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Analog Devices Inc. LTC1412IG#TRPBF
- Part No.:
- LTC1412IG#TRPBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
LTC1412IG#TRPBF.pdf
- Description:
- IC ADC 12BIT SAR 28SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,276
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Product details
Overview
LTC1412IG#TRPBF from Analog Devices (formerly Linear Technology) is a 12-bit, 3 Msps sampling analog-to-digital converter with true differential inputs, ±2.5 V bipolar input range, 72 dB S/(N + D) at 1.5 MHz, and no pipeline delay. It integrates a precision 2.5 V reference and high-dynamic-range sample-and-hold for high-fidelity signal digitization in telecom and spectrum analysis systems.
For engineers reviewing the LTC1412IG#TRPBF datasheet, LTC1412IG#TRPBF pinout, LTC1412IG#TRPBF application, or LTC1412IG#TRPBF equivalent, key selection criteria include its 40 MHz full-power bandwidth, ±0.35 LSB INL (typ), 28-pin SSOP package, differential CMRR >63 dB, and direct 3 V/5 V logic interface via OVDD.
Technical Context
The LTC1412IG#TRPBF employs a successive approximation register (SAR) architecture with an internal differential capacitive DAC and zeroing-switch-based sample-and-hold. Its acquisition time is 20–50 ns, aperture jitter is 1 psRMS, and it achieves 11 effective bits (ENOB) up to 1.5 MHz input frequency.
It supports both internal reference (2.500 V ±20 mV, ±15 ppm/°C tempco) and external reference operation. The dual-ground architecture separates AGND, DGND, and OGND to minimize digital switching noise coupling into analog conversion paths.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit with no missing codes - guarantees monotonicity and deterministic code transitions across full scale. |
| Sample Rate | 3 Msps maximum - enables real-time capture of signals up to 1.5 MHz (Nyquist) without aliasing in baseband applications. |
| S/(N + D) | 72 dB at 1.465 MHz - corresponds to ~11.7 ENOB, supporting high-fidelity digitization in RF and instrumentation front-ends. |
| INL / DNL | ±0.35 LSB / ±0.25 LSB (typ) - ensures accurate amplitude representation and minimal harmonic distortion in precision measurement. |
| Input Range | ±2.5 V differential or single-ended - matches optimal operating range of low-noise op amps, eliminating level-shifting circuitry. |
| Power Dissipation | 150 mW at ±5 V supplies - enables high-speed conversion while maintaining thermal stability in dense PCB layouts. |
| Full-Power BW | 40 MHz - allows undersampling of IF signals well above Nyquist, supporting software-defined radio and spectrum monitoring. |
Pinout & Package
Package: 28-lead plastic SSOP (0.209" wide), RoHS-compliant, moisture sensitivity level 3.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN+ (1), AIN– (2) | Differential analog input pair | Accepts ±2.5 V differential or single-ended (AIN– grounded); 63 dB CMRR rejects ground loops and common-mode noise. |
| VREF (3) | 2.5 V reference output | Internally trimmed bandgap reference; buffered via 2 kΩ series resistor for external overdrive or DAC adjustment. |
| REFCOMP (4) | Reference amplifier compensation | Must be bypassed to AGND with ≥10 µF ceramic capacitor to stabilize internal reference amplifier. |
| AGND (5), DGND (14, 19), OGND (22) | Separate ground returns | Isolates analog, digital logic, and output driver grounds to prevent noise coupling and maintain AC performance. |
| D11–D0 (6–13, 15–18) | 12-bit parallel three-state data outputs | MSB-first, two's complement format; OVDD pin sets output voltage swing (3 V or 5 V compatible). |
| CONVST (23), CS (24) | Conversion control inputs | Edge-triggered start (CONVST↓) with chip select gating; enables synchronous interfacing to FIFOs, DSPs, and microprocessors. |
| BUSY (25) | Conversion status indicator | Active-low open-drain signal indicates conversion in progress; used for handshaking without added latency. |
| AVDD/DVDD/VSS/OVDD (20, 26–28) | Supply rails | ±5 V analog/digital supplies (AVDD/DVDD/VSS); OVDD independently powers output drivers for mixed-voltage system interfacing. |
Key Features
| Feature | Design Value |
|---|---|
| No pipeline delay | Immediate availability of conversion result after BUSY deassertion - eliminates timing uncertainty in real-time control loops. |
| True differential input architecture | Rejects common-mode noise up to 40 MHz bandwidth - enables direct connection to transformer-coupled or balanced sensor outputs. |
| Independent output driver supply (OVDD) | Allows direct interface to 3 V or 5 V logic families without level shifters - reduces BOM count and layout complexity. |
| Internal 2.5 V reference with tempco ≤±15 ppm/°C | Stable baseline for precision measurements across –40°C to +85°C industrial temperature range. |
| Low aperture jitter (1 psRMS) | Minimizes sampling-time uncertainty - critical for high-SFDR performance in wideband receivers and spectrum analyzers. |
Applications
| Telecommunications Baseband Processing | Digital Signal Processing Front-End |
|---|---|
|
Use Scenario: Digitizing I/Q channels in cellular basestation transceivers operating at intermediate frequencies up to 1.5 MHz. IC Role / Device Role / Timing Role: High-speed, low-distortion ADC capturing baseband signals with 72 dB S/(N + D) and 82 dB SFDR for clean FFT analysis. Use Value: Enables accurate channel estimation and interference rejection without requiring external anti-alias filtering beyond 1.5 MHz. |
Use Scenario: Real-time acquisition of sensor outputs in FPGA-based motor control systems requiring closed-loop response <500 ns. IC Role / Device Role / Timing Role: Low-latency SAR ADC delivering immediate 12-bit results with no pipeline delay for deterministic timing in servo algorithms. Use Value: Eliminates need for FIFO buffering or latency compensation, simplifying timing closure in high-throughput DSP pipelines. |
| Multiplexed Data Acquisition Systems | Imaging System Digitization |
|
Use Scenario: High-channel-count industrial DAQ using multiplexed analog inputs with shared sample-and-hold control. IC Role / Device Role / Timing Role: Precision ADC with ±0.35 LSB INL ensuring consistent gain/offset matching across multiple input channels. Use Value: Reduces calibration overhead and improves system-level linearity when scanning arrays of RTDs or strain gauges. |
Use Scenario: Capturing line-scan CCD outputs in medical X-ray or document scanning equipment requiring 12-bit fidelity at 3 Msps. IC Role / Device Role / Timing Role: Low-noise ADC with 40 MHz full-power bandwidth preserving edge sharpness and contrast in high-resolution image data. Use Value: Maintains >11 ENOB across pixel clock rates up to 3 MHz, avoiding quantization-induced banding artifacts. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS8588SIPM (Texas Instruments) | 16-bit, 100 ksps, ±10 V input range, SPI interface; lower speed but higher resolution and wider input span. | Better suited for precision DC-coupled measurements (e.g., power quality monitoring), not high-frequency undersampling. | Select when resolution and DC accuracy outweigh speed; avoid for >1 MHz signal content due to 100 ksps limit. |
| AD7960BCPZ (Analog Devices) | 18-bit, 5 Msps, pseudo-differential input, LVDS output; higher resolution, faster, but requires external reference and differential drivers. | Targeted at high-end instrumentation and MRI front-ends where SNR >90 dB is mandatory. | Choose for ultimate dynamic range; expect increased layout complexity and BOM cost versus LTC1412IG#TRPBF's integrated reference and simplicity. |
Compared with ADS8588SIPM and AD7960BCPZ, the LTC1412IG#TRPBF delivers optimal balance of speed (3 Msps), integrated reference, differential input flexibility, and low-system-cost implementation - making it ideal for mid-tier telecom, test equipment, and real-time control where 12-bit fidelity at Nyquist is sufficient.
Availability
LTC1412IG#TRPBF is available at Aetrix Electronics and suitable for telecommunications infrastructure, digital signal processing front-ends, and multiplexed data acquisition systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for LTC1412IG#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 LTC1412IG#TRPBF belongs to ADI's legacy Linear Technology high-speed precision ADC product line, designed specifically for applications demanding excellent AC performance, low-latency conversion, and robust noise immunity in harsh electrical environments.
FAQ
What is the operating temperature range for the LTC1412IG#TRPBF?
The LTC1412IG#TRPBF is rated for industrial operation from –40°C to +85°C (I-grade). This is confirmed in the Absolute Maximum Ratings table and applies to all specified AC and DC performance parameters unless otherwise noted in the datasheet conditions.
Does the LTC1412IG#TRPBF require an external clock source?
No, the LTC1412IG#TRPBF contains an internal oscillator and does not require an external clock. Conversion timing is controlled solely by the CONVST and CS signals; the device achieves its full 3 Msps rate using its on-chip timing circuitry without external clock dependency.
Can the LTC1412IG#TRPBF operate with a single +5 V supply instead of ±5 V?
No - the LTC1412IG#TRPBF requires dual supplies: +5 V (AVDD/DVDD) and –5 V (VSS). The analog input range is centered at 0 V (±2.5 V), and the internal circuitry depends on the negative rail for proper biasing of the differential sample-and-hold and reference amplifier.
How is the reference configured on the LTC1412IG#TRPBF?
The LTC1412IG#TRPBF defaults to internal 2.5 V reference operation. VREF (Pin 3) provides the buffered reference output, and REFCOMP (Pin 4) must be bypassed to AGND with ≥10 µF capacitance. External references can overdrive VREF through its 2 kΩ series resistor, enabling adjustable input spans.
What package type is used for the LTC1412IG#TRPBF?
The LTC1412IG#TRPBF is housed in a 28-lead plastic SSOP (Shrink Small Outline Package) with 0.025" lead pitch and 0.209" body width. This package is explicitly listed in the "PACKAGE/ORDER INFORMATION" section and confirmed in the top-view pin diagram.
LTC1412IG#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:
- 12
- Sampling Rate (Per Second):
- 3M
- 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:
- -
LTC1412IG#TRPBF FAQ
1.How can I place an order for LTC1412IG#TRPBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1412IG#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 LTC1412IG#TRPBF reliable?
The price and inventory of LTC1412IG#TRPBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1412IG#TRPBF is usually 5 days.
3.What payment methods are accepted for LTC1412IG#TRPBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1412IG#TRPBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1412IG#TRPBF?
LTC1412IG#TRPBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1412IG#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 LTC1412IG#TRPBF?
For technical support, including LTC1412IG#TRPBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1412IG#TRPBF requirements.
6.How does Aetrix verify that LTC1412IG#TRPBF is sourced from the original manufacturer or authorized distributors?
All LTC1412IG#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 LTC1412IG#TRPBF meets industry standards.
7.What is the process for return or replacement of LTC1412IG#TRPBF?
All LTC1412IG#TRPBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1412IG#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 LTC1412IG#TRPBF part is unused and in its original packaging.
Return procedure for LTC1412IG#TRPBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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