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Analog Devices Inc. LTC1198-1BCS8#TRPBF
- Part No.:
- LTC1198-1BCS8#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 8-SOIC (0.154", 3.90mm Width)
- Datasheet:
-
LTC1198-1BCS8#TRPBF.pdf
- Description:
- IC ADC 8BIT SAR 8SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:3,488
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Product details
Overview
LTC1198-1BCS8#TRPBF from Analog Devices (formerly Linear Technology) is an 8-bit, 750kHz sampling-rate successive approximation ADC with integrated sample-and-hold and software-selectable 2-channel multiplexer. It operates from a single 3V–6V supply, consumes 50mW at 5V, and features auto-shutdown drawing only 1nA typical quiescent current when idle. Its SO-8 package, 3-wire serial interface, and ground-referenced or differential input capability make it suitable for compact, battery-sensitive data acquisition in portable instrumentation.
For engineers reviewing the LTC1198-1BCS8#TRPBF datasheet, LTC1198-1BCS8#TRPBF pinout, LTC1198-1BCS8#TRPBF application, or LTC1198-1BCS8#TRPBF equivalent, key selection criteria include its 750kHz max sampling rate at 5V, ±1/2 LSB total unadjusted error over temperature, 2-channel MUX control via DIN, shutdown current spec, and SO-8 thermal performance (θJA = 175°C/W).
Technical Context
The LTC1198-1BCS8#TRPBF implements a switched-capacitor SAR architecture with on-chip sample-and-hold, supporting both single-ended and differential input modes selected via 2-bit DIN command. Its conversion timing is tightly coupled to external clock frequency - tCONV = 710ns at fCLK = 12MHz (5V), with full 8-bit resolution achieved within 8.5 clock cycles.
Digital interface uses edge-triggered 3-wire (CS, CLK, DOUT) plus DIN for channel configuration. CS high enables auto-shutdown; CS low initiates conversion sequence beginning with START bit detection, followed by 4-bit DIN word (SGL/DIFF + ODD/SIGN + dummy bits), then 2 null bits and 8-bit MSB-first result on DOUT.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 8-bit with no missing codes guaranteed |
| Max Sampling Rate | 750kHz at VCC = 5V; enables real-time capture of signals up to ~375kHz Nyquist bandwidth |
| Total Unadjusted Error | ±1/2 LSB over 0°C to 70°C - ensures monotonicity and simplifies calibration in ratiometric systems |
| Supply Current (Active) | 11mA typical at 5V, 1MHz sampling - defines PCB power delivery and thermal budget |
| Supply Current (Shutdown) | 1μA typical - allows microcontroller-gated operation in ultra-low-power wake-up architectures |
| S/(N+D) | 47dB at 500kHz input - sets usable dynamic range for medium-speed sensor digitization |
| Input Span Range | 0V to VCC (single-ended) or CH0–CH1 (differential) - eliminates need for external level-shifting in many front-end designs |
Pinout & Package
Package: 8-lead plastic SO (SO-8), 150°C max junction temperature, θJA = 175°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1: CS/SHUTDOWN | Chip select with integrated shutdown control | Logic HIGH disconnects internal power rails - reduces supply current to 1μA; requires clean digital transition to avoid metastability |
| 2: CH0 | Analog input channel 0 | High-impedance input (30pF); supports single-ended or differential acquisition relative to CH1 |
| 3: CH1 | Analog input channel 1 | Matches CH0 characteristics; enables differential measurement or dual single-ended sampling |
| 4: GND | Analog ground reference | Must connect directly to low-impedance analog ground plane - separates noise-sensitive analog return from digital return |
| 5: DIN | Serial data input for MUX configuration | Accepts 4-bit command on rising CLK edges to select SGL/DIFF mode and input polarity - required before each conversion |
| 6: DOUT | Serial data output | MSB-first 8-bit result appears after 2 null bits; tri-states when CS HIGH - enables bus sharing |
| 7: CLK | Master serial clock input | Edge-triggered; max 12MHz at 5V; duty cycle ≥40% required for reliable timing margins |
| 8: VCC/VREF | Power supply and reference voltage | Single pin serves both functions - requires local 1μF ceramic bypass to GND; sets full-scale range and supply rail |
Key Features
| Feature | Design Value |
|---|---|
| Auto-shutdown mode | Reduces active supply current from 11mA to 1μA during idle periods - extends battery life in portable systems without firmware intervention |
| Software-configurable 2-channel MUX | Enables runtime selection between CH0, CH1, or CH0–CH1 differential mode via 4-bit DIN command - eliminates external analog switches |
| Single-supply 3V–6V operation | Eliminates need for negative or precision reference supplies - simplifies power architecture in space-constrained designs |
| ±1/2 LSB total unadjusted error | Guarantees monotonic transfer function across 0°C to 70°C - removes need for per-unit gain/offset calibration in cost-sensitive applications |
| Integrated sample-and-hold | Provides full-accuracy input bandwidth of 1MHz - captures fast transients without external hold circuitry |
Applications
| Portable Instrumentation | Disk Drive Read Channel Monitoring |
|---|---|
Use Scenario: Handheld multimeter acquiring voltage, current, and temperature readings with <1-second update rate. IC Role / Device Role / Timing Role: Primary ADC digitizing conditioned sensor outputs; performs 750ksps sampling synchronized to microcontroller SPI clock. Use Value: Auto-shutdown cuts average current to <10μA between measurements - enabling >1-year battery life on two AA cells. | Use Scenario: Real-time monitoring of preamplifier output signal integrity during disk drive head positioning. IC Role / Device Role / Timing Role: High-speed diagnostic ADC capturing transient anomalies in read channel analog path at sub-microsecond intervals. Use Value: 750kHz sampling captures 10x oversampled waveforms for jitter analysis - improving servo loop stability diagnostics. |
| Battery-Operated Data Loggers | Industrial Sensor Interface Modules |
Use Scenario: Remote environmental sensor node logging temperature, humidity, and pressure every 10 seconds using intermittent wake-up. IC Role / Device Role / Timing Role: Low-power ADC activated only during sensor acquisition burst; shuts down automatically between samples. Use Value: 1μA shutdown current minimizes quiescent drain - extending 3.6V Li-ion cell life to >5 years in sleep-dominated operation. | Use Scenario: DIN-rail mounted module converting 4–20mA industrial current loops and thermocouple outputs for PLC input cards. IC Role / Device Role / Timing Role: Dual-channel front-end ADC supporting both current-loop voltage drop and cold-junction compensation measurements. Use Value: Software-selectable MUX allows single IC to handle multiple sensor types - reducing BOM count and board area vs discrete solutions. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7822U | 2.7V–5.25V supply; 1MSPS; SPI-compatible 3-wire interface; no auto-shutdown | Requires external power gating for low-quiescent operation; lacks integrated MUX | Preferred when higher sampling rate is critical and system-level shutdown control is already implemented |
| MAX1113ECUA+ | 2.7V–3.6V supply only; 1.2MSPS; 8-pin μMAX; no MUX; 2.5V internal reference | Not compatible with 5V systems; fixed reference limits ratiometric flexibility; smaller package increases layout complexity | Selected for ultra-compact 3V-only designs where board space is more constrained than supply voltage range |
Compared with ADS7822U and MAX1113ECUA+, the LTC1198-1BCS8#TRPBF uniquely combines 5V operation, auto-shutdown, and dual-channel MUX in SO-8 - making it optimal for cost-sensitive, battery-aware systems requiring flexible analog input routing without external logic.
Availability
LTC1198-1BCS8#TRPBF is available at Aetrix Electronics and suitable for portable instrumentation, disk drive diagnostics, and battery-operated data loggers requiring stable component supply across extended production lifecycles.
Supply support for LTC1198-1BCS8#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 LTC1198-1BCS8#TRPBF belongs to ADI's legacy Linear Technology precision data acquisition product line, engineered for compact, low-power, high-speed sampling in space- and energy-constrained embedded systems.
FAQ
What is the maximum clock frequency supported by the LTC1198-1BCS8#TRPBF at 5V supply?
The LTC1198-1BCS8#TRPBF supports a maximum clock frequency of 12.0MHz at VCC = 5V, as specified in the Recommended Operating Conditions table. This enables its fastest conversion time of 710ns and maximum sampling rate of 750kHz. Operation above this frequency risks timing violations and invalid conversion results.
Does the LTC1198-1BCS8#TRPBF require an external reference voltage?
No, the LTC1198-1BCS8#TRPBF does not require an external reference voltage. Its VCC pin serves as both power supply and reference input (VCC/VREF), establishing the full-scale range from 0V to VCC. This simplifies design by eliminating external reference components while maintaining ratiometric accuracy when used with resistive sensors.
How does the auto-shutdown feature of the LTC1198-1BCS8#TRPBF operate?
The LTC1198-1BCS8#TRPBF enters auto-shutdown mode when the CS/SHUTDOWN pin is driven HIGH. In this state, internal power rails are disconnected, reducing supply current to 1μA typical. Conversion resumes immediately upon CS falling edge - no wake-up delay or initialization sequence is required, making it ideal for burst-mode acquisition.
Can the LTC1198-1BCS8#TRPBF perform differential measurements between CH0 and CH1?
Yes, the LTC1198-1BCS8#TRPBF supports true differential input mode between CH0 and CH1. This is configured via the DIN input: setting the first bit (SGL/DIFF) to '1' selects differential mode, allowing measurement of the voltage difference CH0–CH1 with common-mode rejection. The full 8-bit resolution applies to the differential span.
What is the guaranteed total unadjusted error specification for the LTC1198-1BCS8#TRPBF over temperature?
The LTC1198-1BCS8#TRPBF guarantees a total unadjusted error of ±1/2 LSB over the full operating temperature range of 0°C to 70°C. This specification includes offset, full-scale, linearity, multiplexer, and hold-step errors - ensuring monotonic behavior and predictable accuracy without calibration across its rated environment.
LTC1198-1BCS8#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:
- 8
- Sampling Rate (Per Second):
- 750k
- 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 ~ 6V
- Voltage - Supply, Digital:
- 2.7V ~ 6V
- Features:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 8-SO
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC1198-1BCS8#TRPBF FAQ
1.How can I place an order for LTC1198-1BCS8#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1198-1BCS8#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 LTC1198-1BCS8#TRPBF reliable?
The price and inventory of LTC1198-1BCS8#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1198-1BCS8#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC1198-1BCS8#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1198-1BCS8#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1198-1BCS8#TRPBF?
LTC1198-1BCS8#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1198-1BCS8#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 LTC1198-1BCS8#TRPBF?
For technical support, including LTC1198-1BCS8#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1198-1BCS8#TRPBF requirements.
6.How does Aetrix verify that LTC1198-1BCS8#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC1198-1BCS8#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 LTC1198-1BCS8#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC1198-1BCS8#TRPBF?
All LTC1198-1BCS8#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1198-1BCS8#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 LTC1198-1BCS8#TRPBF part is unused and in its original packaging.
Return procedure for LTC1198-1BCS8#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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