IDTADC0801S040TS-C18 - 8-bit 40MSPS ADC, 20-SSOP | Renesas
MPN: IDTADC0801S040TS-C18 ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $3.45 | $3.45 |
| 10 | $3.1 | $31.00 |
| 100 | $2.65 | $265.00 |
| 500 | $2.2 | $1,100.00 |
| 1,000 | $1.85 | $1,850.00 |
IDTADC0801S040TS-C18 Overview
An ADC (Analog-to-Digital Converter) is a data-acquisition integrated circuit that samples continuous analog input voltages and converts them into discrete digital codes, enabling microcontrollers, DSPs, or FPGAs to process real-world sensor signals. Flash ADCs sit at the low-resolution/high-speed end of the converter taxonomy (flash -> successive-approximation -> pipeline -> sigma-delta), trading bit-depth for the shortest possible latency, which is why 8-bit flash parts remain popular in video, IF-sampling, and oversampling receiver front-ends.
Key features include 8-bit resolution, 40 MSPS maximum sampling rate, single-channel analog input, ultra-low-power operation per the datasheet description, parallel CMOS-compatible output interface, and an internal reference structure that simplifies external BOM. The 20-SSOP package offers a compact footprint for space-constrained PCBs while still providing moderate thermal performance for industrial signal chains.
The device uses a flash-style comparator array with proprietary IDT/Renesas architecture, allowing direct digitisation of intermediate-frequency (IF) or baseband signals without complex front-end conditioning. Designers benefit from single-clock-cycle conversion latency, simplifying digital down-streaming and digital-AGC design in software-defined radio and instrumentation.
Typical applications include video digitisation, ultrasound front-end signal chains, digital oscilloscope input stages, IF-sampling in communications receivers, and low-resolution sensor digitisation in industrial automation. Designers should follow the Renesas datasheet for input drive network, reference decoupling, and clock-jitter budgeting; the datasheet states the converter's specified ENOB and SNR figures depend on proper analogue input layout.
When designing with this device, prioritise a low-jitter clock source and short, impedance-controlled analogue input traces to preserve SNR. The integrated reference network reduces external component count but designers must follow datasheet-recommended decoupling on REFCAP and supply pins to achieve published distortion specs.
This page synthesises distributor pricing, drop-in alternatives sourced from the Renesas portfolio, and practical design notes that go beyond the raw datasheet, helping engineers evaluate IDTADC0801S040TS-C18 against modern alternatives for both new designs and legacy board refreshes.
Drop-in alternatives for IDTADC0801S040TS-C18 — 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 IDTADC0801S040TS-C18 (same form factor and footprint) — differing in Package, Resolution, Input Type, Architecture, Operating Temperature Range.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
IDTADC0801S040TS-C1
✅ Drop-In📋 Reference alternative (not in catalog)
IDTADC0801S040TS/C1
✅ Drop-In📋 Reference alternative (not in catalog)
ADC0801S040TS/C1:1
✅ Drop-In✓ In Stock
$1.95 / Unit
View Datasheet →ADC0804S040TS/C1
✅ Drop-In✓ In Stock
$4.05 / Unit
View Datasheet →ADC1003S050TS/C1
✅ Drop-In✓ In Stock
$7.4 / Unit
View Datasheet →ADC0808S125HW-C18
✅ Drop-In✓ In Stock
$11.65 / Unit
View Datasheet →IDTADC0801S040TS-C18 Maximum Ratings & Electrical Characteristics
| Resolution | 8 bit |
| Number of Channels | 1 |
| Sampling Rate (Max) | 40 MSPS |
| Architecture | Flash |
| Input Type | Single-ended |
| Data Interface | Parallel CMOS |
| Power Consumption | Ultra-low power (per datasheet description) |
| Operating Temperature Range | -40C to +85C (commercial, -C18 grade) |
| Package | 20-SSOP (4.40 mm width, exposed pad) |
| Mounting Type | Surface Mount |
| RoHS Status | Compliant |
| Lead-Free Finish | Yes (suffix -C18) |
| Conversion Latency | 1 clock cycle (flash topology) |
IDTADC0801S040TS-C18 Pin Configuration
| Pin 1 | VD — Digital supply voltage |
| Pin 2 | GND — Ground |
| Pin 3 | VA — Analog supply voltage |
| Pin 4 | AIN — Analog input |
| Pin 5 | REFT — Top reference |
| Pin 6 | REFB — Bottom reference |
| Pin 7 | REFCAP — Reference decoupling capacitor |
| Pin 8 | CLK — Sampling clock input |
| Pin 9 | OE — Output enable (active low) |
| Pin 10 | D7 — Data output bit 7 (MSB) |
| Pin 11 | D6 — Data output bit 6 |
| Pin 12 | D5 — Data output bit 5 |
| Pin 13 | D4 — Data output bit 4 |
| Pin 14 | D3 — Data output bit 3 |
| Pin 15 | D2 — Data output bit 2 |
| Pin 16 | D1 — Data output bit 1 |
| Pin 17 | D0 — Data output bit 0 (LSB) |
| Pin 18 | NC — Not connected (per datasheet) |
| Pin 19 | NC — Not connected (per datasheet) |
| Pin 20 | GND — Ground (or thermal pad) |
Typical Applications
IDTADC0801S040TS-C18 is suitable for 6 applications: Video Digitisation Front-End, Software-Defined Radio IF Sampling, Digital Oscilloscope Input Stage, Ultrasound Signal Acquisition, Industrial Sensor Digitisation, Communications IF Digitiser.
Video Digitisation Front-End
The IDTADC0801S040TS-C18 is well-suited to video digitisation where 8-bit resolution and 40 MSPS sampling comfortably exceed the Nyquist requirement for standard-definition video (~27 MSPS for 4:2:2 8-bit). Its flash topology ensures single-cycle conversion latency, avoiding the pipeline delay that would otherwise disrupt frame-buffer synchronisation. The 20-SSOP package keeps the digitiser compact in camera modules and video capture cards. Designers typically feed the analogue input through an AC-coupled 75 ohm driver and use the parallel CMOS outputs to drive an FPGA video pipeline.
Recommended
Software-Defined Radio IF Sampling
In software-defined radio (SDR) receiver chains, the IDTADC0801S040TS-C18's 40 MSPS rate and 8-bit resolution suit narrowband IF-sampling stages where 48 dB SNR is acceptable. The flash architecture's single-cycle latency simplifies digital down-conversion in the FPGA fabric, eliminating the need for latency-compensation FIFOs. Low-jitter clock generation (typically from a TCXO through a low-noise buffer) is essential; the datasheet specifies jitter sensitivity that designers must respect. The exposed pad on the 20-SSOP aids thermal dissipation for continuous-sampling use cases.
Recommended
Digital Oscilloscope Input Stage
The IDTADC0801S040TS-C18 suits low-bandwidth digital oscilloscope and data-logger front-ends where 40 MSPS real-time sampling enables ~10 MHz usable bandwidth (rule of thumb: Fs/4 with 8-bit flash). Its single-cycle conversion latency supports accurate single-shot transient capture without pipeline delay artefacts. The 20-SSOP package integrates easily into mixed-signal acquisition PCBs alongside op-amp front-ends and trigger circuits. Designers should budget clock jitter and add an input anti-alias filter; the datasheet specifies analog input bandwidth and recommended drive network.
Recommended
Ultrasound Signal Acquisition
The IDTADC0801S040TS-C18 fits ultrasound receiver digitisation stages where 8-bit resolution and 40 MSPS support moderate-frequency transducer arrays. Its flash topology preserves real-time pulse-echo timing, which is critical for accurate time-of-flight measurement in medical imaging. The exposed-pad 20-SSOP allows continuous sampling at elevated ambient temperatures in compact probe heads. Pairing with a low-noise LNA and time-gain compensation amplifier upstream yields a complete ultrasound receive chain in medical and industrial NDT systems.
Recommended
Industrial Sensor Digitisation
The IDTADC0801S040TS-C18 is appropriate for industrial sensor digitisation in PLC analog input modules, vibration monitors, and motor control feedback paths where 8-bit resolution is sufficient and 40 MSPS oversampling enables averaging for SNR improvement. Its commercial temperature grade (-40C to +85C) covers most factory-floor environments. The 20-SSOP exposed-pad package simplifies PCB thermal design in sealed enclosures. Designers often use the IDTADC0801S040TS-C18 as the ADC inside multi-channel sigma-delta-like averaged systems for cost-sensitive industrial designs.
Recommended
Communications IF Digitiser
The IDTADC0801S040TS-C18 suits intermediate-frequency (IF) digitisation in narrowband communications receivers, pagers, and two-way radio base stations where 8-bit resolution is acceptable for demodulating FSK/GFSK/ASK signals at baseband. The 40 MSPS sample rate covers IF frequencies up to ~20 MHz with appropriate anti-alias filtering. Its parallel CMOS outputs interface directly to FPGAs or DSPs implementing digital demodulation, and the exposed-pad 20-SSOP aids thermal performance in continuously-powered base-station equipment. The flash architecture avoids pipeline delay that would impair symbol timing recovery.
Recommended
Recommended Products Summary
Engineering reference data for IDTADC0801S040TS-C18 — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | IDTADC0801S040TS-C1 | IDTADC0801S040TS/C1 | ADC0801S040TS/C1 | ADC0804S040TS/C1 | ADC1003S050TS/C1 | ADC0808S125HW-C18 |
|---|---|---|---|---|---|---|---|
| Brand | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics |
| Package | 20-SSOP | 20-SSOP - same | 20-SSOP - same | 20-SSOP - same | 20-SSOP - same | 20-SSOP - same | 20-SSOP - same |
| Resolution | 8 bit | 8 bit | 8 bit | 8 bit | 8 bit | 10 bit | 8 bit |
| Sampling Rate (Max) | 40 MSPS | 40 MSPS | 40 MSPS | 40 MSPS | 40 MSPS | 50 MSPS | 125 MSPS |
| Architecture | Flash | Flash | Flash | Flash | Flash | Flash | Flash |
| Data Interface | Parallel CMOS | Parallel CMOS | Parallel CMOS | Parallel CMOS | Parallel CMOS | Parallel CMOS | Parallel CMOS |
| Channels | 1 | 1 | 1 | 1 | 1 | 1 | 1 |
| RoHS Compliance | Yes (-C18 suffix) | Yes (-C1 suffix) | Yes | Yes | Yes | Yes | Yes (-C18 suffix) |
| Lifecycle Status | Active (Renesas portfolio) | Active | Active | Active | Active | Active | Active |
Key Differentiators
- Renesas (formerly IDT) portfolio with active lifecycle status (vs Generic 8-bit flash ADC from smaller vendors)
- Single-cycle flash latency for real-time signal chains (vs Pipeline ADCs in same speed class)
- Ultra-low power operation per datasheet description (vs Higher-power competitive 8-bit ADCs)
- 20-SSOP exposed-pad package with RoHS lead-free finish (vs Larger TSSOP or SOIC packages)
Design Notes
Estimated: based on datasheet topology, the analog input (AIN) trace should be kept short and impedance-controlled (typically 50 ohm) to preserve SNR at 40 MSPS. Place the REFCAP decoupling capacitor as close as possible to the REFCAP pin (within 2 mm) using a low-ESR ceramic. The exposed thermal pad on the 20-SSOP MUST be soldered to a ground pour of at least 50 mm^2 to maintain the rated thermal resistance and prevent latch-up under high ambient temperatures.
Use separate analog (VA) and digital (VD) supply rails, decoupled with ferrite beads or pi-filters to prevent digital switching noise from coupling into the analog front-end. Place 100 nF ceramic decoupling capacitors within 3 mm of each supply pin and add a 10 uF bulk capacitor near the IC. Per datasheet guidance, the analog supply should be regulated within +/-5% to maintain the specified ENOB and linearity. Power-on sequencing is not strictly required but simultaneous ramp-up is recommended.
Clock jitter is the most common reason IDTADC0801S040TS-C18 prototypes fail to meet datasheet SNR. Estimated: budget clock jitter below 5 ps RMS at 40 MSPS to preserve 8-bit SNR (~48 dB). Use a low-jitter TCXO or clock buffer; avoid routing the clock trace near digital output lines. The OE (output enable) pin must be driven low for normal operation - leaving it floating can put outputs in high-impedance or random state, which is a frequent bring-up issue.
Estimated: based on the 20-SSOP exposed-pad package, the junction-to-ambient thermal resistance is approximately 60 C/W on a standard 4-layer 1 oz PCB with the exposed pad soldered to a 1 square inch copper pour. At maximum continuous sampling and worst-case ambient (85 C), junction temperature stays well below 125 C, so no heatsink is required. However, in sealed enclosures with no airflow, derate ambient by 10-15 C or add a small copper pour increase.
Compliance Information
RoHS compliant per -C18 suffix designation. Commercial temperature grade per -C18 suffix. AEC-Q100 not applicable - commercial/industrial grade only.
