LTC1406CGN Analog Devices Integrated Circuit (Small Outline Packages) In Stock
Analog Devices LTC1406CGN is a low-power 8-bit pipelined ADC sampling at 20 MSPS with a parallel 8-bit output interface and a 5.25 V maximum analog input range in a 24-pin SOIC package. It delivers high-speed analog-to-digital conversion for video and communications applications. Available from stock with worldwide shipping.
- Manufacturer
- Analog Devices
- Package
- Small Outline Packages
- Pin Count
- 24
- Lifecycle
- OBSOLETE
- Datasheet
- LTC1406CGN Datasheet PDF
- Category
- Integrated Circuit
- Temp Range
- ?°C to 70.0°C
- RoHS
- Compliant
- Lead Time
- 3–7 business days
- Shipping
- DHL Express · Worldwide
Key Features
- 8-bit pipelined ADC with 20 MSPS sample rate enables real-time digitization of video and IF signals at low power consumption
- Parallel 8-bit output bus provides direct interface to DSPs and FPGAs without serial deserializer logic
- 5.25 V maximum analog input range with single 5 V supply simplifies signal chain design in video digitizer front ends
- Pipeline architecture delivers one conversion result per clock cycle after a 4-cycle latency, maximizing throughput in continuous-acquisition systems
Applications
The LTC1406CGN is used in video digitizer front ends, digital oscilloscopes, and radar IF sampling stages requiring 8-bit resolution at 20 MSPS with minimal power dissipation. Its parallel output format interfaces directly to FPGAs and DSP processors for real-time image processing, software-defined radio demodulation, and spectrum analysis applications. Medical ultrasound front-end designs also benefit from the LTC1406's combination of 20 MSPS throughput and low-power operation to digitize beamformed analog signals before digital signal processing.
Specifications
| YTEOL | 0 |
| Analog Input Voltage-Max | 5.25V |
| Converter Type | ADC, PIPELINED |
| JESD-30 Code | R-PDSO-G24 |
| Linearity Error-Max (EL) | 0.3906% |
| Number of Analog In Channels | 1 |
| Number of Bits | 8 |
| Number of Functions | 1 |
| Output Bit Code | BINARY |
| Output Format | PARALLEL, 8 BITS |
| Package Body Material | PLASTIC/EPOXY |
| Package Equivalence Code | SSOP24,.24 |
| Package Shape | RECTANGULAR |
| Package Style | SMALL OUTLINE, SHRINK PITCH |
| Qualification Status | Not Qualified |
| Sample Rate | 20MHz |
| Sample and Hold / Track and Hold | TRACK |
| Supply Current-Max | 45mA |
| Supply Voltage-Nom | 5V |
| Surface Mount | YES |
| Technology | CMOS |
| Terminal Finish | Tin/Lead (Sn/Pb) |
| Terminal Form | GULL WING |
| Terminal Pitch | 0.635mm |
| Terminal Position | DUAL |
| Package | Small Outline Packages |
Compliance & Regulatory
| RoHS Status | Compliant |
| Lead-Free | Yes (Pb-Free) |
| Moisture Sensitivity Level | MSL 1 |
| HTS Code | 8542.39.00.30 |
Alternate & Equivalent Parts
No known alternates. Submit an RFQ and our team can suggest alternatives.
Frequently Asked Questions
What is the sampling rate and resolution of the LTC1406CGN, and how does pipeline latency affect system timing?
The LTC1406CGN digitizes signals at 20 MSPS with 8-bit resolution using a pipelined architecture that introduces a 4-clock-cycle latency between the sampling instant and valid data output. In a continuous-acquisition system, this latency is constant and easily compensated by the receiving FPGA or DSP with a 4-sample shift register, so real-time throughput of 20 million samples per second is maintained.
What analog input voltage range does the LTC1406CGN accept, and what is the full-scale digital code mapping?
The LTC1406CGN accepts analog inputs from 0 V to a maximum of 5.25 V with a nominal full-scale range centered at 2.5 V, mapping to 8-bit binary output codes from 0 (0x00) to 255 (0xFF). A 1 LSB step corresponds to approximately 19.5 mV of input voltage, which must be considered when connecting sensors with output swings less than 5 V to avoid losing dynamic range.
How does the LTC1406CGN interface with an FPGA for a 20 MSPS digital oscilloscope front end?
The LTC1406CGN's parallel 8-bit output bus clocks data out synchronous with the ADC clock, allowing direct connection to an FPGA I/O bank configured as a synchronous input register. At 20 MSPS, the FPGA requires 8 input flip-flops sampled at 20 MHz, and a FIFO of at least 128 × 8-bit depth suffices to buffer burst acquisitions before the logic fabric processes the data stream.
What are the typical supply current and power dissipation of LTC1406CGN at full 20 MSPS operation?
The LTC1406CGN typically dissipates under 100 mW at 20 MSPS from a 5 V single supply, corresponding to approximately 20 mA supply current. This low-power characteristic makes it suitable for portable instruments and multi-channel digitizer boards where thermal management is constrained, and it contrasts with earlier 8-bit flash ADCs at 20 MSPS that consumed 300 mW or more.
When would a designer select LTC1406CGN over a 12-bit ADC for a software-defined radio receive path?
LTC1406CGN is preferred over 12-bit alternatives when the signal-of-interest occupies a bandwidth below 10 MHz and the noise floor is dominated by front-end amplifier noise rather than quantization noise, because 8-bit resolution provides approximately 50 dB SNR which exceeds the amplifier noise floor in many SDR configurations. The 20 MSPS rate allows direct IF undersampling of signals at 5 MHz to 10 MHz center frequencies, and the lower cost and power versus 12-bit 20 MSPS devices improves system economics in multi-channel receiver arrays.
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About Analog Devices
Analog Devices (ADI) is a global leader in high-performance analog, mixed-signal, and digital signal processing integrated circuits used in virtually all types of electronic equipment.
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