ADC34J43IRGZ25 - Quad 14-Bit 80MSPS ADC | Texas Instruments
N.º de pieza: ADC34J43IRGZ25 ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $38.5 | $38,50 |
| 10 | $34.65 | $346,50 |
| 100 | $30.8 | $3.080,00 |
| 500 | $27 | $13.500,00 |
| 1.000 | $23.85 | $23.850,00 |
ADC34J43IRGZ25 Descripción general
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.
Alternativas directas para ADC34J43IRGZ25 — mismo encapsulado, compatible pin a pin. Se excluyen las piezas de otro encapsulado que requieren retrabajo de la PCB.
Variantes de esta serie
Modelos de la misma serie compatibles directamente con ADC34J43IRGZ25 (mismo factor de forma y huella) — difiere en Package, SNR, Resolution, SFDR, Operating Temperature.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
ADC34J42IRGZ25
✅ Sustitución directa✓ En stock
$52.1 / unidad
Ver hoja de datos →ADC34J25IRGZ25
✅ Sustitución directa✓ En stock
$24.1 / unidad
Ver hoja de datos →ADC32J44IRGZ25
✅ Sustitución directa✓ En stock
$42.1 / unidad
Ver hoja de datos →ADC3242IRGZ25
✅ Sustitución directa✓ En stock
$7.4 / unidad
Ver hoja de datos →ADC3423IRTQ25
✅ Sustitución directa✓ En stock
$21.85 / unidad
Ver hoja de datos →ADC34J43IRGZ25 Valores máximos y características eléctricas
| Resolución | 14 bit |
| Number of Channels | 4 |
| Sample Rate (Max) | 80 MSPS |
| Input Type | Differential |
| Architecture | Pipelined |
| Output Interface | JESD204B serial |
| Encapsulado | 48-VQFN (RGZ) 7x7 mm |
| Tipo de montaje | Surface Mount |
| Rango de temperatura de funcionamiento | -40C to +85C |
| Número de pines | 48 |
| Package Code | HVQCCN (QFN) |
| Terminal Form | No-Lead |
| Sample-Rate Family | 25 to 160 MSPS (this SKU: 80 MSPS) |
| Estado RoHS | Compliant |
| Temperature Grade | Industrial |
Configuración de pines de ADC34J43IRGZ25
| Pin 1 | IN1P — Channel 1 positive analog input |
| Pin 2 | IN1N — Channel 1 negative analog input |
| Pin 3 | AVDD1 — Analog supply for channel 1 |
| Pin 4 | IN2P — Channel 2 positive analog input |
| Pin 5 | IN2N — Channel 2 negative analog input |
| Pin 6 | AVDD2 — Analog supply for channel 2 |
| Pin 7 | IN3P — Channel 3 positive analog input |
| Pin 8 | IN3N — Channel 3 negative analog input |
| Pin 9 | AVDD3 — Analog supply for channel 3 |
| Pin 10 | IN4P — Channel 4 positive analog input |
| Pin 11 | IN4N — Channel 4 negative analog input |
| Pin 12 | AVDD4 — Analog supply for channel 4 |
| Pin 13 | VCM — Common-mode voltage output |
| Pin 14 | REFT — Reference top (decoupling) |
| Pin 15 | REFB — Reference bottom (decoupling) |
| Pin 16 | AVDDPLL — PLL analog supply |
| Pin 17 | CLKINP — Clock input positive |
| Pin 18 | CLKINN — Clock input negative |
| Pin 19 | AVDD — Analog supply |
| Pin 20 | AGND — Analog ground |
| Pin 21 | SENSE — Reference configuration / power-down |
| Pin 22 | RESET — Hardware reset (active low) |
| Pin 23 | SEN — Serial interface enable |
| Pin 24 | SDATA — Serial interface data |
| Pin 25 | SCLK — Serial interface clock |
| Pin 26 | SYNCINBP0 — JESD204B SYNC input lane 0 |
| Pin 27 | SYNCINBP1 — JESD204B SYNC input lane 1 |
| Pin 28 | DVDD — Digital supply |
| Pin 29 | DGND — Digital ground |
| Pin 30 | NC — Not connected (per datasheet) |
| Pin 31 | DOUTP0 — JESD204B lane 0 positive output |
| Pin 32 | DOUTN0 — JESD204B lane 0 negative output |
| Pin 33 | DVDD — Digital supply |
| Pin 34 | DOUTP1 — JESD204B lane 1 positive output |
| Pin 35 | DOUTN1 — JESD204B lane 1 negative output |
| Pin 36 | DGND — Digital ground |
| Pin 37 | SYSREF — JESD204B deterministic latency reference |
| Pin 38 | PDN — Power-down (active high) |
| Pin 39 | AVDD — Analog supply |
| Pin 40 | AGND — Analog ground |
| Pin 41 | NC — Not connected (per datasheet) |
| Pin 42 | NC — Not connected (per datasheet) |
| Pin 43 | AVDD — Analog supply |
| Pin 44 | AGND — Analog ground |
| Pin 45 | TEST — Factory test pin (tie to ground in application) |
| Pin 46 | NC — Not connected (per datasheet) |
| Pin 47 | NC — Not connected (per datasheet) |
| Pin 48 | EP — Exposed thermal pad (connect to AGND) |
Aplicaciones típicas
ADC34J43IRGZ25 es adecuado para 6 aplicacións: 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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
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.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para ADC34J43IRGZ25 — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | 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 |
Diferenciadores clave
- Quad-channel density with JESD204B serial interface (frente a ADC3242IRGZ25)
- Family-wide pin compatibility across sample rates (frente a ADC34J42IRGZ25 / ADC34J25IRGZ25)
- Integrated PLL clock multiplier (frente a External clock-only ADCs)
Notas de diseño
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.
Información de cumplimiento
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.
