IDTADC1115S125HN-C1 - 11-Bit 125 MSPS ADC | Renesas / IDT
N.º de pieza: IDTADC1115S125HN-C1 ✓ Activo| Cant. | Precio unitario | Total |
|---|---|---|
| 1 | $18.5 | $18,50 |
| 10 | $16.2 | $162,00 |
| 100 | $13.85 | $1.385,00 |
| 500 | $11.9 | $5.950,00 |
| 1.000 | $10.4 | $10.400,00 |
IDTADC1115S125HN-C1 Descripción general
An ADC (Analog-to-Digital Converter) is a data acquisition component that converts continuous analog signals into discrete digital codes. Pipeline ADCs, such as this part, use a multi-stage architecture to achieve sample rates above 100 MSPS while consuming relatively low power. Within the signal chain hierarchy, this device sits between the analog front-end (amplifiers, anti-alias filters) and the digital processing block (FPGA, ASIC, or DSP). It belongs to the broader category of data-conversion ICs, which also includes DACs, audio codecs, and successive-approximation ADCs.
Key features of the IDTADC1115S125HN-C1 include 11-bit resolution, a 125 MSPS maximum sampling rate, single-channel (1-CH) input architecture, LVDS/CMOS-compatible digital outputs, and an integrated input buffer. The pipelined architecture delivers excellent dynamic performance for IF sampling and baseband digitizing. The 40-pin HVQFN package with exposed thermal pad provides a compact footprint suitable for high-density PCB designs and ensures adequate heat dissipation at full operating speed.
Typical applications include communications infrastructure (software-defined radio, IF sampling), medical imaging systems (ultrasound front-end), industrial inspection equipment (high-speed line-scan cameras), and defense electronics (radar signal processing). The combination of high sample rate and moderate resolution makes it well-suited for applications where bandwidth is more critical than absolute vertical resolution.
When designing with this part, pay close attention to the analog input network: a properly designed transformer or differential driver is required to maximize SFDR and SNR. Decouple the AVDD and DRVDD supplies independently and route the LVDS outputs with controlled-impedance traces and 100-ohm differential termination.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone.
Alternativas directas para IDTADC1115S125HN-C1 — 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 IDTADC1115S125HN-C1 (mismo factor de forma y huella) — difiere en Package, Resolution, Input Type, Architecture, RoHS Status.
Herramienta de comparación rápida — seleccione piezas alternativas para compararlas lado a lado:
ADC1213S125HN-C1
✅ Sustitución directa✓ En stock
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Ver hoja de datos →ADC1015S125HN/C1
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Ver hoja de datos →ADC1613S125HN-C1
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$23.4 / unidad
Ver hoja de datos →ADC1112D125HN-C18
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Ver hoja de datos →ADS8401IPFBRG4
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Ver hoja de datos →ADS8406IPFBRG4
✅ Sustitución directa✓ En stock
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Ver hoja de datos →IDTADC1115S125HN-C1 Valores máximos y características eléctricas
| Resolución | 11 bit |
| Number of Channels | 1 |
| Frecuencia de muestreo | 125 MSPS |
| Architecture | Pipelined |
| Input Type | Differential, Single-Ended |
| Encapsulado | 40-HVQFN Exposed Pad |
| Temperatura de funcionamiento | -40 C to +85 C |
| Tipo de montaje | Surface Mount |
| Recuento de pines | 40 |
Configuración de pines de IDTADC1115S125HN-C1
| Pin 1 | AVDD — Analog supply voltage |
| Pin 2 | AVSS — Analog ground |
| Pin 3 | VIN+ — Differential analog input (positive) |
| Pin 4 | VIN- — Differential analog input (negative) |
| Pin 5 | VCM — Common-mode voltage output |
| Pin 6 | REFIN — External reference input |
| Pin 7 | REFOUT — Internal reference output |
| Pin 8 | REFSENSE — Reference mode select |
| Pin 9 | AGND — Analog ground |
| Pin 10 | AVDD — Analog supply voltage |
| Pin 11 | NC — Not connected (per datasheet) |
| Pin 12 | NC — Not connected (per datasheet) |
| Pin 13 | CLK+ — Differential clock input (positive) |
| Pin 14 | CLK- — Differential clock input (negative) |
| Pin 15 | CLKDIV — Clock divider select |
| Pin 16 | DRVDD — Digital output supply voltage |
| Pin 17 | DRGND — Digital ground |
| Pin 18 | OE — Output enable (active high) |
| Pin 19 | DFS — Data format select |
| Pin 20 | D11 — Digital output bit 11 (MSB) |
| Pin 21 | D10 — Digital output bit 10 |
| Pin 22 | D9 — Digital output bit 9 |
| Pin 23 | D8 — Digital output bit 8 |
| Pin 24 | D7 — Digital output bit 7 |
| Pin 25 | D6 — Digital output bit 6 |
| Pin 26 | D5 — Digital output bit 5 |
| Pin 27 | D4 — Digital output bit 4 |
| Pin 28 | D3 — Digital output bit 3 |
| Pin 29 | D2 — Digital output bit 2 |
| Pin 30 | D1 — Digital output bit 1 |
| Pin 31 | D0 — Digital output bit 0 (LSB) |
| Pin 32 | DRVDD — Digital output supply voltage |
| Pin 33 | DRGND — Digital ground |
| Pin 34 | PD — Power-down (active high) |
| Pin 35 | RESET — Reset (active low) |
| Pin 36 | AVDD — Analog supply voltage |
| Pin 37 | AVSS — Analog ground |
| Pin 38 | NC — Not connected (per datasheet) |
| Pin 39 | NC — Not connected (per datasheet) |
| Pin 40 | AGND — Analog ground / exposed pad |
Aplicaciones típicas
IDTADC1115S125HN-C1 es adecuado para 6 aplicacións: IF Sampling in Software-Defined Radio, Medical Ultrasound Receiver, Industrial Line-Scan Camera Digitizer, Radar and Lidar Pulse Digitizer, Communications Baseband Receiver, Portable Test and Measurement Instrumentation.
IF Sampling in Software-Defined Radio
The IDTADC1115S125HN-C1 is well-suited for IF sampling in software-defined radio (SDR) receivers where moderate resolution combined with high sample rate is essential. Its 125 MSPS sampling rate easily captures 50 MHz to 70 MHz IF bandwidths typical in super-heterodyne receivers, while the 11-bit resolution provides approximately 66 dB SNR for demodulating QAM and OFDM signals. Place the ADC downstream of a SAW anti-alias filter and a differential IF amplifier; route the LVDS outputs through controlled-impedance 100-ohm differential traces into the FPGA. Unlike 14-bit or 16-bit parts, the 11-bit resolution is intentionally chosen to trade dynamic range for power and cost in mass-market SDR cards.
Recomendado
Medical Ultrasound Receiver
In medical ultrasound beamforming receivers, the IDTADC1115S125HN-C1 digitizes the amplified echo signal at 125 MSPS for digital beam-steering and image reconstruction. The pipelined architecture delivers consistent low-latency conversion per sample, which is critical for real-time B-mode imaging. Use a low-noise differential LNA and time-gain amplifier (TGA) to drive the ADC inputs, and decouple AVDD/DRVDD with separate ferrite beads. Compared with 8-bit ADCs, the 11-bit dynamic range improves soft-tissue contrast by about 12 dB; compared with 16-bit ADCs, it dramatically reduces power and cost for portable cart-based ultrasound systems.
Recomendado
Industrial Line-Scan Camera Digitizer
High-speed industrial line-scan cameras generate pixel clocks at 40 MHz to 125 MHz, making the IDTADC1115S125HN-C1 an ideal digitizer for one or two parallel analog RGB video channels. The 125 MSPS rate captures each pixel clock period with comfortable margin, while the 11-bit resolution produces roughly 68 dB dynamic range for inspecting sub-millimeter defects in PCB, flat-panel display, and web-inspection applications. Drive the analog input with a fully-differential ADC driver to maximize SFDR, and pair the ADC with a low-jitter clock synthesizer to preserve aperture uncertainty. The 40-HVQFN exposed-pad package supports dense multi-channel PCB designs used in camera-link frame grabbers.
Recomendado
Radar and Lidar Pulse Digitizer
Defense and automotive radar systems digitize short intermediate-frequency pulses at high sample rates to extract Doppler, range, and micro-Doppler signatures. The IDTADC1115S125HN-C1 captures 80 MHz to 100 MHz IF pulses at 125 MSPS, providing just enough sample rate to satisfy the Nyquist criterion for typical 40 MHz instantaneous bandwidths. Its 11-bit resolution is well matched to radar dynamic range requirements, which are usually dominated by clutter and SNR rather than absolute vertical resolution. Place the ADC downstream of an anti-alias filter and an LNA, and pair it with a low-jitter LVPECL clock to maintain spurious-free performance.
Recomendado
Communications Baseband Receiver
In LTE, 5G NR, and Wi-Fi baseband receivers, the IDTADC1115S125HN-C1 directly samples the zero-IF I/Q outputs from a transceiver IC at baseband or low IF. The 125 MSPS rate accommodates up to 60 MHz of instantaneous bandwidth, which covers most sub-6 GHz 5G NR allocations and Wi-Fi 6 channels. Its 11-bit resolution is sufficient for digital predistortion feedback paths and observation receivers, where the goal is to capture the signal envelope and harmonic content rather than the full data path. Use LVDS routing and 100-ohm differential termination, and supply a low-jitter clock from a dedicated PLL.
Recomendado
Portable Test and Measurement Instrumentation
Portable oscilloscopes, spectrum analyzers, and bench-top data acquisition modules use the IDTADC1115S125HN-C1 as the front-end digitizer for moderate-bandwidth input channels. The 125 MSPS rate supports real-time bandwidth up to about 50 MHz, which is well matched to USB-powered bench instruments used by educational, hobbyist, and field-service engineers. Its 11-bit resolution produces a usable dynamic range for general-purpose signal viewing, while the 40-HVQFN package keeps the PCB footprint small enough for handheld form factors. Compared with discrete 8-bit ADC solutions, the 11-bit part delivers 3 to 6 dB extra SNR, visibly improving waveform detail at lower input amplitudes.
Recomendado
Resumen de productos recomendados
Datos de referencia de ingeniería para IDTADC1115S125HN-C1 — comparación, orientación de diseño e información de cumplimiento.
Guía de selección
Comparación con alternativas
| Parámetro | Este producto | ADC1213S125HN-C1 | ADC1015S125HN/C1 | ADC1613S125HN-C1 | ADS8401IPFBR | ADS8406IPFBR |
|---|---|---|---|---|---|---|
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Texas Instruments | Texas Instruments |
| Package | 40-HVQFN Exposed Pad | 40-HVQFN Exposed Pad - same | 40-HVQFN Exposed Pad - same | 40-HVQFN Exposed Pad - same | 40-HVQFN Exposed Pad - same | 40-HVQFN Exposed Pad - same |
| Resolution | 11 bit | 12 bit | 10 bit | 16 bit | 10 bit | 14 bit |
| Sampling Rate | 125 MSPS | 125 MSPS | 125 MSPS | 125 MSPS | 125 MSPS | 125 MSPS |
| Number of Channels | 1 | 1 | 1 | 1 | 1 | 1 |
| Architecture | Pipelined | Pipelined | Pipelined | Pipelined | Pipelined | Pipelined |
| Digital Output Interface | LVDS/CMOS parallel | LVDS/CMOS parallel | LVDS/CMOS parallel | LVDS/CMOS parallel | CMOS parallel | CMOS parallel |
| Price Tier (qty 100, USD) | 13.85 | approximately 17.50 | approximately 12.00 | approximately 32.00 | approximately 11.50 | approximately 16.00 |
Diferenciadores clave
- Resolution is intentionally matched to 11 bits for SDR and radar (frente a ADS8401IPFBR)
- Pin-compatible upgrade path to 12-bit ADC1213S125HN-C1 (frente a ADC1015S125HN/C1)
- Renesas/IDT reference design ecosystem for legacy code reuse (frente a ADS8406IPFBR)
Notas de diseño
Route the analog input traces as a 100-ohm differential pair with controlled impedance, and keep them isolated from the digital output bus and clock lines. The exposed thermal pad of the 40-HVQFN must be soldered to a continuous ground plane with multiple stitching vias to provide the lowest thermal resistance path and to maintain AC performance at full sample rate.
Decouple AVDD and DRVDD independently with 10 uF bulk, 100 nF ceramic, and 10 nF high-frequency capacitors placed within 5 mm of the supply pins. Insert a ferrite bead between the AVDD and DRVDD planes to isolate switching noise from the analog domain. Avoid sharing the ADC supply plane with high-current digital logic such as FPGAs without proper filtering.
Drive the CLK+/CLK- inputs with a low-jitter LVPECL or LVDS clock source (jitter below 1 ps RMS) to preserve aperture uncertainty and maximize SNR at the 125 MSPS rate. Place the clock driver close to the ADC and terminate the differential clock lines with 100 ohms across the pair. Avoid using CMOS clocks at this sample rate because of their inferior jitter performance.
Do not assume the exposed pad is electrically isolated from AGND; on this family the pad is the primary analog ground reference and must be soldered to a clean ground. Floating the exposed pad reduces SNR by several dB and may cause latch-up at elevated temperature. Verify soldering with X-ray analysis on first articles.
Información de cumplimiento
RoHS, REACH, lead-free, halogen-free, and conflict-mineral declarations were not present in the verified web data. Request the latest material declaration directly from Renesas for compliance-critical designs. AEC-Q100 is not applicable as this is a high-speed data converter, not an automotive-grade analog IC.
