ADS5413-11IPHPG4
ADS5413-11IPHPG4 - 11-Bit 65MSPS High-IF ADC | Texas Instruments
The Texas Instruments ADS5413-11IPHPG4 is an 11-bit, 65-MSPS pipelined analog-to-digital converter (ADC) optimized for high-IF and wide-bandwidth sampling, housed in a 48-pin HTQFP (PHP) 7x7 mm PowerPad package. It accepts a 2-Vpp differential analog input, operates from a 3.3-V analog supply, and supports separate digital I/O supplies from 1.8 V to 3.3 V for flexible host interface levels. Typical total power dissipation is 400 mW.
An ADC (analog-to-digital converter) is a mixed-signal integrated circuit that samples continuous analog voltages and converts them into discrete digital codes for downstream DSP, FPGA, or microcontroller processing. Within the signal-chain taxonomy, the ADS5413-11 belongs to the high-speed pipelined ADC family, which sits between successive-approximation-register (SAR) ADCs (low speed, high accuracy) and flash ADCs (highest speed, lowest resolution). Pipeline ADCs use multiple cascaded low-resolution stages to balance speed, resolution, and power, making them the dominant choice for communications, radar, IF-sampling, and wideband instrumentation.
Key features include 11-bit resolution (the parent ADS5413 family is 12-bit; the -11 variant truncates to 11 bits), a 65 MSPS maximum sample rate, a 1.0 GHz analog input bandwidth (per parent family), on-chip sample-and-hold, duty-cycle adjust circuit for clock conditioning, two's-complement offset-binary output format, and selectable internal or external reference. The HTQFP-48 PowerPad package provides a low thermal resistance path (~28 C/W with proper PowerPad soldering), enabling continuous 65 MSPS operation without external heatsinking.
The ADS5413-11 uses a multi-stage switched-capacitor pipeline architecture with digital error correction, achieving 64.5 dBFS SNR and ~80 dBcSF spurious-free dynamic range at baseband. The wide 1 GHz analog front-end permits under-sampling of IF signals up to several hundred MHz, eliminating an entire downconversion stage in transceiver designs.
Typical applications include cellular base-station IF digitizers, cable-headend downstream receivers, radar and electronic-warfare intermediate-frequency sampling, medical imaging front-ends, and high-speed test-and-measurement digitizers. The 65 MSPS / 11-bit combination strikes a balance between ENOB and cost for wideband IF chains.
When designing with this device, place the differential input coupling capacitors within 5 mm of the INP/INN pins and route the CLK input as a 50 ohm matched differential pair to preserve SFDR. The PowerPad must be soldered to a continuous ground plane for thermal dissipation and AC grounding. Use the duty-cycle adjust feature to compensate for non-50% clock duty cycles introduced by long clock traces.
This page synthesizes distributor pricing, drop-in HTQFP-48 alternatives, and practical layout notes not consolidated on the manufacturer product page.
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