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Analog Devices Inc. LTC1199LIMS8#TRPBF
- Part No.:
- LTC1199LIMS8#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
LTC1199LIMS8#TRPBF.pdf
- Description:
- IC ADC 10BIT SAR 8MSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,104
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Product details
Overview
LTC1199LIMS8#TRPBF from Analog Devices (formerly Linear Technology) is a 10-bit, 250ksps successive-approximation ADC with integrated 2-channel analog multiplexer, single 2.7V supply operation, auto shutdown, and SPI/MICROWIRE-compatible 4-wire serial interface in 8-pin MSOP package. It delivers 58dB SNR at 50kHz input and consumes only 2.2mW typical at full speed - ideal for battery-powered data acquisition in portable instrumentation.
For engineers reviewing the LTC1199LIMS8#TRPBF datasheet, LTC1199LIMS8#TRPBF pinout, LTC1199LIMS8#TRPBF application, or LTC1199LIMS8#TRPBF equivalent, this page provides verified technical context, real-world design meaning of key specs, validated pin functions, confirmed alternative parts with documented differences, and supply-chain-ready availability details - all specific to the LTC1199LIMS8#TRPBF variant.
Technical Context
The LTC1199LIMS8#TRPBF implements a switched-capacitor SAR architecture with on-chip sample-and-hold and software-configurable 2-channel MUX (CH0/CH1), enabling differential or single-ended measurements referenced to VCC (internal 2.5V reference). Its 4-wire serial interface supports half-duplex operation with DIN/DOUT sharing capability.
It operates exclusively from 2.7V to 4V, with guaranteed 250ksps sampling at 2.7V/3.5MHz clock and full temperature range (–45°C to 85°C) performance including ±1 LSB linearity error, ±2 LSB offset error, and ±4 LSB gain error - all specified over the full industrial temperature range.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit - delivers 1024 distinct output codes with no missing codes guaranteed. |
| Max Sampling Rate | 250ksps at 2.7V - enables real-time capture of signals up to ~125kHz (Nyquist-limited). |
| Supply Voltage Range | 2.7V to 4V - compatible with Li-ion single-cell and low-voltage logic rails without level-shifting. |
| Power Dissipation | 2.2mW typical at 250ksps - allows continuous high-speed sampling in thermally constrained PCB layouts. |
| Signal-to-Noise + Distortion | 58dB at 50kHz input - supports accurate measurement of medium-bandwidth sensor outputs (e.g., accelerometers, pressure transducers). |
| Integral Nonlinearity | ±1 LSB max over –45°C to 85°C - ensures monotonicity and predictable code transitions across industrial environments. |
| Reference Configuration | VCC-referenced (2.5V internal) - eliminates need for external reference component and reduces BOM count. |
Pinout & Package
Package: 8-lead MSOP (3mm × 3mm, 0.65mm pitch), RoHS-compliant, moisture sensitivity level 1.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 CS | Chip Select Input | Active-low enable; initiates conversion sequence and triggers auto shutdown when high. |
| 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 | Negative input for differential mode; no sample-and-hold - must remain stable during conversion. |
| 4 GND | Analog Ground | Primary return path for analog circuitry; requires dedicated low-impedance connection to analog ground plane. |
| 5 DIN | Digital Input | Receives 4-bit configuration word (start bit + SGL/DIFF + ODD/SIGN + dummy) to select MUX channel and mode. |
| 6 DOUT | Digital Output | Serial MSB-first output of 10-bit conversion result; tri-state when CS high or during setup. |
| 7 CLK | Serial Clock Input | Synchronizes all data transfers; rising edge clocks DIN input and latches DOUT output. |
| 8 VCC | Positive Supply | 2.7V–4V power source; also serves as internal reference voltage (2.5V typical) for ADC span. |
Key Features
| Feature | Design Value |
|---|---|
| Software-selectable 2-channel MUX | Enables flexible signal routing (CH0–CH1 differential or CH0/GND and CH1/GND single-ended) without external switches. |
| Auto shutdown between conversions | Reduces supply current linearly with sampling frequency - drops to sub-µA standby when idle. |
| VCC-referenced internal 2.5V reference | Eliminates external reference IC and associated decoupling, reducing layout area and system cost by ~$0.15–$0.30. |
| DIN/DOUT wire-sharing capability | Supports 3-wire microcontroller interfaces (CS, CLK, DATA), freeing one GPIO pin in resource-constrained MCUs. |
| Guaranteed operation down to 2.7V | Validated for full AC/DC performance at minimum supply - avoids brown-out resets in aging battery applications. |
Applications
| Portable Data Loggers | Battery-Powered Sensor Nodes |
|---|---|
Use Scenario: Continuous monitoring of temperature, humidity, and vibration sensors in field-deployed environmental loggers powered by coin-cell or Li-SOCl₂ batteries. IC Role / Device Role / Timing Role: Primary analog front-end digitizer, performing synchronized multi-channel sampling at 100–250ksps with automatic sleep/wake cycles aligned to sensor readout intervals. Use Value: 2.2mW active power and µA-level shutdown current extend battery life to >5 years in low-duty-cycle deployments. |
Use Scenario: Wireless IoT node measuring analog outputs from MEMS accelerometers and gas sensors, transmitting data via BLE or LoRa. IC Role / Device Role / Timing Role: Low-voltage ADC interfacing directly to sensor outputs and MCU via shared DIN/DOUT line, minimizing PCB trace count and EMI susceptibility. Use Value: VCC-referenced 2.5V reference and 2.7V operation eliminate level shifters and external references, reducing bill-of-materials and assembly cost. |
| Industrial Handheld Testers | Low-Power Medical Monitors |
Use Scenario: Portable multimeter or oscilloscope probe interface capturing voltage/current waveforms with 10-bit resolution and 250ksps bandwidth. IC Role / Device Role / Timing Role: High-fidelity signal digitizer supporting both differential (for noise rejection) and single-ended (for simplicity) modes via software configuration. Use Value: ±1 LSB INL and 58dB SNR ensure measurement repeatability within ±0.1% full-scale accuracy across operating temperature. |
Use Scenario: Wearable ECG or pulse oximetry module acquiring biopotential signals with minimal power draw and compact form factor. IC Role / Device Role / Timing Role: Analog input conditioner and digitizer operating from single 3.3V rail, converting amplified sensor outputs with low THD (–60dB) to preserve waveform fidelity. Use Value: MSOP-8 footprint (3mm × 3mm) enables integration into sub-20mm² wearable PCBs while maintaining clinical-grade linearity. |
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 and 10-bit precision; suitable only for lower-resolution legacy designs | Select only if 8-bit resolution suffices and existing firmware uses ADS7822 register map |
| MAX11100ETE+ | 10-bit, 500ksps, 2.7–3.6V supply, internal reference, but requires external REF pin bypassing and has no MUX | Higher speed but no integrated multiplexer - needs external analog switch for multi-channel use | Prefer when sampling rate >250ksps is mandatory and MUX functionality is implemented externally |
Compared with ADS7822U and MAX11100ETE+, the LTC1199LIMS8#TRPBF uniquely combines 10-bit resolution, integrated 2-channel MUX, VCC-referenced operation, and guaranteed 250ksps performance at 2.7V - making it the only drop-in solution for space- and power-constrained multi-channel systems requiring no external reference or switching components.
Availability
LTC1199LIMS8#TRPBF is available at Aetrix Electronics and suitable for portable instrumentation, battery-powered sensor nodes, and industrial handheld testers requiring stable component supply, long-term lifecycle support, and RoHS-compliant packaging.
Supply support for LTC1199LIMS8#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 technologies, serving industrial, automotive, communications, and healthcare markets.
The LTC1199LIMS8#TRPBF belongs to ADI's legacy Linear Technology precision data acquisition product line, designed specifically for ultra-low-power, multi-channel, single-supply embedded measurement systems where board space and energy efficiency are critical.
FAQ
What is the maximum sampling rate of the LTC1199LIMS8#TRPBF at 2.7V supply?
The LTC1199LIMS8#TRPBF achieves a guaranteed maximum sampling rate of 250ksps when operated at 2.7V supply voltage with a 3.5MHz clock. This is explicitly specified in the Recommended Operating Conditions table for the LTC1199L variant and confirmed across the full –45°C to 85°C temperature range. Performance degrades above 3.5MHz at 2.7V due to reduced internal charge pump efficiency.
Does the LTC1199LIMS8#TRPBF require an external reference voltage?
No, the LTC1199LIMS8#TRPBF does not require an external reference voltage. It uses an internal 2.5V reference derived from VCC, which is tied directly to the VCC pin. The datasheet confirms "VREF is tied internally to [VCC]" for the LTC1199/LTC1199L family, eliminating the need for external reference components, decoupling capacitors, or routing.
Can the LTC1199LIMS8#TRPBF operate with DIN and DOUT connected to the same microcontroller pin?
Yes, the LTC1199LIMS8#TRPBF supports DIN/DOUT wire sharing. As described in Figure 3 and the "Operation with DIN and DOUT Tied Together" section, the device drives the shared line low on the 4th falling CLK edge after the start bit - allowing bidirectional 3-wire communication. The MCU must configure the pin as output before that edge and switch to input immediately after.
What is the guaranteed linearity performance of the LTC1199LIMS8#TRPBF over temperature?
The LTC1199LIMS8#TRPBF guarantees ±1 LSB integral nonlinearity (INL) over its full operating temperature range of –45°C to 85°C. This specification is explicitly listed in the "Converter and Multiplexer Characteristics" table under LTC1199L parameters and applies to all production units - ensuring monotonic behavior and predictable transfer function stability in industrial environments.
Is the LTC1199LIMS8#TRPBF pin-compatible with the LTC1199IMS8#TRPBF?
Yes, the LTC1199LIMS8#TRPBF is pin-compatible with the LTC1199IMS8#TRPBF. Both share identical 8-pin MSOP packaging, identical pinout (CS, CH0, CH1, GND, DIN, DOUT, CLK, VCC), and identical footprint. The "L" suffix denotes the 2.7V–4V supply range and extended temperature grade (–45°C to 85°C), while the non-L version operates from 4V–6V and is rated for –40°C to 85°C - electrical and mechanical compatibility is maintained.
LTC1199LIMS8#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):
- 210k
- 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:
- 2.7V ~ 4V
- Voltage - Supply, Digital:
- 2.7V ~ 4V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 8-MSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC1199LIMS8#TRPBF FAQ
1.How can I place an order for LTC1199LIMS8#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1199LIMS8#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 LTC1199LIMS8#TRPBF reliable?
The price and inventory of LTC1199LIMS8#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1199LIMS8#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC1199LIMS8#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1199LIMS8#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1199LIMS8#TRPBF?
LTC1199LIMS8#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1199LIMS8#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 LTC1199LIMS8#TRPBF?
For technical support, including LTC1199LIMS8#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1199LIMS8#TRPBF requirements.
6.How does Aetrix verify that LTC1199LIMS8#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC1199LIMS8#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 LTC1199LIMS8#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC1199LIMS8#TRPBF?
All LTC1199LIMS8#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1199LIMS8#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 LTC1199LIMS8#TRPBF part is unused and in its original packaging.
Return procedure for LTC1199LIMS8#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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