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Analog Devices Inc. LTC1199CS8#PBF
- Part No.:
- LTC1199CS8#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LTC1199CS8#PBF.pdf
- Description:
- IC ADC 10BIT SAR 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,105
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Product details
Overview
LTC1199CS8#PBF 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 an 8-pin MSOP package for compact, battery-powered data acquisition systems.
For engineers reviewing the LTC1199CS8#PBF datasheet, LTC1199CS8#PBF pinout, LTC1199CS8#PBF application, or LTC1199CS8#PBF 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 guaranteed 10-bit no-missing-codes performance over 0°C to 70°C.
Technical Context
The LTC1199CS8#PBF implements a switched-capacitor SAR architecture with integrated sample-and-hold and a 2-channel analog multiplexer. Its digital interface uses a synchronous half-duplex 4-wire protocol (CS, CLK, DIN, DOUT), where a 4-bit configuration word selects input channel and mode before conversion.
It operates exclusively with VCC as the reference voltage (no external VREF pin), supports unipolar transfer only, and achieves micropower operation via automatic shutdown between conversions-supply current scales linearly with sampling frequency down to sub-µA standby levels.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit, guaranteed no missing codes-ensures monotonicity and deterministic code transitions across full scale. |
| Max Sampling Rate | 250ksps at VCC = 2.7V-supports real-time capture of signals up to ~125kHz Nyquist bandwidth. |
| Supply Voltage | 2.7V to 4V-enables direct integration into 3V logic and low-voltage battery systems without level-shifting. |
| Power Dissipation | 2.2mW typical at 250ksps-reduces thermal load and extends battery life in portable instrumentation. |
| Input Configuration | Software-selectable 2-channel MUX (CH0, CH1, CH0–CH1, GND)-eliminates need for external analog switches in dual-sensor monitoring. |
| Reference Source | Internal VCC-referenced-removes external reference IC, simplifies BOM, and ensures ratiometric accuracy with supply. |
| Serial Interface | SPI/MICROWIRE-compatible 4-wire (CS/CLK/DIN/DOUT)-interoperates with common microcontrollers without protocol translation. |
Pinout & Package
Package: 8-lead 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 | Analog Input Channel 0 | Positive input for single-ended or differential measurement; high-impedance (>1GΩ) sample-and-hold node. |
| 3 - CH1 | Analog Input Channel 1 | Positive input for CH1 single-ended mode; negative input for CH0–CH1 differential mode-no sample-and-hold. |
| 4 - GND | Analog Ground | Primary return path for analog circuitry; must connect directly to low-impedance analog ground plane. |
| 5 - DIN | Digital Data Input | Receives 4-bit configuration word (start bit + SGL/DIFF + ODD/SIGN + dummy) on rising CLK edges. |
| 6 - DOUT | Digital Data Output | Outputs 10-bit conversion result MSB-first after null bits; tri-states when CS is high. |
| 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 & Reference | Single 2.7V–4V supply; internally used as ADC reference voltage-ratiometric accuracy ties conversion to supply stability. |
Key Features
| Feature | Design Value |
|---|---|
| Auto shutdown between conversions | Reduces supply current linearly with sampling frequency-enables µA-level average current in burst-mode sensing. |
| Integrated 2-channel analog MUX | Configurable via serial command-supports flexible sensor routing (e.g., temperature + voltage) without external components. |
| VCC-referenced conversion | Eliminates external reference IC and associated noise/accuracy trade-offs-ideal for supply-ratiometric measurements. |
| Guaranteed 10-bit no-missing-codes | Ensures monotonic output across full operating range-critical for closed-loop control and precision threshold detection. |
| MSOP-8 package | 3mm × 3mm footprint with 0.65mm pitch-enables high-density PCB layouts in space-constrained portable devices. |
Applications
| Industrial Sensor Monitoring | Portable Medical Instrumentation |
|---|---|
Use Scenario: Continuous monitoring of two independent analog sensors (e.g., pressure and temperature) in a PLC I/O module. IC Role / Device Role / Timing Role: Dual-channel sampling ADC with software-selectable input routing and ratiometric accuracy tied to system 3.3V rail. Use Value: Reduces component count by integrating MUX and reference, while 2.2mW power enables fanless enclosure design. | Use Scenario: Battery-powered ECG front-end acquiring lead-I and lead-II differential signals alternately. IC Role / Device Role / Timing Role: Low-power 10-bit ADC performing time-interleaved CH0–CH1 differential conversions at 200ksps. Use Value: Micropower shutdown between samples extends AA battery life beyond 12 months in intermittent-use devices. |
| Automotive Cabin Environment Sensing | Smart Energy Metering Subsystem |
Use Scenario: Simultaneous cabin air quality (CO₂ sensor) and humidity (capacitive sensor) readout in automotive HVAC control unit. IC Role / Device Role / Timing Role: Ratiometric ADC converting two single-ended sensor outputs referenced to same 3.3V supply. Use Value: VCC-referenced architecture rejects common-mode supply ripple-improves long-term calibration stability over vehicle lifetime. | Use Scenario: Auxiliary voltage/current monitoring channel in a Class 0.5 smart electricity meter for tamper detection. IC Role / Device Role / Timing Role: Precision 10-bit sampling ADC capturing waveform snapshots during event-triggered diagnostics. Use Value: Guaranteed no-missing-codes and ±1 LSB linearity ensure accurate RMS calculation for billing-grade validation. |
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 interface, no integrated MUX | Lacks channel selection flexibility; lower resolution limits dynamic range in precision sensing | Select when 8-bit accuracy suffices and board space allows external MUX |
| MAX11100ETE+ | 12-bit resolution, 500ksps, 2.7V–3.6V supply, internal reference, no MUX | Higher resolution but requires external analog switching for dual inputs; larger TQFN-16 package | Select when >10-bit ENOB is required and MUX can be implemented externally |
Compared with ADS7822U and MAX11100ETE+, the LTC1199CS8#PBF uniquely combines 10-bit precision, integrated 2-channel MUX, VCC-referenced operation, and MSOP-8 packaging-making it optimal for cost- and space-sensitive dual-input systems where 12-bit resolution is unnecessary.
Availability
LTC1199CS8#PBF is available at Aetrix Electronics and suitable for industrial sensor monitoring, portable medical instrumentation, automotive cabin environment sensing, and smart energy metering subsystems requiring stable component supply and long-term manufacturability.
Supply support for LTC1199CS8#PBF 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.
The LTC1199CS8#PBF belongs to ADI's legacy Linear Technology precision data acquisition product line, designed specifically for low-power, space-constrained applications requiring integrated analog multiplexing and ratiometric ADC functionality.
FAQ
What is the maximum clock frequency supported by the LTC1199CS8#PBF?
The LTC1199CS8#PBF supports a maximum clock frequency of 3.5MHz when operated at VCC = 2.7V. This limit scales with supply voltage-higher VCC allows higher fCLK, up to 7.2MHz at 5V-but the LTC1199CS8#PBF is specified only for 2.7V–4V operation. Exceeding 3.5MHz at 2.7V risks timing violations and conversion errors.
Does the LTC1199CS8#PBF require an external reference voltage?
No, the LTC1199CS8#PBF does not require an external reference voltage. It uses VCC as the internal reference source, making it inherently ratiometric. This eliminates the need for a separate reference IC and simplifies layout, though supply rail stability directly impacts absolute accuracy.
How does the LTC1199CS8#PBF handle channel selection during conversion?
The LTC1199CS8#PBF accepts a 4-bit configuration word via DIN: start bit, SGL/DIFF bit, ODD/SIGN bit, and dummy bit. This word determines whether CH0, CH1, CH0–CH1 (differential), or GND is sampled. The LTC1199CS8#PBF executes the selected conversion immediately after receiving the word.
What is the guaranteed operating temperature range for the LTC1199CS8#PBF?
The LTC1199CS8#PBF is rated for operation from 0°C to 70°C (Commercial grade). This is confirmed by the "C" suffix in the part number and aligns with the LTC1199C/LTC1199LC specification group in the datasheet.
Can DIN and DOUT be tied together when using the LTC1199CS8#PBF?
Yes, DIN and DOUT can be tied together for 3-wire interface operation. The LTC1199CS8#PBF drives the shared line low on the 4th falling CLK edge after the start bit, so the host MCU must configure the pin as input before that edge to avoid bus contention. This reduces I/O pin count without sacrificing functionality.
LTC1199CS8#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 8-SOIC (0.154", 3.90mm Width)
- Packaging:
- Tube
- 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#PBF FAQ
1.How can I place an order for LTC1199CS8#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1199CS8#PBF 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#PBF reliable?
The price and inventory of LTC1199CS8#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1199CS8#PBF is usually 5 days.
3.What payment methods are accepted for LTC1199CS8#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1199CS8#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1199CS8#PBF?
LTC1199CS8#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1199CS8#PBF 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#PBF?
For technical support, including LTC1199CS8#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1199CS8#PBF requirements.
6.How does Aetrix verify that LTC1199CS8#PBF is sourced from the original manufacturer or authorized distributors?
All LTC1199CS8#PBF 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#PBF meets industry standards.
7.What is the process for return or replacement of LTC1199CS8#PBF?
All LTC1199CS8#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1199CS8#PBF, 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#PBF part is unused and in its original packaging.
Return procedure for LTC1199CS8#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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