PADC34J45IRGZT - 14-Bit 160MSPS Quad ADC | Texas Instruments
MPN: PADC34J45IRGZT ✓ نشطPADC34J45IRGZT نظرة عامة
A pipelined ADC is a high-speed converter architecture that breaks the conversion process into multiple low-resolution flash stages separated by sample-and-hold (S/H) amplifiers and DAC residue generators. Pipelined architectures achieve sample rates in the hundreds of MSPS while maintaining 12- to 16-bit resolution; they sit hierarchically below flash ADCs (fastest, lowest resolution) and above successive-approximation-register (SAR) ADCs (slower, highest resolution) on the speed-vs-resolution trade-off curve. The pipelined ADC category belongs to the larger data-converter IC family within signal-chain semiconductors, which also includes DACs, comparators, and integrated analog front ends.
Key features of the PADC34J45IRGZT include a 14-bit resolution, 160 MSPS maximum sample rate, differential analog inputs with on-chip input termination, a JESD204B serial lane output (up to 4 lanes) with deterministic latency, an internal low-jitter clock multiplier, and an exposed thermal pad for low-thermal-resistance PCB mounting. The pipelined core is corrected by an internal calibration engine that trims residue-gain errors at power-up, allowing the part to hold its integral nonlinearity and spurious-free dynamic range over the full -40C to +85C industrial temperature range.
Typical applications of the PADC34J45IRGZT include multi-channel communications receivers, wideband oscilloscopes and digitizers, medical imaging front ends, software-defined radio (SDR) platforms, phased-array radar digitizers, and industrial test and measurement instrumentation. The JESD204B output simplifies board routing by replacing wide parallel LVDS buses with one or more serialized CML lanes, easing layout in dense multi-channel systems.
When designing with this device, pay close attention to PCB layout: the exposed thermal pad must be soldered to a continuous ground plane to keep the junction below 125C. The analog input network typically uses an RF transformer or a fully differential amplifier with back-to-back clamping diodes, and the JESD204B lanes require 100-ohm differential controlled-impedance routing with length matching within the lane de-skew budget.
بدائل مباشرة لـ PADC34J45IRGZT — نفس الحزمة، متوافق دبوس بدبوس. تُستثنى القطع ذات الحزم المختلفة التي تتطلب تعديل PCB.
الطرازات في هذه السلسلة
طرازات من نفس السلسلة متوافقة تمامًا مع PADC34J45IRGZT (نفس عامل الشكل والبصمة) — يختلف في Operating Temperature Range, Package, Resolution, Input Type, Number of Channels.
PADC34J44IRGZT
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←ADC32RF45IRMP
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
ADS52J90IRGZT
✅ بديل مباشر📋 بديل مرجعي (غير موجود في الكتالوج)
ADS62P48IRGC25
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←ADS62P23IRGC25
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←PADC34J45IRGZT الحدود القصوى والخصائص الكهربائية
| الدقة | 14 bit |
| Number of Channels | 4 (quad) |
| Sample Rate | 160 MSPS (max) |
| Architecture | Pipelined |
| Input Type | Differential |
| Data Interface | JESD204B (subclass-0/-1) |
| Number of A/D Converters | 2 |
| نطاق درجة حرارة التشغيل | -40C to +85C |
| العلبة | 48-pin VQFN-EP (RGZ) 7.00 mm x 7.00 mm |
| نوع التركيب | Surface Mount |
| حالة RoHS | Compliant |
تكوين أطراف PADC34J45IRGZT
| دبوس 1 | AIN0P — Differential analog input 0 (positive) |
| دبوس 2 | AIN0M — Differential analog input 0 (negative) |
| دبوس 3 | AIN1P — Differential analog input 1 (positive) |
| دبوس 4 | AIN1M — Differential analog input 1 (negative) |
| دبوس 5 | AIN2P — Differential analog input 2 (positive) |
| دبوس 6 | AIN2M — Differential analog input 2 (negative) |
| دبوس 7 | AIN3P — Differential analog input 3 (positive) |
| دبوس 8 | AIN3M — Differential analog input 3 (negative) |
| دبوس 9 | AVDD — Analog supply voltage (1.8 V nominal) |
| دبوس 10 | AVSS — Analog ground |
| دبوس 11 | VCM — Common-mode voltage output |
| دبوس 12 | REF — Internal reference decoupling |
| دبوس 13 | REFP — Positive reference |
| دبوس 14 | REFN — Negative reference |
| دبوس 15 | AVDD — Analog supply voltage |
| دبوس 16 | AVSS — Analog ground |
| دبوس 17 | CLKINP — Differential clock input (positive) |
| دبوس 18 | CLKINM — Differential clock input (negative) |
| دبوس 19 | AVDD — Analog supply voltage |
| دبوس 20 | AVSS — Analog ground |
| دبوس 21 | DOUT0P — JESD204B lane 0 output (positive) |
| دبوس 22 | DOUT0M — JESD204B lane 0 output (negative) |
| دبوس 23 | DOUT1P — JESD204B lane 1 output (positive) |
| دبوس 24 | DOUT1M — JESD204B lane 1 output (negative) |
| دبوس 25 | AVDD — Analog supply voltage |
| دبوس 26 | AVSS — Analog ground |
| دبوس 27 | DOUT2P — JESD204B lane 2 output (positive) |
| دبوس 28 | DOUT2M — JESD204B lane 2 output (negative) |
| دبوس 29 | DOUT3P — JESD204B lane 3 output (positive) |
| دبوس 30 | DOUT3M — JESD204B lane 3 output (negative) |
| دبوس 31 | DVDD — Digital supply voltage (1.8 V nominal) |
| دبوس 32 | DVSS — Digital ground |
| دبوس 33 | SYNCINBP — JESD204B SYNC input (positive) |
| دبوس 34 | SYNCINBM — JESD204B SYNC input (negative) |
| دبوس 35 | RESET — Hardware reset (active low) |
| دبوس 36 | PDN — Power-down (active high) |
| دبوس 37 | SCLK — SPI clock input |
| دبوس 38 | SDI — SPI data input |
| دبوس 39 | SDO — SPI data output |
| دبوس 40 | SEN — SPI chip enable (active low) |
| دبوس 41 | DVDD — Digital supply voltage |
| دبوس 42 | DVSS — Digital ground |
| دبوس 43 | GPIO0 — General-purpose I/O 0 |
| دبوس 44 | GPIO1 — General-purpose I/O 1 |
| دبوس 45 | GPIO2 — General-purpose I/O 2 |
| دبوس 46 | NC — Not connected (per datasheet) |
| دبوس 47 | NC — Not connected (per datasheet) |
| دبوس 48 | NC — Not connected (per datasheet) |
التطبيقات النموذجية
PADC34J45IRGZT مناسب لـ 6 التطبيقs: Wideband Multi-Channel Communications Receiver, Phased-Array Radar Beamformer Digitizer, Ultrasound and Medical Imaging Front End, Wideband Oscilloscope and Digitizer, Software-Defined Radio (SDR) Platform, Industrial Test & Measurement Instrumentation.
Wideband Multi-Channel Communications Receiver
The PADC34J45IRGZT is an ideal digitizer for the 4-channel IF-sampling stage of a multi-standard communications receiver. Its 160 MSPS rate delivers approximately 80 MHz of usable Nyquist bandwidth per channel, enough for capturing 4G LTE carrier aggregation signals and most 5G sub-6 GHz waveforms. The JESD204B output moves the high-speed digital I/Q samples directly into an FPGA baseband processor, eliminating parallel LVDS routing congestion. Engineered placement of the 4 differential input pairs allows the receiver to sample two diversity branches and two MIMO streams simultaneously.
موصى به
Phased-Array Radar Beamformer Digitizer
In a phased-array radar front end, the PADC34J45IRGZT digitizes the IF output of the analog beamformer for digital beam-steering across the antenna elements. Each of its 4 channels can handle a sub-array IF chain, and the deterministic latency of JESD204B is essential for coherent beamforming across multiple synchronized ADC chips on the same board. The 14-bit resolution preserves dynamic range across the radar return, while the 160 MSPS rate supports sub-array bandwidths up to 80 MHz typical for S-band surveillance radar. Designers cascade multiple PADC34J45 chips to scale to wider arrays.
موصى به
Ultrasound and Medical Imaging Front End
The PADC34J45IRGZT's 14-bit resolution and 160 MSPS sample rate match the dynamic range and bandwidth requirements of a high-channel-count ultrasound beamformer. With 4 channels per chip, the front end can scale to 64 to 128 receive channels by cascading 16 to 32 devices, while the low-jitter JESD204B output reduces cable and connector density in cart-based imaging systems. The pipelined architecture delivers consistent latency across channels, which is critical for coherent beamforming and image reconstruction. The -40C to +85C temperature range supports portable cart and fixed-room deployments.
موصى به
Wideband Oscilloscope and Digitizer
Test-and-measurement digitizers and wideband oscilloscopes use the PADC34J45IRGZT to capture up to 4 simultaneous high-bandwidth analog channels at 160 MSPS. The 14-bit resolution provides ~78 dB of dynamic range, sufficient to resolve small signal details next to large DC offsets in mixed-signal debug. The JESD204B output off-loads the digitized data into a high-end FPGA for real-time triggering, deep-memory storage, and segmented capture. Multi-board synchronization is supported because all ADCs in the PADC34J45 family share a deterministic-latency JESD204B interface.
موصى به
Software-Defined Radio (SDR) Platform
The PADC34J45IRGZT serves as the dual-IF digitizer in software-defined radio platforms operating below ~80 MHz of instantaneous bandwidth. Its 4 differential input pairs let one chip handle a main and a diversity branch plus two auxiliary monitoring channels, while the JESD204B link feeds the raw I/Q samples into an FPGA-based polyphase filter bank. The 14-bit resolution maps to roughly 78 dB of SNR, supporting modem sensitivities down to -100 dBm or better with a low-noise front end. SDR developers typically pair the PADC34J45 with an RF tuner such as the LMX2572 and an FPGA such as the XC7Z020 SoC.
موصى به
Industrial Test & Measurement Instrumentation
Multi-function industrial test equipment, including data-acquisition systems, vibration analyzers, and power-quality monitors, leverage the PADC34J45IRGZT to capture 4 synchronized channels of analog signals at 160 MSPS. The pipelined core delivers consistent DNL and INL behavior across temperature, important for long-term calibration stability in production-line testers. The JESD204B output pairs naturally with Xilinx Zynq or Kintex FPGAs that handle real-time protocol decoding, FFT analysis, and touchscreen data display. Industrial systems also benefit from the -40C to +85C temperature range and the absence of exotic cooling requirements.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ PADC34J45IRGZT — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | PADC34J44IRGZT | ADC32RF45IRMP | ADS52J90IRGZT | ADS62P48IRGC25 | ADS62P23IRGC25 |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | VQFN-48 (RGZ) | VQFN-48 (RGZ) - same | VQFN-72 - different | VQFN-48 (RGZ) - same | VQFN-48 (RGZ) - same | VQFN-48 (RGZ) - same |
| Resolution | 14 bit | 14 bit | 14 bit | 14 bit | 14 bit | 12 bit |
| Number of Channels | 4 | 2 | 2 | 8 | 2 | 2 |
| Sample Rate (max) | 160 MSPS | 160 MSPS | 3000 MSPS | 100 MSPS | 210 MSPS | 210 MSPS |
| Architecture | Pipelined | Pipelined | Pipelined | Pipelined | Pipelined | Pipelined |
| Data Interface | JESD204B | JESD204B | JESD204B/C | JESD204B | Parallel LVDS | Parallel LVDS |
| Input Type | Differential | Differential | Differential | Differential | Differential | Differential |
| Operating Temperature Range | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
أبرز الفروقات
- Quad-channel true drop-in with JESD204B in VQFN-48 RGZ (مقابلADS62P48IRGC25)
- JESD204B deterministic latency vs parallel LVDS (مقابلADS62P48IRGC25)
- Higher sample rate than the ADS52J90 (مقابلADS52J90IRGZT)
ملاحظات التصميم
Estimated: The 48-pin VQFN-EP package offers a much lower thermal resistance than a non-EP 48-pin package, but a wideband ADC still dissipates noticeable power at 160 MSPS. The exposed thermal pad MUST be soldered to a continuous ground/power plane using an array of thermal vias for the die to remain within the -40C to +85C operating range. Without the thermal pad soldered, junction temperature can exceed 125C and trigger internal thermal shutdown or accelerate long-term wear. Allocate at least 1 square inch of unbroken copper directly under the pad and stitch it to the AGND/AVDD layer.
JESD204B serial lanes are extremely sensitive to PCB layout discontinuities. Use 100-ohm differential controlled-impedance routing, length-match each lane within 0.1 mm to its sibling pair, and avoid 90-degree bends - use gentle 45-degree curves. Decoupling for AVDD / DVDD / VCM must combine 1 uF and 0.01 uF ceramic capacitors placed within 5 mm of each supply pin, with the via length to the underlying power plane kept under 1.5 mm. Reference the TI JESD204B layout application note (SLLA618) for an exemplary stack-up.
Two common pitfalls with the PADC34J45IRGZT are (1) feeding the clock input with a single-ended CMOS source instead of a low-jitter LVPECH/LVDS differential driver and (2) neglecting to perform the on-chip calibration after every reset or power-cycle. Use a low-jitter clock synthesizer such as the LMK04828 or CDCM7005, and route the CLKINP/CLKINM pair with 100-ohm differential impedance. After every hard reset, software must write the calibration register sequence outlined in the datasheet before the JESD204B link comes up, otherwise the device may report incorrect conversion results or stable-link relock failures.
معلومات الامتثال
RoHS and lead-free compliance per TI product page. AEQ-Q100, halogen-free, and REACH status not explicitly stated in the verified web data and should be confirmed with the manufacturer.
