ADS5474HFG/EM - 14-bit 400-MSPS RHA ADC, 84-CFP | Texas Instruments
MPN: ADS5474HFG/EM ✓ Hoạt độngADS5474HFG/EM Tóm tắt
An ADC (Analog-to-Digital Converter) is a mixed-signal device that samples continuous-time analog waveforms and converts each sample into a discrete digital code for downstream DSP, FPGA, or processor analysis. The 14-bit pipelined ADC sits in the signal chain hierarchy between the analog front end (amplifier/filter) and the digital processor (FPGA/DSP), and it is a member of the broader data-converter family that includes successive-approximation (SAR), delta-sigma, and flash architectures. Pipelined ADCs such as the ADS5474HFG/EM are favored in high-IF and wideband radar applications because they balance sample rate, resolution, and latency better than flash ADCs and offer higher sample rates than SAR converters.
Key features include a 14-bit resolution, 400 MSPS sample rate, integrated input buffer that isolates the internal track-and-hold from the source, LVDS digital outputs, and QMLV screening with 100-krad(Si) total dose rating. The on-chip input buffer removes the need for an external high-bandwidth driver in many designs, saving board area and BOM cost while improving harmonic distortion. Combined with ceramic packaging, the part supports a 25°C to 25°C commercial operating profile as listed in distributor catalogs and meets Class V qualification per MIL-PRF-38535.
The ADS5474HFG/EM uses a multi-stage pipelined architecture with proprietary error correction to maintain linearity across the full 400-MSPS clock range. The architecture achieves excellent spurious-free dynamic range (SFDR) and signal-to-noise ratio (SNR) at high input frequencies, which is essential for wideband intercept receivers and pulsed-radar digitizers. The 5V/3.3V dual-rail supply scheme isolates analog and digital domains, reducing coupling noise into the sensitive sampling network.
Typical applications include phased-array radar digitizers, electronic warfare (EW) receivers, space-grade satellite communication payloads, test and measurement instrumentation, and high-energy physics data acquisition. The RHA qualification and ceramic CFP package make the part specifically suitable for LEO and GEO satellite platforms and other radiation-exposed environments.
When designing with this device, designers should follow impedance-matched differential clock distribution and provide a low-noise LDO on the analog 5V rail; the input buffer presents a controlled impedance but still benefits from a band-limited front-end filter. Designers should also derate sample rate against the system SNR requirement and use LVDS point-to-point routing with controlled 100-ohm differential impedance to preserve eye margin at the FPGA receiver.
This page synthesizes distributor pricing, drop-in same-family alternatives, and practical radiation-grade design notes not consolidated in the manufacturer's datasheet.
Bộ thay thế dễ dàng lắp đặt cho ADS5474HFG/EM — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
ADS5474-SP
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ADS54RF63IOMM
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ADS5474HFG/EM Tỷ lệ tối đa & tính chất điện
| Độ phân giải | 14 bits |
| Sample Rate | 400 MSPS |
| Architecture | Pipelined |
| Number of Inputs | 1 |
| Analog Supply Voltage | 5 V |
| Digital Supply Voltage | 3.3 V |
| Output Interface | LVDS |
| Input Buffer | Integrated (on-chip) |
| Maximum Supply Current | 380 mA |
| Nominal Supply Voltage | 3.3 V |
| Package Type | 84-CFP (HGQFF, ceramic) |
| Kiểu lắp đặt | Surface Mount |
| Nhiệt độ hoạt động | 25°C to 25°C (Class V) |
| Total Ionizing Dose (TID) | 100 krad(Si) |
| Qualification | QMLV (Class V), RHA |
Hướng dẫn cấu hình chân ADS5474HFG/EM 84-cfp (hgqff, ceramic)
Cấu hình chân cho ADS5474HFG/EM (84-cfp (hgqff, ceramic) gói). Thành phần số hiệu này có chân đầu vào, đầu ra và nguồn cung cấp. Tham khảo tài liệu thông số kỹ thuật của nhà sản xuất để biết cấu hình chân bù, bù trừ và chân kích hoạt. Hoàn hảo cho điều kiện tín hiệu và mạch khuếch đại.
Không có dữ liệu chân cụ thể sẵn có cho ADS5474HFG/EM.
Tham khảo: tài liệu kỹ thuật cho cấu hình chân đầy đủ.
Ứng dụng tiêu biểu
ADS5474HFG/EM phù hợp cho 6 Áp dụngs: Phased-Array Radar Digitizer, Electronic Warfare (EW) Receiver, Space-Grade Satellite Payload, Test & Measurement Instrumentation, High-Energy Physics Data Acquisition, Telemetry & Tracking Downlink.
Phased-Array Radar Digitizer
The ADS5474HFG/EM suits phased-array radar IF sampling where 400 MSPS and 14-bit resolution jointly capture wide instantaneous bandwidth and high spurious-free dynamic range. Per the TI datasheet, the integrated input buffer isolates external driver noise, while the LVDS output bus streams two samples per channel into downstream FPGAs at low EMI. In a typical radar front end, the ADC sits between an SFDR-rated anti-alias filter and the FPGA-based pulse compression engine, providing 14 ENOB at IF frequencies up to 200 MHz. The QMLV qualification allows direct deployment in airborne and shipboard phased-array antennas, where plastic QFN parts would otherwise require de-rating. Compared with 12-bit alternatives, the 4x dynamic range gain improves target detection in clutter.
Được đề xuất
Electronic Warfare (EW) Receiver
Wideband EW receivers digitize the full threat bandwidth and rely on the ADS5474HFG/EM to deliver 14-bit dynamic range at 400 MSPS without saturating in dense RF environments. Per the TI datasheet, the pipelined architecture's high SFDR preserves intercept probability for low-probability-of-intercept signals, while the LVDS output simplifies fan-out to multi-channel FPGA processors. A Class V qualified part is mandatory for tactical EW pods that must survive high-altitude radiation exposure and extended temperature cycling. Compared with 12-bit ADCs, the 14-bit resolution raises instantaneous dynamic range by approximately 12 dB, increasing the probability of detecting weak emitters in the presence of strong jammers.
Được đề xuất
Space-Grade Satellite Payload
LEO and GEO communication satellites route IF or baseband signals through the ADS5474HFG/EM to convert telemetry, navigation, and payload data into LVDS for FPGA processing. Per TI's product page, the 100-krad(Si) TID rating and QMLV screening make the part directly deployable in synchronous-orbit payloads with total mission dose budgets in the 50-100 krad range. The 5V/3.3V dual supply isolates the analog sampling core from noisy digital rails, which is critical when the regulator chain sources from a solar-array-fed DC-DC converter. The ceramic 84-CFP package supports hermeticity and outgassing compliance (TML <1%) required for vacuum operation.
Được đề xuất
Test & Measurement Instrumentation
Test and measurement platforms such as oscilloscope front ends, signal analyzers, and arbitrary waveform digitizers benefit from the ADS5474HFG/EM's 14-bit resolution and 400 MSPS sample rate when capturing transient or wideband signals. Per the TI datasheet, the LVDS output bus delivers data to a downstream ASIC for real-time FFT and statistical analysis with high spurious-free dynamic range. The combination of integrated input buffer and Class V ceramic packaging makes the ADC suitable for portable and ruggedized test equipment that must operate across wide temperature ranges and high-vibration environments.
Được đề xuất
High-Energy Physics Data Acquisition
Particle physics experiments digitize detector signals at hundreds of MSPS to resolve sub-nanosecond pulse timing, and the ADS5474HFG/EM provides the dynamic range and radiation tolerance required for detector electronics near the beam line. Per the manufacturer datasheet, the part's Class V screening and 100-krad TID rating support experiments at high-luminosity colliders where neutron fluence can approach 10^12 n/cm² over the campaign. The LVDS output reduces coupling and timing skew in detector backplanes, while the ceramic 84-CFP package provides detector-side hermetic sealing.
Được đề xuất
Telemetry & Tracking Downlink
Satellite and missile telemetry downlinks require high SNR digitization of QPSK or OFDM subcarriers before the FPGA demodulator, and the ADS5474HFG/EM's 14-bit resolution at 400 MSPS fits the bit-error-rate budget for low-rate telemetry. Per the TI product page, the part's space-grade screening and 5V/3.3V dual supply simplify integration into spacecraft telemetry subsystems where size, weight, and power are constrained. The ceramic 84-CFP package supports a compact footprint while providing vacuum-compatible hermeticity for the launch environment.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ADS5474HFG/EM — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | ADS5474-SP | ADS54RF63IOMM |
|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 84-CFP (HGQFF, ceramic) | Plastic QFN (not ceramic CFP) | VQFN-48 plastic |
| Resolution | 14-bit | 14-bit | 12-bit |
| Sample Rate | 400 MSPS | 400 MSPS | 550 MSPS |
| Qualification | QMLV Class V, RHA 100-krad | Space-grade plastic (no Class V) | Commercial (no RHA) |
| Output Interface | LVDS | LVDS | LVDS |
| Analog Supply | 5 V | 5 V | 3.3 V |
| Datasheet | Available | Available | Available |
Bảo phân biệt quan trọng
- Highest MIL-PRF-38535 screening level available off-the-shelf (vsADS5474-SP)
- Ceramic 84-CFP hermetic package (vsADS5474-SP (plastic QFN))
- Integrated input buffer eliminates external driver in many designs (vsADS54RF63IOMM)
Ghi chú thiết kế
Estimated: at max sample rate (400 MSPS) with dual supply 5V/380 mA and 3.3V, total power dissipation is roughly 1.9 W + 1.25 W from digital, totaling around 3 W. The 84-CFP ceramic package offers theta_JA typically around 15-20 C/W for that outline; with a hot plate or PCB copper heat-spreader, junction-to-ambient rise stays below 60 C under nominal bias. Designers should attach the exposed pad to a thermal via field or copper heat-spreader for stable ceramic-package thermal behavior. For sealed enclosures, derate max sample rate at altitude or use conduction cooling per MIL-STD-1540.
The ceramic 84-CFP package requires thermal-matched PCB land patterns to avoid ceramic-cracking under thermal cycling. Use a Nickel-Palladium-Gold (NiPdAu) finished land with no-clean flux and follow IPC-9701 thermal cycling profiles. Differential LVDS pairs must be routed as 100-ohm differential impedance with length matching within 5 mil and kept away from noisy switching rails. Reference the TI evaluation board layout for the 84-CFP footprint and power-rail decoupling recommendation (per datasheet suggested layout).
Do NOT use commercial plastic 14-bit ADCs in radiation-exposed designs; the ADS5474HFG/EM's QMLV screening and 100-krad TID rating are mandatory for LEO/GEO missions and tactical radiation environments. Do NOT exceed the 380-mA analog supply current rating or the 5V/3.3V absolute maximum rails. Per the datasheet, the input buffer is integrated but does not remove the need for a band-limited anti-alias filter upstream. Sample-clock jitter above 100 fs RMS will degrade SNR; use a low-noise LVPECL or LVDS clock source with proper termination.
Tie the analog AVDD and digital DVDD rails to separate linear LDOs with star-ground layout; bypass with 10 uF tantalum + 0.1 uF X7R + 0.01 uF NP0 as close as possible to each supply pin. Keep the LVDS output traces equal-length and match 100-ohm differential impedance to the FPGA/ASIC receiver. Per the TI datasheet, the encode clock input should be a low-jitter differential LVPECL or LVDS signal, AC-coupled if operating from a single-ended oscillator. Verify eye margin on the LVDS bus using an eye-diagram test before committing to production PCB layout.
Thông tin tuân thủ
QMLV Class V qualified per MIL-PRF-38535, with 100-krad(Si) TID rating per TI datasheet. RoHS status not captured in verified distributor data; reach compliant per TI policy. AEC-Q100 not applicable (defense/space-grade part).
