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Analog Devices Inc. LTC1415IG#PBF
- Part No.:
- LTC1415IG#PBF
- Manufacturer:
- Analog Devices Inc.
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 28-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
LTC1415IG#PBF.pdf
- Description:
- IC ADC 12BIT SAR 28SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,612
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Product details
Overview
LTC1415IG#PBF from Analog Devices (formerly Linear Technology) is a 12-bit, 1.25 Msps successive-approximation ADC with true differential analog inputs, ±0.35 LSB INL, 72 dB S/(N+D) at 100 kHz, and 55 mW power dissipation on single 5 V supply. It serves as a high-speed data acquisition front-end in imaging systems and DSP interfaces, delivering rail-to-rail input acquisition up to 18 MHz bandwidth.
For engineers reviewing the LTC1415IG#PBF datasheet, LTC1415IG#PBF pinout, LTC1415IG#PBF application, or LTC1415IG#PBF equivalent, key selection criteria include differential input common-mode rejection (60 dB), internal 2.5 V reference with 4.096 V full-scale range, Nap/Sleep shutdown modes, and 12-bit parallel µP-compatible interface with BUSY/CONVST timing control.
Technical Context
The LTC1415IG#PBF employs a capacitive DAC-based successive approximation architecture with integrated sample-and-hold, internal clock, and precision bandgap reference. Its differential input stage acquires signals with 150 ns acquisition time and 700 ns conversion time, enabling full 1.25 Msps throughput without pipeline delay.
It supports both internal reference operation (2.500 V output at VREF, amplified to 4.096 V internally) and external reference configurations. The separate OVDD pin allows direct interfacing to 3 V logic, while AGND/DGND/OGND separation maintains analog integrity under mixed-signal conditions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit with no missing codes - guarantees monotonic transfer function for precise linear measurement. |
| Sample Rate | 1.25 Msps maximum - enables real-time capture of signals up to 625 kHz Nyquist frequency. |
| INL / DNL | ±0.35 LSB / ±0.25 LSB - ensures <0.1% end-point linearity error for high-fidelity imaging and instrumentation. |
| S/(N+D) | 72 dB at 100 kHz - corresponds to ~11.7 effective bits, supporting high-dynamic-range signal digitization. |
| Power Dissipation | 55 mW typical at full rate; 7.5 mW in Nap mode; 0.01 mW in Sleep mode - enables low-power portable and battery-backed systems. |
| Input Bandwidth | 18 MHz full-power bandwidth - permits undersampling of RF and IF signals beyond baseband. |
| Common-Mode Rejection | 60 dB DC to 1 MHz - suppresses ground loops and noise in differential sensor interfaces. |
Pinout & Package
Package: 28-pin plastic SSOP (Small Outline Package), JEDEC MS-012AC, body size 10.2 mm × 5.3 mm, 0.65 mm pitch. Thermal resistance θJA = 130°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| +AIN (1) | Differential analog input positive | Accepts 0–4.096 V input; sampled simultaneously with –AIN for true differential acquisition. |
| –AIN (2) | Differential analog input negative | Enables common-mode noise rejection; voltage must stay within AVDD/AGND rails. |
| VREF (3) | Internal reference output | 2.500 V ±20 mV buffered output; drives internal 4.096 V reference amplifier via 2 kΩ series resistor. |
| REFCOMP (4) | Reference amplifier compensation | Requires ≥10 µF bypass to AGND (tantalum + 0.1 µF ceramic) for stability and low-noise operation. |
| AGND (5) | Analog ground | Must be star-connected to system analog ground; isolated from DGND except at single point. |
| D11–D0 (6–13, 15–18) | 12-bit parallel data outputs | Three-state, MSB-first; driven by OVDD (3 V or 5 V) for level compatibility with host logic. |
| BUSY (25) | Conversion status indicator | Active-low open-drain signal; rising edge marks valid data ready for latching. |
| CONVST (23) | Conversion start trigger | Falling-edge sensitive; initiates SAR cycle; minimum pulse width 50 ns. |
| SHDN (21) | Shutdown enable | Low-active input controlling Nap/Sleep entry; requires NAP/SLP pin state to select mode. |
| NAP/SLP (20) | Shutdown mode selector | High = Nap mode (2.3 mA, fast wake-up); Low = Sleep mode (1 µA, 10 ms wake-up). |
Key Features
| Feature | Design Value |
|---|---|
| True differential input architecture | Enables simultaneous sampling of +AIN and –AIN with 60 dB CMRR, eliminating need for external instrumentation amps in balanced sensor interfaces. |
| Integrated 2.5 V temperature-compensated reference | Factory-trimmed ±0.8% initial accuracy (2.48–2.52 V), ±15 ppm/°C tempco, and 2 kΩ output impedance - simplifies system BOM and improves long-term gain stability. |
| Flexible power management | Three operational states (active/Nap/Sleep) with sub-µA sleep current - extends battery life in portable DAQ and IoT edge nodes. |
| µP-compatible parallel interface | No pipeline delay; BUSY and CONVST provide deterministic timing for FIFO, DSP, or microcontroller handshaking without added glue logic. |
| Separate OVDD supply pin | Allows direct connection to 3 V logic families (e.g., ARM Cortex-M, FPGA I/O banks) while maintaining 5 V analog core - eliminates level-shifter components. |
Applications
| Imaging Systems | Digital Signal Processing |
|---|---|
|
Use Scenario: Digitizing CCD or CMOS sensor outputs in medical ultrasound or industrial machine vision cameras. IC Role / Device Role / Timing Role: Front-end ADC capturing analog video lines at >1 Msps with minimal latency and distortion. Use Value: ±0.25 LSB DNL preserves pixel-level grayscale fidelity; 72 dB S/(N+D) ensures clean image reconstruction at 100 kHz bandwidth. |
Use Scenario: Real-time sampling of filtered audio or communication signals in baseband processing chains. IC Role / Device Role / Timing Role: High-throughput analog input stage feeding TI C6000 or Analog Devices SHARC DSPs via parallel bus. Use Value: 1.25 Msps rate supports oversampling for noise shaping; differential inputs reject EMI in noisy PCB environments. |
| Multiplexed Data Acquisition | Telecommunications Monitoring |
|
Use Scenario: Channelized voltage/current monitoring across 16+ sensor channels using analog multiplexers. IC Role / Device Role / Timing Role: Shared ADC resource with fast acquisition (<150 ns) and low crosstalk between mux channels. Use Value: 18 MHz input bandwidth allows clean settling even with high-Z multiplexer outputs; Nap mode reduces average power per channel. |
Use Scenario: Capturing RF front-end I/Q signals or power amplifier feedback in cellular base station maintenance units. IC Role / Device Role / Timing Role: Medium-speed digitizer for spectrum analysis and distortion measurement below 600 kHz. Use Value: –80 dB THD at 100 kHz and –72 dB at 600 kHz enables accurate harmonic analysis; 4.096 V full-scale matches standard DAC output ranges. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar high-speed 12-bit ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| AD9220ARZ | 12-bit, 10 Msps, 3.3 V supply, no internal reference, LVDS option available | Higher speed but requires external reference and level-shifting; less suited for 5 V µP interfaces | Choose AD9220ARZ when >2 Msps throughput or JESD204B/LVDS interface is required. |
| MAX1186ETL+ | 12-bit, 1.5 Msps, 3 V supply only, internal 2.048 V reference, 20-pin TQFN | Lower power (25 mW), smaller package, but incompatible 3 V-only IO and reduced full-scale range | Choose MAX1186ETL+ for space-constrained 3 V systems where 2.048 V input range suffices. |
Compared with LTC1415IG#PBF, AD9220ARZ offers higher sample rate but demands external support circuitry and lacks integrated 5 V logic compatibility, whereas MAX1186ETL+ reduces footprint and power at the cost of supply flexibility and full-scale voltage range.
Availability
LTC1415IG#PBF is available at Aetrix Electronics and suitable for high-speed data acquisition, imaging systems, and digital signal processing applications requiring stable component supply, long-lifecycle support, and guaranteed traceable sourcing.
Supply support for LTC1415IG#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.
The LTC1415IG#PBF belongs to ADI's legacy Linear Technology precision data converter family, designed specifically for demanding medium-speed, high-linearity applications where low power, differential input robustness, and µP interface simplicity are critical.
FAQ
What is the operating temperature range for the LTC1415IG#PBF?
The LTC1415IG#PBF is specified for industrial temperature operation from –40°C to +85°C, as indicated by the "I" grade suffix in the part number. This makes it suitable for deployment in harsh environments such as factory automation, outdoor telecom equipment, and motor control systems where ambient temperatures exceed commercial-grade limits.
Does the LTC1415IG#PBF require an external reference, or can it operate with its internal reference?
The LTC1415IG#PBF can operate with its internal 2.500 V reference (available at Pin 3, VREF) which is amplified internally to produce a precise 4.096 V full-scale range. External reference operation is optional and supported via the REF COMP pin; however, the internal reference is fully functional and calibrated across temperature, eliminating the need for external components in most applications.
How does the Nap and Sleep shutdown functionality work on the LTC1415IG#PBF?
The LTC1415IG#PBF implements two low-power states: Nap mode (1.5–2.3 mA) activates when SHDN = LOW and NAP/SLP = HIGH; Sleep mode (1.0 µA) activates when both SHDN = LOW and NAP/SLP = LOW. Wake-up times are 200 ns from Nap and 10 ms from Sleep, allowing rapid resumption of sampling after idle periods - ideal for duty-cycled sensor systems.
Can the LTC1415IG#PBF interface directly with 3 V microcontrollers or FPGAs?
Yes - the LTC1415IG#PBF features a dedicated OVDD pin (Pin 26) that powers its 12-bit parallel output drivers. By tying OVDD to 3 V, the D11–D0 outputs swing rail-to-rail between 0 V and 3 V, enabling direct connection to 3 V logic without level shifters. DVDD and AVDD remain at 5 V to maintain analog performance.
What is the significance of the "IG" suffix in LTC1415IG#PBF?
The "IG" suffix denotes the industrial-grade temperature range (–40°C to +85°C) and SSOP package (G = 28-pin plastic SSOP). The "#PBF" indicates lead-free (Pb-free) and RoHS-compliant packaging. This distinguishes LTC1415IG#PBF from the commercial-grade LTC1415CG#PBF (0°C to +70°C) and SO-package variants like LTC1415ISW#PBF.
LTC1415IG#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:
- 12
- Sampling Rate (Per Second):
- 1.25M
- 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:
- -
LTC1415IG#PBF FAQ
1.How can I place an order for LTC1415IG#PBF through Aetrix?
Please submit a Request for Quotation (RFQ) for LTC1415IG#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 LTC1415IG#PBF reliable?
The price and inventory of LTC1415IG#PBF are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for LTC1415IG#PBF is usually 5 days.
3.What payment methods are accepted for LTC1415IG#PBF?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for LTC1415IG#PBF transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for LTC1415IG#PBF?
LTC1415IG#PBF orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your LTC1415IG#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 LTC1415IG#PBF?
For technical support, including LTC1415IG#PBF datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your LTC1415IG#PBF requirements.
6.How does Aetrix verify that LTC1415IG#PBF is sourced from the original manufacturer or authorized distributors?
All LTC1415IG#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 LTC1415IG#PBF meets industry standards.
7.What is the process for return or replacement of LTC1415IG#PBF?
All LTC1415IG#PBF units undergo pre-shipment inspection (PSI). If there is an issue with LTC1415IG#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 LTC1415IG#PBF part is unused and in its original packaging.
Return procedure for LTC1415IG#PBF:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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