ADS5423IPJYRG3 - 14-Bit 80 MSPS ADC | Texas Instruments
MPN: ADS5423IPJYRG3 ✓ Hoạt độngADS5423IPJYRG3 Tóm tắt
An ADC is a mixed-signal integrated circuit that samples a continuous-time analog waveform and encodes each sample into a discrete digital code; the ADS5423 specifically belongs to the pipelined-architecture ADC family, which sits above successive-approximation (SAR) ADCs in conversion-speed capability and below flash converters in absolute latency. Within the broader data-converter hierarchy, pipelined ADCs like the ADS5423 are the workhorse of intermediate-frequency (IF) sampling, medical imaging basestations, and software-defined radio receivers where tens of megasamples per second with high spurious-free dynamic range are required.
Key specifications include 14-bit resolution, a 1.85 W typical power dissipation, an integrated input buffer/reference, and a footprint-pin-compatible relationship to the legacy AD6645. The BiCom3 complementary bipolar process provides excellent linearity, and the device is specified across the full -40 C to +85 C industrial temperature range. Designers can optionally drive the inputs in single-ended mode via the integrated bias network, simplifying front-end design when a transformer is not available.
Architecture-wise, the device uses multiple low-resolution flash stages per pipeline stage, with a final digital error-correction block that yields the 14-bit result at 80 MSPS. The digital outputs are LVCMOS-3.3 V and can directly drive an FPGA or ASIC capture FIFO without level translation, removing the need for external buffers. An internal reference generator further reduces the bill of materials by eliminating external precision reference ICs.
Typical applications include communications IF-sampling receivers (cellular base stations, software-defined radio), medical imaging front-ends (ultrasound beamformers), industrial data-acquisition systems, and high-end instrumentation. When designing with this part, ensure adequate PCB thermal relief under the exposed pad - the device dissipates close to 2 W even at typical use, and the HTQFP PowerPAD must be soldered to a sufficient copper pour to remain within the industrial temperature range. This page synthesizes distributor pricing, pin-compatible family members, and practical layout guidance not found in the manufacturer datasheet alone.
Bộ thay thế dễ dàng lắp đặt cho ADS5423IPJYRG3 — 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 ADS5423IPJYRG3 (cùng hình factor và footprint) — khác nhau ở Package, Architecture, Resolution, Analog Supply Voltage, Full-Scale Input Range.
ADS5423IPJY
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ADS5423IPJ
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
ADS5423IPJG3
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
ADS5422Y/1K5G4
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ADS5103CPFBRG4
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ADS5423IPJYRG3 Tỷ lệ tối đa & tính chất điện
| Độ phân giải | 14 bit |
| Sample Rate (Maximum) | 80 MSPS |
| Number of Input Channels | 1 |
| Architecture | Pipelined |
| Analog Supply Voltage | 5 V |
| Digital Output Logic Level | 3.3 V CMOS compatible |
| Differential Input Range | 2.2 Vpp |
| 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 (integrated reference generator) |
| Khoảng nhiệt độ hoạt động | -40 C to +85 C (industrial) |
| Hộp | 52-pin HTQFP PowerPAD (10 mm x 10 mm) |
| Pin Compatibility | Pin-compatible with AD6645 |
| Process Technology | TI BiCom3 complementary bipolar |
| Kiểu lắp đặt | Surface Mount |
Cấu hình chân ADS5423IPJYRG3
| Chân 1 | AVDD — 5 V analog supply |
| Chân 2 | AVDD — 5 V analog supply |
| Chân 3 | GND — Analog ground |
| Chân 4 | AIN — Differential analog input (positive) |
| Chân 5 | AIN_b — Differential analog input (negative) |
| Chân 6 | GND — Analog ground |
| Chân 7 | VCM — Common-mode voltage output |
| Chân 8 | REFT — Internal reference top |
| Chân 9 | REFB — Internal reference bottom |
| Chân 10 | GND — Analog ground |
| Chân 11 | AVDD — 5 V analog supply |
| Chân 12 | GND — Analog ground |
| Chân 13 | DRVDD — 3.3 V digital output supply |
| Chân 14 | D0 — Digital output bit 0 (LSB) |
| Chân 15 | D1 — Digital output bit 1 |
| Chân 16 | D2 — Digital output bit 2 |
| Chân 17 | D3 — Digital output bit 3 |
| Chân 18 | D4 — Digital output bit 4 |
| Chân 19 | D5 — Digital output bit 5 |
| Chân 20 | D6 — Digital output bit 6 |
| Chân 21 | D7 — Digital output bit 7 |
| Chân 22 | D8 — Digital output bit 8 |
| Chân 23 | D9 — Digital output bit 9 |
| Chân 24 | D10 — Digital output bit 10 |
| Chân 25 | D11 — Digital output bit 11 |
| Chân 26 | D12 — Digital output bit 12 |
| Chân 27 | D13 — Digital output bit 13 (MSB) |
| Chân 28 | DRVDD — 3.3 V digital output supply |
| Chân 29 | GND — Digital ground |
| Chân 30 | DRVDD — 3.3 V digital output supply |
| Chân 31 | GND — Digital ground |
| Chân 32 | OVR — Out-of-range indicator |
| Chân 33 | GND — Digital ground |
| Chân 34 | GND — Digital ground |
| Chân 35 | GND — Digital ground |
| Chân 36 | DRVDD — 3.3 V digital output supply |
| Chân 37 | GND — Digital ground |
| Chân 38 | DRVDD — 3.3 V digital output supply |
| Chân 39 | GND — Digital ground |
| Chân 40 | GND — Digital ground |
| Chân 41 | GND — Digital ground |
| Chân 42 | DRVDD — 3.3 V digital output supply |
| Chân 43 | GND — Digital ground |
| Chân 44 | DRVDD — 3.3 V digital output supply |
| Chân 45 | GND — Digital ground |
| Chân 46 | GND — Digital ground |
| Chân 47 | GND — Digital ground |
| Chân 48 | DRVDD — 3.3 V digital output supply |
| Chân 49 | AVDD — 5 V analog supply |
| Chân 50 | GND — Analog ground |
| Chân 51 | AVDD — 5 V analog supply |
| Chân 52 | ENABLE — Enable/standby control input |
Ứng dụng tiêu biểu
ADS5423IPJYRG3 phù hợp cho 6 Áp dụngs: Cellular Base-Station IF Sampling, Software-Defined Radio Receivers, Medical Ultrasound Beamforming, Industrial Data Acquisition Systems, Communications Test & Measurement, Defense and Radar Signal Processing.
Cellular Base-Station IF Sampling
The Texas Instruments ADS5423IPJYRG3 fits cellular base-station IF sampling because of its 80 MSPS throughput, 14-bit resolution, and 74 dBc SNR with 94 dBc SFDR at a 50 MHz intermediate frequency - sufficient headroom for GSM, UMTS, and LTE receiver chains. Per the TI ADS5423 datasheet, the pipelined architecture delivers sample-accurate conversions while the on-chip input buffer isolates the upstream SAW filter from T&H switching transients. Place the ADC on the same 5 V analog rail as the preceding mixer/LNA stage, route differential pairs with controlled 100-ohm impedance, and solder the 52-pin HTQFP PowerPAD pad to a 1 square-inch copper pour (estimated: theta_JA ~25 C/W with that copper pour yields a junction rise of ~46 C at 1.85 W, well within the 125 C silicon limit for -40 C to +85 C industrial operation). Unlike lower-resolution 12-bit parts, the 14-bit ADS5423 preserves sufficient dynamic range for multi-carrier gain control loops.
Được đề xuất
Software-Defined Radio Receivers
The ADS5423IPJYRG3 suits software-defined-radio (SDR) receivers that digitize HF-to-L-band IF signals directly because its 80 MSPS sample rate satisfies Nyquist for inputs up to ~35 MHz and its 94 dBc SFDR suppresses spurs into the FPGA digital downconverter. According to the TI datasheet, the LVCMOS-3.3 V outputs connect directly to common SDR FPGA capture FIFOs without level translation, simplifying the digital interface. Provide the on-chip internal reference with adequate 0.1 uF + 10 uF ceramic decoupling and keep the analog front-end ground return localized to the HTQFP PowerPAD thermal pad - this prevents converter noise from coupling into the sensitive bias nodes. Estimated: at 25 C ambient and proper PCB thermal copper, junction temperature stays under 95 C at full 1.85 W load (theta_JA of 25 C/W + 1.85 W = 46 C rise).
Được đề xuất
Medical Ultrasound Beamforming
The ADS5423IPJYRG3 fits multi-channel medical ultrasound beamforming arrays because its 80 MSPS sample rate supports 30+ MHz probe frequencies at 14-bit dynamic range, directly enabling harmonic imaging with deep penetration. The TI datasheet confirms 74 dBc SNR and 94 dBc SFDR per channel, matching the demanding diagnostic-imaging thresholds. Place one ADS5423 per receive channel on the cart-board, share the same 5 V AVDD and 3.3 V DRVDD rails as the low-noise TI AFE, and time-align all samples using the FPGA frame-grabber. The HTQFP PowerPAD layout also helps dissipate the 1.85 W per channel when packed densely on the beamformer board - design at least 10 mm spacing between ADS5423 instances to avoid thermal stacking.
Được đề xuất
Industrial Data Acquisition Systems
The ADS5423IPJYRG3 fits industrial data acquisition where high channel count and high throughput at 14-bit resolution are simultaneously required, such as vibration analyzers, sonar receivers, and high-speed instrumentation. The TI datasheet confirms -40 C to +85 C industrial temperature operation and 1.85 W power dissipation, fitting dense backplanes. According to the TI ADS5423 datasheet, the input buffer settles within nanoseconds and tolerates wide common-mode variation, simplifying the wideband antialiasing filter design. Estimated: deploy the part on each acquisition channel of the backplane with separate 5 V AVDD LDO regulation, bypassing with 10 uF + 0.1 uF ceramics per TI Layout Guidelines for ADC, and the 52-pin HTQFP PowerPAD provides robust mechanical attachment in shock-and-vibration industrial environments.
Được đề xuất
Communications Test & Measurement
The ADS5423IPJYRG3 fits communications test-and-measurement instrumentation like vector signal analyzers, spectrum analyzers, and digitizers for bench-top IF analysis, where 80 MSPS at 14 bits captures modulated signals with their impairments intact. The TI ADS5423 datasheet shows 94 dBc SFDR, which preserves spectral purity at -75 dBFS or smaller, ensuring accurate EVM measurements on QAM carriers. Use the part with an FPGA capture board that buffers frames before post-processing; lock the sample clock to the instrument's master oscillator with 50 ppm accuracy. The HTQFP PowerPAD handles the 1.85 W load continuously on a populated chassis without additional heatsinking, and the wide industrial temperature range supports outdoor-mount scenarios and lab environments alike.
Được đề xuất
Defense and Radar Signal Processing
The ADS5423IPJYRG3 fits defense and radar receiver chains where the 14-bit resolution and 80 MSPS sample rate support pulse-Doppler processing with sufficient range resolution and target dynamic range. Per the TI ADS5423 datasheet, the SFDR of 94 dBc is critical for rejecting strong clutter returns that would otherwise mask small targets during acquisition. Estimated: designers benefit from routing the 5 V supply through a separate low-noise LDO away from high-power RF chains; the HTQFP PowerPAD package provides PCB-level shielding when an RF cage is mounted above the board. The pin-compatible AD6645 retrofit story is particularly valuable for legacy defense system retrofits where modern performance upgrades must coexist with existing mechanical and connector layouts.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ADS5423IPJYRG3 — 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 | ADS5423IPJ | ADS5423IPJG3 | ADS5422Y/1K5G4 | ADS5103CPFBRG4 |
|---|---|---|---|---|---|---|
| Package | 52-HTQFP PowerPAD (10x10 mm) | 52-HTQFP PowerPAD - same | 52-HTQFP PowerPAD - same | 52-HTQFP PowerPAD - same | TQFP-48 (smaller) | TQFP-80 (larger) |
| Brand | Texas Instruments | Texas Instruments - same | Texas Instruments - same | Texas Instruments - same | Texas Instruments - same | Texas Instruments - same |
| Resolution | 14 bit | 14 bit | 14 bit | 14 bit | 12 bit | 12 bit |
| Maximum Sample Rate | 80 MSPS | 80 MSPS | 80 MSPS | 80 MSPS | 80 MSPS | 40 MSPS |
| Analog Supply | 5 V | 5 V | 5 V | 5 V | 5 V | 3.3 V |
| Digital Output Logic | 3.3 V CMOS | 3.3 V CMOS | 3.3 V CMOS | 3.3 V CMOS | 3.3 V CMOS | 3.3 V CMOS |
Bảo phân biệt quan trọng
- Pin-compatible AD6645 retrofit path (vsAD6645)
- Full-resolution drop-in family versus lower-bit parts (vsADS5422Y/1K5G4)
- Higher sample rate at same bit count (vsADS5103CPFBRG4)
Ghi chú thiết kế
Estimated: the ADS5423IPJYRG3 dissipates 1.85 W at 80 MSPS, which demands an HTQFP PowerPAD soldered to a copper pour of at least 1 square inch to maintain junction temperature within industrial limits. With theta_JA of approximately 25 C/W (per TI layout guidelines for the 52-pin HTQFP), the junction rise above ambient is roughly 46 C - well below the 125 C silicon ceiling at 85 C ambient. Without adequate copper relief, junction temperature can climb past 130 C and trigger thermal-induced linearity drift. Add thermal vias under the power pad per the TI ADS5423 datasheet layout example.
Per TI ADS5423 datasheet: place AVDD 5 V bypass ceramics directly at the AVDD pins (10 uF X7R in parallel with 0.1 uF X7R), and DRVDD 3.3 V bypass exactly at the DRVDD pins. Use a single ground plane partitioned so analog return currents from the input buffer and reference stay on the ADC side of the plane, while digital return currents are routed away. Maintain 100-ohm differential impedance on the AIN/AIN_b pair and 50-ohm single-ended impedance on the digital output bus for clean 80 MSPS operation.
Drive the AIN/AIN_b inputs through a wideband transformer (e.g., Mini-Circuits ADT1-1WT) to satisfy the 2.2 Vpp differential input range while suppressing common-mode noise. The on-chip input buffer presents a relatively high impedance at low frequencies - per the TI datasheet, add 100-ohm differential termination resistors at the ADC inputs to flatten the response. For single-ended operation, leave the negative input AC-grounded with a 0.1 uF capacitor to bias VCM; expect 3-5 dB SNR loss compared to differential drive.
Per the TI ADS5423 datasheet, common pitfalls include: (1) failing to solder the PowerPAD to a copper plane, causing thermal shutdown; (2) routing digital CMOS outputs through the analog ground return and coupling noise back into the reference; (3) using LVTTL loads above the rated 10 pF cap per output; (4) ignoring the ENABLE pin sequencing when cascading multiple ADCs - tie ENABLE high only after both AVDD and DRVDD have settled to avoid latch-up. These four failure modes account for most ADS5423 design returns.
Thông tin tuân thủ
RoHS and REACH compliant per TI product page; not AEC-Q100 qualified (industrial-grade -40 C to +85 C only). Lead-free and halogen-free reflow compatible. Trade-compliance and country-of-origin data per TI environmental disclosure.
