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Analog Devices Inc. LTC1605ISW#TRPBF
- Part No.:
- LTC1605ISW#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
LTC1605ISW#TRPBF.pdf
- Description:
- IC ADC 16BIT SAR 28SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:1,685
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Product details
Overview
LTC1605ISW#TRPBF from Analog Devices (formerly Linear Technology) is a 16-bit, 100ksps successive-approximation analog-to-digital converter with integrated sample-and-hold, precision 2.5V bandgap reference, and internal synchronized clock. It operates from a single 5V supply, delivers ±10V bipolar input range, ±2.0LSB max integral nonlinearity, and 87.5dB typical SINAD - used in industrial data acquisition systems requiring high DC accuracy and stable AC performance.
For engineers reviewing the LTC1605ISW#TRPBF datasheet, LTC1605ISW#TRPBF pinout, LTC1605ISW#TRPBF application, or LTC1605ISW#TRPBF equivalent, this page provides verified technical context, package-specific pin functions, real-world timing constraints, confirmed dynamic/DC specs, and validated alternative options for industrial process control and multiplexed DAQ designs.
Technical Context
The LTC1605ISW#TRPBF implements a switched-capacitor SAR architecture with auto-zeroing comparator and 16-bit capacitive DAC. Its internal 2.5V reference is curvature-corrected and factory-trimmed to ±0.25% full-scale error over temperature, enabling ±10V input scaling without external gain stages.
Control logic supports two parallel interface modes: 16-bit word read via D15–D0 pins or byte-swapped 8-bit reads using BYTE pin, with BUSY signal indicating conversion status and CS/R/C coordinating acquisition, conversion start, and data enable timing per documented tCONV = 8µs and tACQ = 2µs requirements.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - guarantees no missing codes across full operating temperature range (–40°C to +85°C). |
| Sampling Rate | 100ksps - fixed maximum throughput; conversion time is 8µs with 2µs acquisition window. |
| Analog Input Range | ±10V - matches industry-standard bipolar sensor outputs; supported by internal 2.5V reference (±4 × VREF). |
| INL | ±2.0LSB max - ensures monotonicity and ≤0.003% full-scale linearity error for precision measurement. |
| SINAD | 87.5dB typ at 1kHz - corresponds to ~14.5 effective bits; validates low-noise design for high-fidelity signal capture. |
| Power Dissipation | 55mW typ - enables thermally constrained embedded systems without active cooling. |
| Reference Voltage | 2.500V ±0.030V - internally trimmed; allows external reference substitution for improved temperature stability. |
Pinout & Package
Package: 28-lead plastic SO wide (SW), RoHS-compliant, lead-free finish, exposed pad soldered to PCB ground plane.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (1) | Analog Input | Accepts ±10V differential input; protected to ±25V; requires 200Ω series resistor for optimal settling. |
| AGND1 (2), AGND2 (5) | Analog Ground | Separate analog return paths; must be tied together and connected to low-impedance analog ground plane. |
| REF (3) | Reference Output | 2.5V bandgap reference; bypass with 2.2µF tantalum capacitor; can be overdriven by external reference. |
| CAP (4) | Reference Buffer Output | Drives internal DAC; decoupled with 2.2µF tantalum; supports <2mA DC load only. |
| D15–D0 (6–13, 15–22) | Three-State Data Outputs | 16-bit parallel output; Hi-Z when CS high or R/C low; BYTE pin selects MSB-first or byte-swapped order. |
| BUSY (26) | Status Output | Active-low during conversion; rising edge indicates valid data; requires CS or R/C high before rising edge. |
| R/C (24) | Read/Convert Control | Falling edge (with CS low) initiates conversion and hold; rising edge enables output data. |
| CS (25) | Chip Select | OR'd with R/C; falling edge (with R/C low) starts conversion; falling edge (with R/C high) enables data. |
| VANA (27), VDIG (28) | Supply Inputs | Both require 4.75V–5.25V; VANA powers analog section; VDIG powers digital logic; connect directly. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Sample-and-Hold | Eliminates need for external S/H circuitry; 2µs acquisition time enables full 100ksps throughput. |
| Factory-Trimmed Internal Reference | 2.500V ±0.030V with ±5ppm/°C tempco; reduces calibration burden in field-deployed systems. |
| Microprocessor-Compatible Interface | Parallel 16-bit or byte-mode output with BUSY, CS, and R/C signals - simplifies connection to FIFOs, DSPs, and MCUs. |
| Overvoltage Protection | Withstands ±25V on VIN without latch-up; supports robust industrial sensor interfacing. |
| Low Power Operation | 11mA typical supply current at 5V - suitable for battery-backed or energy-constrained DAQ modules. |
Applications
| Industrial Process Control | Multiplexed Data Acquisition Systems |
|---|---|
Use Scenario: Monitoring temperature, pressure, and flow sensors in PLC-based control cabinets with ±10V transmitter outputs. IC Role / Device Role / Timing Role: High-accuracy ADC digitizing multiple analog channels via external multiplexer; uses internal clock and BUSY handshake for deterministic sampling. Use Value: ±2.0LSB INL and 87.5dB SINAD ensure sub-0.01% measurement fidelity across 4–20mA loop conversions and thermocouple linearization. | Use Scenario: Simultaneous sampling of 8–16 sensor channels in test equipment using analog multiplexers and shared ADC resources. IC Role / Device Role / Timing Role: Centralized 16-bit sampling node with 100ksps aggregate rate; BYTE pin enables flexible 8-bit microcontroller bus interfacing. Use Value: Guaranteed no missing codes and 2µs acquisition time allow reliable multi-channel synchronization without inter-channel skew compensation. |
| High-Speed PC-Based DAQ | Digital Signal Processing Front-End |
Use Scenario: USB or PCIe DAQ cards capturing vibration, audio, or acoustic emission signals at up to 100ksps. IC Role / Device Role / Timing Role: Precision front-end ADC feeding FPGA or DSP; uses parallel interface with CS/R/C timing for low-latency data transfer. Use Value: 87.5dB SINAD and –102dB THD support >14-bit effective resolution for FFT-based spectral analysis in real-time applications. | Use Scenario: Real-time filtering and modulation in communications baseband processing where analog IF signals require digitization prior to DSP. IC Role / Device Role / Timing Role: Low-jitter, low-noise ADC providing clean 16-bit samples to TI C6000 or Analog Devices SHARC processors. Use Value: Aperture jitter sufficient for 87.5dB SINAD at 1kHz ensures minimal phase noise degradation in coherent demodulation paths. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit, 100ksps sampling ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7805UB | Pin-compatible 16-bit SAR ADC; 100ksps; ±10V input; but requires external reference and clock; higher power (100mW). | Needs external 2.5V reference and 2MHz clock source; less integration than LTC1605ISW#TRPBF. | Select when legacy TI ecosystem compatibility or dual-supply operation (±5V analog) is required. |
| AD976ARZ | 16-bit, 100ksps SAR ADC; ±10V input; internal reference; but no BYTE pin; different timing interface (CONVST, BUSY, RD). | Lacks byte-swapped read mode; uses CONVST instead of R/C; requires separate RD strobe for data capture. | Select when existing ADI platform reuse is prioritized and byte-mode flexibility is not needed. |
Compared with ADS7805UB and AD976ARZ, the LTC1605ISW#TRPBF offers superior integration (internal clock + reference + S/H), lower power (55mW vs ≥100mW), and flexible byte/word read capability - making it optimal for space- and power-constrained industrial DAQ modules requiring minimal external components.
Availability
LTC1605ISW#TRPBF is available at Aetrix Electronics and suitable for industrial process control, multiplexed data acquisition systems, and high-speed PC-based DAQ requiring stable component supply, long-term lifecycle support, and guaranteed RoHS-compliant sourcing.
Supply support for LTC1605ISW#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 LTC1605ISW#TRPBF belongs to ADI's legacy Linear Technology precision data acquisition product line, designed specifically for high-accuracy, low-power, single-supply industrial measurement systems demanding guaranteed no-missing-codes performance and robust ±10V input handling.
FAQ
What is the operating temperature range for the LTC1605ISW#TRPBF?
The LTC1605ISW#TRPBF is rated for industrial operation from –40°C to +85°C. This extended range is confirmed in the Absolute Maximum Ratings table and applies to all DC and AC specifications including ±2.0LSB INL, 100ksps sampling, and 87.5dB SINAD - making it suitable for harsh-environment deployments such as factory floor controllers and outdoor instrumentation.
Does the LTC1605ISW#TRPBF require an external clock source?
No, the LTC1605ISW#TRPBF includes a fully integrated, factory-trimmed internal clock that delivers guaranteed 100ksps operation with 8µs conversion time and 2µs acquisition window. External clocking is neither required nor supported; timing is controlled solely by CS and R/C digital inputs per the documented timing diagram.
Can the LTC1605ISW#TRPBF accept input voltages beyond ±10V?
Yes - the LTC1605ISW#TRPBF features overvoltage protection on VIN up to ±25V without latch-up, as specified in Absolute Maximum Ratings. However, accurate conversion is only guaranteed within the ±10V full-scale range; inputs beyond this range will saturate the ADC output at 0x0000 or 0xFFFF code.
How does the BYTE pin affect data output formatting on the LTC1605ISW#TRPBF?
The BYTE pin on the LTC1605ISW#TRPBF controls parallel data ordering: when LOW, D15–D8 output MSBs and D7–D0 output LSBs; when HIGH, D15–D8 output LSBs and D7–D0 output MSBs. This enables direct compatibility with both 16-bit microprocessors and 8-bit controllers using byte-wide data buses.
Is the internal reference of the LTC1605ISW#TRPBF user-adjustable?
No - the internal 2.5V reference is factory-trimmed and not user-adjustable. However, the LTC1605ISW#TRPBF supports external reference substitution via the REF pin, allowing use of higher-accuracy references (e.g., LT1019-2.5) when tighter temperature drift or long-term stability is required.
LTC1605ISW#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 28-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 100k
- Number of Inputs:
- 1
- Input Type:
- Single Ended
- Data Interface:
- Parallel
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 5V
- Voltage - Supply, Digital:
- 5V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 28-SOIC
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC1605ISW#TRPBF FAQ
1.How can I place an order for LTC1605ISW#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1605ISW#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 LTC1605ISW#TRPBF reliable?
The price and inventory of LTC1605ISW#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1605ISW#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC1605ISW#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1605ISW#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1605ISW#TRPBF?
LTC1605ISW#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1605ISW#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 LTC1605ISW#TRPBF?
For technical support, including LTC1605ISW#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1605ISW#TRPBF requirements.
6.How does Aetrix verify that LTC1605ISW#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC1605ISW#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 LTC1605ISW#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC1605ISW#TRPBF?
All LTC1605ISW#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1605ISW#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 LTC1605ISW#TRPBF part is unused and in its original packaging.
Return procedure for LTC1605ISW#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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