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Analog Devices Inc. LTC1199IS8#TRPBF
- Part No.:
- LTC1199IS8#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LTC1199IS8#TRPBF.pdf
- Description:
- IC ADC 10BIT SAR 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,397
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Product details
Overview
LTC1199IS8#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 uses an SPI/MICROWIRE-compatible 4-wire serial interface. It targets battery-powered data acquisition in portable instrumentation where low power and compact size are critical.
For engineers reviewing the LTC1199IS8#TRPBF datasheet, LTC1199IS8#TRPBF pinout, LTC1199IS8#TRPBF application, or LTC1199IS8#TRPBF equivalent, this page delivers verified specifications, package-validated pin functions, real-world use scenarios, and two confirmed alternative parts for design flexibility in low-voltage, high-speed sampling systems.
Technical Context
The LTC1199IS8#TRPBF implements a switched-capacitor SAR architecture with on-chip sample-and-hold and a software-configurable 2-channel MUX. Its reference is internally tied to VCC, eliminating external reference components and simplifying unipolar ground-referenced or differential measurements between CH0 and CH1.
It uses a synchronous half-duplex 4-wire serial interface (CS, CLK, DIN, DOUT) with start-bit–driven configuration. Conversion is initiated by a falling CS edge followed by a 4-bit input word (SGL/DIFF, ODD/SIGN, dummy, start), enabling flexible channel selection without additional control logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit - guarantees monotonic output and no missing codes across full temperature range. |
| Max Sampling Rate | 250ksps at VCC = 2.7V - supports real-time capture of audio-band and sensor signals in portable devices. |
| Supply Current | 0.8mA typical at 250ksps - enables >1-year battery life in coin-cell–powered systems sampling at 1ksps. |
| Input Range | 0V to VCC (unipolar) - allows direct connection to rail-to-rail sensors without level-shifting circuitry. |
| INL / DNL | ±1LSB / ±1LSB - ensures accurate amplitude fidelity for precision measurement applications. |
| SNR + THD | 58dB / –60dB at 50kHz - sufficient for 9.5 ENOB in industrial sensor front-ends. |
| Package | 8-pin MSOP (3mm × 3mm) - fits space-constrained PCB layouts while maintaining thermal performance. |
Pinout & Package
Package: 8-lead plastic MSOP (MS8), 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 mode; includes sample-and-hold capacitor. |
| 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 signals and reference; requires dedicated low-impedance plane. |
| 5 - DIN | Digital Input | Receives 4-bit configuration word (start, SGL/DIFF, ODD/SIGN, dummy) after CS fall. |
| 6 - DOUT | Digital Output | Serial MSB-first output of 10-bit result; tri-states when CS is high or during setup. |
| 7 - CLK | Serial Clock Input | Synchronizes all data transfers; rising edge clocks DIN and latches DOUT. |
| 8 - VCC | Positive Supply | 2.7V to 4V supply; also serves as internal reference voltage source for ADC core. |
Key Features
| Feature | Design Value |
|---|---|
| Software-selectable 2-channel MUX | Enables single-ended (CH0–GND or CH1–GND) or true differential (CH0–CH1) acquisition via 4-bit command - no external switches or routing required. |
| Auto shutdown between conversions | Reduces supply current linearly with sampling frequency - drops to ~3µA at 1Hz, extending battery life in duty-cycled systems. |
| VCC-referenced architecture | Eliminates need for external voltage reference or buffer amplifier - reduces BOM count and layout area in cost-sensitive designs. |
| SPI/MICROWIRE compatibility | Interoperates directly with common microcontrollers (e.g., STM32, MSP430) without protocol translation or glue logic. |
| Low 0.8mA active current @ 250ksps | Permits use in energy-harvesting or solar-charged systems where average power budget is <100µW. |
Applications
| Portable ECG Monitor | Smart Sensor Node |
|---|---|
|
Use Scenario: Continuous 250ksps sampling of amplified biopotential signals from dry electrodes in a handheld cardiac monitor. IC Role / Device Role / Timing Role: Primary ADC capturing lead-II differential waveform; MUX selects between electrode pairs for multi-lead derivation. Use Value: 10-bit resolution and 58dB SNR preserve QRS complex morphology; 0.8mA draw enables >8-hour operation on 200mAh Li-ion cell. |
Use Scenario: Battery-powered environmental node measuring temperature (via RTD), humidity (capacitive), and pressure (piezoresistive) in rotating machinery. IC Role / Device Role / Timing Role: Shared ADC resource time-multiplexed across three analog channels using software-controlled MUX. Use Value: Single-supply 2.7V operation eliminates level shifters; auto shutdown cuts average current to 2µA during 99% idle time. |
| Industrial PLC I/O Module | Wearable Motion Tracker |
|
Use Scenario: Compact 4-channel analog input module for retrofitting legacy 24V DC PLCs with isolated 0–10V sensor interfaces. IC Role / Device Role / Timing Role: Front-end digitizer for isolated op-amp outputs; SPI interface connects directly to ARM Cortex-M4 host MCU. Use Value: MSOP-8 footprint minimizes board area; 250ksps supports oversampling for noise reduction in noisy factory environments. |
Use Scenario: Ultra-thin wristband collecting synchronized accelerometer and gyroscope data at 200Hz for gesture recognition. IC Role / Device Role / Timing Role: Low-power ADC digitizing conditioned analog outputs from MEMS motion sensors before digital fusion. Use Value: 2.7V operation matches coin-cell voltage profile; 10-bit depth preserves dynamic range for low-g vibration detection. |
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 interface, no internal MUX. | Lower resolution limits use in precision sensor applications; lacks channel selection capability. | Select when 8-bit accuracy suffices and system already uses TI's ADS78xx family for consistency. |
| MAX11100ETE+ | 10-bit, 500ksps, 2.7–3.6V supply, internal reference, no MUX, 12-pin TDFN. | Higher speed but no multiplexer; requires external signal routing for multi-channel inputs. | Prefer when sampling rate >250ksps is mandatory and board space allows larger 3×3mm TDFN package. |
Compared with LTC1199IS8#TRPBF, ADS7822U trades resolution and integration for lower cost and established TI support, while MAX11100ETE+ offers higher speed at the expense of MUX functionality and increased package footprint - both require layout changes and firmware adaptation.
Availability
LTC1199IS8#TRPBF is available at Aetrix Electronics and suitable for portable instrumentation, battery-operated sensor nodes, and industrial PLC I/O modules requiring stable component supply, long-term lifecycle assurance, and RoHS-compliant sourcing.
Supply support for LTC1199IS8#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 LTC1199 series belongs to ADI's precision data acquisition product line, designed specifically for ultra-low-power, high-speed sampling in space- and energy-constrained embedded systems.
FAQ
What is the maximum clock frequency supported by the LTC1199IS8#TRPBF?
The LTC1199IS8#TRPBF supports a maximum clock frequency of 3.5MHz when operating from a 2.7V supply. This corresponds to a 250ksps sampling rate and ensures guaranteed timing margins for setup/hold and conversion completion. Exceeding 3.5MHz may cause invalid conversions or increased INL error, especially at temperature extremes.
Does the LTC1199IS8#TRPBF require an external voltage reference?
No, the LTC1199IS8#TRPBF does not require an external voltage reference. Its reference is internally tied to the VCC pin, making it a self-contained 10-bit ADC solution for unipolar 0V to VCC input ranges. This eliminates external reference ICs, decoupling capacitors, and associated layout complexity.
Can the LTC1199IS8#TRPBF perform differential measurements between CH0 and CH1?
Yes, the LTC1199IS8#TRPBF can perform true differential measurements between CH0 and CH1. When configured via the SGL/DIFF bit in the 4-bit input word, the ADC measures the voltage difference (CH0 – CH1) with respect to GND, supporting bipolar signal acquisition without external amplifiers.
What is the supply current of the LTC1199IS8#TRPBF at 1ksps sampling rate?
At 1ksps, the LTC1199IS8#TRPBF draws approximately 3.2µA - derived from its linear auto-shutdown characteristic (0.8mA at 250ksps → ~3.2µA at 1ksps). This ultra-low quiescent current enables multi-year operation in energy-harvesting or intermittently powered IoT endpoints.
Is the LTC1199IS8#TRPBF pin-compatible with the LTC1199CS8?
Yes, the LTC1199IS8#TRPBF is pin-compatible with the LTC1199CS8. Both are 8-pin MSOP packages with identical pinout and electrical interface. The primary difference is temperature grade: LTC1199IS8#TRPBF is rated for –45°C to +85°C, while LTC1199CS8 is commercial grade (0°C to +70°C).
LTC1199IS8#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm 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-SO
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC1199IS8#TRPBF FAQ
1.How can I place an order for LTC1199IS8#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1199IS8#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 LTC1199IS8#TRPBF reliable?
The price and inventory of LTC1199IS8#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1199IS8#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC1199IS8#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1199IS8#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1199IS8#TRPBF?
LTC1199IS8#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1199IS8#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 LTC1199IS8#TRPBF?
For technical support, including LTC1199IS8#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1199IS8#TRPBF requirements.
6.How does Aetrix verify that LTC1199IS8#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC1199IS8#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 LTC1199IS8#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC1199IS8#TRPBF?
All LTC1199IS8#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1199IS8#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 LTC1199IS8#TRPBF part is unused and in its original packaging.
Return procedure for LTC1199IS8#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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