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Analog Devices Inc. LTC1416CG#TRPBF
- Part No.:
- LTC1416CG#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
LTC1416CG#TRPBF.pdf
- Description:
- IC ADC 14BIT SAR 28SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,008
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Product details
Overview
LTC1416CG#TRPBF from Analog Devices (formerly Linear Technology) is a 14-bit, 400ksps successive-approximation ADC with ±2.5V true differential input range, 80.5dB S/(N + D) at 100kHz, 70mW power dissipation at ±5V supplies, and integrated 2.5V reference. It serves as a complete, low-power sampling front-end in high-speed data acquisition systems requiring high dynamic range and DC accuracy.
For engineers reviewing the LTC1416CG#TRPBF datasheet, LTC1416CG#TRPBF pinout, LTC1416CG#TRPBF application, or LTC1416CG#TRPBF equivalent, key selection criteria include guaranteed ±1.5LSB DNL and ±2LSB INL over temperature, 15MHz full-power bandwidth, nap/sleep shutdown modes, and µP-compatible parallel 14-bit output with no pipeline delay.
Technical Context
The LTC1416CG#TRPBF implements a capacitor-based successive approximation register (SAR) architecture with an internal differential sample-and-hold circuit that acquires signals up to 15MHz bandwidth and provides 60dB common-mode rejection across frequency. Its timing is controlled by asynchronous digital inputs (CONVST, CS, RD) and features BUSY-driven data-ready signaling.
It integrates a factory-trimmed, curvature-corrected bandgap reference (2.500V ±20mV) buffered via VREF (Pin 3) and REFCOMP (Pin 4), supporting both internal and external reference operation. Power management includes two distinct shutdown states: Nap mode (1.6mA, 4mW) and Sleep mode (1µA, 0.1mW), selected via SHDN and CS logic levels.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit with no missing codes; delivers 16,384 discrete output levels for high-fidelity signal digitization. |
| Sampling Rate | 400ksps maximum; enables real-time capture of signals up to 200kHz Nyquist frequency. |
| S/(N + D) | 80.5dB at 100kHz input; ensures >13 effective bits for precision spectral analysis and communications applications. |
| INL / DNL | ±2LSB max INL, ±1.5LSB max DNL over full temperature range; guarantees monotonicity and accurate DC measurement linearity. |
| Input Range | ±2.5V true differential; rejects ground loops and common-mode noise without external instrumentation amplifiers. |
| Power Dissipation | 70mW at full speed; reduces thermal load in dense PCB layouts and enables battery-powered portable instrumentation. |
| Acquisition Time | 100–400ns; allows direct interfacing with low-impedance sources or fast op amps (e.g., LT1223, LT1227) without added settling delay. |
Pinout & Package
Package: 28-lead plastic SSOP (G-grade, commercial temperature range 0°C to 70°C). Pin pitch 0.65mm, body width 5.6mm, JEDEC MS-013AC compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN+ (1), AIN– (2) | Differential analog input pair | Accepts ±2.5V bipolar signals; common-mode voltage independent of conversion result; 60dB CMRR up to 100kHz. |
| VREF (3) | 2.5V reference output | Internal bandgap reference; bypass with 1µF to AGND; can be overdriven externally to scale input range. |
| REFCOMP (4) | Reference amplifier compensation | Stabilizes internal reference amplifier; requires 22µF tantalum || 0.1µF ceramic to AGND for optimal noise performance. |
| AGND (5), DGND (14) | Analog and digital ground | Must be tied together at single point; separates analog return paths from digital switching noise. |
| D13–D0 (6–13, 15–20) | 14-bit parallel three-state data outputs | MSB-to-LSB output bus; driven only when CS = LOW and RD = LOW; compatible with 5V TTL/CMOS logic. |
| BUSY (25) | Conversion status indicator | Active-low open-drain output; falls at CONVST edge, rises when conversion completes; data valid on rising edge. |
| CONVST (23) | Conversion start trigger | Asynchronous active-low edge-sensitive input; initiates SAR cycle; must remain low ≥40ns for reliable start. |
| CS (24) | Chip select & shutdown mode control | Selects device and defines shutdown state: CS=LOW + SHDN=LOW → Nap mode; CS=HIGH + SHDN=LOW → Sleep mode. |
| SHDN (21) | Power shutdown enable | Active-low input; controls entry into low-power states; wake-up time 400ns from Nap, longer from Sleep. |
| AVDD (28), DVDD (27), VSS (26) | Analog/digital positive and negative supplies | AVDD/DVDD = +5V ±5%, VSS = –5V ±5%; separate analog/digital supplies reduce supply coupling noise. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 2.5V reference with REFCOMP compensation | Eliminates need for external reference IC and reduces BOM count; 15ppm/°C tempco supports stable operation over temperature. |
| True differential input sample-and-hold | Enables direct connection to transducer bridges or current-sense resistors without level-shifting; maintains linearity across full common-mode range. |
| Nap and Sleep shutdown modes | Reduces power to 4mW (Nap) or 0.1mW (Sleep); supports rapid wake-up (400ns) for burst-mode acquisition in portable test equipment. |
| µP-compatible parallel interface with BUSY signaling | Removes need for FIFO or glue logic; BUSY edge synchronizes data capture with microprocessor or DSP read cycles. |
| Guaranteed AC/DC specs over temperature | ±2LSB INL and 80dB S/(N + D) at Nyquist validated from 0°C to 70°C; simplifies system-level calibration and qualification. |
Applications
| Telecommunications Baseband | Digital Signal Processing Front-End |
|---|---|
|
Use Scenario: Digitizing IF signals in software-defined radio receivers operating up to 200kHz baseband bandwidth. IC Role / Device Role / Timing Role: High-fidelity 14-bit sampling ADC providing clean spectral data for FPGA-based FFT processing. Use Value: 80.5dB S/(N + D) at 100kHz preserves modulation fidelity; ±2.5V differential input rejects RF coupling noise on PCB traces. |
Use Scenario: Capturing sensor outputs in real-time vibration analysis systems using fixed-point DSPs. IC Role / Device Role / Timing Role: Low-latency, no-pipeline-delay ADC feeding deterministic sample streams to TI C6000 or Analog Devices SHARC processors. Use Value: 400ns acquisition time and 2.2µs conversion enable tight loop timing; 14-bit resolution resolves sub-millivolt mechanical displacement changes. |
| Multiplexed Data Acquisition | Imaging System Digitizer |
|
Use Scenario: Channel-scanning in industrial PLC analog input modules with 16-channel multiplexer and anti-alias filtering. IC Role / Device Role / Timing Role: Precision SAR ADC with Nap mode enabling per-channel power gating to limit average system power. Use Value: Guaranteed ±1.5LSB DNL ensures consistent channel-to-channel gain matching; 70mW full-speed dissipation avoids thermal drift in dense I/O modules. |
Use Scenario: Converting CCD or CMOS line-scan sensor outputs in medical X-ray or document scanning equipment. IC Role / Device Role / Timing Role: High-linearity ADC capturing analog pixel voltages with minimal harmonic distortion for artifact-free image reconstruction. Use Value: 93dB THD at 100kHz suppresses ghosting and streaking artifacts; 15MHz full-power bandwidth accommodates fast pixel clock edges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 14-bit, 400ksps SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7865BSZ-1 | 4-channel simultaneous-sampling 14-bit SAR ADC; 500ksps per channel; requires external reference; 100mW typical power. | Designed for multi-channel synchronized acquisition (e.g., motor phase current sensing); lacks integrated reference and differential input flexibility. | Choose AD7865BSZ-1 when simultaneous sampling across ≥2 channels is required; LTC1416CG#TRPBF is preferred for single-channel cost-optimized designs with integrated reference. |
| MAX1167BCAP+ | Single 14-bit 250ksps SAR ADC; internal reference; SPI interface; 12mW power; 20-pin TQFN package. | Targeted at space-constrained embedded systems with serial interface constraints; lower speed and no BUSY-driven parallel output. | Choose MAX1167BCAP+ for ultra-low-power, serial-interface applications where 250ksps suffices; LTC1416CG#TRPBF remains optimal for µP-connected 400ksps parallel systems needing guaranteed INL/DNL. |
Compared with AD7865BSZ-1 and MAX1167BCAP+, the LTC1416CG#TRPBF uniquely combines integrated 2.5V reference, true differential ±2.5V input, and µP-compatible parallel interface at 400ksps - making it the most direct solution for single-channel, high-dynamic-range, low-component-count data acquisition.
Availability
LTC1416CG#TRPBF is available at Aetrix Electronics and suitable for telecommunications baseband digitization, digital signal processing front-ends, and multiplexed industrial data acquisition requiring stable component supply and long-term lifecycle support.
Supply support for LTC1416CG#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 semiconductors, serving industrial, automotive, communications, and healthcare markets.
The LTC1416CG#TRPBF belongs to ADI's legacy Linear Technology precision data converter family, designed specifically for high-speed, high-accuracy sampling applications where low power, integrated references, and robust AC/DC specifications are critical.
FAQ
What is the guaranteed integral nonlinearity (INL) specification for the LTC1416CG#TRPBF over temperature?
The LTC1416CG#TRPBF guarantees ±2LSB maximum integral nonlinearity over its full commercial temperature range (0°C to 70°C). This specification is tested and ensured across all production units, enabling precise DC measurements in instrumentation and sensor conditioning applications without post-calibration correction.
Does the LTC1416CG#TRPBF require an external reference, or does it include an internal one?
The LTC1416CG#TRPBF includes a factory-trimmed, temperature-compensated 2.500V internal bandgap reference accessible at the VREF pin (Pin 3). It operates fully self-contained with this reference; however, the VREF pin can be overdriven to use an external reference such as the LT1019A-2.5 for enhanced stability or custom scaling.
How does the BUSY signal function during conversion in the LTC1416CG#TRPBF?
In the LTC1416CG#TRPBF, the BUSY pin goes low on the falling edge of CONVST and remains low throughout conversion. Data becomes valid on the rising edge of BUSY, which occurs after 1.5–2.2µs. This edge-synchronized timing eliminates setup/hold uncertainty and enables direct connection to microprocessor wait-state inputs or DSP DMA triggers.
What are the power consumption differences between Nap mode and Sleep mode in the LTC1416CG#TRPBF?
In Nap mode (SHDN = LOW, CS = LOW), the LTC1416CG#TRPBF draws 1.6mA from each supply (±5V), dissipating ~4mW. In Sleep mode (SHDN = LOW, CS = HIGH), it draws just 1µA per supply, reducing power to ~0.1mW. Wake-up from Nap mode takes 400ns; Sleep mode recovery is slower and intended for extended idle periods.
Can the LTC1416CG#TRPBF accept single-ended input signals, or is it strictly differential?
The LTC1416CG#TRPBF supports both configurations: it accepts true differential inputs (AIN+ and AIN–) for optimal noise rejection, but also operates in single-ended mode by grounding AIN– and applying the signal to AIN+. The datasheet confirms DC linearity and AC performance specifications apply in both modes, though common-mode rejection is naturally forfeited in single-ended use.
LTC1416CG#TRPBF Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc.
- Series:
- -
- Package/Case:
- 28-SSOP (0.209", 5.30mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- Number of Bits:
- 14
- Sampling Rate (Per Second):
- 400k
- Number of Inputs:
- 1
- Input Type:
- Differential, 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:
- -
LTC1416CG#TRPBF FAQ
1.How can I place an order for LTC1416CG#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1416CG#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 LTC1416CG#TRPBF reliable?
The price and inventory of LTC1416CG#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1416CG#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC1416CG#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1416CG#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1416CG#TRPBF?
LTC1416CG#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1416CG#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 LTC1416CG#TRPBF?
For technical support, including LTC1416CG#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1416CG#TRPBF requirements.
6.How does Aetrix verify that LTC1416CG#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC1416CG#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 LTC1416CG#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC1416CG#TRPBF?
All LTC1416CG#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1416CG#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 LTC1416CG#TRPBF part is unused and in its original packaging.
Return procedure for LTC1416CG#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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