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Analog Devices Inc. LTC1418AIG#TRPBF
- Part No.:
- LTC1418AIG#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
LTC1418AIG#TRPBF.pdf
- Description:
- IC ADC 14BIT SAR 28SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,809
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Product details
Overview
LTC1418AIG#TRPBF from Analog Devices (formerly Linear Technology) is a low-power, 14-bit, 200ksps analog-to-digital converter with selectable parallel or SPI/MICROWIRE-compatible serial output. It operates from single 5V or ±5V supplies, features an integrated 2.5V reference and sample-and-hold, delivers ±1.25LSB INL and ±1LSB DNL over temperature, and supports unipolar (0V–4.096V) or bipolar (±2.048V) input ranges - ideal for battery-powered data acquisition and isolated signal conditioning.
For engineers reviewing the LTC1418AIG#TRPBF datasheet, LTC1418AIG#TRPBF pinout, LTC1418AIG#TRPBF application, or LTC1418AIG#TRPBF equivalent, key selection criteria include its dual-supply flexibility, guaranteed no missing codes across –40°C to +85°C, 81.5dB S/(N+D) at Nyquist, nap/sleep shutdown modes, and 28-lead SSOP package compatibility with space-constrained industrial and medical systems.
Technical Context
The LTC1418AIG#TRPBF implements a successive approximation register (SAR) architecture with an internal differential capacitive DAC and high-speed comparator. Its sample-and-hold acquires input signals in ≤1µs and holds during conversion, enabling precise timing control via CONVST falling edge and BUSY status signaling.
Digital interface flexibility is built into the core design: SER/PAR pin selects between 14-bit parallel output (D13–D0) or serial mode where D0 (EXT/INT), D3 (SCLK), D4 (EXTCLKIN), D1 (DOUT), and D2 (CLKOUT) configure master/slave SPI operation up to 10MHz clock rate - supporting direct connection to microcontrollers and DSPs without external logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit with guaranteed no missing codes over full temperature range - ensures monotonicity and deterministic digital output for precision measurement. |
| Sampling Rate | 200ksps maximum - supports real-time capture of signals up to 100kHz Nyquist bandwidth without aliasing in baseband applications. |
| INL / DNL | ±1.25LSB / ±1LSB max (industrial temp) - enables accurate DC measurements and linearity-critical applications like sensor calibration. |
| Power Dissipation | 15mW typical (unipolar), 26.5mW max (bipolar) - allows continuous operation in thermally constrained portable or remote systems. |
| S/(N + D) | 81.5dB at 97.5kHz input - provides >13.5 effective bits for high-fidelity audio, telecom, and instrumentation digitization. |
| Reference | Internal 2.500V ±20ppm/°C (industrial) - eliminates need for external reference IC while maintaining stable scaling over temperature. |
| Supply Range | Single 5V (±5%); or ±5V (±5%) for bipolar - simplifies power design with common LDOs and avoids complex dual-rail generation. |
Pinout & Package
Package: 28-lead plastic SSOP (G package), 5.6mm × 10.2mm body, 0.635mm pitch, RoHS-compliant lead-free finish. Thermal resistance θJA = 95°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN+, AIN– | Differential analog input | High-impedance inputs accepting 0V–4.096V (unipolar) or ±2.048V (bipolar); common-mode rejection minimizes noise coupling. |
| VREF | 2.5V reference output | Stable internal reference source; requires 1µF bypass to AGND for low-noise operation. |
| REFCOMP | 4.096V reference bypass | Compensation node for internal 4.096V reference; must be bypassed with 10µF tantalum + 0.1µF ceramic. |
| AGND, DGND | Analog/digital ground | Separate ground pins reduce digital switching noise injection into analog path; must be tied together at single point. |
| D13–D0 | Data outputs (parallel) | Three-state, LSB-aligned outputs; SER/PAR pin determines active mode - parallel enables fast microprocessor interfacing. |
| CONVST, BUSY | Conversion control/status | Falling-edge-triggered start and open-drain busy flag allow precise timing synchronization with host controller. |
| SHDN, CS, RD | Power and interface control | SHDN + CS combination selects Nap (fast wake-up) or Sleep (ultra-low current) shutdown; RD enables output drivers only when CS is low. |
| D0 (EXT/INT), D4 (EXTCLKIN) | Serial clock configuration | D0 selects internal or external conversion clock; D4 accepts external clock up to 4.5MHz when EXT/INT = high. |
Key Features
| Feature | Design Value |
|---|---|
| Selectable I/O mode | Hardware-configurable SER/PAR pin enables either 14-bit parallel bus or SPI/MICROWIRE serial interface - reduces PCB routing complexity and supports legacy or resource-limited hosts. |
| Two-tier shutdown | Nap mode (2µA IDD) enables sub-microsecond wake-up; Sleep mode (0.1µA IDD) extends battery life in dormant periods - critical for intermittent-sampling IoT sensors. |
| Differential input architecture | True differential sampling with matched input capacitance (25pF sample / 5pF hold) rejects common-mode noise and supports transformer- or op-amp-isolated front-ends. |
| Integrated reference | On-chip 2.500V ±20ppm/°C reference eliminates external component count and layout sensitivity while maintaining <±10LSB full-scale error over temperature. |
| Flexible supply operation | Supports unipolar (5V only) or bipolar (±5V) configurations with identical performance specs - simplifies design reuse across measurement ranges without hardware change. |
Applications
| Remote Data Acquisition | Battery Operated Systems |
|---|---|
Use Scenario: Wireless sensor nodes collecting vibration, temperature, or pressure data in oil/gas field equipment with limited power and isolation requirements. IC Role / Device Role / Timing Role: Primary ADC capturing conditioned analog signals; uses internal reference and nap-mode shutdown between samples to minimize average current draw. Use Value: 15mW typical power and guaranteed no missing codes over –40°C to +85°C ensure reliable long-term deployment in harsh environments without recalibration. | Use Scenario: Portable ECG monitor acquiring biopotential signals from dry electrodes with ultra-low standby power budget. IC Role / Device Role / Timing Role: High-fidelity front-end digitizer operating in unipolar mode; leverages low 1µs acquisition time and rail-to-rail input amplifier compatibility. Use Value: 81.5dB S/(N+D) and ±1LSB DNL preserve diagnostic signal integrity while sleep-mode current (0.1µA) extends battery life beyond 1 year. |
| Digital Signal Processing | Medical Instrumentation |
Use Scenario: Real-time spectral analysis module in handheld spectrum analyzer requiring high dynamic range at 100kHz input frequencies. IC Role / Device Role / Timing Role: Precision sampling stage feeding FPGA-based FFT engine; uses serial interface to conserve I/O pins and simplify timing closure. Use Value: 94dB THD and 95dB SFDR at Nyquist enable clean harmonic separation and accurate amplitude measurement of narrowband signals. | Use Scenario: Patient monitoring system digitizing EEG/EMG signals with strict linearity and low distortion requirements per IEC 60601. IC Role / Device Role / Timing Role: Isolated ADC in analog front-end; operates with external ±2.048V reference and differential input to reject 50/60Hz interference. Use Value: ±1.25LSB INL and 82dB S/(N+D) meet clinical accuracy thresholds while 28-SSOP footprint supports compact multi-channel designs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 14-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS8326IPW | 16-bit resolution, 500ksps, SPI-only interface, no internal reference - requires external 2.5V ref and level-shifting for ±5V analog input. | Better resolution and speed but higher power (12mW @ 500ksps) and no parallel option - suited for high-accuracy, non-battery applications with available board space. | Select when ENOB >14.5 bits is required and system can accommodate external reference and voltage translation. |
| MAX11607EEE+ | 14-bit, 250ksps, internal reference, SPI interface only, 16-pin QSOP - lacks bipolar support and parallel I/O; lower power (3.5mW). | Smaller package and lower quiescent current, but limited to unipolar 0–VREF input and no hardware SER/PAR toggle - fits compact, low-power, single-supply designs only. | Choose for space-constrained, unipolar-only systems where serial interface suffices and bipolar range is unnecessary. |
Compared with ADS8326IPW and MAX11607EEE+, the LTC1418AIG#TRPBF uniquely balances 14-bit precision, dual-supply flexibility, parallel/serial I/O choice, and industrial-temperature operation in a single 28-SSOP package - making it optimal for mixed-signal systems requiring design adaptability and field reliability.
Availability
LTC1418AIG#TRPBF is available at Aetrix Electronics and suitable for remote data acquisition, battery-operated medical devices, and isolated industrial signal conditioning requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC1418AIG#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 LTC1418AIG#TRPBF belongs to ADI's legacy Linear Technology precision data converter family, engineered for low-power, high-linearity applications demanding guaranteed monotonicity, robust AC performance, and flexible interface options in harsh operating environments.
FAQ
What is the operating temperature range for the LTC1418AIG#TRPBF?
The LTC1418AIG#TRPBF is rated for industrial operation from –40°C to +85°C. This range is confirmed in the "ORDER INFORMATION" table of the datasheet, where the "AIG" suffix explicitly denotes the industrial-grade temperature grade. All DC specifications-including INL (±1.25LSB), DNL (±1LSB), and no missing codes-are guaranteed across this full range.
Does the LTC1418AIG#TRPBF require an external reference, or does it have an internal one?
The LTC1418AIG#TRPBF includes a precision internal 2.500V reference (±20ppm/°C tempco, ±10LSB full-scale error) that can be used directly. It also supports external reference operation via the VREF pin, enabling higher accuracy or custom scaling. The internal reference eliminates BOM cost and layout complexity for most applications, while external reference capability preserves flexibility for metrology-grade designs.
How does the power shutdown functionality work on the LTC1418AIG#TRPBF?
The LTC1418AIG#TRPBF offers two distinct shutdown modes controlled by SHDN and CS pins: Nap mode (SHDN = low, CS = low) draws just 2µA and wakes in <500ns; Sleep mode (SHDN = low, CS = high) draws only 0.1µA but requires longer wake-up. Both modes retain register state and reference stability, allowing rapid resumption of conversion without reinitialization - essential for duty-cycled sensing systems.
Can the LTC1418AIG#TRPBF operate with a single 5V supply, and what input range does that support?
Yes, the LTC1418AIG#TRPBF operates from a single 5V supply (4.75V–5.25V) and supports a unipolar input range of 0V to 4.096V. This configuration uses AIN– grounded and requires no negative supply. The device maintains full 14-bit performance - including ±1.25LSB INL and 81.5dB S/(N+D) - under these conditions, making it ideal for single-rail embedded systems.
What package type and lead finish does the LTC1418AIG#TRPBF use?
The LTC1418AIG#TRPBF is supplied in a 28-lead plastic SSOP (G package) with lead-free (Pb-free) finish and tape-and-reel packaging (#TRPBF). The SSOP measures 5.6mm × 10.2mm with 0.635mm lead pitch. Its thermal resistance is θJA = 95°C/W, and it complies with RoHS Directive 2011/65/EU and JEDEC J-STD-020 moisture sensitivity level 3.
LTC1418AIG#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):
- 200k
- Number of Inputs:
- 1
- Input Type:
- Differential, Single Ended
- Data Interface:
- SPI
- 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, 5V
- Voltage - Supply, Digital:
- ±5V, 5V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 28-SSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
LTC1418AIG#TRPBF FAQ
1.How can I place an order for LTC1418AIG#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1418AIG#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 LTC1418AIG#TRPBF reliable?
The price and inventory of LTC1418AIG#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1418AIG#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC1418AIG#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1418AIG#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1418AIG#TRPBF?
LTC1418AIG#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1418AIG#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 LTC1418AIG#TRPBF?
For technical support, including LTC1418AIG#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1418AIG#TRPBF requirements.
6.How does Aetrix verify that LTC1418AIG#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC1418AIG#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 LTC1418AIG#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC1418AIG#TRPBF?
All LTC1418AIG#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1418AIG#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 LTC1418AIG#TRPBF part is unused and in its original packaging.
Return procedure for LTC1418AIG#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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