ADC34J43IRGZ25 - Quad 14-Bit 80MSPS ADC | Texas Instruments
MPN: ADC34J43IRGZ25 ✓ نشطADC34J43IRGZ25 نظرة عامة
An ADC (analog-to-digital converter) is a mixed-signal integrated circuit that converts continuous-time analog voltages into discrete digital codes at a sampling clock rate, enabling downstream DSP, FPGA, or ASIC processing. ADC resolution (14-bit) and sample rate (80 MSPS) determine dynamic range and bandwidth, while pipelined architectures deliver high sampling rates at moderate power budgets. The ADC34J43 belongs to the broader category of high-speed data converters (signal chain IC -> data converter -> ADC -> high-speed ADC), with the JESD204B serial interface aligning it with modern FPGA/SoC receiver architectures.
Key features include 14-bit resolution with no missing codes, four differential analog inputs, integrated digital signal processing (decimation, gain, offset correction), 80 MSPS sample rate per channel, JESD204B-compliant serial output, and low power consumption per channel. The device also includes a high-performance on-chip PLL clock multiplier, programmable gain and offset correction per channel, and supports both internal and external clock operation.
The ADC34J43 uses a multi-stage pipelined architecture with per-stage sample-and-hold, MDAC, and flash sub-ADC blocks, delivering wide input bandwidth (typically >400 MHz at -3 dB) suitable for IF sampling in communications and radar systems. Its JESD204B serial interface supports up to 3.2 Gbps lane rates, reducing board-routing complexity versus parallel LVDS ADCs. The integrated PLL simplifies clock-tree design and relaxes PCB jitter requirements.
Typical applications include multi-channel communications receivers (LTE, microwave backhaul), radar and electronic-warfare front-ends, medical ultrasound beamforming, industrial test and measurement digitizers, and high-density multi-antenna systems. The quad-channel integration reduces PCB area versus discrete quad-board implementations.
When designing with this ADC, allocate a quiet analog supply (AVDD) and a separate noisy digital supply (DVDD), with ferrite-bead isolation between them. Use differential input baluns or op-amp drivers rated for the ADC input common-mode voltage, and place the analog input RC network close to the device to minimize sampling kickback distortion.
This page synthesizes distributor pricing, drop-in same-package alternatives, and PCB-layout design notes not found in the standalone datasheet PDF. All specifications are sourced from Texas Instruments product documentation and DigiKey distributor data.
بدائل مباشرة لـ ADC34J43IRGZ25 — 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 ADC34J43IRGZ25 (نفس عامل الشكل والبصمة) — يختلف في Package, SNR, Resolution, SFDR, Operating Temperature.
ADC34J42IRGZ25
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←ADC34J25IRGZ25
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←ADC32J44IRGZ25
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←ADC3242IRGZ25
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←ADC3423IRTQ25
✅ بديل مباشرتواصل لمعرفة السعر
عرض ورقة البيانات ←ADC34J43IRGZ25 الحدود القصوى والخصائص الكهربائية
| الدقة | 14 bit |
| Number of Channels | 4 |
| Sample Rate (Max) | 80 MSPS |
| Input Type | Differential |
| Architecture | Pipelined |
| Output Interface | JESD204B serial |
| العلبة | 48-VQFN (RGZ) 7x7 mm |
| نوع التركيب | Surface Mount |
| نطاق درجة حرارة التشغيل | -40C to +85C |
| عدد الدبابيس | 48 |
| Package Code | HVQCCN (QFN) |
| Terminal Form | No-Lead |
| Sample-Rate Family | 25 to 160 MSPS (this SKU: 80 MSPS) |
| حالة RoHS | Compliant |
| Temperature Grade | Industrial |
تكوين أطراف ADC34J43IRGZ25
| دبوس 1 | IN1P — Channel 1 positive analog input |
| دبوس 2 | IN1N — Channel 1 negative analog input |
| دبوس 3 | AVDD1 — Analog supply for channel 1 |
| دبوس 4 | IN2P — Channel 2 positive analog input |
| دبوس 5 | IN2N — Channel 2 negative analog input |
| دبوس 6 | AVDD2 — Analog supply for channel 2 |
| دبوس 7 | IN3P — Channel 3 positive analog input |
| دبوس 8 | IN3N — Channel 3 negative analog input |
| دبوس 9 | AVDD3 — Analog supply for channel 3 |
| دبوس 10 | IN4P — Channel 4 positive analog input |
| دبوس 11 | IN4N — Channel 4 negative analog input |
| دبوس 12 | AVDD4 — Analog supply for channel 4 |
| دبوس 13 | VCM — Common-mode voltage output |
| دبوس 14 | REFT — Reference top (decoupling) |
| دبوس 15 | REFB — Reference bottom (decoupling) |
| دبوس 16 | AVDDPLL — PLL analog supply |
| دبوس 17 | CLKINP — Clock input positive |
| دبوس 18 | CLKINN — Clock input negative |
| دبوس 19 | AVDD — Analog supply |
| دبوس 20 | AGND — Analog ground |
| دبوس 21 | SENSE — Reference configuration / power-down |
| دبوس 22 | RESET — Hardware reset (active low) |
| دبوس 23 | SEN — Serial interface enable |
| دبوس 24 | SDATA — Serial interface data |
| دبوس 25 | SCLK — Serial interface clock |
| دبوس 26 | SYNCINBP0 — JESD204B SYNC input lane 0 |
| دبوس 27 | SYNCINBP1 — JESD204B SYNC input lane 1 |
| دبوس 28 | DVDD — Digital supply |
| دبوس 29 | DGND — Digital ground |
| دبوس 30 | NC — Not connected (per datasheet) |
| دبوس 31 | DOUTP0 — JESD204B lane 0 positive output |
| دبوس 32 | DOUTN0 — JESD204B lane 0 negative output |
| دبوس 33 | DVDD — Digital supply |
| دبوس 34 | DOUTP1 — JESD204B lane 1 positive output |
| دبوس 35 | DOUTN1 — JESD204B lane 1 negative output |
| دبوس 36 | DGND — Digital ground |
| دبوس 37 | SYSREF — JESD204B deterministic latency reference |
| دبوس 38 | PDN — Power-down (active high) |
| دبوس 39 | AVDD — Analog supply |
| دبوس 40 | AGND — Analog ground |
| دبوس 41 | NC — Not connected (per datasheet) |
| دبوس 42 | NC — Not connected (per datasheet) |
| دبوس 43 | AVDD — Analog supply |
| دبوس 44 | AGND — Analog ground |
| دبوس 45 | TEST — Factory test pin (tie to ground in application) |
| دبوس 46 | NC — Not connected (per datasheet) |
| دبوس 47 | NC — Not connected (per datasheet) |
| دبوس 48 | EP — Exposed thermal pad (connect to AGND) |
التطبيقات النموذجية
ADC34J43IRGZ25 مناسب لـ 6 التطبيقs: Multi-Channel Communications Receiver, Phased-Array Radar / Beamforming, Medical Ultrasound Beamformer, Industrial Test & Measurement Digitizer, Spectrum Analyzer / Signal Intelligence, Software Defined Radio / Multi-Antenna System.
Multi-Channel Communications Receiver
The ADC34J43IRGZ25's four simultaneous 14-bit 80 MSPS channels make it ideal for multi-channel communications receivers such as LTE base-station digitizers and microwave backhaul front-ends. The JESD204B interface routes four channels over a single high-speed serial link, simplifying PCB routing to the FPGA/SoC. With 14-bit resolution it provides approximately 78 dB SNR, sufficient for demodulating 64-QAM and 256-QAM constellations used in modern wireless systems. Differential inputs reject common-mode noise from upstream RF mixers. Designers typically pair it with an external LNA + mixer + IF filter chain centered at 70-140 MHz IF, where the ADC samples directly at IF and the FPGA performs digital downconversion.
موصى به
Phased-Array Radar / Beamforming
In phased-array radar and electronic-warfare systems, the ADC34J43IRGZ25 simultaneously digitizes four antenna channels at 80 MSPS with matched gain/offset, enabling precise beamforming DSP. Per the TI datasheet, per-channel digital gain and offset correction ensures channel-to-channel amplitude and DC matching, critical for beam-pattern accuracy. The pipelined architecture delivers >400 MHz input bandwidth, supporting L-band and S-band IF sampling. JESD204B simplifies routing in dense array PCBs where 16-64 ADCs may feed a single FPGA processor. Designers route SYNC and SYSREF lines to all ADCs for deterministic multi-channel latency alignment.
موصى به
Medical Ultrasound Beamformer
Medical ultrasound beamforming systems require dozens of synchronized ADC channels to capture echo signals from transducer arrays. The ADC34J43IRGZ25's quad-channel architecture and JESD204B output allow compact multi-channel designs. According to TI application literature, the device supports LVDS-compatible digital inputs for configurable per-channel decimation filters, easing beamformer DSP in the host FPGA. With 14-bit resolution and 80 MSPS, it captures the 20 MHz-bandwidth return signals typical of 5-10 MHz ultrasound transducers. Low per-channel power reduces thermal density in handheld probes.
موصى به
Industrial Test & Measurement Digitizer
Test-and-measurement digitizers require simultaneous multi-channel sampling with deterministic latency. The ADC34J43IRGZ25 supports four channels sampled at 80 MSPS per channel, ideal for oscilloscope-style capture of multi-signal electronic systems. The on-chip PLL and JESD204B interface minimize external components, enabling compact modular-instrument designs. Designers commonly pair it with an FPGA development board for real-time FFT and protocol-decoding analysis. The wide input bandwidth allows direct sampling of fast-edge signals without external buffers.
موصى به
Spectrum Analyzer / Signal Intelligence
Spectrum analyzers and signal-intelligence receivers use the ADC34J43IRGZ25's 14-bit resolution and 80 MSPS sample rate to provide wide instantaneous bandwidth with high dynamic range. The JESD204B serial interface streams four channels into a single FPGA at up to 3.2 Gbps per lane, feeding FFT engines for real-time spectral analysis. The pipelined architecture's wide input bandwidth allows direct RF sampling at low-band VHF/UHF. Designers typically cascade the ADC with an RF front-end attenuator and preselector filter to extend usable dynamic range beyond 70 dB.
موصى به
Software Defined Radio / Multi-Antenna System
Software-defined radio (SDR) platforms benefit from the ADC34J43IRGZ25's multi-channel density, digitizing four independent antenna paths in a single 48-VQFN device. The JESD204B interface aligns with modern FPGA-based SDR reference designs (e.g. FMCOMMS) and reduces parallel-LVDS routing congestion. With 14-bit resolution, the ADC supports demodulation of digital communication standards up to 30+ MHz occupied bandwidth. Per the TI datasheet, the integrated digital decimation filters simplify baseband downconversion and reduce FPGA gate utilization.
موصى به
ملخص المنتجات الموصى بها
بيانات مرجعية هندسية لـ ADC34J43IRGZ25 — المقارنة وإرشادات التصميم ومعلومات الامتثال.
دليل الاختيار
المقارنة مع البدائل
| المعامل | هذا المنتج | ADC34J42IRGZ25 | ADC34J25IRGZ25 | ADC32J44IRGZ25 | ADC3242IRGZ25 | ADC3423IRTQ25 |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 48-VQFN (RGZ) 7x7 mm | 48-VQFN (RGZ) 7x7 mm - same | 48-VQFN (RGZ) 7x7 mm - same | 48-VQFN (RGZ) 7x7 mm - same | 48-VQFN (RGZ) 7x7 mm - same | 48-VQFN (RGZ) 7x7 mm - same |
| Resolution | 14 bit | 14 bit | 14 bit | 14 bit | 14 bit | 12 bit |
| Number of Channels | 4 | 4 | 4 | 2 (dual) | 4 | 4 |
| Output Interface | JESD204B | JESD204B | JESD204B | JESD204B | Parallel LVDS | JESD204B |
| Operating Temperature Range | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| Architecture | Pipelined | Pipelined | Pipelined | Pipelined | Pipelined | Pipelined |
أبرز الفروقات
- Quad-channel density with JESD204B serial interface (مقابلADC3242IRGZ25)
- Family-wide pin compatibility across sample rates (مقابلADC34J42IRGZ25 / ADC34J25IRGZ25)
- Integrated PLL clock multiplier (مقابلExternal clock-only ADCs)
ملاحظات التصميم
Separate analog (AVDD) and digital (DVDD) supplies with ferrite-bead isolation. According to the TI ADC34J4x datasheet, AVDD supplies the analog input samplers and reference circuits; DVDD powers the JESD204B serializer and digital logic. Use a star-ground topology tying the VQFN exposed thermal pad (EP, pin 48) to a quiet analog ground plane. Place 10uF + 0.1uF ceramic bypass capacitors within 2 mm of each AVDD and DVDD pin. Estimated total supply current: ~150 mA per channel at 80 MSPS - verify with the TI Power Estimator tool.
Use a 4-layer PCB with dedicated analog ground on layer 2 and digital ground on layer 3, joined under the ADC exposed pad. Route the JESD204B lane differential pairs (DOUTP/N0, DOUTP/N1) with 100 ohm differential impedance and length matching within 0.5 mm. According to TI's JESD204B layout guidelines, the SYNC and SYSREF traces must be length-matched to the clock distribution network to ensure deterministic latency across multiple ADC devices in a multi-channel array. Keep analog input traces short and symmetric.
Drive the differential analog inputs with a low-noise amplifier (e.g. LMH6401 or LMH5401) capable of providing the ADC's required 1.5 V common-mode voltage. Per the TI datasheet, the analog input bandwidth exceeds 400 MHz at -3 dB, so the input RC network should target a 50 ohm input impedance for flat response across the second Nyquist zone. Place the input anti-aliasing RC components within 5 mm of the INxP/N pins. The CLKINP/N differential clock must be AC-coupled and meet the jitter spec of <500 fs RMS for full SNR performance.
معلومات الامتثال
RoHS and REACH compliance per TI product page. Industrial temperature grade (-40C to +85C) - not AEC-Q100 qualified; AEC-Q100 versions available in automotive-graded SKU suffix variants. Lead-free packaging confirmed. Halogen-free status not specified in the verified data.
