-precision voltage measurement |
| Max Sampling Rate | 250 ksps - enables real-time acquisition of signals up to 125 kHz full-linear bandwidth |
| Supply Current | 850 μA typ at 250 ksps; drops to 2 μA at 1 ksps via auto shutdown - critical for battery life in portable systems |
| INL Error | ±8 LSB max - ensures monotonicity and <0.012% full-scale linearity error across temperature |
| SNR | 87 dB - supports >14-bit effective resolution in noise-sensitive sensor interfaces |
| Input Range | 0 V to VREF differential; absolute input range −0.05 V to VCC + 0.05 V - allows direct connection to op-amp outputs without level-shifting |
| Reference Range | VREF = 1 V to 5 V - enables flexible scaling for low-voltage sensors or rail-to-rail inputs when VREF = VCC |
Pinout & Package
Package: 8-lead plastic MSOP (MS8), 3 mm × 3 mm, exposed pad not present, θJA = 210°C/W, rated for –40°C to +85°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VREF (Pin 1) | Reference Input | Defines full-scale span; must be low-noise and bypassed to GND with ≥1 μF capacitor |
| IN+ (Pin 2) | Differential Analog Input (+) | High-impedance input sampled simultaneously with IN–; rejects common-mode noise |
| IN– (Pin 3) | Differential Analog Input (–) | Completes differential pair; zero-code occurs when IN+ = IN– |
| GND (Pin 4) | Analog Ground | Must connect directly to analog ground plane with minimal trace length |
| CONV (Pin 5) | Convert Control Input | Rising edge starts conversion; held high after completion triggers auto-sleep mode |
| SDO (Pin 6) | Serial Data Output | 3-wire SPI output; 16-bit result shifted on SCK falling edge; tri-stated when CONV high |
| SCK (Pin 7) | Serial Clock Input | Synchronizes data transfer; supports up to 16.7 MHz clock rate |
| VCC (Pin 8) | Positive Supply | Single 4.75 V to 5.25 V supply; requires local 1 μF tantalum bypass to GND |
Key Features
| Feature | Design Value |
|---|---|
| True Differential Input Architecture | Rejects common-mode noise up to fCM = 125 kHz, enabling clean measurements in noisy industrial environments |
| Auto Power-Down Between Conversions | Reduces average current from 850 μA to 2 μA at 1 ksps - extends battery life in intermittent-sampling applications |
| Adjustable Reference Input (1 V to VCC) | Supports direct interfacing with low-output sensors (e.g., 1 V bridge transducers) without gain stages |
| Guaranteed Operation to +85°C | Validated performance over full industrial temperature range without derating |
| SPI/MICROWIRE-Compatible Interface | Eliminates need for protocol translation logic when interfacing with Microchip PIC, STMicro STM32, or TI MSP430 MCUs |
Applications
| Portable Instrumentation | Isolated Data Acquisition |
|---|---|
Use Scenario: Handheld multimeter acquiring DC voltage and thermocouple signals with 16-bit precision and battery runtime >24 hours. IC Role / Device Role / Timing Role: Primary sampling ADC performing differential measurements with external 2.5 V reference and auto shutdown between readings. Use Value: 850 μA supply current at 250 ksps and 2 μA sleep current enable multi-day operation on two AA cells. | Use Scenario: Industrial sensor node transmitting analog sensor data across opto-isolated or transformer-coupled barrier. IC Role / Device Role / Timing Role: Front-end ADC digitizing isolated bridge or RTD signals before serial transmission through isolated UART or SPI link. Use Value: High-impedance differential inputs eliminate need for buffer op-amps, reducing component count and power in space-constrained isolated modules. |
| Low-Power Battery Monitoring | Compact Signal Conditioning |
Use Scenario: Li-ion battery pack monitor measuring cell voltages and temperature with microamp-level quiescent current budget. IC Role / Device Role / Timing Role: Precision ADC capturing cell voltage differentials (e.g., 0–5 V spans) using internal VCC as reference to simplify BOM. Use Value: 1 V minimum VREF support allows accurate measurement of partially discharged cells (<3 V) without external reference ICs. | Use Scenario: Embedded vibration sensor module digitizing piezoelectric accelerometer output in predictive maintenance edge device. IC Role / Device Role / Timing Role: Signal-chain ADC accepting high-Z AC-coupled sensor output with no external gain or filtering required. Use Value: 87 dB SNR and 125 kHz full-linear bandwidth preserve signal integrity for FFT-based spectral analysis up to 60 kHz. |
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 |
|---|---|---|---|
| ADS8860IDRCT | 16-bit, 1 MSPS, SPI interface, 1.8 V supply, 0.65 mW @ 100 kSPS; no auto shutdown; VREF internal/external selectable | Higher speed but higher power; requires dual-supply sequencing; optimized for high-throughput embedded systems | Select for designs needing >250 ksps or 1.8 V logic compatibility; avoid if ultra-low sleep current (<10 μA) is mandatory |
| MAX11100ETE+ | 16-bit, 250 ksps, SPI, 2.7–3.6 V supply, 1.25 mW @ 250 ksps; built-in reference; no differential input | Single-ended only; integrated 2.048 V reference eliminates external VREF circuitry; lower supply voltage range | Select for cost-sensitive, single-ended sensor interfaces with fixed 2.048 V span; avoid for differential or wide-VREF-range applications |
Compared with ADS8860IDRCT and MAX11100ETE+, the LTC1864IMS8#TRPBF uniquely balances 250 ksps throughput, 850 μA active current, 2 μA sleep current, true differential input, and 1–5 V VREF flexibility - making it optimal for battery-powered, noise-immune, precision measurement where supply headroom and reference adaptability are constrained.
Availability
LTC1864IMS8#TRPBF is available at Aetrix Electronics and suitable for portable instrumentation, isolated data acquisition, and low-power battery monitoring requiring stable component supply, long-term lifecycle support, and guaranteed industrial temperature grade (–40°C to +85°C).
Supply support for LTC1864IMS8#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. (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors, formed through the acquisition of Linear Technology in 2017.
The LTC1864IMS8#TRPBF belongs to ADI's legacy Linear Technology precision data acquisition product line, designed specifically for ultra-low-power, high-resolution measurement in space- and energy-constrained embedded systems.
FAQ
What is the maximum sampling frequency supported by the LTC1864IMS8#TRPBF?
The LTC1864IMS8#TRPBF supports a maximum sampling frequency of 250 ksps under recommended operating conditions (VCC = 5 V, TA ≤ +85°C). At this rate, conversion time is 2.75–3.3 μs and supply current is 850 μA typical. Performance remains guaranteed across the full –40°C to +85°C temperature range.
Does the LTC1864IMS8#TRPBF require an external reference voltage?
Yes, the LTC1864IMS8#TRPBF requires an external reference voltage applied to the VREF pin (Pin 1). It accepts VREF from 1 V to 5 V, defining the full-scale differential input range. When VREF = VCC, the device supports rail-to-rail input spans; no internal reference is provided.
How does the auto shutdown feature work on the LTC1864IMS8#TRPBF?
The LTC1864IMS8#TRPBF automatically powers down between conversions when the CONV pin is held high after conversion completion. This reduces supply current from 850 μA (at 250 ksps) to just 2 μA at 1 ksps. The device wakes instantly on the next CONV rising edge, with no startup delay.
Can the LTC1864IMS8#TRPBF interface directly with a microcontroller SPI port?
Yes, the LTC1864IMS8#TRPBF uses a standard 3-wire SPI/MICROWIRE-compatible interface (CONV, SCK, SDO) with no chip select required. It outputs data on SCK falling edges and is compatible with common MCU SPI peripherals - including those in STM32, PIC, and MSP430 families - without protocol translation.
What is the guaranteed integral nonlinearity (INL) specification for the LTC1864IMS8#TRPBF?
The LTC1864IMS8#TRPBF has a guaranteed integral nonlinearity (INL) of ±8 LSB maximum over the full operating temperature range (–40°C to +85°C). This corresponds to <0.012% of full scale and ensures monotonic behavior and high-accuracy calibration across industrial environments.
LTC1864IMS8#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 250k
- Number of Inputs:
- 1
- Input Type:
- Single Ended
- Data Interface:
- SPI
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External
- Voltage - Supply, Analog:
- 5V
- Voltage - Supply, Digital:
- 5V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 8-MSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC1864IMS8#TRPBF FAQ
1.How can I place an order for LTC1864IMS8#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1864IMS8#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 LTC1864IMS8#TRPBF reliable?
The price and inventory of LTC1864IMS8#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1864IMS8#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC1864IMS8#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1864IMS8#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1864IMS8#TRPBF?
LTC1864IMS8#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1864IMS8#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 LTC1864IMS8#TRPBF?
For technical support, including LTC1864IMS8#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1864IMS8#TRPBF requirements.
6.How does Aetrix verify that LTC1864IMS8#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC1864IMS8#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 LTC1864IMS8#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC1864IMS8#TRPBF?
All LTC1864IMS8#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1864IMS8#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 LTC1864IMS8#TRPBF part is unused and in its original packaging.
Return procedure for LTC1864IMS8#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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