ADS5423IPJYR - 14-Bit 80MSPS ADC, HTQFP-52 | Texas Instruments
MPN: ADS5423IPJYR ✓ Hoạt độngADS5423IPJYR Tóm tắt
A pipelined ADC is a type of high-speed data converter that processes analog input signals by sampling the waveform and distributing the conversion work across a cascade of low-resolution flash stages. The 14-bit pipelined ADC sits at the intersection of precision conversion and high-speed signal acquisition, offering a compromise between multi-bit sigma-delta accuracy (which favors slow speeds) and flash converter speed (which typically sacrifices resolution). The ADS5423 is part of the ADC category hierarchy: ADC -> data converter -> signal chain IC -> analog/mixed-signal semiconductor.
The architecture is built on TI's complementary bipolar BiCom3 process, which provides the high bandwidth necessary to resolve 14 bits at 80MSPS while keeping aperture jitter low. Internal references and a 2.2 Vpp differential input range simplify front-end design by removing the need for external high-precision reference voltage sources. The differential input is well suited to drive the on-chip Track-and-Hold (T/H) for clean IF sampling in communications receivers.
For communications test equipment, the 14-bit/80MSPS combination provides sufficient dynamic range for narrow-band IF digitization at 70 MHz or 140 MHz, while 3.3V CMOS output levels interface directly to FPGAs and DSPs without level shifters. The HTQFP-52 package with exposed pad provides thermal performance suitable for continuous full-speed operation. The ADS5423IPJY (tape and tray) and ADS5423IPJYR (tape and reel) share the same silicon and footprint.
Typical applications include cellular base-station IF digitizers, cable-headend downstream QAM receivers, medical imaging receivers, test and measurement digitizers, and radar/sonar intermediate-frequency acquisition. When designing the input network, use a 4:1 impedance-ratio balun to convert a single-ended 50Ω IF source to the 200Ω differential input the part expects, and decouple the DRVDD and AVDD pins with separate 0.1 µF ceramic capacitors placed as close as possible to the device.
Bộ thay thế dễ dàng lắp đặt cho ADS5423IPJYR — 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 ADS5423IPJYR (cùng hình factor và footprint) — khác nhau ở Package, Resolution.
ADS5423IPJY
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ADS5423IPGP
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ADS5423IPGPR
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ADS5422Y/1K5G4
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →AD6645ASTZ
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
AD6645ASVZ
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ADS5423IPJYR Tỷ lệ tối đa & tính chất điện
| Độ phân giải | 14 bits |
| Maximum Sample Rate | 80 MSPS |
| Number of Channels | 1 Input |
| Architecture | Pipelined |
| Differential Input Range | 2.2 Vpp |
| Input Type | Differential |
| Analog Supply Voltage (AVDD) | 5 V |
| Digital Output Supply (DRVDD) | 3.3 V CMOS compatible |
| SNR | 74 dBc at 80 MSPS, 50 MHz IF |
| SFDR | 94 dBc at 80 MSPS, 50 MHz |
| Total Power Dissipation | 1.85 W |
| Khoảng nhiệt độ hoạt động | -40°C to +85°C |
| Hộp | 52-pin HTQFP (10x10 mm) with heatsink pad |
| Kiểu lắp đặt | Surface Mount |
| Process Technology | TI BiCom3 complementary bipolar |
| Trạng thái RoHS | Compliant |
Cấu hình chân ADS5423IPJYR
| Chân 1 | NC — No connect |
| Chân 2 | AVDD — Analog 5 V supply |
| Chân 3 | AVDD — Analog 5 V supply |
| Chân 4 | AGND — Analog ground |
| Chân 5 | AIN — Positive differential analog input |
| Chân 6 | AINB — Negative differential analog input |
| Chân 7 | AGND — Analog ground |
| Chân 8 | AVDD — Analog 5 V supply |
| Chân 9 | VREF — Internal reference decoupling (place 0.1 µF cap to AGND) |
| Chân 10 | AGND — Analog ground |
| Chân 11 | AVDD — Analog 5 V supply |
| Chân 12 | BIAS — Analog bias decoupling |
| Chân 13 | AGND — Analog ground |
| Chân 14 | AVDD — Analog 5 V supply |
| Chân 15 | CLK — Input sample clock, positive |
| Chân 16 | CLKB — Input sample clock, negative (or tied with CLK for single-ended) |
| Chân 17 | AGND — Analog ground |
| Chân 18 | AVDD — Analog 5 V supply |
| Chân 19 | DRVDD — Digital output supply, 3.3 V |
| Chân 20 | DGND — Digital ground |
| Chân 21 | D0 — LVCMOS data output, bit 0 (LSB) |
| Chân 22 | D1 — LVCMOS data output, bit 1 |
| Chân 23 | D2 — LVCMOS data output, bit 2 |
| Chân 24 | D3 — LVCMOS data output, bit 3 |
| Chân 25 | D4 — LVCMOS data output, bit 4 |
| Chân 26 | D5 — LVCMOS data output, bit 5 |
| Chân 27 | D6 — LVCMOS data output, bit 6 |
| Chân 28 | D7 — LVCMOS data output, bit 7 |
| Chân 29 | D8 — LVCMOS data output, bit 8 |
| Chân 30 | D9 — LVCMOS data output, bit 9 |
| Chân 31 | D10 — LVCMOS data output, bit 10 |
| Chân 32 | D11 — LVCMOS data output, bit 11 |
| Chân 33 | D12 — LVCMOS data output, bit 12 |
| Chân 34 | D13 — LVCMOS data output, bit 13 (MSB) |
| Chân 35 | OTR — Out-of-range indicator (active high) |
| Chân 36 | DRVDD — Digital output supply, 3.3 V |
| Chân 37 | DGND — Digital ground |
| Chân 38 | NC — No connect |
| Chân 39 | NC — No connect |
| Chân 40 | NC — No connect |
| Chân 41 | NC — No connect |
| Chân 42 | AVDD — Analog 5 V supply |
| Chân 43 | AGND — Analog ground |
| Chân 44 | AVDD — Analog 5 V supply |
| Chân 45 | AGND — Analog ground |
| Chân 46 | AVDD — Analog 5 V supply |
| Chân 47 | AGND — Analog ground |
| Chân 48 | AVDD — Analog 5 V supply |
| Chân 49 | AGND — Analog ground |
| Chân 50 | AVDD — Analog 5 V supply |
| Chân 51 | AVDD — Analog 5 V supply |
| Chân 52 | NC — No connect |
Ứng dụng tiêu biểu
ADS5423IPJYR phù hợp cho 6 Áp dụngs: Cellular Base-Station IF Digitizer, Cable-Headend QAM Downstream Receiver, Test & Measurement Digitizing Oscilloscope Front-End, Radar and Sonar IF Acquisition, Medical Imaging Front-End, Software-Defined Radio Receiver Back-End.
Cellular Base-Station IF Digitizer
The ADS5423IPJYR's 80 MSPS sample rate and 74 dBc SNR at 50 MHz IF make it well suited for IF-digitizer cards in multi-carrier 2G/3G base-station receivers that drop IF signals to baseband from a 70/140 MHz IF chain. A 4:1 impedance balun drives the 2.2 Vpp differential input, while the 3.3V CMOS outputs feed an FPGA or DSP for channelization and demodulation. Compared with the legacy AD6645, the ADS5423IPJYR offers active long-term TI support and a stable supply chain for production volumes, while sharing the 52-pin HTQFP footprint so existing AD6645 layouts accept the TI drop-in without PCB changes.
Được đề xuất
Cable-Headend QAM Downstream Receiver
Wideband cable downstream QAM receivers benefit from the ADS5423IPJYR's combination of 14-bit resolution, 94 dBc SFDR at 50 MHz, and 80 MSPS throughput. The 1.85W power budget at full sample rate suits headend equipment where many channels are digitized in parallel. Designers place the ADC downstream of an RF SAW filter and balun, drive the differential input through a 4:1 transformer, and route the 3.3V CMOS outputs to an FPGA for demodulation. The HTQFP-52 exposed pad provides thermal performance for continuous 100% duty-cycle operation across the full -40 to +85°C industrial range.
Được đề xuất
Test & Measurement Digitizing Oscilloscope Front-End
Bench-top and modular test instruments use the ADS5423IPJYR for IF-sampling digitizer cards where 14-bit resolution at 80MSPS is sufficient for high-bandwidth waveform capture without the cost of 16-bit parts. The single-ended clock input interfaces cleanly with laboratory frequency synthesizers, while the 3.3V CMOS outputs stream directly to FPGA DDR capture buffers for post-processing, averaging, and FFT analysis. Designers take advantage of the pin-compatible AD6645 footprint to share analog front-end boards between TI and legacy ADI ADC designs, and the 1.85W power simplifies chassis cooling budgets.
Được đề xuất
Radar and Sonar IF Acquisition
Radar and sonar signal chains digitize narrowband IF outputs from a mixer stage at 25-50 MHz, and the ADS5423IPJYR's 80MSPS sample rate combined with 74 dBc SNR is well matched to those IF frequencies while rejecting out-of-band noise through matched filtering downstream. The differential architecture and on-chip Track-and-Hold reduce the need for external sample-and-hold circuits, simplifying the receive chain. A ground plane plus thermal vias under the HTQFP pad keeps the junction temperature well within limits for maritime and airborne environments operating from -40 to +85°C.
Được đề xuất
Medical Imaging Front-End
Ultrasound and MRI receiver cards downconvert RF front-end outputs to an intermediate frequency that the ADS5423IPJYR samples for beamforming and image reconstruction. Its 14-bit resolution and 94 dBc SFDR preserve the dynamic range needed for soft-tissue contrast, while the 2.2 Vpp differential input range pairs naturally with low-noise differential LNAs. The 52-pin HTQFP package is small enough to fit multiple ADC channels in a single receiver array, and the ADS5423IPJYR's pin-compatible footprint against the AD6645 enables dual-source supply strategy for medically regulated production.
Được đề xuất
Software-Defined Radio Receiver Back-End
Software-defined radio platforms leverage the ADS5423IPJYR as the final IF digitization stage before the FPGA digital down-converter. Sampling at 80 MSPS allows direct IF-to-baseband conversion from 25-40 MHz, avoiding an analog mixer stage and improving overall phase noise. Designers add a bandpass filter and balun in front of the input, place the ADS5423IPJYR on a continuous ground plane for EMI control, and route CMOS outputs to the FPGA. The 3.3V supply avoids level shifters and lowers total BOM cost compared to LVDS-based 16-bit alternatives, while 14-bit resolution is sufficient for narrow-band amateur and SIGINT receivers.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ADS5423IPJYR — 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 | ADS5423IPJY | ADS5423IPGP | ADS5423IPGPR | ADS5422Y/1K5G4 | AD6645ASTZ |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Analog Devices |
| Package | 52-pin HTQFP (10x10 mm) | 52-pin HTQFP (10x10 mm) - same | TQFP-52 - same terminal count | TQFP-52 - same terminal count | TQFP-52 - same terminal count | 52-pin LQFP (10x10 mm) - pin-compatible |
| Resolution | 14-bit | 14-bit | 14-bit | 14-bit | 14-bit | 14-bit |
| Sample Rate | 80 MSPS | 80 MSPS | 80 MSPS | 80 MSPS | 65 MSPS (-19%) | 80 MSPS |
| Analog Supply | 5 V | 5 V | 5 V | 5 V | 5 V | 5 V |
| Differential Input Range | 2.2 Vpp | 2.2 Vpp | 2.2 Vpp | 2.2 Vpp | 2.2 Vpp | 2.2 Vpp |
| SNR (typ @ 50 MHz) | 74 dBc | 74 dBc | 74 dBc | 74 dBc | 72 dBc | 75 dBc |
| SFDR (typ @ 50 MHz) | 94 dBc | 94 dBc | 94 dBc | 94 dBc | 90 dBc | 90 dBc |
| Power Dissipation | 1.85 W | 1.85 W | 1.85 W | 1.85 W | 1.55 W | 1.8 W |
| Pin-Compatible Drop-In | Yes (HTQFP-52 AD6645 footprint) | Yes (same silicon) | Yes (TQFP-52 same terminal count) | Yes (TQFP-52 same terminal count) | Footprint match, sample-rate differs | Yes (original pin reference) |
Bảo phân biệt quan trọng
- Pin-compatible drop-in for legacy AD6645 designs (vsAD6645ASTZ)
- Higher SFDR than the legacy AD6645 at 50 MHz IF (vsAD6645ASTZ)
- Highest sample rate within the TI ADS5422/ADS5423 family (vsADS5422Y/1K5G4)
- Identical silicon to ADS5423IPJYR tray-pack equivalent (vsADS5423IPJY)
Ghi chú thiết kế
Place input balun and series 50Ω termination resistors within 5 mm of AIN and AINB traces; keep the differential traces matched within 0.5 mm to preserve 50 MHz SNR performance. Route digital CMOS output groups (D0-D13 plus OTR) together and isolate them from the analog input pair with a guard trace stitched to AGND on both sides. The HTQFP-52 exposed pad must be soldered flush to a continuous ground plane with thermal vias on a 1 mm pitch to keep θJA within the datasheet envelope at 80MSPS continuous operation.
Estimated: at 5V AVDD and full-rate clocking, the ADS5423IPJYR consumes approximately 1.85 W total per the TI datasheet, of which roughly 80% flows through AVDD. Provide a 5V LDO (LM317 or TPS7A30) followed by a ferrite bead to each AVDD pin, then local 0.1 µF X7R ceramic bypass capacitors placed within 2 mm of every AVDD pin and a 10 µF bulk capacitor on the analog plane. DRVDD can be supplied from the same board-level 3.3V rail through an LC pi-section filter to decouple output switching noise from sensitive analog inputs.
Common pitfalls when using the ADS5423IPJYR include: (1) driving the input single-ended rather than through a 4:1 balun, which halves SNR; (2) failing to expose the HTQFP thermal pad, which reduces the θJA and can trigger thermal overload; (3) routing the input clock with poor matching, which causes SNR to degrade proportionally with clock jitter. Always ground all NC pins to AGND through the same ground plane layer to provide controlled reference behaviour, and verify the input common-mode voltage matches the datasheet midpoint of 2.4 V.
Thông tin tuân thủ
RoHS and REACH compliant per TI product page. Not AEC-Q100 qualified (industrial temp grade, -40 to +85°C). Conflict-minerals reporting per TI supply chain disclosures. Halogen-free status not specified in available data - use [DATA_NEEDED] reference.
