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Analog Devices Inc. LTC1606ACG#PBF
- Part No.:
- LTC1606ACG#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
LTC1606ACG#PBF.pdf
- Description:
- IC ADC 16BIT SAR 28SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,614
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Product details
Overview
LTC1606ACG#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 parallel interface - used in high-accuracy industrial data acquisition systems requiring stable DC specs and low transition noise.
For engineers reviewing the LTC1606ACG#PBF datasheet, LTC1606ACG#PBF pinout, LTC1606ACG#PBF application, or LTC1606ACG#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 both internal and external reference configurations.
Technical Context
The LTC1606ACG#PBF implements a switched-capacitor SAR architecture with auto-zeroed comparator and 16-bit capacitive DAC. Its internal timing uses a factory-trimmed oscillator delivering 2.5µs conversion time and 1.5µs acquisition time, enabling deterministic 250ksps throughput without external clocking.
It features dual ground separation (AGND1, AGND2, DGND), independent analog/digital supplies (VANA/VDIG), and three-state parallel outputs (D15–D0) controlled by CS, R/C, and BYTE signals. The REF (2.5V) and CAP (4.096V) pins provide precision voltage sources for internal DAC and external decoupling.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - delivers 65,536 distinct output codes with guaranteed no missing codes across temperature. |
| Sampling Rate | 250ksps - supports real-time capture of signals up to 125kHz Nyquist bandwidth. |
| Input Range | ±10V bipolar - compatible with standard industrial sensor outputs and op-amp signal chains. |
| Signal-to-Noise Ratio | 90dB typical - enables >14.9 effective bits (ENOB) at 1kHz input, exceeding competing 16-bit ADCs by 3dB. |
| Integral Nonlinearity | ±2.0LSB maximum - ensures monotonicity and accuracy critical for closed-loop control feedback. |
| Transition Noise | 0.65LSB RMS - reduces code flicker in DC or low-frequency measurements versus 1LSB alternatives. |
| Power Dissipation | 75mW typical at 5V - enables thermally constrained designs without forced cooling. |
| Reference Options | Internal 2.5V bandgap (±5ppm/°C) or external reference - 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. Pin pitch: 0.0256" (0.65mm). Thermal resistance θJA = 95°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (1) | Analog Input | ±10V differential input node; protected to ±25V; requires 200Ω series resistor per layout guidance. |
| AGND1 (2), AGND2 (5) | Analog Ground | Separate analog return paths; must be tied to low-impedance analog ground plane, not digital ground. |
| REF (3) | 2.5V Reference Output | Factory-trimmed bandgap source; 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; <2mA DC load only. |
| D15–D8 (6–13), D7–D0 (15–22) | Parallel Data Outputs | Three-state 16-bit two's complement output bus; Hi-Z when CS high or R/C low; BYTE selects MSB/LSB byte order. |
| BUSY (26) | Conversion Status Flag | Active-low open-drain signal; goes high at end of conversion to indicate valid data on bus. |
| R/C (24) | Read/Convert Control | Falling edge initiates conversion when CS low; rising edge enables data output after conversion. |
| CS (25) | Chip Select | Enables device; falling edge starts conversion if R/C low, or enables output if R/C high. |
| VANA (27), VDIG (28) | Analog/Digital Supplies | Both require 4.75V–5.25V; VANA powers analog core, VDIG powers digital logic; bypass individually with 0.1µF + 10µF. |
Key Features
| Feature | Design Value |
|---|---|
| Guaranteed No Missing Codes | Valid across full –40°C to +85°C industrial temperature range - eliminates code gaps in precision measurement systems. |
| Low Transition Noise (0.65LSB RMS) | Reduces histogram spread in DC digitization - improves repeatability in weigh-scale and sensor calibration applications. |
| Integrated Precision Reference System | Includes 2.5V bandgap (±5ppm/°C) and 4.096V buffer - eliminates need for external reference ICs in many designs. |
| Microprocessor-Compatible Parallel Interface | 16-bit or byte-mode output with BUSY handshake - simplifies connection to FPGA, DSP, or microcontroller GPIO without FIFO buffering. |
| Overvoltage Protected Input (±25V) | Withstands transient faults beyond ±10V full-scale - enhances reliability in noisy industrial environments. |
| Internal Synchronized Clock | Eliminates external crystal or clock generator - reduces BOM count and layout complexity while ensuring timing consistency. |
Applications
| Industrial Process Monitoring | High-Speed PC-Based DAQ |
|---|---|
|
Use Scenario: Continuous monitoring of pressure, temperature, and flow sensors in PLC-connected field instrumentation. IC Role / Device Role / Timing Role: Primary ADC capturing ±10V sensor outputs at 250ksps with deterministic latency and no missing codes. Use Value: Enables sub-0.01% system accuracy over temperature using factory-trimmed INL and internal reference stability. |
Use Scenario: Real-time waveform capture in test equipment such as oscilloscopes and spectrum analyzers. IC Role / Device Role / Timing Role: High-fidelity sampling front-end with 90dB SNR and low harmonic distortion for FFT-based analysis. Use Value: Delivers >14.9 ENOB at 1kHz, supporting accurate spectral resolution without post-processing correction. |
| Multiplexed Sensor Acquisition | Digital Signal Processing Front-End |
|
Use Scenario: Scanning multiple RTD, strain gauge, or thermocouple channels via analog multiplexer. IC Role / Device Role / Timing Role: Precision ADC with fast 2.5µs conversion and 1.5µs acquisition - minimizes channel switching dead time. Use Value: Supports >400 effective channels/sec in 16-channel mux system, maintaining linearity under thermal drift. |
Use Scenario: Digitizing analog feedback signals in motor control or power converter closed-loop systems. IC Role / Device Role / Timing Role: Low-latency, monotonic ADC feeding FPGA or DSP for real-time PID computation. Use Value: Guaranteed no missing codes and ±2.0LSB INL ensure stable loop behavior without code jumps or instability. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit, 250ksps ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD976A (Analog Devices) | 16-bit, 200ksps; requires external reference and clock; higher power (120mW); ±1LSB INL. | Lower speed and higher power limit use in portable or thermally constrained systems. | Choose AD976A only if legacy compatibility or specific evaluation board support is required. |
| ADS7805 (Texas Instruments) | 16-bit, 100ksps; single-supply 5V; ±3LSB INL; no internal reference; 80dB SNR. | Half the sampling rate and lower SNR restrict use to non-critical DC or low-bandwidth applications. | Select ADS7805 where cost sensitivity outweighs speed/accuracy requirements and external reference is acceptable. |
Compared with AD976A and ADS7805, the LTC1606ACG#PBF offers superior throughput (250ksps vs ≤200ksps), better noise performance (90dB vs ≤80dB), integrated reference, and tighter INL (±2.0LSB vs ±3LSB), making it optimal for new industrial DAQ designs demanding accuracy, speed, and integration.
Availability
LTC1606ACG#PBF is available at Aetrix Electronics and suitable for industrial process control, high-speed PC-based data acquisition, multiplexed sensor systems, and digital signal processing front-ends requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for LTC1606ACG#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. (including former Linear Technology assets) is a global leader in high-performance analog, mixed-signal, and digital signal processing semiconductors.
The LTC1606ACG#PBF belongs to Linear's precision data acquisition product line, designed specifically for industrial and instrumentation applications demanding high DC accuracy, low noise, and robust operation across extended temperature ranges.
FAQ
What is the operating temperature range for the LTC1606ACG#PBF?
The LTC1606ACG#PBF is rated for industrial operation from –40°C to +85°C. This range is explicitly specified in the Absolute Maximum Ratings table and applies to all DC and AC performance parameters marked with the ● symbol, including INL, SNR, and conversion time - ensuring reliable operation in harsh environments without derating.
Does the LTC1606ACG#PBF require an external clock?
No, the LTC1606ACG#PBF does not require an external clock. It includes a factory-trimmed internal oscillator that delivers a typical conversion time of 2.5µs and guarantees 250ksps throughput. External clocking is neither supported nor necessary - simplifying design and reducing component count.
Can the LTC1606ACG#PBF operate with an external reference?
Yes, the LTC1606ACG#PBF supports external reference operation. When an external 2.30V–2.70V reference is applied to the REF pin, the internal bandgap is disabled, and linearity specifications remain valid. This configuration improves long-term drift performance beyond the ±5ppm/°C of the internal reference.
What is the purpose of the CAP pin on the LTC1606ACG#PBF?
The CAP pin on the LTC1606ACG#PBF provides a buffered 4.096V output (1.64× REF) that drives the internal capacitive DAC. It must be bypassed with a 10µF tantalum capacitor. While usable for low-current (<2mA) DC biasing, AC loading degrades ADC performance and is not recommended.
How does the BYTE pin affect data output formatting on the LTC1606ACG#PBF?
The BYTE pin on the LTC1606ACG#PBF controls byte ordering of the 16-bit parallel output. When BYTE is low, D15–D8 carry the MSB byte and D7–D0 carry the LSB byte. When BYTE is high, the mapping swaps: D15–D8 output the LSB byte and D7–D0 output the MSB byte - enabling flexible alignment with 8-bit microcontroller buses.
LTC1606ACG#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:
- -
LTC1606ACG#PBF FAQ
1.How can I place an order for LTC1606ACG#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1606ACG#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 LTC1606ACG#PBF reliable?
The price and inventory of LTC1606ACG#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1606ACG#PBF is usually 5 days.
3.What payment methods are accepted for LTC1606ACG#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1606ACG#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1606ACG#PBF?
LTC1606ACG#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1606ACG#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 LTC1606ACG#PBF?
For technical support, including LTC1606ACG#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1606ACG#PBF requirements.
6.How does Aetrix verify that LTC1606ACG#PBF is sourced from the original manufacturer or authorized distributors?
All LTC1606ACG#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 LTC1606ACG#PBF meets industry standards.
7.What is the process for return or replacement of LTC1606ACG#PBF?
All LTC1606ACG#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1606ACG#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 LTC1606ACG#PBF part is unused and in its original packaging.
Return procedure for LTC1606ACG#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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