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Analog Devices Inc. LTC1606IG#PBF
- Part No.:
- LTC1606IG#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
LTC1606IG#PBF.pdf
- Description:
- IC ADC 16BIT SAR 28SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,094
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Product details
Overview
LTC1606IG#PBF from Analog Devices (formerly Linear Technology) is a 16-bit, 250ksps successive-approximation analog-to-digital converter with ±10V bipolar input range, internal 2.5V reference and 4.096V buffered CAP output, operating from a single 5V supply. It integrates sample-and-hold, trimmed internal clock, and microprocessor-compatible 16-bit parallel output - used in high-accuracy industrial data acquisition systems requiring stable DC specs and low transition noise.
For engineers reviewing the LTC1606IG#PBF datasheet, LTC1606IG#PBF pinout, LTC1606IG#PBF application, or LTC1606IG#PBF equivalent, key selection criteria include guaranteed no missing codes over temperature, ±2.0LSB max INL, 90dB SNR, 0.65LSB RMS transition noise, and support for internal/external reference configurations.
Technical Context
The LTC1606IG#PBF implements a 16-bit capacitive DAC-based successive approximation architecture with auto-zeroed comparator and internal synchronized clock. Its analog front-end includes precision 2.5V bandgap reference, 1.64× buffered CAP output (4.096V), and overvoltage-protected ±25V input tolerance.
Digital interface supports two operational modes: R/C-controlled conversion with CS held low, or CS-triggered conversion with R/C pre-asserted; BUSY indicates conversion status, BYTE selects MSB-first or byte-swapped output format on D15–D0 pins.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - delivers 65,536 distinct digital codes across full-scale range |
| Sampling Rate | 250ksps - enables real-time capture of signals up to 125kHz Nyquist bandwidth |
| Analog Input Range | ±10V - matches standard industrial sensor outputs and PLC interfaces |
| Signal-to-Noise Ratio | 90dB typical - provides >14.9 effective bits (ENOB) at 1kHz input |
| Integral Nonlinearity | ±2.0LSB maximum - ensures monotonicity and <0.003% full-scale error over temperature |
| Transition Noise | 0.65LSB RMS - reduces code flicker in DC and low-frequency measurements |
| Power Dissipation | 75mW typical - enables thermally constrained designs without forced cooling |
| No Missing Codes | Guaranteed over –40°C to +85°C - eliminates data gaps in critical control loops |
Pinout & Package
Package: 28-lead plastic SSOP (G package), 0.209" wide body, JEDEC MS-013AC compliant. Thermal resistance θJA = 95°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (1) | Analog Input | ±10V differential input referenced to AGND1/AGND2; protected to ±25V |
| AGND1 (2) | Analog Ground 1 | Primary analog ground return for VIN and REF; must tie to low-impedance analog plane |
| REF (3) | 2.5V Reference Output | Factory-trimmed bandgap reference; bypass with 2.2µF tantalum for stability |
| CAP (4) | 4.096V Buffered Reference Output | 1.64× gain buffer of REF; drives internal DAC; decouple with 10µF tantalum |
| AGND2 (5) | Analog Ground 2 | Secondary analog ground for CAP and REF; isolate from AGND1 if needed |
| D15–D8 (6–13) | Data Outputs (MSB Byte) | Three-state parallel bus; Hi-Z when CS high or R/C low |
| DGND (14) | Digital Ground | Return for digital logic; connect to analog ground at single point |
| D7–D0 (15–22) | Data Outputs (LSB Byte) | Three-state parallel bus; byte order controlled by BYTE pin |
| BYTE (23) | Byte Select Control | Low: D15–D8 = MSB, D7–D0 = LSB; High: byte-swap for 8-bit bus interfaces |
| R/C (24) | Read/Convert Control | Falling edge starts conversion when CS low; rising edge enables data output |
| CS (25) | Chip Select | Active-low enable; OR'd with R/C to initiate conversion or latch data |
| BUSY (26) | Conversion Status Flag | Active-low during conversion; rising edge marks valid data ready |
| VANA (27) | Analog Supply | +5V analog rail; bypass with 0.1µF ceramic + 10µF tantalum |
| VDIG (28) | Digital Supply | +5V digital rail; connect directly to VANA to minimize supply differential |
Key Features
| Feature | Design Value |
|---|---|
| Internal Trimmed Reference | 2.500V ±0.030V at 25°C with ±5ppm/°C tempco - eliminates external reference cost and layout complexity |
| Capacitive DAC Architecture | Monolithic 16-bit switched-capacitor array - achieves ±2.0LSB INL without laser trimming |
| Two-Mode Digital Interface | Supports both R/C-initiated and CS-initiated timing - simplifies integration with FIFOs, DSPs, and legacy microcontrollers |
| Overvoltage Protected Input | Withstands ±25V on VIN - prevents latch-up and damage in noisy industrial environments |
| Low Aperture Jitter | 40ns aperture delay with jitter sufficient to meet AC specs - preserves SFDR in medium-frequency sampling |
| Industrial Temperature Range | –40°C to +85°C operation - qualified for factory automation, process control, and test equipment |
Applications
| Industrial Process Monitoring | High-Speed PC-Based DAQ |
|---|---|
Use Scenario: Continuous voltage monitoring of pressure, temperature, and flow transmitters in chemical plant control cabinets. IC Role / Device Role / Timing Role: Precision 16-bit ADC capturing ±10V sensor outputs at 250ksps with guaranteed no missing codes over temperature. Use Value: Enables closed-loop PID control with sub-0.01% full-scale accuracy and immunity to thermal drift-induced code gaps. | Use Scenario: Real-time waveform capture in automated test equipment using ISA/PCI bus interfaces. IC Role / Device Role / Timing Role: Parallel-output ADC interfaced via 16-bit bus with BYTE-select for 8-bit data transfers. Use Value: Delivers 90dB SNR and 0.65LSB transition noise - improves dynamic range and measurement repeatability vs. competing 14-bit parts. |
| Multiplexed Sensor Arrays | Digital Signal Processing Front-End |
Use Scenario: Scanning 32-channel thermocouple/voltage inputs in environmental chamber controllers. IC Role / Device Role / Timing Role: ADC with internal S&H and 2.5V reference driving multiplexer-switched analog inputs. Use Value: Reduces external component count by integrating reference, buffer, and clock - lowers BOM cost and PCB area. | Use Scenario: Anti-aliasing front-end for FPGA-based FFT engines in vibration analysis instruments. IC Role / Device Role / Timing Role: High-SNR ADC feeding 16-bit parallel bus to FPGA with BUSY-synchronized data capture. Use Value: 90dB SINAD at 1kHz and 83dB at 10kHz supports accurate spectral decomposition of mechanical resonance signatures. |
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 |
|---|---|---|---|
| ADS7805UB | 16-bit, 100ksps, ±10V input, 85dB SNR, requires external reference and clock | Lower speed and SNR; suited for cost-sensitive, lower-bandwidth systems | Select when throughput <100ksps suffices and external reference flexibility is preferred |
| AD976AARZ | 16-bit, 200ksps, ±10V input, 87dB SNR, internal reference, SPI interface only | Serial-only interface; lacks parallel bus and BYTE-select capability | Select for space-constrained designs where SPI compatibility outweighs parallel bus need |
Compared with ADS7805UB and AD976AARZ, the LTC1606IG#PBF offers higher throughput (250ksps), superior SNR (90dB), integrated clock and dual-mode parallel interface - making it optimal for real-time industrial DAQ where timing determinism and signal fidelity are critical.
Availability
LTC1606IG#PBF is available at Aetrix Electronics and suitable for industrial process control, high-speed PC-based data acquisition, and multiplexed sensor array applications requiring stable component supply and long-term lifecycle support.
Supply support for LTC1606IG#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 (acquired Linear Technology in 2017) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors.
The LTC1606IG#PBF belongs to Linear's precision data acquisition product line, designed specifically for industrial, test & measurement, and process control systems demanding guaranteed monotonicity, low drift, and robust operation across extended temperature ranges.
FAQ
What is the operating temperature range for the LTC1606IG#PBF?
The LTC1606IG#PBF is rated for industrial operation from –40°C to +85°C. This range is confirmed in the Absolute Maximum Ratings table and applies to all DC and AC specifications marked with the ● symbol, including ±2.0LSB INL, no missing codes, and 75mW power dissipation. The "I" grade designation explicitly denotes this extended temperature capability.
Does the LTC1606IG#PBF require an external clock source?
No, the LTC1606IG#PBF does not require an external clock. It includes a factory-trimmed internal clock that delivers a typical conversion time of 2.5µs and guarantees 250ksps throughput with no external components. The internal clock eliminates timing jitter from external sources and simplifies system design compared to ADCs requiring precise external clock distribution.
How is the reference configured on the LTC1606IG#PBF?
The LTC1606IG#PBF features a 2.5V internal bandgap reference available at the REF pin and a 4.096V buffered output at the CAP pin. An external reference can be applied to REF to improve temperature drift performance beyond the internal ±5ppm/°C spec. When using the internal reference, REF must be bypassed with 2.2µF and CAP with 10µF tantalum capacitors per the datasheet layout guidelines.
What does the "#PBF" suffix indicate in LTC1606IG#PBF?
"#PBF" denotes lead-free (Pb-free) packaging per JEDEC J-STD-609 standards. The LTC1606IG#PBF uses matte tin lead finish on its SSOP leads and complies with RoHS Directive 2011/65/EU. This suffix replaces older "#TR" (tape & reel) or non-RoHS variants and confirms full environmental compliance for modern manufacturing lines.
Can the LTC1606IG#PBF interface directly with an 8-bit microcontroller bus?
Yes, the LTC1606IG#PBF supports 8-bit interfacing via the BYTE pin. When BYTE is high, the upper and lower bytes are swapped: D7–D0 output the MSB byte and D15–D8 output the LSB byte. This allows sequential 8-bit reads without external latches or glue logic - enabling direct connection to legacy 8-bit processors like the 8051 or PIC18 while retaining full 16-bit resolution.
LTC1606IG#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:
- -
LTC1606IG#PBF FAQ
1.How can I place an order for LTC1606IG#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1606IG#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 LTC1606IG#PBF reliable?
The price and inventory of LTC1606IG#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1606IG#PBF is usually 5 days.
3.What payment methods are accepted for LTC1606IG#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1606IG#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1606IG#PBF?
LTC1606IG#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1606IG#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 LTC1606IG#PBF?
For technical support, including LTC1606IG#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1606IG#PBF requirements.
6.How does Aetrix verify that LTC1606IG#PBF is sourced from the original manufacturer or authorized distributors?
All LTC1606IG#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 LTC1606IG#PBF meets industry standards.
7.What is the process for return or replacement of LTC1606IG#PBF?
All LTC1606IG#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1606IG#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 LTC1606IG#PBF part is unused and in its original packaging.
Return procedure for LTC1606IG#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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