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Analog Devices Inc. LTC1416IG#PBF
- Part No.:
- LTC1416IG#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
LTC1416IG#PBF.pdf
- Description:
- IC ADC 14BIT SAR 28SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,177
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Product details
Overview
LTC1416IG#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 integrated 2.5V reference. It serves as a complete high-dynamic-range sampling front-end in precision data acquisition systems requiring low distortion and high common-mode rejection.
For engineers reviewing the LTC1416IG#PBF datasheet, LTC1416IG#PBF pinout, LTC1416IG#PBF application, or LTC1416IG#PBF equivalent, key selection criteria include guaranteed ±2LSB INL over temperature, 15MHz full-power bandwidth, nap/sleep shutdown modes, µP-compatible parallel interface with BUSY/CONVST timing, and SSOP-28 package compatibility with industrial-grade thermal range (–40°C to 85°C).
Technical Context
The LTC1416IG#PBF employs a capacitive DAC-based successive approximation architecture with an internal sample-and-hold that acquires signals in ≤400ns and converts in 1.5–2.2µs. Its differential input stage provides 60dB CMRR up to 100kHz and supports both single-ended (AIN– grounded) and fully differential configurations without external gain stages.
Timing is controlled via asynchronous digital inputs: CONVST initiates conversion on its falling edge; BUSY indicates active conversion and data validity on its rising edge; RD enables three-state output drivers when CS is low. The device operates from ±5V supplies (±4.75V to ±5.25V), with separate AVDD/DVDD pins and isolated AGND/DGND planes for optimal noise separation.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit with no missing codes - guarantees monotonic transfer function across full operating range. |
| Sampling Rate | 400ksps maximum - enables real-time capture of signals up to 200kHz Nyquist frequency. |
| S/(N + D) | 80.5dB at 100kHz input - delivers ≥13.1 effective bits for high-fidelity signal reconstruction. |
| INL / DNL | ±2LSB max / ±1.5LSB max over temperature - ensures accurate amplitude linearity in closed-loop control and calibration-critical systems. |
| Input Range | ±2.5V differential - supports direct connection to instrumentation amplifiers and eliminates level-shifting circuitry. |
| Power Dissipation | 70mW typical at full rate; 0.1mW in sleep mode - enables battery-powered or thermally constrained embedded DAQ designs. |
| Full-Power Bandwidth | 15MHz - allows undersampling of IF signals in communications receivers without aliasing-induced SNR loss. |
Pinout & Package
Package: 28-pin Plastic SSOP (G package), 5.6mm × 10.2mm body, 0.65mm pitch, JEDEC MO-153 compliant. Thermal resistance θJA = 95°C/W; rated for industrial temperature range (–40°C to 85°C).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN+ (1), AIN– (2) | Differential analog input pair | Accepts ±2.5V true differential signals; 60dB CMRR rejects ground loops and EMI up to 100kHz. |
| VREF (3) | 2.5V reference output | Internal bandgap reference buffered through 4kΩ series resistor; bypass with 1µF to AGND for low-noise operation. |
| REFCOMP (4) | Reference amplifier compensation | Stabilizes internal reference amplifier; requires 22µF tantalum || 0.1µF ceramic to AGND. |
| AGND (5), DGND (14) | Analog/digital ground returns | Must be tied together at single point near device; separates noise paths for SAR logic and analog core. |
| D13–D0 (6–13, 15–20) | 14-bit parallel data outputs | Three-state, µP-compatible outputs; valid on BUSY rising edge; driven only when CS and RD are low. |
| SHDN (21) | Power shutdown control | Active-low; selects nap mode (CS=0) or sleep mode (CS=1); wake-up time 400ns (nap) or 1µA quiescent current (sleep). |
| RD (22) | Data read enable | Active-low; enables output drivers after BUSY rises - eliminates need for external latch or FIFO handshake logic. |
| CONVST (23) | Conversion start trigger | Falling-edge sensitive; initiates SAR cycle; minimum pulse width 40ns; must remain low until BUSY rises. |
| CS (24) | Chip select & mode control | Enables CONVST/RD recognition; sets shutdown mode with SHDN; must be low for normal operation. |
| BUSY (25) | Conversion status indicator | Active-low open-drain output; falls at CONVST edge, rises when conversion completes and data is latched. |
| VSS (26) | Negative supply rail | –5V (–4.75V to –5.25V); bypass with 10µF tantalum || 0.1µF ceramic to AGND for PSRR >80dB at 100kHz. |
| DVDD (27), AVDD (28) | Digital/analog positive supplies | Both require +5V (4.75V–5.25V); DVDD powers logic, AVDD powers analog core; separate bypassing required. |
Key Features
| Feature | Design Value |
|---|---|
| True differential input architecture | Rejects common-mode noise up to 60dB while preserving full 14-bit resolution - eliminates need for external instrumentation amps in noisy industrial environments. |
| Integrated 2.5V reference with REFCOMP | Factory-trimmed ±0.8% initial accuracy and ±15ppm/°C tempco; REFCOMP pin enables stable 22µF bypassing for <10µV RMS noise floor. |
| Two-tier shutdown (nap/sleep) | Nap mode draws 1.6mA/20µA (IDD/ISS) for fast wake-up (<400ns); sleep mode draws 1µA total - extends battery life in portable spectrum analyzers. |
| No pipeline delay | Conversion result appears on D13–D0 immediately after BUSY rises - simplifies timing in real-time DSP interfaces without FIFO buffering. |
| 15MHz full-power bandwidth | Supports undersampling of RF/IF signals up to 15MHz without gain-bandwidth limitations - enables direct digitization in software-defined radio front-ends. |
Applications
| Telecommunications Baseband Processing | Digital Signal Processing Front-End |
|---|---|
Use Scenario: Digitizing I/Q baseband signals from quadrature demodulators in cellular infrastructure equipment. IC Role / Device Role / Timing Role: High-linearity 14-bit ADC capturing 0–200kHz complex waveforms with minimal harmonic distortion. Use Value: 80.5dB S/(N + D) and –93dB THD preserve EVM performance in LTE/WCDMA transceivers without post-processing correction. |
Use Scenario: Sampling sensor outputs in real-time vibration analysis systems using FPGA-based FFT engines. IC Role / Device Role / Timing Role: Low-latency parallel-output ADC feeding 100MHz+ data buses with deterministic BUSY-driven handshaking. Use Value: 2.2µs conversion time and zero pipeline delay enable sub-microsecond loop closure in adaptive filtering applications. |
| Multiplexed Industrial Data Acquisition | High-Speed Imaging Systems |
Use Scenario: Channel-scanning in 16-channel programmable logic controller (PLC) analog input modules. IC Role / Device Role / Timing Role: Precision ADC with ±2LSB INL ensuring traceable measurement accuracy across temperature drift. Use Value: Differential inputs reject 50/60Hz mains noise and motor drive harmonics in factory-floor environments. |
Use Scenario: Capturing line-scan CCD outputs in medical X-ray or industrial inspection cameras. IC Role / Device Role / Timing Role: High-throughput ADC interfacing directly to CMOS image sensors with precise pixel clock synchronization. Use Value: 400ksps sustained rate and 15MHz bandwidth support >1000-line/sec scanning at 14-bit depth without aliasing artifacts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed, high-resolution ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD7892BRZ-1 | 14-bit, 400ksps, but uses external reference only; no internal VREF/REFCOMP; 28-lead SOIC package. | Requires external 2.5V reference and compensation network; lacks nap/sleep modes - higher system power in portable use. | Select when board space permits SOIC and reference flexibility outweighs integrated simplicity. |
| MAX1190ECM+ | 14-bit, 400ksps, internal reference, but only 72dB S/(N + D) at 100kHz; 28-pin TSSOP; single +5V supply only. | Lower AC performance limits dynamic range in spectrum analysis; no bipolar input support - needs level-shifting for ±2.5V signals. | Select for cost-sensitive, single-supply industrial DAQ where 12-bit ENOB suffices. |
Compared with AD7892BRZ-1 and MAX1190ECM+, the LTC1416IG#PBF uniquely combines integrated 2.5V reference with REFCOMP stability, true differential ±2.5V input, and dual shutdown modes - making it optimal for compact, low-power, high-fidelity data acquisition where layout area and thermal management are constrained.
Availability
LTC1416IG#PBF is available at Aetrix Electronics and suitable for telecommunications baseband processing, digital signal processing front-ends, and multiplexed industrial data acquisition systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC1416IG#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 with precision data conversion solutions.
The LTC1416IG#PBF belongs to ADI's legacy Linear Technology precision ADC product line, designed specifically for high-dynamic-range, low-power, µP-interfaced data acquisition in thermally demanding and noise-sensitive environments.
FAQ
What is the guaranteed integral nonlinearity (INL) specification for LTC1416IG#PBF over its full operating temperature range?
The LTC1416IG#PBF guarantees ±2LSB maximum integral nonlinearity over the industrial temperature range of –40°C to 85°C. This specification ensures amplitude fidelity in closed-loop control, calibration, and metrology applications where code-to-code transition accuracy is critical. The value is tested and specified per the datasheet's G-grade conditions and applies to both internal and external reference configurations.
Does LTC1416IG#PBF support single-ended analog input operation, and how is it configured?
Yes, LTC1416IG#PBF supports single-ended operation by grounding the AIN– pin (Pin 2) and applying the signal to AIN+ (Pin 1). The device maintains its ±2.5V full-scale range and 60dB common-mode rejection remains applicable to noise on the grounded AIN– path. DC accuracy specifications including offset and INL remain valid under this configuration, as confirmed in Note 6 of the datasheet.
What are the power supply requirements and decoupling recommendations for LTC1416IG#PBF?
LTC1416IG#PBF requires ±5V supplies (AVDD = DVDD = +5V, VSS = –5V), with operating ranges of ±4.75V to ±5.25V. Each supply must be decoupled: AVDD and VSS with 10µF tantalum || 0.1µF ceramic to AGND; DVDD similarly referenced to DGND (tied to AGND); VREF bypassed with 1µF to AGND; REFCOMP with 22µF tantalum || 0.1µF ceramic to AGND.
How does the BUSY signal timing relate to data validity on LTC1416IG#PBF outputs?
On LTC1416IG#PBF, the BUSY signal goes low at the CONVST falling edge and rises when conversion completes and the 14-bit result is latched into the output registers. Data on D13–D0 is valid and stable on the rising edge of BUSY - no additional setup/hold delay is required before reading. This eliminates pipeline latency and simplifies interface timing with microprocessors and FPGAs.
Can LTC1416IG#PBF operate with an external reference, and what is the impact on full-scale error?
Yes, LTC1416IG#PBF accepts external references applied to the VREF pin. When using a 2.5V external reference, full-scale error is specified as ±10 to ±40LSB - tighter than the ±20 to ±60LSB range with the internal reference. This improvement arises from elimination of internal reference tempco and line regulation errors, making external referencing advantageous in high-accuracy calibration systems.
LTC1416IG#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:
- -40°C ~ 85°C
- Supplier Device Package:
- 28-SSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC1416IG#PBF FAQ
1.How can I place an order for LTC1416IG#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1416IG#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 LTC1416IG#PBF reliable?
The price and inventory of LTC1416IG#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1416IG#PBF is usually 5 days.
3.What payment methods are accepted for LTC1416IG#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1416IG#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1416IG#PBF?
LTC1416IG#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1416IG#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 LTC1416IG#PBF?
For technical support, including LTC1416IG#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1416IG#PBF requirements.
6.How does Aetrix verify that LTC1416IG#PBF is sourced from the original manufacturer or authorized distributors?
All LTC1416IG#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 LTC1416IG#PBF meets industry standards.
7.What is the process for return or replacement of LTC1416IG#PBF?
All LTC1416IG#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1416IG#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 LTC1416IG#PBF part is unused and in its original packaging.
Return procedure for LTC1416IG#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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