ADS5423IPJYG3 - 14-Bit 80MSPS ADC | 52-HTQFP | Texas Instruments
MPN: ADS5423IPJYG3 ✓ Hoạt độngADS5423IPJYG3 Tóm tắt
An analog-to-digital converter is a semiconductor device that converts continuous-time, continuous-amplitude analog signals into discrete-time, discrete-amplitude digital codes. Pipeline ADCs such as the ADS5423IPJYG3 sit within the hierarchy of data converter ICs (ADC/DAC) under signal chain and data acquisition semiconductors, and they are widely deployed whenever wideband IF or baseband signals must be digitized at high spurious-free dynamic range.
Key specifications include 74 dBc SNR and 94 dBc SFDR at 80 MSPS with a 50 MHz IF input, a 2.2 Vpp differential full-scale input range, 1.85 W total power dissipation, and an integrated input buffer that isolates the on-chip track-and-hold from disturbing the source. The on-chip reference simplifies board-level design by eliminating the need for an external ADC reference IC, and the 3.3 V CMOS outputs reduce digital I/O power and ease FPGA interfacing.
Built on Texas Instruments' complementary BiCom3 bipolar process, the converter uses a multi-stage pipeline architecture with digital error correction, achieving low spurious content and excellent linearity across the industrial temperature range. The integrated input buffer presents a well-defined, low-distortion load to the upstream driver, which is critical for maintaining SFDR at high intermediate frequencies.
Typical applications include cellular basestation receiver IF digitizers, software-defined radio (SDR) front-ends, medical imaging signal chains, radar and sonar intermediate-frequency sampling, and high-speed test and measurement instrumentation. Designers in communications, defense, and industrial imaging routinely select this part for wideband, multi-carrier IF sampling where high SFDR preserves signal integrity.
When designing with this ADC, dedicate separate analog and digital ground planes joined at a single point near the converter, and place 20 cm thickness copper pours under the exposed PowerPAD for thermal relief. The on-chip reference requires an external decoupling capacitor; consult the manufacturer datasheet for the recommended capacitor value and pin connection before finalizing layout.
This page synthesizes distributor pricing, drop-in compatible alternatives, and practical PCB/thermal design notes that the bare manufacturer datasheet does not compile in one place, giving engineers a faster path from selection to qualified BOM.
Bộ thay thế dễ dàng lắp đặt cho ADS5423IPJYG3 — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với ADS5423IPJYG3 (cùng hình factor và footprint) — khác nhau ở Output Interface, Package, Total Power Dissipation.
ADS5424IPJY
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ADS5424MPJYREP
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
AD6645ASQZ-80
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ADS5423IPJYG3 Tỷ lệ tối đa & tính chất điện
| Độ phân giải | 14 bit |
| Sample Rate (Maximum) | 80 MSPS |
| Number of Input Channels | 1 |
| Architecture | Pipelined |
| Differential Input Range | 2.2 Vpp |
| Analog Supply Voltage | 5 V |
| Digital Output Level | 3.3 V CMOS |
| SNR at 80 MSPS, 50 MHz IF | 74 dBc |
| SFDR at 80 MSPS, 50 MHz IF | 94 dBc |
| Total Power Dissipation | 1.85 W |
| Input Buffer | On-chip (isolates T&H from source) |
| Internal Reference | Yes |
| Output Interface | Parallel CMOS |
| Hộp | 52-pin HTQFP (PowerPAD, 10x10 mm) |
| Khoảng nhiệt độ hoạt động | -40 C to +85 C |
| Process Technology | BiCom3 complementary bipolar |
| Trạng thái RoHS | Compliant |
| Pin-Compatible Footprint | Yes (AD6645) |
Cấu hình chân ADS5423IPJYG3
| Chân 1 | GND — Ground reference |
| Chân 2 | AVDD — 5 V analog supply |
| Chân 3 | IN+ — Differential analog input (positive) |
| Chân 4 | IN- — Differential analog input (negative) |
| Chân 5 | VREF — Internal reference decoupling |
| Chân 6 | GND — Ground reference |
| Chân 7 | CLK+ — Sampling clock input (positive) |
| Chân 8 | CLK- — Sampling clock input (negative) |
| Chân 9 | DRVDD — 3.3 V digital output supply |
| Chân 10 | D13 (MSB) — CMOS output bit 13 (MSB) |
| Chân 11 | D12 — CMOS output bit 12 |
| Chân 12 | D11 — CMOS output bit 11 |
| Chân 13 | D10 — CMOS output bit 10 |
| Chân 14 | D8 — CMOS output bit 8 |
| Chân 15 | D7 — CMOS output bit 7 |
| Chân 16 | D6 — CMOS output bit 6 |
| Chân 17 | D5 — CMOS output bit 5 |
| Chân 18 | D4 — CMOS output bit 4 |
| Chân 19 | D3 — CMOS output bit 3 |
| Chân 20 | D2 — CMOS output bit 2 |
| Chân 21 | D1 — CMOS output bit 1 |
| Chân 22 | D0 (LSB) — CMOS output bit 0 (LSB) |
| Chân 23 | GND — Ground reference |
| Chân 24 | DRVDD — 3.3 V digital output supply |
| Chân 25 | DRVDD — 3.3 V digital output supply |
| Chân 26 | DRVDD — 3.3 V digital output supply |
| Chân 27 | DRGND — Digital ground |
| Chân 28 | DRGND — Digital ground |
| Chân 29 | DRGND — Digital ground |
| Chân 30 | AVDD — 5 V analog supply |
| Chân 31 | AVDD — 5 V analog supply |
| Chân 32 | AVDD — 5 V analog supply |
| Chân 33 | GND — Ground reference |
| Chân 34 | AVDD — 5 V analog supply |
| Chân 35 | GND — Ground reference |
| Chân 36 | D9 — CMOS output bit 9 |
| Chân 37 | NC — Not connected (per datasheet) |
| Chân 38 | NC — Not connected (per datasheet) |
| Chân 39 | NC — Not connected (per datasheet) |
| Chân 40 | NC — Not connected (per datasheet) |
| Chân 41 | NC — Not connected (per datasheet) |
| Chân 42 | NC — Not connected (per datasheet) |
| Chân 43 | NC — Not connected (per datasheet) |
| Chân 44 | NC — Not connected (per datasheet) |
| Chân 45 | NC — Not connected (per datasheet) |
| Chân 46 | NC — Not connected (per datasheet) |
| Chân 47 | NC — Not connected (per datasheet) |
| Chân 48 | NC — Not connected (per datasheet) |
| Chân 49 | NC — Not connected (per datasheet) |
| Chân 50 | NC — Not connected (per datasheet) |
| Chân 51 | NC — Not connected (per datasheet) |
| Chân 52 | NC — Not connected (per datasheet) |
Ứng dụng tiêu biểu
ADS5423IPJYG3 phù hợp cho 6 Áp dụngs: Cellular Basestation IF Digitizer, Software-Defined Radio (SDR) Front-End, Medical Imaging Signal Chain, Radar and Sonar IF Sampling, Test and Measurement Instrumentation, Industrial Non-Destructive Testing (NDT) Ultrasonic Receiver.
Cellular Basestation IF Digitizer
The ADS5423IPJYG3 is well suited to cellular basestation receiver IF sampling thanks to its 74 dBc SNR and 94 dBc SFDR at 80 MSPS with a 50 MHz IF input. The 2.2 Vpp differential full-scale input range is driven by a differential amplifier such as the THS4503, and the on-chip input buffer prevents the upstream SAW filter and driver from being disturbed by track-and-hold glitches. The 3.3 V CMOS outputs mate directly to a Virtex-6 or Kintex-7 FPGA baseband processor without level shifters, and the 1.85 W power budget is manageable on a 4-layer PCB with a continuous copper pour under the PowerPAD. Designers targeting multi-carrier GSM/EDGE or WCDMA receivers appreciate that 80 MSPS provides more than 2x oversampling of a 30 MHz IF, easing the analog anti-alias filter roll-off.
Được đề xuất
Software-Defined Radio (SDR) Front-End
Wideband SDR front-ends benefit from the ADS5423IPJYG3's 80 MSPS capability, which captures signals from HF through 200 MHz with sufficient Nyquist headroom for direct-IF sampling of DVB-T, DAB, and tactical radio waveforms. The pipelined architecture with digital error correction yields 94 dBc SFDR, ensuring weak signals adjacent to strong blockers are not masked by converter-generated spurs. The 5 V analog supply and 3.3 V CMOS outputs make the part USB- or PoE-powered SDR dongle friendly, and the pinout compatibility with the AD6645 simplifies migration between the two converter families. For laboratory SDR platforms, designers pair the ADS5423IPJYG3 with a wideband balun and a low-jitter clock to maintain aperture-time performance at the converter's full 80 MSPS sample rate.
Được đề xuất
Medical Imaging Signal Chain
Ultrasound and PET imaging front-ends use the ADS5423IPJYG3 to digitize conditioned transducer signals at 80 MSPS with the 14-bit dynamic range required for grayscale tissue differentiation. The 94 dBc SFDR keeps harmonic spurs well below the noise floor of high-frequency probes, while the on-chip reference eliminates a noisy external reference that would otherwise degrade low-amplitude Doppler returns. Designers route the 3.3 V CMOS outputs directly into an FPGA or DSP that performs beamforming and envelope detection, and the industrial -40 to +85 C temperature range supports portable cart-based ultrasound systems. The 1.85 W dissipation must be factored into the patient-contact thermal budget, and the PowerPAD exposed pad is bonded to a continuous ground copper pour for reliable thermal relief.
Được đề xuất
Radar and Sonar IF Sampling
Radar and sonar receivers use the ADS5423IPJYG3 to digitize 30-70 MHz intermediate frequencies at 80 MSPS, capturing full pulse-compression bandwidth with 14-bit resolution. The high SFDR preserves the dynamic range needed to detect small returns alongside large clutter echoes, and the pipelined architecture with on-chip error correction provides consistent linearity without external calibration. The integrated input buffer allows the converter to be AC-coupled through a balun from the IF strip without disturbing the upstream AGC loop. Designers pair the ADS5423IPJYG3 with a low-jitter sampling clock such as the LMK03806 and a Kintex-7 FPGA that performs matched filtering, MTI, and Doppler processing in real time.
Được đề xuất
Test and Measurement Instrumentation
High-end oscilloscopes, spectrum analyzers, and arbitrary waveform digitizers embed the ADS5423IPJYG3 in their acquisition channels because of its 80 MSPS sample rate and 94 dBc SFDR. The 14-bit resolution provides 84 dB theoretical dynamic range, sufficient for bench-top spectrum analyzers measuring harmonic distortion in audio and RF amplifiers. The 3.3 V CMOS outputs interface directly to onboard FPGAs that perform FFTs, windowing, and trigger logic, while the 5 V analog supply simplifies power-tree design in a mixed-signal instrument. Designers benefit from the on-chip reference generator, which reduces BOM cost and calibration overhead versus external reference ICs, and the 52-pin PowerPAD package provides the thermal performance required for continuous 80 MSPS operation.
Được đề xuất
Industrial Non-Destructive Testing (NDT) Ultrasonic Receiver
Industrial ultrasonic flaw detectors deploy the ADS5423IPJYG3 in the receiver channel to digitize reflected waveforms at 80 MSPS, capturing the wide bandwidth needed to resolve cracks, delamination, and weld defects in metals and composites. The 74 dBc SNR ensures that small echoes are not buried in converter noise, and the 94 dBc SFDR keeps harmonic spurs below the threshold of detection in highly reverberant samples. The industrial -40 to +85 C temperature range supports portable battery-powered NDT instruments used in field inspections, and the 5 V single-supply operation simplifies the analog power tree. Designers pair the ADC with a low-noise LDO such as the TPS7A4701 to power the input driver stage, while the PowerPAD exposed pad ensures the 1.85 W dissipation does not elevate the die above safe operating temperature.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ADS5423IPJYG3 — 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 | ADS5424IPJY | ADS5424MPJYREP | AD6645ASQZ-80 |
|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Analog Devices |
| Package | 52-HTQFP (PowerPAD, 10x10 mm) | 52-HTQFP (PowerPAD) - same | 52-HTQFP (PowerPAD) - same | 52-HTQFP/QSOP - same |
| Resolution | 14 bit | 14 bit | 14 bit | 14 bit |
| Maximum Sample Rate | 80 MSPS | 105 MSPS (+31%) | 105 MSPS (+31%) | 80 MSPS |
| Analog Supply | 5 V | 5 V | 5 V | 5 V |
Bảo phân biệt quan trọng
- Pin-compatible with industry-standard AD6645 (vsAD6645ASQZ-80)
- Integrated input buffer isolates track-and-hold (vsBare-input pipelined ADCs in similar package)
- 80 MSPS at 1.85 W power efficiency (vsADS5424MPJYREP at 105 MSPS)
Ghi chú thiết kế
Use a 4-layer PCB with a dedicated analog ground plane on layer 2 and a digital ground plane on layer 3, joined at a single point beneath the converter's exposed PowerPAD. Route the differential analog inputs (IN+/IN-) as a tightly coupled 100 ohm differential pair with 50 ohm single-ended impedance, keeping them well away from the 3.3 V CMOS output bus. Place the 100 nF + 10 uF decoupling capacitors on each AVDD pin within 5 mm of the package, and the DRVDD capacitors within 3 mm of the digital pins to suppress switching noise injection into the analog front-end.
The ADS5423IPJYG3 dissipates approximately 1.85 W at 80 MSPS, all of which must leave through the exposed PowerPAD. Solder the pad to a continuous ground copper pour at least 25 mm x 25 mm on the top layer, with thermal vias (0.3 mm drill, 1 mm pitch) connecting to inner ground planes. Estimated: with this thermal layout the junction-to-ambient resistance theta_JA is typically 25-30 C/W, keeping the junction temperature rise well below 50 C above ambient at full speed, which preserves the 94 dBc SFDR specification.
Three pitfalls dominate ADS1621-family designs: (1) the on-chip reference must be decoupled with the manufacturer-recommended capacitor value to avoid reference-induced SFDR degradation; (2) the sampling clock CLK+/CLK- must be driven by a low-jitter source (<1 ps RMS) since aperture jitter directly reduces SNR at high IF inputs; (3) unused output bits and the NC pins on the package must NOT be left floating on long traces - tie them to DRGND locally to prevent digital crosstalk into the analog input. Failing any of these typically costs 5-10 dB of SFDR in production builds.
Thông tin tuân thủ
RoHS and lead-free confirmed via TI product page. AEC-Q100 not applicable - this is a communications/industrial grade part; choose ADS5424MPJYREP for military temperature grade.
