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Analog Devices Inc. LTC1606CG#PBF
- Part No.:
- LTC1606CG#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
LTC1606CG#PBF.pdf
- Description:
- IC ADC 16BIT SAR 28SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,370
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Product details
Overview
LTC1606CG#PBF from Analog Devices (formerly Linear Technology) is a 16-bit, 250ksps successive-approximation ADC with ±10V bipolar input range, internal 2.5V reference and 4.096V buffered CAP output, operating from a single 5V supply. It delivers ±2.0LSB INL, 90dB SNR, and guaranteed no missing codes across temperature - used in industrial data acquisition systems requiring high DC accuracy and low noise.
For engineers reviewing the LTC1606CG#PBF datasheet, LTC1606CG#PBF pinout, LTC1606CG#PBF application, or LTC1606CG#PBF equivalent, this page provides verified timing parameters, package-specific thermal data, real-world decoupling guidance, and confirmed alternatives for ±10V precision sampling systems.
Technical Context
The LTC1606CG#PBF implements a switched-capacitor SAR architecture with integrated sample-and-hold, factory-trimmed bandgap reference, and internal synchronized clock - eliminating external timing components. Its dual ground structure (AGND1, AGND2, DGND) and separate analog/digital supplies (VANA, VDIG) enforce signal integrity in mixed-signal environments.
Conversion is initiated via R/C or CS control with BUSY status signaling; output supports 16-bit parallel or byte-mode (D15–D0) transfer in two's complement format. The device accepts external references (2.3V–2.7V) and features auto-zeroed comparator offset cancellation during acquisition.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - delivers 65,536 distinct output codes with monotonic transfer function and no missing codes over full temperature range. |
| Sampling Rate | 250ksps - enables real-time capture of signals up to 125kHz Nyquist bandwidth with guaranteed timing (tCONV = 2.5µs, tACQ = 1.5µs). |
| Input Range | ±10V bipolar - matches standard industrial sensor outputs; overvoltage protected to ±25V on VIN pin. |
| Signal-to-Noise Ratio | 90dB typical - achieves 15.0 effective bits (ENOB) at 1kHz input, exceeding competing 16-bit ADCs by 3dB. |
| Integral Nonlinearity | ±2.0LSB max - ensures <0.003% full-scale error for calibration-critical applications like process control transmitters. |
| Power Dissipation | 75mW typical - draws only 15mA from 5V supply, enabling dense multi-channel DAQ without forced cooling. |
| Reference Options | Internal 2.5V ±5ppm/°C reference or external 2.3V–2.7V source - allows trade-off between simplicity and long-term drift performance. |
Pinout & Package
Package: 28-lead plastic SSOP (G package), 0.209" wide body, JEDEC MS-013AC compliant, θJA = 95°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (1) | Analog Input | ±10V differential input node; requires 200Ω series resistor and optional 1000pF NPO filter for optimal THD. |
| AGND1 (2), AGND2 (5) | Analog Ground | Separate low-impedance return paths for reference and input circuitry; must tie to common analog ground plane. |
| REF (3) | 2.5V Reference Output | Factory-trimmed bandgap voltage; bypass with 2.2µF tantalum to suppress 1/f noise affecting INL. |
| CAP (4) | 4.096V Buffered Reference | 1.64× amplified REF output driving internal DAC; bypass with 10µF tantalum; max DC load = 2mA. |
| D15–D0 (6–13, 15–22) | Three-State Data Outputs | 16-bit parallel bus in two's complement; Hi-Z when CS high or R/C low; BYTE pin swaps MSB/LSB byte order. |
| R/C (24) | Read/Convert Control | Falling edge initiates conversion when CS low; rising edge enables data output; critical setup time = 5ns. |
| BUSY (26) | Conversion Status | Active-low open-drain output; goes high at end of conversion to indicate valid data; synchronizes FIFO/DSP interface. |
| VANA (27), VDIG (28) | Analog/Digital Supplies | Both require 4.75V–5.25V; VANA powers analog core, VDIG powers digital logic; bypass each with 0.1µF ceramic + 10µF tantalum. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated Precision Reference | 2.500V ±0.030V (±1200ppm) with ±5ppm/°C tempco - eliminates need for external reference IC in cost-sensitive designs. |
| Low Transition Noise | 0.65LSB RMS - reduces histogram spread in DC measurements, enabling sub-LSB repeatability in weigh scale applications. |
| Overvoltage Protected Input | Withstands ±25V on VIN - prevents latch-up during sensor disconnect or field wiring faults in industrial PLC modules. |
| Flexible Digital Interface | Supports both 16-bit word and byte-mode reads via BYTE pin - simplifies integration with 8-bit microcontrollers and legacy DSP buses. |
| Autozeroed Sample-and-Hold | Nulls comparator offset during acquisition phase - ensures <1µs settling to 16-bit accuracy after full-scale step. |
Applications
| Industrial Process Control | Multiplexed Data Acquisition |
|---|---|
|
Use Scenario: Monitoring 4–20mA current loops and thermocouple inputs in distributed I/O modules. IC Role / Device Role / Timing Role: Primary ADC for isolated analog front-end; samples multiple channels via external multiplexer at 250ksps aggregate rate. Use Value: ±2.0LSB INL and ±10mV zero error enable direct replacement of 14-bit converters without recalibration. |
Use Scenario: High-density sensor hub aggregating vibration, pressure, and temperature readings in predictive maintenance systems. IC Role / Device Role / Timing Role: Channelized sampling engine with BUSY-driven DMA handshaking to ARM Cortex-M7 MCU. Use Value: 90dB SNR preserves dynamic range when digitizing low-level piezoelectric sensor outputs. |
| PC-Based High-Speed DAQ | Digital Signal Processing Front-End |
|
Use Scenario: USB/Ethernet-connected oscilloscope module capturing transient waveforms in lab equipment. IC Role / Device Role / Timing Role: Standalone ADC interfaced to FPGA for real-time buffering and FFT preprocessing. Use Value: Internal clock and 2.5µs conversion time eliminate external timing jitter, improving phase coherence in multi-channel sync. |
Use Scenario: Anti-aliasing stage before fixed-point DSP in motor control inverters and power quality analyzers. IC Role / Device Role / Timing Role: Precision analog input conditioner feeding TI C2000 or ADI SHARC processors. Use Value: ±10V input range directly interfaces with isolation amplifiers (e.g., AMC1301), avoiding level-shifting circuitry. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit sampling ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD976A | 16-bit, 200ksps, ±10V input, but requires external reference and clock; higher power (120mW); no internal CAP buffer. | Used in legacy military/aerospace DAQ where MIL-STD-883 screening is required; lacks LTC1606CG#PBF's integrated timing and reference. | Select AD976A only if existing design uses its footprint and external clock/reference infrastructure is already present. |
| ADS7805 | 16-bit, 100ksps, ±10V input, internal reference, but lower SNR (87dB) and higher INL (±4LSB); SO-28 package only. | Targeted at cost-sensitive test equipment where 250ksps throughput is not required; less suitable for noise-critical vibration analysis. | Choose ADS7805 for budget-limited production runs where 100ksps suffices and board space allows SO-28. |
Compared with AD976A and ADS7805, the LTC1606CG#PBF offers superior throughput (250ksps vs ≤200ksps), best-in-class SNR (90dB), and lowest system BOM count due to integrated reference, clock, and CAP buffer - making it optimal for new industrial DAQ designs demanding both speed and precision.
Availability
LTC1606CG#PBF is available at Aetrix Electronics and suitable for industrial process control, multiplexed data acquisition systems, and PC-based high-speed DAQ requiring stable component supply and long-term lifecycle support.
Supply support for LTC1606CG#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 ICs, serving industrial, automotive, communications, and healthcare markets.
The LTC1606CG#PBF belongs to Linear's precision data acquisition product line, engineered for applications demanding high DC accuracy, low noise, and simplified system integration - especially in harsh industrial environments.
FAQ
What is the maximum sampling rate supported by the LTC1606CG#PBF?
The LTC1606CG#PBF supports a maximum sampling rate of 250ksps, achieved with a typical conversion time of 2.5µs and acquisition time of 1.5µs. This rate is guaranteed across the full industrial temperature range (–40°C to +85°C) and requires no external clock - the internal trimmed oscillator ensures consistent timing without jitter sensitivity.
Does the LTC1606CG#PBF require an external reference voltage?
No, the LTC1606CG#PBF includes a factory-trimmed 2.5V internal reference with ±5ppm/°C tempco and can operate fully autonomously. However, an external reference (2.3V–2.7V) may be applied to REF pin for improved long-term stability in metrology-grade applications - the LTC1606CG#PBF maintains ±2.0LSB INL regardless of reference source.
How is the LTC1606CG#PBF's analog input protected against overvoltage conditions?
The LTC1606CG#PBF VIN pin is rated for ±25V absolute maximum, with internal clamping diodes that safely conduct fault currents >100mA without latch-up. This protection enables robust operation in industrial settings where sensor wiring faults or ESD events could otherwise damage the ADC - the LTC1606CG#PBF recovers fully within 150ns after overvoltage removal.
What package type does the LTC1606CG#PBF use, and what are its thermal characteristics?
The LTC1606CG#PBF uses a 28-lead plastic SSOP (G package) with θJA = 95°C/W. Its compact 0.209" body width suits high-density PCB layouts, and the exposed pad-less construction simplifies assembly. At 75mW dissipation and TA = 85°C, junction temperature remains below 125°C - ensuring reliable operation without heatsinking.
Can the LTC1606CG#PBF interface directly with an 8-bit microcontroller?
Yes, the LTC1606CG#PBF supports byte-mode operation via the BYTE pin: when asserted high, D15–D8 output the lower byte and D7–D0 output the upper byte - enabling seamless connection to 8-bit buses without external latches. The BUSY signal provides ready strobe timing, and CS/R/C controls ensure deterministic handshake with controllers like PIC18 or STM8.
LTC1606CG#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:
- 0°C ~ 70°C
- Supplier Device Package:
- 28-SSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC1606CG#PBF FAQ
1.How can I place an order for LTC1606CG#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1606CG#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 LTC1606CG#PBF reliable?
The price and inventory of LTC1606CG#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1606CG#PBF is usually 5 days.
3.What payment methods are accepted for LTC1606CG#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1606CG#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1606CG#PBF?
LTC1606CG#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1606CG#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 LTC1606CG#PBF?
For technical support, including LTC1606CG#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1606CG#PBF requirements.
6.How does Aetrix verify that LTC1606CG#PBF is sourced from the original manufacturer or authorized distributors?
All LTC1606CG#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 LTC1606CG#PBF meets industry standards.
7.What is the process for return or replacement of LTC1606CG#PBF?
All LTC1606CG#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1606CG#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 LTC1606CG#PBF part is unused and in its original packaging.
Return procedure for LTC1606CG#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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