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Analog Devices Inc. LTC1199IMS8#TRPBF
- Part No.:
- LTC1199IMS8#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC1199IMS8#TRPBF.pdf
- Description:
- IC ADC 10BIT SAR 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,785
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Product details
Overview
LTC1199IMS8#TRPBF from Analog Devices (formerly Linear Technology) is a 10-bit, 250ksps successive approximation ADC with integrated 2-channel analog multiplexer and auto shutdown. It operates from a single 2.7V supply, draws only 0.8mA at full speed, and features SPI/MICROWIRE-compatible 4-wire serial interface. It is used in portable data acquisition systems where low power, compact size, and dual-channel sampling are required.
For engineers reviewing the LTC1199IMS8#TRPBF datasheet, LTC1199IMS8#TRPBF pinout, LTC1199IMS8#TRPBF application, or LTC1199IMS8#TRPBF equivalent, key selection criteria include its 2.7V operation, 250ksps sampling rate, MSOP-8 package, software-selectable MUX configuration, and guaranteed 10-bit no-missing-codes performance over –40°C to 85°C.
Technical Context
The LTC1199IMS8#TRPBF implements a switched-capacitor SAR architecture with on-chip sample-and-hold and a 2-channel analog multiplexer. Its reference is internally tied to VCC, eliminating external reference components for ratiometric measurements.
It uses a synchronous half-duplex 4-wire serial interface (CS, CLK, DIN, DOUT) compatible with SPI and MICROWIRE protocols. Conversion is initiated by a start bit followed by a 3-bit configuration word selecting channel and mode (single-ended/differential), then outputs 10-bit MSB-first data after two null bits.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit, guaranteed no missing codes - ensures monotonicity and full code coverage across full input range. |
| Max Sampling Rate | 250ksps at 2.7V - supports real-time monitoring of signals up to ~125kHz Nyquist bandwidth. |
| Supply Voltage | 2.7V to 4V - enables direct integration into 3V battery-powered or low-voltage embedded systems. |
| Supply Current | 0.8mA typical at 250ksps - enables >1000hr operation on a 800mAh coin cell when duty-cycled. |
| INL / DNL | ±1LSB / ±1LSB - maintains linearity critical for precision sensor digitization without calibration. |
| SNR + THD | 58dB / –60dB at 50kHz - suitable for medium-fidelity industrial sensor interfaces and portable instrumentation. |
| Operating Temp | –40°C to 85°C - qualified for industrial temperature-grade deployment in harsh environments. |
Pinout & Package
Package: 8-pin MSOP (MS8), 3mm × 3mm footprint, 0.65mm pitch, exposed pad not electrically connected.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - CS | Chip Select Input | Active-low enable; high state forces automatic shutdown, reducing current to <3µA. |
| 2 - CH0 (+IN) | Analog Input Channel 0 | Positive input for single-ended or differential measurement; includes sample-and-hold. |
| 3 - CH1 (–IN) | Analog Input Channel 1 | Positive/negative input per MUX configuration; no sample-and-hold - must remain stable during conversion. |
| 4 - GND | Analog Ground | Reference return for analog circuitry; must connect directly to low-impedance analog ground plane. |
| 5 - DIN | Digital Input | Receives 4-bit configuration word (start + SGL/DIFF + ODD/SIGN + dummy) on rising CLK edges. |
| 6 - DOUT | Digital Output | Outputs 10-bit conversion result MSB-first; tri-stated when CS high or during setup. |
| 7 - CLK | Serial Clock Input | Synchronizes all data transfers; max 3.5MHz at 2.7V; timing-critical for setup/hold compliance. |
| 8 - VCC | Positive Supply | 2.7V–4V supply; also serves as internal reference voltage source (VREF = VCC). |
Key Features
| Feature | Design Value |
|---|---|
| Software-Selectable 2-Channel MUX | Configurable via 3-bit command to measure CH0–GND, CH1–GND, CH0–CH1, or CH1–CH0 - eliminates external analog switches. |
| Auto Shutdown Between Conversions | Supply current scales linearly with sampling frequency - drops to <3µA at standby, enabling true micropower system design. |
| VCC-Referenced Internal Reference | Removes need for external reference IC or resistor divider - simplifies BOM and layout for ratiometric sensor applications. |
| MSOP-8 Small Footprint | 3mm × 3mm body with 0.65mm pitch - fits space-constrained portable medical, wearables, and IoT edge nodes. |
| SPI/MICROWIRE Compatibility | No glue logic required - interoperates directly with common microcontrollers (e.g., STM32, MSP430, nRF52) using standard peripheral drivers. |
Applications
| Portable Data Loggers | Industrial Sensor Interfaces |
|---|---|
Use Scenario: Battery-powered environmental monitor logging temperature, humidity, and pressure every 100ms. IC Role / Device Role / Timing Role: Dual-channel ADC digitizing analog sensor outputs with ratiometric accuracy against VCC-supplied reference. Use Value: 0.8mA active current and auto shutdown extend battery life beyond 1 year on a CR2032 cell. |
Use Scenario: PLC analog input module measuring 4–20mA loop sensors and thermocouple outputs. IC Role / Device Role / Timing Role: Precision front-end converter supporting both single-ended and differential modes for noise rejection in noisy factory floors. Use Value: ±1LSB INL ensures <0.1% measurement error without calibration, reducing firmware complexity and field service cost. |
| Wearable Health Monitors | Smart Energy Meters |
Use Scenario: Optical heart-rate sensor (PPG) with dual photodiode inputs requiring synchronized sampling. IC Role / Device Role / Timing Role: Simultaneous sampling of ambient and signal channels via software-controlled MUX switching. Use Value: 250ksps rate captures pulse waveform details while MSOP-8 footprint enables ultra-thin wristband integration. |
Use Scenario: Residential electricity meter digitizing voltage and current transformer outputs for RMS and harmonic analysis. IC Role / Device Role / Timing Role: Dual-channel acquisition feeding DSP for real-time power quality metrics (THD, ENOB). Use Value: 58dB SNR + THD meets IEC 62053-22 Class 0.5 accuracy requirements for revenue-grade metering. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 10-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7822U | 8-bit resolution, 200ksps, 2.7–5.25V supply, SPI-only interface, no MUX | Lacks channel selection; lower resolution limits dynamic range for sensor applications requiring >256 steps | Select when cost sensitivity outweighs resolution needs and dual-channel functionality is unnecessary. |
| MAX11100ETE+ | 12-bit resolution, 500ksps, 2.7–3.6V supply, internal reference, no MUX, 12-pin TDFN | Higher resolution and speed but no integrated multiplexer - requires external analog switch for multi-channel use | Select when higher ENOB (>7.2) is mandatory and board area allows larger package and added components. |
Compared with ADS7822U and MAX11100ETE+, the LTC1199IMS8#TRPBF uniquely balances 10-bit precision, dual-channel MUX integration, ultra-low 0.8mA active current, and MSOP-8 footprint - making it optimal for space- and power-constrained multi-sensor systems where external switching adds cost and noise.
Availability
LTC1199IMS8#TRPBF is available at Aetrix Electronics and suitable for portable instrumentation, industrial sensor interfaces, and wearable health monitors requiring stable component supply across extended product lifecycles.
Supply support for LTC1199IMS8#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, serving industrial, automotive, communications, and healthcare markets.
The LTC1199IMS8#TRPBF belongs to ADI's legacy Linear Technology precision data acquisition family, designed specifically for low-power, multi-channel, space-constrained embedded systems requiring reliable 10-bit performance without external support components.
FAQ
What is the maximum clock frequency supported by the LTC1199IMS8#TRPBF?
The LTC1199IMS8#TRPBF supports a maximum clock frequency of 3.5MHz when operating from a 2.7V supply. This limit ensures accurate conversion timing and maintains ±1LSB INL/DNL specifications across the full industrial temperature range. Exceeding this frequency may cause timing violations and degraded AC performance, particularly in SNR and THD.
Does the LTC1199IMS8#TRPBF require an external reference voltage?
No, the LTC1199IMS8#TRPBF does not require an external reference voltage. Its reference is internally tied to the VCC pin, making it inherently ratiometric. When VCC = 2.7V, the full-scale input range is 0V to 2.7V - ideal for direct interfacing with 3V-output sensors and eliminating reference ICs or dividers.
Can the LTC1199IMS8#TRPBF operate in differential mode?
Yes, the LTC1199IMS8#TRPBF supports differential measurement between CH0 and CH1 via software configuration. The 3-bit input command selects mode (SGL/DIFF bit) and polarity (ODD/SIGN bit), enabling four combinations: CH0–GND, CH1–GND, CH0–CH1, or CH1–CH0. Differential mode improves noise immunity in electrically noisy environments.
What is the shutdown current of the LTC1199IMS8#TRPBF?
The LTC1199IMS8#TRPBF draws less than 3µA in shutdown mode when CS is held high. This ultra-low quiescent current enables aggressive duty cycling in battery-powered applications - for example, sampling once per second reduces average current to ~0.2µA, extending CR2032 battery life beyond 10 years.
Is the LTC1199IMS8#TRPBF pin-compatible with the LTC1199CMS8?
Yes, the LTC1199IMS8#TRPBF is pin-compatible with the LTC1199CMS8. Both share identical MSOP-8 pinout, electrical interface, and functional behavior. The primary difference is temperature grade: LTC1199IMS8#TRPBF is rated for –40°C to 85°C, while LTC1199CMS8 is commercial grade (0°C to 70°C). No PCB changes are needed for drop-in replacement in industrial designs.
LTC1199IMS8#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:
- 10
- Sampling Rate (Per Second):
- 450k
- Number of Inputs:
- 1, 2
- Input Type:
- Differential, 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:
- 4V ~ 6V
- Voltage - Supply, Digital:
- 4V ~ 6V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 8-MSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC1199IMS8#TRPBF FAQ
1.How can I place an order for LTC1199IMS8#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1199IMS8#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 LTC1199IMS8#TRPBF reliable?
The price and inventory of LTC1199IMS8#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1199IMS8#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC1199IMS8#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1199IMS8#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1199IMS8#TRPBF?
LTC1199IMS8#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1199IMS8#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 LTC1199IMS8#TRPBF?
For technical support, including LTC1199IMS8#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1199IMS8#TRPBF requirements.
6.How does Aetrix verify that LTC1199IMS8#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC1199IMS8#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 LTC1199IMS8#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC1199IMS8#TRPBF?
All LTC1199IMS8#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1199IMS8#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 LTC1199IMS8#TRPBF part is unused and in its original packaging.
Return procedure for LTC1199IMS8#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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