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Analog Devices Inc. LTC1199CS8#TRPBF
- Part No.:
- LTC1199CS8#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LTC1199CS8#TRPBF.pdf
- Description:
- IC ADC 10BIT SAR 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,608
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Product details
Overview
LTC1199CS8#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, and SPI/MICROWIRE-compatible 4-wire serial interface. It features auto shutdown, 2.2mW typical power dissipation at full speed, and operates in the 0°C to 70°C temperature range. It is used in portable instrumentation for high-resolution sampling of dual sensor inputs.
For engineers reviewing the LTC1199CS8#TRPBF datasheet, LTC1199CS8#TRPBF pinout, LTC1199CS8#TRPBF application, or LTC1199CS8#TRPBF equivalent, key selection criteria include its 250ksps sampling rate at 2.7V, software-selectable MUX configuration (single-ended CH0/CH1 or differential), VCC-referenced internal reference, and MSOP-8 package compatibility with space-constrained embedded systems.
Technical Context
The LTC1199CS8#TRPBF implements a switched-capacitor SAR architecture with integrated sample-and-hold and a configurable 2-channel analog multiplexer. Its serial interface requires a start bit followed by a 3-bit control word (SGL/DIFF, ODD/SIGN, dummy) to select input mode and channel before conversion.
It uses VCC as its internal reference source-eliminating external reference components-and supports half-duplex 4-wire communication (CS, CLK, DIN, DOUT), with optional DIN/DOUT tie-together for 3-wire operation. Conversion time is fixed at 2.9µs, and acquisition timing depends on source impedance and clock frequency.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit - delivers 1024 discrete output codes with no missing codes guaranteed. |
| Max Sampling Rate | 250ksps at VCC = 2.7V - enables real-time capture of signals up to ~125kHz Nyquist bandwidth. |
| Supply Voltage | 2.7V to 4V - optimized for battery-powered systems; not rated for 5V operation. |
| Power Dissipation | 2.2mW typical at 250ksps - allows continuous sampling in ultra-low-power portable designs. |
| INL / DNL | ±1 LSB / ±1 LSB - ensures monotonicity and <0.1% integral linearity error across full scale. |
| SNR + Distortion | 58dB at 50kHz input - supports >9.3 effective bits (ENOB) for precision sensor digitization. |
| Reference Source | VCC-referenced - eliminates need for external voltage reference; full-scale = VCC. |
Pinout & Package
Package: 8-pin MSOP (MS8), 3mm × 3mm, 0.65mm pitch, exposed pad (not electrically connected).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 - CS | Chip Select Input | Active-low enable; initiates conversion sequence and powers up ADC core when pulled low. |
| 2 - CH0 (+IN) | Analog Input Channel 0 | Positive input for single-ended or differential measurement; includes sample-and-hold capacitor. |
| 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 | Primary return path for analog circuitry; must connect directly to low-impedance analog ground plane. |
| 5 - DIN | Digital Input | Receives 4-bit control word (start + SGL/DIFF + ODD/SIGN + dummy) on rising CLK edges. |
| 6 - DOUT | Digital Output | Serial MSB-first 10-bit result; tri-stated when CS is high or during acquisition phase. |
| 7 - CLK | Serial Clock Input | Synchronizes all data transfers; max 3.5MHz at 2.7V; duty cycle ≥40% required. |
| 8 - VCC | Positive Supply & Reference | Single 2.7V–4V supply; also serves as internal ADC reference - full-scale = VCC. |
Key Features
| Feature | Design Value |
|---|---|
| Software-Selectable 2-Channel MUX | Configurable via 3-bit control word to measure CH0 vs GND, CH1 vs GND, or CH0 vs CH1 - eliminates external analog switches. |
| VCC-Referenced Conversion | Uses supply rail as reference - removes need for precision external reference and associated layout complexity. |
| Auto Shutdown Between Conversions | Reduces supply current linearly with sampling frequency - draws only ~0.8mA at 250ksps and sub-µA in idle. |
| 3-Wire Interface Option | DIN and DOUT can be tied together with bidirectional MCU GPIO - saves PCB routing and MCU pin count. |
| MSOP-8 Package | 3mm × 3mm footprint with thermal pad - enables high-density placement in handheld and wearable devices. |
Applications
| Portable ECG Monitor | Industrial Temperature Sensor Hub |
|---|---|
Use Scenario: Simultaneous acquisition of lead-I and lead-II differential ECG signals in a handheld diagnostic device powered by a 3.0V coin cell. IC Role / Device Role / Timing Role: Dual-channel SAR ADC performing synchronized 250ksps sampling with software-selectable differential mode to reject common-mode noise. Use Value: 10-bit resolution and 58dB SNR enable detection of microvolt-level cardiac waveforms without external gain stages or reference ICs. | Use Scenario: Multi-sensor node collecting RTD and thermistor readings in a factory-floor wireless sensor transmitter operating from 2.7V lithium primary battery. IC Role / Device Role / Timing Role: Low-power MUX-ADC digitizing two analog temperature sources sequentially using VCC-referenced conversion to simplify BOM. Use Value: 2.2mW active power and auto shutdown extend battery life beyond 5 years while maintaining ±1 LSB linearity across 0°C–70°C. |
| Handheld Multimeter Front-End | Battery Management System Cell Monitor |
Use Scenario: Precision DC voltage and current measurement in a pocket-sized multimeter with autoranging and dual-input capability. IC Role / Device Role / Timing Role: Configurable ADC measuring either input channel against GND (single-ended) or difference between channels (differential) under firmware control. Use Value: Eliminates need for external MUX and reference IC, reducing component count and board area while supporting 0.1% measurement accuracy. | Use Scenario: Monitoring individual Li-ion cell voltages and inter-cell differentials in a 4S BMS module powered from stacked cell rails (~3.6V). IC Role / Device Role / Timing Role: High-accuracy, low-drift ADC sampling cell pairs with VCC-referenced full-scale matching nominal cell voltage. Use Value: ±1 LSB INL and ±2 LSB offset error ensure <10mV absolute voltage error - critical for state-of-charge estimation and balancing decisions. |
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, 2.7V–5.25V supply, SPI-only interface, no MUX | Lacks channel multiplexing and 10-bit resolution; suited for lower-accuracy, cost-sensitive systems | Select when 8-bit resolution suffices and MUX functionality is handled externally |
| MAX11100ETE+ | 10-bit, 500ksps, 2.7V–3.6V supply, internal reference, no MUX, TDFN-12 package | Higher speed but no integrated MUX; requires external signal routing and occupies larger footprint | Select when higher throughput is needed and dual-input switching is implemented at board level |
Compared with ADS7822U and MAX11100ETE+, the LTC1199CS8#TRPBF uniquely integrates a software-configurable 2-channel MUX with VCC-referenced 10-bit conversion in an ultra-small MSOP-8, making it optimal for space- and power-constrained dual-sensor applications where reference simplicity is critical.
Availability
LTC1199CS8#TRPBF is available at Aetrix Electronics and suitable for portable instrumentation, battery-operated sensor nodes, and handheld test equipment requiring stable component supply, long-term lifecycle support, and guaranteed traceable sourcing.
Supply support for LTC1199CS8#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 LTC1199CS8#TRPBF belongs to Linear Technology's legacy micropower SAR ADC product line, designed specifically for compact, battery-powered systems demanding high resolution, low supply voltage operation, and minimal external components.
FAQ
What is the maximum clock frequency supported by the LTC1199CS8#TRPBF?
The LTC1199CS8#TRPBF supports a maximum clock frequency of 3.5MHz when operated at VCC = 2.7V. This limit scales with supply voltage - exceeding it risks timing violations and conversion errors. The device requires a minimum clock high/low time of 40% of the period, and all timing parameters (e.g., tCYC = 14–16 clocks, tCONV = 2.9µs) are specified under this constraint. Always verify setup/hold times (tsuCS = 78ns, thCS = 40ns) in your system layout.
Does the LTC1199CS8#TRPBF require an external voltage reference?
No, the LTC1199CS8#TRPBF does not require an external voltage reference. It uses VCC as its internal reference source - full-scale input equals VCC. This simplifies design, reduces BOM count, and avoids reference drift or noise coupling. However, VCC must be stable and low-noise; a 1µF ceramic bypass capacitor placed close to the VCC and GND pins is mandatory for specified performance.
Can the LTC1199CS8#TRPBF operate with a 5V supply?
No, the LTC1199CS8#TRPBF is not rated for 5V operation. Its absolute maximum supply voltage is 4V, and recommended operating range is 2.7V to 4V. For 5V systems, use the pin-compatible LTC1199CS8 (non-L version), which supports 4V–6V operation and has different timing and dynamic specifications. Using 5V on LTC1199CS8#TRPBF violates Absolute Maximum Ratings and may cause permanent damage.
How does the multiplexer configuration work on the LTC1199CS8#TRPBF?
The LTC1199CS8#TRPBF accepts a 3-bit control word after a start bit on DIN to configure its MUX: SGL/DIFF selects single-ended (vs GND) or differential (CH0 vs CH1) mode; ODD/SIGN selects channel polarity; and the dummy bit extends acquisition time. Valid combinations are defined in the datasheet's MUX Address table. The control word is latched on the rising edge of CLK, and conversion begins immediately after the fourth clock cycle.
Is the LTC1199CS8#TRPBF pin-compatible with the LTC1197 series?
No, the LTC1199CS8#TRPBF is not pin-compatible with the LTC1197 series. While both use 8-pin MSOP/SO packages, their pin functions differ: LTC1199 uses Pin 5 for DIN and has no VREF pin, whereas LTC1197 uses Pin 5 for VREF and has no DIN. Swapping them will result in incorrect operation or damage. The LTC1199L series (e.g., LTC1199LCS8#TRPBF) is the direct pin-compatible variant for 2.7V–4V operation.
LTC1199CS8#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:
- 0°C ~ 70°C
- Supplier Device Package:
- 8-SO
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC1199CS8#TRPBF FAQ
1.How can I place an order for LTC1199CS8#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1199CS8#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 LTC1199CS8#TRPBF reliable?
The price and inventory of LTC1199CS8#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1199CS8#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC1199CS8#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1199CS8#TRPBF transactions.
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4.How is shipping managed for LTC1199CS8#TRPBF?
LTC1199CS8#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1199CS8#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 LTC1199CS8#TRPBF?
For technical support, including LTC1199CS8#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1199CS8#TRPBF requirements.
6.How does Aetrix verify that LTC1199CS8#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC1199CS8#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 LTC1199CS8#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC1199CS8#TRPBF?
All LTC1199CS8#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1199CS8#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 LTC1199CS8#TRPBF part is unused and in its original packaging.
Return procedure for LTC1199CS8#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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