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Analog Devices Inc. LTC1416CG#PBF
- Part No.:
- LTC1416CG#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
LTC1416CG#PBF.pdf
- Description:
- IC ADC 14BIT SAR 28SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,969
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Product details
Overview
LTC1416CG#PBF from Analog Devices (formerly Linear Technology) is a 14-bit, 400ksps successive-approximation ADC with ±2.5V true differential inputs, 80.5dB S/(N + D) at 100kHz, 70mW power dissipation, and 28-pin SSOP package. It integrates a precision 2.5V internal reference, 15MHz full-power bandwidth sample-and-hold, and µP-compatible parallel output - used in high-speed data acquisition systems requiring low distortion and high DC accuracy.
For engineers reviewing the LTC1416CG#PBF datasheet, LTC1416CG#PBF pinout, LTC1416CG#PBF application, or LTC1416CG#PBF equivalent, key selection considerations include guaranteed ±1.5LSB DNL and ±2LSB INL over temperature, nap/sleep shutdown modes drawing as low as 1µA, differential input common-mode rejection of 60dB up to 100kHz, and compatibility with ±5V supplies and external reference options.
Technical Context
The LTC1416CG#PBF employs a capacitive DAC-based successive approximation architecture with an integrated differential sample-and-hold that acquires signals within 100–400ns and supports full-scale input frequencies up to 200kHz (Nyquist). Its internal clock eliminates external timing components, and conversion is initiated by CONVST falling edge with BUSY indicating completion.
It features dual power-down modes: Nap mode (SHDN = 0V, CS = 0V) draws 1.6mA and enables sub-µs wake-up; Sleep mode (SHDN = 0V, CS = 5V) draws 1µA and requires 400ns wake-up before CONVST. The 14-bit parallel output latches data on BUSY rising edge with no pipeline delay, supporting direct interface to FIFOs, DSPs, and microprocessors.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit with no missing codes; delivers 16,384 discrete output levels for high dynamic range measurement. |
| 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 imaging applications. |
| INL / DNL | ±2LSB max INL and ±1.5LSB max DNL over temperature; guarantees monotonicity and accurate DC transfer function. |
| Input Range | ±2.5V true differential; rejects common-mode noise up to 60dB and supports single-ended operation with AIN– grounded. |
| Power Dissipation | 70mW at full speed; reduces to 0.1mW in Sleep mode for battery-powered portable instrumentation. |
| Aperture Jitter | 2ps RMS; minimizes sampling uncertainty for high-frequency signal fidelity and SFDR >94dB. |
Pinout & Package
Package: 28-lead plastic SSOP (G-grade), 5.6mm × 10.2mm body, 0.635mm lead pitch, JEDEC MO-153 compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN+ (1), AIN– (2) | Differential analog input pair | Accepts ±2.5V bipolar signal; enables 60dB CMRR and eliminates ground-loop noise without external circuitry. |
| VREF (3) | 2.5V internal reference output | Factory-trimmed bandgap source; bypassed with 1µF to AGND; can be overdriven for external reference use. |
| REFCOMP (4) | Reference amplifier compensation node | Requires 22µF tantalum || 0.1µF ceramic bypass; stabilizes internal reference amplifier for low-noise operation. |
| AGND (5), DGND (14) | Analog and digital ground terminals | Must be tied together at single point; separates analog return path from digital switching noise. |
| D13–D0 (6–13, 15–20) | 14-bit three-state parallel data outputs | MSB-to-LSB output bus; enabled by RD when CS is low; compatible with 5V TTL/CMOS logic families. |
| BUSY (25) | Conversion status indicator | Active-low open-drain output; data valid on rising edge; synchronizes read timing with microprocessor/DSP. |
| CONVST (23) | Conversion start trigger | Falling-edge sensitive; initiates SAR cycle; must remain low ≥40ns and avoid mid-conversion reassertion. |
| CS (24), SHDN (21) | Chip select and power control | CS selects active state; SHDN + CS combination configures Nap (fast wake) or Sleep (ultra-low IDD) mode. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated 2.5V reference with ±15ppm/°C tempco | Eliminates need for external reference IC; maintains full-scale accuracy across 0°C to 70°C commercial range. |
| True differential input with 15MHz bandwidth | Supports undersampling of RF signals beyond Nyquist; enables spectrum analysis without front-end downconversion. |
| Two-stage power shutdown (Nap/Sleep) | Reduces system power by >99% during idle periods while preserving fast wake-up capability for burst-mode acquisition. |
| No pipeline delay, zero-latency output | Delivers conversion result immediately after BUSY rises; simplifies timing-critical interfaces to real-time processors. |
| Guaranteed AC/DC specs over temperature | Specified min/max values for S/(N + D), THD, INL, DNL apply across full 0°C to 70°C operating range - not just 25°C typical. |
Applications
| Telecommunications Test Equipment | Digital Signal Processing Front-End |
|---|---|
|
Use Scenario: Capturing baseband I/Q signals in 5G NR channel emulators and vector signal analyzers. IC Role / Device Role / Timing Role: High-fidelity digitizer for 100kHz–200kHz modulated waveforms with minimal harmonic distortion. Use Value: 93dB THD at 100kHz preserves modulation accuracy; differential inputs reject PCB layout noise in dense RF subsystems. |
Use Scenario: Real-time sensor data conditioning in industrial motor control DSPs with multi-axis feedback loops. IC Role / Device Role / Timing Role: Synchronized analog acquisition block feeding TI C2000 or Analog Devices SHARC processors. Use Value: 400ns acquisition time enables <1µs total conversion cycle; parallel interface avoids SPI bottlenecks in high-throughput control loops. |
| Multiplexed Data Acquisition Systems | Imaging System Digitization |
|
Use Scenario: 16-channel medical ECG monitor with simultaneous lead sampling and noise suppression. IC Role / Device Role / Timing Role: Channel-isolated ADC per analog front-end, driven by multiplexer with precise timing control. Use Value: ±1.5LSB DNL ensures consistent gain matching across channels; 60dB CMRR rejects 50/60Hz mains interference. |
Use Scenario: Flat-panel X-ray detector readout where pixel charge integration requires low-noise, high-linearity digitization. IC Role / Device Role / Timing Role: Final-stage digitizer for CCD/CMOS analog video output with precise offset and gain stability. Use Value: Internal 2.5V reference provides <±40LSB full-scale error; 80dB S/(N + D) at Nyquist preserves contrast resolution in low-dose imaging. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 14-bit, 400ksps ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS8325IPFBT | 16-bit, 100ksps SAR ADC; SPI interface only; no internal reference; requires external 2.5V ref and driver amp. | Better resolution but lower throughput; suited for precision DC measurements, not high-speed AC analysis. | Select when ENOB >14.5 bits required and 400ksps is unnecessary; avoid if parallel bus or internal ref needed. |
| MAX1190ECM+ | 14-bit, 400ksps; single-supply (2.7–3.6V); no negative rail support; 72dB S/(N + D) at 100kHz. | Optimized for portable battery-powered systems; lacks bipolar input capability and ±5V supply flexibility. | Select for low-voltage embedded designs where ±5V rails unavailable; avoid for high-accuracy AC applications needing >80dB S/(N + D). |
Compared with LTC1416CG#PBF, ADS8325IPFBT trades speed and integration for resolution and serial simplicity, while MAX1190ECM+ sacrifices dynamic performance and supply flexibility to achieve ultra-low voltage operation - making LTC1416CG#PBF the optimal choice for mixed-signal systems demanding both speed and precision under ±5V rails.
Availability
LTC1416CG#PBF is available at Aetrix Electronics and suitable for telecommunications test equipment, digital signal processing front-ends, and multiplexed data acquisition systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for LTC1416CG#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 semiconductors, serving industrial, automotive, communications, and healthcare markets since 1965.
The LTC1416CG#PBF belongs to ADI's legacy Linear Technology precision data converter product line, designed specifically for high-speed, high-accuracy instrumentation and signal acquisition where low distortion, guaranteed linearity, and robust power management are critical.
FAQ
What is the operating temperature range for the LTC1416CG#PBF?
The LTC1416CG#PBF is specified for the commercial temperature range of 0°C to 70°C. All key AC and DC specifications - including ±2LSB INL, ±1.5LSB DNL, 80.5dB S/(N + D), and 70mW power dissipation - are guaranteed across this full range, not just at 25°C. This makes LTC1416CG#PBF suitable for office and lab environments where ambient conditions remain within standard commercial limits.
Does the LTC1416CG#PBF require an external reference, or does it have an internal one?
The LTC1416CG#PBF includes a factory-trimmed, temperature-compensated 2.5V internal reference accessible at the VREF pin (Pin 3), eliminating the need for an external reference in most applications. The REFCOMP pin (Pin 4) must be bypassed with 22µF || 0.1µF for stability. However, the VREF pin can be overdriven with an external precision reference (e.g., LT1019A-2.5) for improved accuracy or different full-scale ranges - so LTC1416CG#PBF supports both internal and external reference configurations.
How does the LTC1416CG#PBF handle power-down modes, and what are their current draws?
The LTC1416CG#PBF offers two distinct power-down modes controlled by SHDN and CS pins: Nap mode (SHDN = 0V, CS = 0V) draws 1.6mA and wakes in <400ns; Sleep mode (SHDN = 0V, CS = 5V) draws just 1µA and wakes in 400ns. Both modes retain register state and reference bias. These low-power states make LTC1416CG#PBF ideal for battery-operated instruments and systems requiring rapid duty-cycled acquisition without sacrificing startup latency.
Can the LTC1416CG#PBF accept single-ended inputs, or is it strictly differential?
The LTC1416CG#PBF supports both true differential and single-ended input configurations. For single-ended use, tie AIN– (Pin 2) to AGND and drive AIN+ (Pin 1) with a 0V to 5V signal - the internal reference and architecture maintain full 14-bit performance. Its differential topology inherently rejects common-mode noise, but the device functions correctly and meets all specifications in single-ended mode, giving designers flexibility without external level-shifting circuitry.
What is the maximum input frequency the LTC1416CG#PBF can accurately digitize at full 400ksps rate?
At its maximum 400ksps sampling rate, the LTC1416CG#PBF maintains 80dB S/(N + D) and 90dB THD at the Nyquist frequency of 200kHz, meaning it can accurately digitize full-scale sine waves up to 200kHz while preserving signal integrity. Its 15MHz full-power bandwidth further allows undersampling of higher-frequency signals (e.g., IF stages), provided aliasing is managed externally - confirming LTC1416CG#PBF's suitability for spectrum analysis and RF digitization tasks.
LTC1416CG#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:
- 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#PBF FAQ
1.How can I place an order for LTC1416CG#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1416CG#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 LTC1416CG#PBF reliable?
The price and inventory of LTC1416CG#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1416CG#PBF is usually 5 days.
3.What payment methods are accepted for LTC1416CG#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1416CG#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1416CG#PBF?
LTC1416CG#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1416CG#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 LTC1416CG#PBF?
For technical support, including LTC1416CG#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1416CG#PBF requirements.
6.How does Aetrix verify that LTC1416CG#PBF is sourced from the original manufacturer or authorized distributors?
All LTC1416CG#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 LTC1416CG#PBF meets industry standards.
7.What is the process for return or replacement of LTC1416CG#PBF?
All LTC1416CG#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1416CG#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 LTC1416CG#PBF part is unused and in its original packaging.
Return procedure for LTC1416CG#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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