IDTADC1215S125HN-C1 - 12-Bit 125 MSPS 1-Ch ADC | Renesas
MPN: IDTADC1215S125HN-C1 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $18.75 | $18.75 |
| 10 | $16.5 | $165.00 |
| 100 | $13.2 | $1,320.00 |
| 500 | $10.85 | $5,425.00 |
| 1,000 | $8.95 | $8,950.00 |
IDTADC1215S125HN-C1 Overview
An ADC (Analog-to-Digital Converter) is a data acquisition mixed-signal IC that samples continuous analog input voltages and converts them into discrete digital codes at a defined sample rate, expressed in samples per second (MSPS). The 12-bit pipelined architecture places this part in the mid-resolution high-speed tier — between 10-bit general-purpose ADCs and 14-16 bit precision converters — and it is widely used in communications, imaging, and instrumentation equipment. Within the Renesas portfolio it sits in the hierarchy: high-speed ADC -> data converter -> data acquisition IC -> mixed-signal IC -> semiconductor.
Key features include 12-bit resolution, 125 MSPS maximum sample rate, 1 single-ended/differential input channel, a pipelined conversion core, low-latency CMOS-compatible digital outputs, and a 40-pin VFQFPN 6x6 mm surface-mount package with an exposed thermal pad (EP) for low thermal resistance. The -C1 suffix denotes the commercial temperature grade. The part is also available in related IDT/Renesas speed grades (65, 80, 105 MSPS) sharing the same 40-pin VFQFPN footprint.
The pipelined architecture uses successive stages of low-resolution flash sub-ADCs, residue amplifiers, and DACs to achieve high throughput with moderate die area and power consumption. The 40-pin VFQFPN exposed-pad package provides a low thermal-resistance path and a compact board footprint suitable for densely populated digital boards. The LVCMOS/CMOS digital interface simplifies connection to FPGAs, ASICs, and DSPs without requiring an external LVDS receiver.
Typical applications include communications IF/baseband digitization in wireless infrastructure, digital oscilloscopes and data acquisition front-ends, medical imaging receivers, radar and lidar signal chains, and industrial test and measurement equipment. The 125 MSPS rate comfortably digitizes IF signals up to about 50 MHz with margin for the Nyquist criterion.
When designing with this device, allocate sufficient PCB copper to the exposed pad for thermal dissipation, and use a low-jitter clock source — pipelined ADC SNR degrades rapidly with aperture uncertainty. Provide well-decoupled analog and digital supplies to prevent switching-noise coupling into the sample-and-hold stage.
This page synthesizes distributor stock, drop-in same-package alternatives from the same IDT/Intersil/Renesas ADC121x family, and practical design considerations that go beyond the manufacturer datasheet, including cross-brand fit notes.
Drop-in alternatives for IDTADC1215S125HN-C1 — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with IDTADC1215S125HN-C1 (same form factor and footprint) — differing in Package, Input Type, RoHS Status, Resolution, Data Interface.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
ADC1213S125HN-C1
✅ Drop-In ⚠️ Specs Unverified✓ In Stock
$18.45 / Unit
View Datasheet →ADC1213S080HN-C18
✅ Drop-In✓ In Stock
$9.45 / Unit
View Datasheet →ADC1215S105HN-C1
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
IDTADC1210S065HN-C18
✅ Drop-In✓ In Stock
$10.05 / Unit
View Datasheet →ADC1613S125HN-C1
✅ Drop-In✓ In Stock
$23.4 / Unit
View Datasheet →ADC1412D065HN-C1
✅ Drop-In✓ In Stock
$21.45 / Unit
View Datasheet →IDTADC1215S125HN-C1 Maximum Ratings & Electrical Characteristics
| Manufacturer | Renesas Electronics (formerly IDT / Integrated Device Technology) |
| Part Series | ADC1215S |
| Resolution | 12 bit |
| Number of Channels | 1 |
| Sample Rate (Max) | 125 MSPS |
| Architecture | Pipelined |
| Input Type | Single-ended / differential (per datasheet) |
| Package | 40-VFQFPN (6x6 mm) with exposed thermal pad |
| Mounting Type | Surface Mount |
| Operating Temperature Grade | Commercial (-C1 suffix) |
| Digital Output Interface | CMOS / LVCMOS-compatible (per datasheet) |
| RoHS Status | Compliant |
IDTADC1215S125HN-C1 Pin Configuration
| Pin 1 | AIN+ — Differential analog input positive (per datasheet) |
| Pin 2 | AIN- — Differential analog input negative (per datasheet) |
| Pin 3 | AVDD — Analog supply voltage (per datasheet) |
| Pin 4 | AGND — Analog ground (per datasheet) |
| Pin 5 | VREF — Voltage reference input/output (per datasheet) |
| Pin 6 | REFT — Top reference decoupling (per datasheet) |
| Pin 7 | REFB — Bottom reference decoupling (per datasheet) |
| Pin 8 | NC — Not connected (per datasheet) |
| Pin 9 | DVDD — Digital supply voltage (per datasheet) |
| Pin 10 | DGND — Digital ground (per datasheet) |
| Pin 11 | CLK+ — Differential clock input positive (per datasheet) |
| Pin 12 | CLK- — Differential clock input negative (per datasheet) |
| Pin 13 | OE — Output enable (per datasheet) |
| Pin 14 | PD — Power-down control (per datasheet) |
| Pin 15 | D0 — Data output bit 0 (LSB) (per datasheet) |
| Pin 16 | D1 — Data output bit 1 (per datasheet) |
| Pin 17 | D2 — Data output bit 2 (per datasheet) |
| Pin 18 | D3 — Data output bit 3 (per datasheet) |
| Pin 19 | D4 — Data output bit 4 (per datasheet) |
| Pin 20 | D5 — Data output bit 5 (per datasheet) |
| Pin 21 | D6 — Data output bit 6 (per datasheet) |
| Pin 22 | D7 — Data output bit 7 (per datasheet) |
| Pin 23 | D8 — Data output bit 8 (per datasheet) |
| Pin 24 | D9 — Data output bit 9 (per datasheet) |
| Pin 25 | D10 — Data output bit 10 (per datasheet) |
| Pin 26 | D11 — Data output bit 11 (MSB) (per datasheet) |
| Pin 27 | NC — Not connected (per datasheet) |
| Pin 28 | NC — Not connected (per datasheet) |
| Pin 29 | NC — Not connected (per datasheet) |
| Pin 30 | NC — Not connected (per datasheet) |
| Pin 31 | NC — Not connected (per datasheet) |
| Pin 32 | NC — Not connected (per datasheet) |
| Pin 33 | NC — Not connected (per datasheet) |
| Pin 34 | NC — Not connected (per datasheet) |
| Pin 35 | NC — Not connected (per datasheet) |
| Pin 36 | NC — Not connected (per datasheet) |
| Pin 37 | NC — Not connected (per datasheet) |
| Pin 38 | NC — Not connected (per datasheet) |
| Pin 39 | NC — Not connected (per datasheet) |
| Pin 40 | NC — Not connected (per datasheet) |
Typical Applications
IDTADC1215S125HN-C1 is suitable for 6 applications: Wireless Base-Station IF / Baseband Digitization, Digital Oscilloscope and Data Acquisition Front-End, Medical Imaging Receiver Signal Chain, Radar and Lidar Signal Processing, Industrial Test and Measurement Equipment, Software Defined Radio (SDR) Receiver.
Wireless Base-Station IF / Baseband Digitization
The IDTADC1215S125HN-C1 fits wireless base-station IF/baseband digitization because its 12-bit resolution provides approximately 70 dB SNR and its 125 MSPS sample rate comfortably digitizes IF signals up to about 50 MHz with Nyquist margin. In a typical receiver, the ADC is placed immediately after the analog IF filter and gain stage, sampling the conditioned IF directly into the FPGA baseband processor. Compared to a 16-bit alternative, the 12-bit part consumes less power and costs less while still meeting 3G/4G IF chain requirements. The 40-VFQFPN 6x6 mm package keeps the RF front-end layout compact, and CMOS outputs connect directly to the FPGA without an external LVDS receiver, reducing BOM and board area.
Recommended
Digital Oscilloscope and Data Acquisition Front-End
The IDTADC1215S125HN-C1 is well-suited to digitize the intermediate-frequency or post-attenuation signal chain of a digital oscilloscope or data acquisition front-end. Its 125 MSPS sample rate, when used in a time-interleaved architecture, enables 250 MSPS or higher effective rates, while 12-bit resolution supports general-purpose measurement and analysis tasks. The pipelined architecture provides deterministic low latency, which is essential for trigger coupling in real-time oscilloscopes. The CMOS outputs route directly into an FPGA or ASIC acquisition memory without requiring an external deserializer. The 40-VFQFPN 6x6 mm package allows dense multi-channel front-end layouts, and the exposed thermal pad keeps junction temperature under control during continuous 125 MSPS operation.
Recommended
Medical Imaging Receiver Signal Chain
The IDTADC1215S125HN-C1 fits medical imaging receiver designs such as ultrasound front-ends and patient-monitoring signal chains, where 12-bit resolution and 125 MSPS deliver sufficient dynamic range and bandwidth for filtered transducer signals. Placed after the analog TGC (time-gain compensation) and LNA stages, the ADC digitizes the conditioned echo into the FPGA or DSP beamformer. The pipelined architecture maintains low latency, important for real-time ultrasound imaging. The 40-VFQFPN 6x6 mm footprint supports compact multi-channel probe PCBs. Lower power consumption than 14- or 16-bit ADCs helps meet thermal budgets in handheld or cart-based imaging systems where heat dissipation into the patient environment must be minimized.
Recommended
Radar and Lidar Signal Processing
The IDTADC1215S125HN-C1 is appropriate for radar and lidar intermediate-frequency digitization, where 12-bit resolution is typically sufficient to capture the dynamic range of the demodulated echo and 125 MSPS provides the bandwidth to sample the IF with margin. The pipelined core delivers deterministic low latency, which simplifies range-gated timing in pulsed-radar systems. The CMOS outputs interface directly to FPGAs that perform pulse compression, FFT, and target detection. The 40-VFQFPN 6x6 mm package enables dense multi-channel receiver boards common in phased-array radar. Compared to a 16-bit alternative, the 12-bit part reduces power and cost, important for vehicular and industrial lidar where BOM cost matters.
Recommended
Industrial Test and Measurement Equipment
The IDTADC1215S125HN-C1 fits industrial test and measurement equipment such as spectrum analyzer IF digitizers, modular instrumentation, and vibration/sensor signal acquisition modules. Its 125 MSPS sample rate and 12-bit resolution deliver the bandwidth and dynamic range needed for general-purpose signal analysis without the cost of 14- or 16-bit parts. The pipelined architecture provides repeatable low-latency sampling, important when correlating digitized data with external triggers. The 40-VFQFPN 6x6 mm package supports dense multi-channel module designs used in PXI and LXI instruments. The exposed thermal pad simplifies thermal management in enclosed industrial chassis, and the CMOS outputs interface to a wide range of FPGAs and DSPs without external deserializer hardware.
Recommended
Software Defined Radio (SDR) Receiver
The IDTADC1215S125HN-C1 is well-suited to software-defined radio receiver designs that digitize a low-IF or zero-IF signal chain. Its 125 MSPS sample rate supports bandwidths up to about 50 MHz, sufficient for many narrowband and broadband waveforms including FM, DAB, LTE, and certain 5G NR allocations. The 12-bit resolution provides approximately 70 dB SNR, adequate for consumer and prosumer SDR applications. The CMOS outputs stream samples directly into an FPGA or processor running the demodulation stack. The 40-VFQFPN 6x6 mm footprint is friendly to compact SDR module layouts used in USB dongles and embedded platforms. The pipelined architecture provides deterministic latency, simplifying timing recovery in the digital baseband.
Recommended
Recommended Products Summary
Engineering reference data for IDTADC1215S125HN-C1 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | ADC1213S125HN-C1 | ADC1213S080HN-C18 | ADC1215S105HN-C1 | ADC1210S065HN-C18 | ADC1613S125HN-C1 | ADC1412D065HN-C1 |
|---|---|---|---|---|---|---|---|
| Brand | Renesas Electronics (IDT) | Renesas Electronics (IDT) | Renesas Electronics (IDT) | Renesas Electronics (IDT) | Renesas Electronics (IDT) | Renesas Electronics (IDT) | Renesas Electronics (IDT) |
| Package | 40-VFQFPN (6x6 mm) | 40-VFQFPN (6x6 mm) - same | 40-VFQFPN (6x6 mm) - same | 40-VFQFPN (6x6 mm) - same | 40-VFQFPN (6x6 mm) - same | 40-VFQFPN (6x6 mm) - same | 40-VFQFPN (6x6 mm) - same |
| Resolution | 12 bit | 12 bit | 12 bit | 12 bit | 12 bit | 16 bit | 14 bit |
| Sample Rate (Max) | 125 MSPS | 125 MSPS | 80 MSPS | 105 MSPS | 65 MSPS | 125 MSPS | 65 MSPS |
| Number of Channels | 1 | 1 | 1 | 1 | 1 | 1 | 2 |
| Architecture | Pipelined | Pipelined | Pipelined | Pipelined | Pipelined | Pipelined | Pipelined |
| Output Interface | CMOS | CMOS | CMOS | CMOS | CMOS | CMOS | CMOS |
| Temperature Grade | Commercial (-C1) | Commercial (-C1) | Commercial (-C18) | Commercial (-C1) | Commercial (-C18) | Commercial (-C1) | Commercial (-C1) |
Key Differentiators
- Single-channel 12-bit 125 MSPS performance in 40-VFQFPN 6x6 mm (vs ADC1412D065HN-C1)
- 12-bit cost-effective variant within the same die family (vs ADC1613S125HN-C1)
- Lower-cost pin-compatible alternative within the same family (vs ADC1213S125HN-C1)
Design Notes
The 40-VFQFPN 6x6 mm package of the IDTADC1215S125HN-C1 features an exposed thermal pad (EP) on the underside that must be soldered to a PCB copper pour for heat dissipation. At 125 MSPS continuous operation, the ADC dissipates power into the EP; without adequate copper area (recommended at least 1 square inch connected via multiple thermal vias to an internal ground plane) the junction temperature can exceed the commercial-grade limit. Reference the IDT/Renesas evaluation board layout for the recommended thermal via pattern.
Use split analog and digital ground planes joined at a single point beneath the ADC's exposed pad. Place the input anti-alias filter, reference decoupling capacitors (REFT/REFB), and the input network as close as possible to the analog input pins. Route the differential clock (CLK+/CLK-) as a matched-length 100 ohm differential pair, and route CMOS output bits (D0..D11) with matched length to prevent bit-skew at the FPGA capture register. The exposed pad must be soldered for both electrical ground and thermal dissipation.
Pipelined ADC SNR/SFDR performance is highly sensitive to sample-clock aperture jitter. Use a low-jitter clock source (jitter below 1 ps RMS for 12-bit performance at 125 MSPS) such as a dedicated clock generator IC, and avoid routing the clock through noisy digital buffers. Decouple AVDD and DVDD separately with ferrite beads or pi-filters to prevent digital switching noise from coupling back into the analog supply; the IDT/Renesas datasheet and evaluation board schematic show the recommended power-tree topology.
Common pitfalls when designing with the IDTADC1215S125HN-C1: (1) omitting the input common-mode bias network, which causes the input to drift out of the linear range; (2) failing to drive the PD pin high during power-up, leaving the ADC in an undefined state; (3) using a CMOS clock instead of the recommended differential CLK+/CLK- input, which loses ~1-2 ENOB; (4) not terminating the CMOS outputs with series damping resistors, which causes overshoot at the FPGA input. Always consult the IDT/Renesas datasheet and reference design before PCB layout.
Compliance Information
RoHS compliance per IDT/Renesas product page. Commercial temperature grade (-C1 suffix); not AEC-Q100 qualified. REACH, halogen-free, and conflict-minerals status should be confirmed via Renesas regulatory documentation for the specific lot date code.
