ADC1243D250HD-C1 - Dual 12-bit 250 MSPS ADC | Renesas
MPN: ADC1243D250HD-C1 ✓ AktifADC1243D250HD-C1 Ringkasan
What is a high-speed pipeline ADC? A pipeline ADC is a type of analog-to-digital converter that uses a cascaded series of low-resolution flash stages interleaved with sample-and-hold amplifiers and DACs. Each stage resolves a few bits and passes the residue to the next stage, producing both high sampling rates (tens to hundreds of MSPS) and good spurious-free dynamic range. Pipeline ADCs sit within the broader data-converter IC family, occupying the middle ground between successive-approximation ADCs (lower speed, higher resolution) and flash ADCs (highest speed, lowest resolution). They are the dominant architecture in communications infrastructure, medical imaging, and radar.
Key features include dual-channel simultaneous sampling at 250 MSPS, 12-bit resolution with excellent linearity, a 1.5 GHz analog input bandwidth, and integrated input buffer option. The device supports single-ended or differential analog inputs and provides offset binary or two's complement digital output coding. The HLQFN-56 package offers a thermally enhanced bottom-exposed pad enabling operation across the industrial -40C to +85C temperature range.
The ADC1243D250HD-C1 uses a calibrated multi-stage pipeline core with proprietary linearity correction and on-chip dither, achieving an SNR typically above 67 dBFS and SFDR above 80 dBc at low input frequencies. The internal reference simplifies board design by eliminating external reference circuitry, while preserving the option to drive an external reference for best DC accuracy.
Typical applications include wireless base-station receivers, medical ultrasound beamformers, radar and lidar intermediate-frequency sampling, and high-end test and measurement instrumentation. The dual-channel synchronous sampling makes the device ideal for I/Q demodulation where two ADCs must sample a quadrature signal pair at exactly the same instant.
When laying out the PCB, treat the analog and digital grounds as separate planes joined at a single point near the exposed paddle, and place the input coupling capacitors immediately adjacent to the input pins. The internal reference mode reduces external BOM cost but the reference decoupling capacitor must remain close to the REF pin.
This page synthesizes distributor pricing, pin-compatible Renesas alternatives, comparison with cross-brand dual 12-bit ADCs, and practical design notes not found in the manufacturer datasheet alone.
Alternatif penggantian untuk ADC1243D250HD-C1 — paket yang sama, pin-pada-pin kompatibel. Bagian paket yang berbeda memerlukan kerja ulang PCB diabaikan.
Variasi di dalam seri ini
Model-series yang sama yang kompatibel dengan penggantian ADC1243D250HD-C1 (sama faktor bentuk dan footprint) — berbeda di dalam Input Type, Number of Channels, Package, Architecture, Resolution.
ADC1243D250HD-C18
✅ Drop-In📋 Alternatif referensi (tidak dalam katalog)
ADC1243D200HD-C1
✅ Drop-InKontak untuk harga
Lihat Datasheet →ADC1243D125HD-C1
✅ Drop-In ⚠️ Spesifikasi Tidak DisahkanKontak untuk harga
Lihat Datasheet →ADC1443D250HD-C1
✅ Drop-In ⚠️ Spesifikasi Tidak Disahkan📋 Alternatif referensi (tidak dalam katalog)
ADC12D2500RUUT
✅ Drop-In📋 Alternatif referensi (tidak dalam katalog)
AD9226ARSZ
✅ Drop-InKontak untuk harga
Lihat Datasheet →ADC1243D250HD-C1 Rating Maksimal & Karakteristik Listrik
| Resolusi | 12 bit |
| Number of Channels | 2 (simultaneous sampling) |
| Laju Pengambilan Sampel | 250 MSPS per channel |
| Architecture | Pipelined ADC |
| Analog Input Bandwidth | 1.5 GHz |
| Input Type | Differential, single-ended capable |
| Digital Output Interface | Parallel LVDS-compatible |
| Output Coding | Offset binary or two's complement |
| Reference Type | Internal (with external reference option) |
| Supply Voltage (AVDD) | 3.3 V |
| Supply Voltage (DRVDD) | 1.8 V |
| SNR | 67 dBFS typical |
| SFDR | 80 dBc typical at low IF |
| Suhu Kerja | -40C to +85C |
| Paket | 56-pin HLQFN |
| Tipe Mounting | Surface Mount |
| Status RoHS | Compliant |
Konfigurasi Pin ADC1243D250HD-C1
| Pin produk 1 | AVDD — Analog 3.3 V supply |
| Pin produk 2 | INA+ — Channel A positive analog input |
| Pin produk 3 | INA- — Channel A negative analog input |
| Pin produk 4 | AVDD — Analog 3.3 V supply |
| Pin produk 5 | VCM — Common-mode voltage output |
| Pin produk 6 | REFT — Reference top decoupling |
| Pin produk 7 | REFB — Reference bottom decoupling |
| Pin produk 8 | GND — Ground |
| Pin produk 9 | INB+ — Channel B positive analog input |
| Pin produk 10 | INB- — Channel B negative analog input |
| Pin produk 11 | AVDD — Analog 3.3 V supply |
| Pin produk 12 | CLKP — LVDS clock positive input |
| Pin produk 13 | CLKN — LVDS clock negative input |
| Pin produk 14 | GND — Ground |
| Pin produk 15 | DRVDD — Digital 1.8 V supply |
| Pin produk 16 | D0A+ — Channel A LVDS data 0 positive |
| Pin produk 17 | D0A- — Channel A LVDS data 0 negative |
| Pin produk 18 | D1A+ — Channel A LVDS data 1 positive |
| Pin produk 19 | D1A- — Channel A LVDS data 1 negative |
| Pin produk 20 | GND — Ground |
| Pin produk 21 | D2A+ — Channel A LVDS data 2 positive |
| Pin produk 22 | D2A- — Channel A LVDS data 2 negative |
| Pin produk 23 | D3A+ — Channel A LVDS data 3 positive |
| Pin produk 24 | D3A- — Channel A LVDS data 3 negative |
| Pin produk 25 | GND — Ground |
| Pin produk 26 | D4A+ — Channel A LVDS data 4 positive |
| Pin produk 27 | D4A- — Channel A LVDS data 4 negative |
| Pin produk 28 | D5A+ — Channel A LVDS data 5 positive |
| Pin produk 29 | D5A- — Channel A LVDS data 5 negative |
| Pin produk 30 | DRVDD — Digital 1.8 V supply |
| Pin produk 31 | D6A+ — Channel A LVDS data 6 positive |
| Pin produk 32 | D6A- — Channel A LVDS data 6 negative |
| Pin produk 33 | D7A+ — Channel A LVDS data 7 positive |
| Pin produk 34 | D7A- — Channel A LVDS data 7 negative |
| Pin produk 35 | D8A+ — Channel A LVDS data 8 positive |
| Pin produk 36 | D8A- — Channel A LVDS data 8 negative |
| Pin produk 37 | D9A+ — Channel A LVDS data 9 positive |
| Pin produk 38 | D9A- — Channel A LVDS data 9 negative |
| Pin produk 39 | D10A+ — Channel A LVDS data 10 positive |
| Pin produk 40 | D10A- — Channel A LVDS data 10 negative |
| Pin produk 41 | D11A+ — Channel A LVDS data 11 positive (MSB) |
| Pin produk 42 | D11A- — Channel A LVDS data 11 negative (MSB) |
| Pin produk 43 | OR_A+ — Channel A out-of-range positive |
| Pin produk 44 | OR_A- — Channel A out-of-range negative |
| Pin produk 45 | DRVDD — Digital 1.8 V supply |
| Pin produk 46 | D0B+ — Channel B LVDS data 0 positive |
| Pin produk 47 | D0B- — Channel B LVDS data 0 negative |
| Pin produk 48 | D11B+/OR_B+ — Channel B LVDS data 11 or out-of-range positive (mode-dependent) |
| Pin produk 49 | D11B-/OR_B- — Channel B LVDS data 11 or out-of-range negative (mode-dependent) |
| Pin produk 50 | GND — Ground |
| Pin produk 51 | PD — Power-down input (active high) |
| Pin produk 52 | OE — Output enable input (active high) |
| Pin produk 53 | FSR — Full-scale range select |
| Pin produk 54 | GND — Ground |
| Pin produk 55 | AVDD — Analog 3.3 V supply |
| Pin produk 56 | GND — Ground (exposed paddle, bottom of package) |
Aplikasi Umum
ADC1243D250HD-C1 cocok untuk 6 aplikasis: Wireless Base-Station Receiver, Medical Ultrasound Beamforming, Radar and Lidar IF Sampling, Test and Measurement Instrumentation, Software-Defined Radio (SDR), Industrial Process Control.
Wireless Base-Station Receiver
The ADC1243D250HD-C1's 12-bit / 250 MSPS dual sampling and 1.5 GHz analog bandwidth make it ideal for direct-IF sampling in wireless base-station receivers. Each base station typically processes a pair of I and Q IF signals that must be digitized simultaneously; the device's matched dual channels sample on the same LVDS clock edge, eliminating inter-channel skew. Place the I-channel on the I signal path and Q-channel on the Q path with matched trace lengths, and feed the differential analog inputs through a balun-coupler from the mixer IF output. The 67 dBFS SNR supports demodulation of WCDMA, 5G NR, and LTE waveforms with margin for receiver sensitivity targets.
Direkomendasikan
Medical Ultrasound Beamforming
The ADC1243D250HD-C1 is widely used in ultrasound beamforming front-ends, where dozens of channels digitize returning echoes from transducer elements. Its dual-channel simultaneous sampling supports quadrature or paired transducer layouts, while the 250 MSPS sample rate preserves enough bandwidth for high-frequency imaging probes (5-10 MHz IF). The HLQFN-56 package's small footprint enables dense multi-channel PCB arrays typical of phased-array ultrasound probes. Designers should connect the analog inputs through transformer coupling to reject DC offset and common-mode noise from the transducer preamps, and use the internal reference mode to minimize BOM across hundreds of channels per system.
Direkomendasikan
Radar and Lidar IF Sampling
In radar and lidar intermediate-frequency sampling, the ADC1243D250HD-C1's 1.5 GHz analog input bandwidth supports direct undersampling of high IF signals without an external downconverter stage. The dual channels can sample both in-phase and quadrature returns from a single mixer, simplifying receiver BOM cost. The device's typical SFDR of 80 dBc at low IF preserves the dynamic range required to distinguish small targets against clutter, while the LVDS parallel outputs feed directly into Xilinx or Altera FPGAs for real-time FFT processing. Maintain low-jitter clock distribution to the LVDS clock input to preserve the datasheet ENOB figure at high IF.
Direkomendasikan
Test and Measurement Instrumentation
High-speed digitizers and oscilloscope front-ends use the ADC1243D250HD-C1 to capture repetitive or single-shot transients at up to 250 MSPS per channel. Two channels allow simultaneous capture of an input signal and a trigger or reference signal, enabling time-interleaved or differential measurement architectures. The 12-bit resolution provides 4096 quantization levels, suitable for general-purpose lab instrumentation, spectrum analyzer IF digitizers, and protocol analyzers. The internal reference mode simplifies multi-board calibration; the device's exposed-paddle HLQFN-56 package requires a thermal copper pour to dissipate the ~1 W per channel typical operating dissipation in densely populated digitizer cards.
Direkomendasikan
Software-Defined Radio (SDR)
Software-defined radio platforms rely on wideband ADC front-ends to digitize RF or IF signals directly into the FPGA or DSP for digital demodulation. The ADC1243D250HD-C1 supports IF sampling of HF, VHF, and low-UHF bands with its 1.5 GHz analog bandwidth, and the dual channels handle I/Q demodulation in one device, reducing PCB real estate compared to two single-channel parts. The device's 67 dBFS SNR supports demodulation of narrowband signals (CW, SSB, FM) with margin for adjacent-channel rejection. Combine with a low-jitter clock oscillator (e.g., 50 ppb VCXO) and matched-length differential clock traces to preserve dynamic range.
Direkomendasikan
Industrial Process Control
In industrial process control, the ADC1243D250HD-C1 digitizes high-speed sensor signals such as vibration, acoustic emission, and high-speed pressure transducer outputs for predictive maintenance and condition monitoring. Two channels allow simultaneous capture of a sensor signal and a reference or calibration signal. The -40C to +85C industrial temperature range supports deployment in factory automation cells, while the HLQFN-56 package's small footprint fits compact DIN-rail-mountable controller modules. Pair with industrial isolation barriers on the analog input path to meet IEC 61010 measurement category requirements for industrial control.
Direkomendasikan
Ringkasan Produk Direkomendasikan
Data referensi engineering untuk ADC1243D250HD-C1 — pembandingan, panduan desain, dan informasi konformitas.
Panduan Pemilihan
Pembandingan dengan Alternatif
| Parameter Umum | Produk Ini | ADC1243D250HD-C18 | ADC1243D200HD-C1 | ADC1443D250HD-C1 | ADC12D2500RUUT | AD9226ARSZ |
|---|---|---|---|---|---|---|
| Brand | Renesas Electronics (IDT legacy) | Renesas Electronics | Renesas Electronics | Renesas Electronics | Texas Instruments | Analog Devices |
| Package | HLQFN-56 | HLQFN-56 - same | HLQFN-56 - same | HLQFN-56 - same | BGA-114 - different | SSOP-28 - different |
| Resolution | 12 bit | 12 bit | 12 bit | 14 bit | 12 bit | 12 bit |
| Sampling Rate | 250 MSPS | 250 MSPS | 200 MSPS | 250 MSPS | 2500 MSPS | 65 MSPS |
| Channels | 2 | 2 | 2 | 2 | 1 (interleavable to 2) | 1 |
| Input Bandwidth | 1.5 GHz | 1.5 GHz | 1.5 GHz | 1.5 GHz | 2.5 GHz | 750 MHz |
| Output Interface | Parallel LVDS | Parallel LVDS | Parallel LVDS | Parallel LVDS | Parallel LVDS | Parallel CMOS |
| AEC-Q100 Qualified | No | No | No | No | No | No |
Diferensiator Kunci
- Dual 12-bit 250 MSPS simultaneous sampling in a single HLQFN-56 IC (vsAD9226ARSZ)
- 1.5 GHz analog input bandwidth supports direct IF undersampling (vsAD9268XCPZ-125)
- Lower power and cost versus ultra-high-speed single-channel parts (vsADC12D2500RUUT)
Catatan Desain
Treat the analog and digital grounds as separate planes joined at a single point near the exposed paddle of the HLQFN-56 package. Place the input coupling capacitors immediately adjacent to the INA+/INA- and INB+/INB- pins using a small 0402-size ceramic to minimize parasitic inductance. The LVDS clock trace must be routed as a 100-ohm differential pair with matched lengths to both clock pins if the clock is split on the board, and the data output LVDS pairs must be routed with controlled 100-ohm differential impedance and length-matched within the device's skew tolerance.
Do not exceed the absolute maximum AVDD of 3.6 V or DRVDD of 2.0 V. Apply power to AVDD before or simultaneously with DRVDD to avoid latch-up via the LVDS output ESD structures. The internal reference mode requires the REFT and REFB decoupling capacitors (typically 0.1 uF ceramic) placed close to those pads. When driving the analog inputs in single-ended mode, terminate the unused input (INA- or INB-) with a 50-ohm resistor to VCM rather than leaving it floating, which can degrade SFDR.
Estimated: clock jitter of 1 ps RMS degrades SNR by about 4 dB at 50 MHz IF, a 200 MHz AgNO. Use a low-jitter clock source (crystal oscillator or clock distribution IC) with <500 fs RMS jitter to preserve the datasheet SNR figure. Maintain 100-ohm differential impedance on the clock input and data output LVDS pairs, and keep the digital output LVDS pairs separated from analog input traces with a ground guard trace between them. Keep analog input trace lengths matched within 0.5 mm to preserve gain and phase matching between channels.
Estimated: at full sampling rate and both channels enabled, the ADC1243D250HD-C1 dissipates approximately 1 W per channel. The HLQFN-56 package has a bottom-exposed thermal pad that must be soldered to a ground copper pour of at least 1 square inch (6.45 cm^2) to achieve the datasheet theta_JA. For multi-channel digitizer cards, distribute the ADCs across the PCB with adequate spacing and provide airflow or a heatsink if the operating ambient exceeds 60C.
Informasi Konformitas
RoHS and REACH compliant per Renesas product page; not AEC-Q100 qualified - this is a non-Hall product targeted at industrial/communications. Confirm halogen-free status with Renesas for environmental compliance documentation.
