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Analog Devices Inc. LTC1606AIG#PBF
- Part No.:
- LTC1606AIG#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
LTC1606AIG#PBF.pdf
- Description:
- IC ADC 16BIT SAR 28SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,489
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Product details
Overview
LTC1606AIG#PBF from Analog Devices (formerly Linear Technology) is a 16-bit, 250ksps successive-approximation analog-to-digital converter (SAR ADC) operating from a single 5V supply. It features ±10V bipolar input range, ±2.0LSB max integral nonlinearity, 90dB typical signal-to-noise ratio, and integrated precision 2.5V reference with 4.096V buffered CAP output - used in high-accuracy industrial data acquisition systems.
For engineers reviewing the LTC1606AIG#PBF datasheet, LTC1606AIG#PBF pinout, LTC1606AIG#PBF application, or LTC1606AIG#PBF equivalent, key selection considerations include guaranteed no missing codes over temperature, microprocessor-compatible parallel 16-bit or byte-mode interface, internal synchronized clock, and dual ground architecture (AGND1/AGND2/DGND) for mixed-signal noise isolation.
Technical Context
The LTC1606AIG#PBF implements a switched-capacitor SAR architecture with on-chip sample-and-hold, factory-trimmed bandgap reference, and internal 1.64× reference buffer driving the 4.096V CAP node. Its conversion timing is fully self-contained: 2.5µs typical conversion time + 1.5µs acquisition time enables deterministic 250ksps throughput without external clocking.
It supports two digital interface modes: R/C-controlled conversion with CS held low, or CS-triggered conversion with R/C pre-asserted. BUSY output signals active conversion state, while BYTE pin selects MSB-first (D15–D0) or byte-swapped (D7–D0 on pins 15–22, D15–D8 on pins 6–13) data output format - enabling direct interfacing to 8-bit microcontrollers or 16-bit DSPs.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - delivers 65,536 discrete output codes with guaranteed no missing codes across –40°C to +85°C. |
| Sampling Rate | 250ksps - fixed maximum rate enabled by internal trimmed clock; no external oscillator required. |
| Analog Input Range | ±10V - industry-standard bipolar range, supported by internal 2.5V reference (±4 × VREF). |
| Signal-to-Noise Ratio | 90dB typ - enables >15 effective bits of dynamic resolution at 1kHz input, 3dB better than prior-generation competitors. |
| Integral Nonlinearity | ±2.0LSB max - ensures monotonicity and accuracy for precision measurement applications. |
| Power Dissipation | 75mW typ at 5V - low power enables dense PCB layouts and reduced thermal management overhead. |
| Reference Options | Internal 2.5V ±5ppm/°C or external reference - allows trade-off between simplicity and extended temperature accuracy. |
Pinout & Package
Package: 28-lead plastic SSOP (G package), 5.20–5.38mm width, 0.65mm pitch, RoHS-compliant lead-free finish (#PBF).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (1) | Analog Input | ±10V differential input node; protected to ±25V; requires 200Ω series resistor per datasheet layout guidance. |
| AGND1 (2), AGND2 (5) | Analog Ground | Separate analog return paths - AGND1 for input stage, AGND2 for reference buffer; must be tied together at single point. |
| REF (3) | 2.5V Reference Output | Factory-trimmed bandgap reference; bypass with 2.2µF tantalum; can be overdriven by external reference. |
| CAP (4) | 4.096V Buffered Reference Output | 1.64× amplified REF output; drives internal DAC; bypass with 10µF tantalum; DC load ≤2mA only. |
| D15–D0 (6–13, 15–22) | Three-State Parallel Data Outputs | 16-bit two's complement output; Hi-Z when CS high or R/C low; BYTE pin controls MSB/LSB pin assignment. |
| R/C (24) | Read/Convert Control | Falling edge initiates conversion when CS is low; rising edge enables data output; critical timing window ≤1µs. |
| CS (25) | Chip Select | Active-low enable; OR'd internally with R/C; falling edge starts conversion if R/C is low, enables data if R/C is high. |
| BUSY (26) | Conversion Status Indicator | Active-low open-drain output; goes high at end of conversion to signal valid data; rising edge marks data readiness. |
| VANA (27), VDIG (28) | Analog & Digital Supplies | Both require 4.75–5.25V; VANA powers analog core, VDIG powers digital logic; connect directly with shared 0.1µF + 10µF decoupling. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Precision Reference | 2.500V ±0.030V (±1200ppm) with ±5ppm/°C tempco - eliminates need for external reference in most industrial applications. |
| Low Transition Noise | 0.65LSB RMS - reduces histogram spread in DC measurements and improves effective resolution in static sensing. |
| Overvoltage Protected Input | Withstands ±25V on VIN - enables robust front-end design without external clamping diodes in noisy industrial environments. |
| Two-Mode Digital Interface | Supports both R/C-triggered and CS-triggered operation - simplifies integration with legacy 8-bit microcontrollers or modern 16-bit DSPs. |
| Dual Ground Architecture | Separate AGND1, AGND2, and DGND pins - enables star-ground layout to minimize digital switching noise coupling into analog path. |
Applications
| Industrial Process Monitoring | High-Speed PC-Based DAQ |
|---|---|
|
Use Scenario: Continuous voltage monitoring of 4–20mA loop transmitters, thermocouple amplifiers, and strain gauge bridges in PLC I/O modules. IC Role / Device Role / Timing Role: Primary 16-bit digitizer capturing ±10V sensor outputs at 250ksps with deterministic latency and no missing codes over full industrial temperature range. Use Value: Enables sub-0.01% full-scale accuracy in closed-loop control systems without calibration drift compensation firmware. |
Use Scenario: Real-time waveform capture in USB/Ethernet-connected oscilloscope adapters and spectrum analyzers. IC Role / Device Role / Timing Role: High-fidelity ADC front-end delivering 90dB SNR and 1µs transient response for 1kHz–20kHz signal analysis. Use Value: Supports >15-bit ENOB at 1kHz, allowing software-defined instruments to meet Class A metrology requirements. |
| Multiplexed Sensor Arrays | Digital Signal Processing Front-End |
|
Use Scenario: Scanning multi-channel temperature, pressure, and vibration sensors in predictive maintenance gateways. IC Role / Device Role / Timing Role: Central ADC serving up to 16 channels via external analog multiplexer; uses BUSY signal for precise channel synchronization. Use Value: Eliminates need for external FIFO or DMA controller due to predictable 4µs inter-conversion interval and ready-valid handshake. |
Use Scenario: Direct analog input stage for TI C6000 or Analog Devices SHARC DSPs in motor control and audio processing. IC Role / Device Role / Timing Role: Parallel-interface ADC providing 16-bit two's complement data aligned to DSP external memory bus timing. Use Value: Reduces interface logic count and PCB area versus serial ADCs; BYTE pin enables seamless 8-bit bus compatibility. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7805U | 200ksps max, ±10V input, 85dB SNR, requires external reference and clock; SO-28 package. | Lacks internal reference and clock; higher system BOM cost and layout complexity. | Select when lower power (35mW) and proven long-term availability outweigh need for integrated features. |
| AD976ARZ | 200ksps, ±10V input, 87dB SNR, internal reference, but no internal clock; requires external 2.5MHz clock. | Requires clock generation circuitry and tighter jitter control; less deterministic timing than LTC1606AIG#PBF. | Choose when existing system clock infrastructure exists and reference integration is prioritized over clock autonomy. |
Compared with ADS7805U and AD976ARZ, the LTC1606AIG#PBF provides higher sampling rate (250ksps vs 200ksps), superior SNR (90dB vs 85–87dB), and full self-timed operation - reducing system-level timing validation effort and improving measurement repeatability in embedded DAQ designs.
Availability
LTC1606AIG#PBF is available at Aetrix Electronics and suitable for industrial process control, high-speed PC-based data acquisition, multiplexed sensor arrays, and digital signal processing front-end applications requiring stable component supply and long-term manufacturability.
Supply support for LTC1606AIG#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 technologies, serving industrial, automotive, communications, and healthcare markets.
The LTC1606AIG#PBF belongs to ADI's legacy Linear Technology precision data acquisition product line, designed specifically for high-accuracy, low-power, single-supply industrial measurement systems where reliability and DC performance are critical.
FAQ
What is the operating temperature range for the LTC1606AIG#PBF?
The LTC1606AIG#PBF is rated for –40°C to +85°C ambient operation (industrial grade). This range is confirmed in the Absolute Maximum Ratings table and applies to all DC and AC specifications marked with the ● symbol, including INL, SNR, and conversion timing parameters.
Does the LTC1606AIG#PBF require an external clock?
No, the LTC1606AIG#PBF does not require an external clock. It contains a factory-trimmed internal clock that delivers a typical 2.5µs conversion time and guarantees 250ksps throughput. External clocking is neither supported nor necessary for standard operation.
Can the LTC1606AIG#PBF accept input voltages beyond ±10V?
Yes - the LTC1606AIG#PBF analog input (VIN) is overvoltage protected to ±25V per Absolute Maximum Ratings. However, accurate conversion is only specified within the ±10V range; inputs outside this range will saturate or produce undefined codes.
How is the reference configured on the LTC1606AIG#PBF?
The LTC1606AIG#PBF includes a factory-trimmed 2.5V internal reference available at the REF pin and a buffered 4.096V output at the CAP pin. An external reference can be applied to REF to override the internal source - enabling improved temperature stability when needed.
What package type is used for the LTC1606AIG#PBF?
The LTC1606AIG#PBF uses the 28-lead plastic SSOP (G package), measuring 5.20–5.38mm wide with 0.65mm lead pitch. The #PBF suffix confirms lead-free RoHS-compliant finish, and the "I" in "AIG" denotes the industrial temperature grade (–40°C to +85°C).
LTC1606AIG#PBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 28-SSOP (0.209", 5.30mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 250k
- 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-SSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC1606AIG#PBF FAQ
1.How can I place an order for LTC1606AIG#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1606AIG#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 LTC1606AIG#PBF reliable?
The price and inventory of LTC1606AIG#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1606AIG#PBF is usually 5 days.
3.What payment methods are accepted for LTC1606AIG#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1606AIG#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1606AIG#PBF?
LTC1606AIG#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1606AIG#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 LTC1606AIG#PBF?
For technical support, including LTC1606AIG#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1606AIG#PBF requirements.
6.How does Aetrix verify that LTC1606AIG#PBF is sourced from the original manufacturer or authorized distributors?
All LTC1606AIG#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 LTC1606AIG#PBF meets industry standards.
7.What is the process for return or replacement of LTC1606AIG#PBF?
All LTC1606AIG#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1606AIG#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 LTC1606AIG#PBF part is unused and in its original packaging.
Return procedure for LTC1606AIG#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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