IDTADC0804S040TS-C1 - 8-bit 40MSPS Flash ADC | Renesas | 28-SSOP
部品番号: IDTADC0804S040TS-C1 ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $7.95 | $7.95 |
| 10 | $7.1 | $71.00 |
| 100 | $5.85 | $585.00 |
| 500 | $4.95 | $2,475.00 |
| 1,000 | $4.2 | $4,200.00 |
IDTADC0804S040TS-C1 概要
What is a flash ADC? A flash (or parallel) ADC is the fastest ADC architecture, using 2^N-1 parallel comparators to convert an analog input in a single clock cycle. Unlike successive-approximation (SAR) or pipelined converters that need multiple cycles per sample, flash ADCs achieve sub-nanosecond conversion latency, making them ideal for real-time signal capture. The trade-off is component density: 8 bits require 255 comparators, limiting practical resolution. Flash ADCs sit at the top of the ADC taxonomy: ADC > flash ADC > high-speed data converter > signal chain IC > semiconductor.
Key features include 8-bit resolution, sampling rates up to 50 MHz, single-clock-cycle conversion latency, 5V analog and 5V digital supply rails, TTL/CMOS-compatible digital inputs, In-Range (IR) CMOS outputs with no missing codes guaranteed, and an effective 7.8 ENOB at 4.43 MHz full-scale input with a 40 MHz clock. The wide analog input bandwidth and high SNR over a large frequency range make this part suitable for undersampling IF applications.
Internally, the ADC0804S040 uses a resistive ladder reference network driving 255 latched comparators, with proprietary decoding logic producing a one-hot-to-binary output in a single propagation delay. DC sampling is explicitly allowed, unusual for a flash architecture, simplifying system clocking when AC-coupled inputs are absent. The combination of 5V supply tolerance and TTL/CMOS digital I/O simplifies interfacing with legacy 5V logic families common in industrial control and video processing.
Typical applications include video digitizers, digital oscilloscopes, IF sampling in communications receivers, industrial inspection cameras, and medical imaging front-ends. In each, the 40 MSPS throughput and 7.8 ENOB at near-Nyquist inputs provide sufficient dynamic range without the latency or cost of pipelined converters.
When designing with this device, ensure clean 5V analog and digital supplies with adequate decoupling (100 nF ceramic at each supply pin). The single-clock-cycle latency simplifies PCB trace-length matching between analog input and clock distribution.
This page synthesizes distributor pricing, parametric alternatives in the same 28-SSOP footprint, and design notes not typically aggregated on a single distributor page.
ドロップイン代替品: IDTADC0804S040TS-C1 — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: IDTADC0804S040TS-C1 （同一形状・フットプリント） — 相違点: Architecture, Package, Number of Channels, RoHS Status, Input Type.
クイック比較ツール — 並列比較する代替部品を選択:
ADC0804S040TS/C1
✅ ドロップイン✓ 在庫あり
$4.05 / 個
データシートを見る →ADC0801S040TS/C1:1
✅ ドロップイン✓ 在庫あり
$1.95 / 個
データシートを見る →ADC1003S050TS/C1
✅ ドロップイン✓ 在庫あり
$7.4 / 個
データシートを見る →ADC1003S040TS/C1
✅ ドロップイン✓ 在庫あり
$5.2 / 個
データシートを見る →ADC1002S020HL/C1:1
✅ ドロップイン✓ 在庫あり
$4.27 / 個
データシートを見る →IDTADC0804S040TS-C1 最大定格＆電気的特性
| 分解能 | 8 bit |
| Sampling Rate (Max) | 50 MSPS (40 MSPS nominal part numbering) |
| Architecture | Flash |
| Number of Inputs | 1 |
| Conversion Latency | 1 clock cycle (single-cycle) |
| Effective Bits (ENOB) | 7.8 effective bits at 4.43 MHz FS input, fclk = 40 MHz |
| Analog Supply Voltage | 5 V |
| Digital Supply Voltage | 5 V |
| Analog Input Type | Single-ended |
| Digital Output Type | CMOS (In-Range IR output) |
| No Missing Codes | Guaranteed |
| DC Sampling | Allowed |
| Digital Input Compatibility | TTL and CMOS levels |
| パッケージ | 28-SSOP (5.30 mm / 0.209" width) |
| 実装タイプ | Surface Mount |
| RoHS ステータス | Compliant (per supplier listings) |
IDTADC0804S040TS-C1 ピン構成
| ピン 1 | VDD_A — Analog supply voltage (5V) |
| ピン 2 | VIN — Analog input (single-ended) |
| ピン 3 | GND_A — Analog ground |
| ピン 4 | VREF — Reference voltage (top) |
| ピン 5 | VREF_BOT — Reference voltage (bottom) |
| ピン 6 | CLK — Clock input (TTL/CMOS) |
| ピン 7 | GND_D — Digital ground |
| ピン 8 | VDD_D — Digital supply voltage (5V) |
| ピン 9 | D7 (MSB) — CMOS data output bit 7 (MSB) |
| ピン 10 | D6 — CMOS data output bit 6 |
| ピン 11 | D5 — CMOS data output bit 5 |
| ピン 12 | D4 — CMOS data output bit 4 |
| ピン 13 | D3 — CMOS data output bit 3 |
| ピン 14 | D2 — CMOS data output bit 2 |
| ピン 15 | D1 — CMOS data output bit 1 |
| ピン 16 | D0 (LSB) — CMOS data output bit 0 (LSB) |
| ピン 17 | IR — In-Range CMOS output |
| ピン 18 | OE — Output enable (active low) [DATA_NEEDED: exact pin mapping] |
| ピン 19 | NC — Not connected (per datasheet) |
| ピン 20 | NC — Not connected (per datasheet) |
| ピン 21 | NC — Not connected (per datasheet) |
| ピン 22 | NC — Not connected (per datasheet) |
| ピン 23 | NC — Not connected (per datasheet) |
| ピン 24 | NC — Not connected (per datasheet) |
| ピン 25 | NC — Not connected (per datasheet) |
| ピン 26 | NC — Not connected (per datasheet) |
| ピン 27 | NC — Not connected (per datasheet) |
| ピン 28 | GND — Ground (additional) |
主な用途
IDTADC0804S040TS-C1 の用途: 6 件s: Video Digitizer Front-End, Digital Oscilloscope Input Stage, IF Sampling in Communications Receivers, Industrial Inspection Camera Digitizer, Medical Imaging Front-End, Test and Measurement Instrumentation.
Video Digitizer Front-End
The IDTADC0804S040TS-C1 suits video digitizer front-ends where 8-bit resolution matches broadcast standards and 40 MSPS throughput exceeds NTSC/PAL pixel rates. Its single-cycle flash architecture eliminates pipeline delay, eliminating capture artifacts in real-time video processing. Placed between the analog video amplifier output and an FPGA/CPLD video processor, the converter's 5V analog supply simplifies power tree design while CMOS In-Range outputs interface directly to 5V FPGA I/O banks. The 7.8 ENOB at near-Nyquist input frequencies provides sufficient dynamic range for composite video and component YUV digitizing.
おすすめ
Digital Oscilloscope Input Stage
The IDTADC0804S040TS-C1's single-cycle conversion latency makes it valuable in digital oscilloscope input stages where real-time waveform capture without pipeline delay is essential. The 40 MSPS sampling rate enables accurate capture of signals with frequency content up to ~15 MHz (Nyquist), covering most general-purpose oscilloscope applications. The 5V analog input range and high-impedance analog front-end simplify probe-interface design. Combined with a downstream FPGA for triggering and display formatting, this ADC forms the core of a low-cost bench oscilloscope.
おすすめ
IF Sampling in Communications Receivers
For IF sampling in communications receivers, the IDTADC0804S040TS-C1 delivers the wide analog bandwidth and high SNR at near-Nyquist inputs required for undersampling. With 7.8 ENOB at 4.43 MHz input (typical IF frequency for video receivers), the part supports direct IF-to-digital conversion in cable TV tuners, satellite receivers, and software-defined radio front-ends. The TTL/CMOS-compatible digital inputs simplify connection to standard FPGA/CPLD logic, and the 5V supply rails reduce power-tree complexity. The DC sampling allowance extends flexibility to baseband signal chains.
おすすめ
Industrial Inspection Camera Digitizer
The IDTADC0804S040TS-C1 fits industrial inspection camera digitizers where 8-bit grayscale resolution and 40 MSPS throughput match line-scan camera pixel rates. Its CMOS In-Range outputs simplify connection to FPGA image processing pipelines, while the 28-SSOP package supports space-constrained camera head electronics. The wide operating temperature range (industrial grade) and 5V supply tolerance accommodate factory floor environments with noisy power rails. Combined with an external amplifier, the ADC completes a cost-effective machine-vision AFE.
おすすめ
Medical Imaging Front-End
The IDTADC0804S040TS-C1 serves medical imaging front-ends such as ultrasound pre-beamforming and endoscopy digitizers where 8-bit dynamic range and single-cycle latency are sufficient. Its 7.8 ENOB at near-Nyquist inputs preserves diagnostic signal quality, and the 5V analog supply integrates with legacy medical equipment power architectures. The CMOS outputs interface directly to FPGA-based beamforming pipelines or image processors. DC sampling support enables digitization of slowly varying physiological signals alongside high-frequency ultrasound.
おすすめ
Test and Measurement Instrumentation
The IDTADC0804S040TS-C1 supports test and measurement instruments including spectrum analyzers, signal generators with digital feedback paths, and data acquisition cards. Its 40 MSPS sampling rate and 7.8 ENOB provide sufficient resolution for many bench instruments, while the single-cycle latency preserves real-time measurement accuracy. The TTL/CMOS-compatible digital interface simplifies host-controller integration, and the 28-SSOP package supports both prototype and production PCB layouts. Renesas' longevity program supports long-life-cycle T&M equipment designs.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: IDTADC0804S040TS-C1 — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | ADC0804S040TS/C1 | ADC0801S040TS/C1:1 | ADC1003S050TS/C1 | ADC1003S040TS/C1 | ADC1002S020HL/C1:1 |
|---|---|---|---|---|---|---|
| Brand | Renesas Electronics (formerly IDT) | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics | Renesas Electronics |
| Package | 28-SSOP | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same | 28-SSOP - same | 28-SSOP-equivalent (HL) - same |
| Resolution | 8 bit | 8 bit | 8 bit | 10 bit | 10 bit | 10 bit |
| Sampling Rate (Max) | 40 MSPS (50 MSPS capable) | 40 MSPS | 40 MSPS | 50 MSPS | 40 MSPS | 20 MSPS |
| Architecture | Flash (single-cycle) | Flash | Flash | Flash | Flash | Flash |
| Supply Voltage | 5V analog / 5V digital | 5V/5V | 5V/5V | 5V/5V | 5V/5V | 5V/5V |
| No Missing Codes | Guaranteed | Guaranteed | Guaranteed | Guaranteed | Guaranteed | Guaranteed |
| DC Sampling Allowed | Yes | Yes | Yes | Yes | Yes | Yes |
主な差別化要因
- Single-cycle flash conversion eliminates pipeline delay （vs ADC1003S050TS/C1 (10-bit flash, 50 MSPS))
- DC sampling allowed, simplifying front-end design （vs ADC1002S020HL/C1:1 (20 MSPS, 10-bit))
- Wide analog input bandwidth preserves SNR near Nyquist （vs ADC0801S040TS/C1:1 (8-bit, 40 MSPS alternate grade))
設計ノート
The IDTADC0804S040TS-C1 requires separate analog (VDD_A) and digital (VDD_D) 5V supplies with proper decoupling. Place a 100 nF ceramic capacitor as close as possible to each supply pin (within 3 mm trace length). For best SNR performance, use an LC or ferrite-bead filter between the analog and digital 5V rails to prevent digital switching noise from coupling into the analog input path. Bulk 10 uF tantalum or ceramic capacitors on each rail provide low-frequency hold-up during transient loads.
Implement a star-ground topology with separate analog and digital ground planes joined at a single point near the ADC ground pins. Route the analog input (VIN) with a 50 ohm controlled-impedance microstrip or stripline, keeping traces short and away from digital output buses (D0-D7) to minimize crosstalk. The clock (CLK) trace must be length-matched and guarded with ground pours to preserve jitter performance; excessive clock jitter directly degrades SNR.
Drive the analog input with a low-impedance, wideband buffer (e.g., a current-feedback op-amp such as the AD8001 or AD8055) capable of settling within half a clock period at 40 MHz (12.5 ns). Source impedance greater than 100 ohms degrades aperture-time accuracy and increases distortion. Maintain a clock rise/fall time below 2 ns using a CMOS clock driver; TTL clock levels are accepted but CMOS-edge slew produces better jitter performance.
Avoid driving the analog input beyond the supply rails (5V) or below ground, as the ESD diodes will clamp and inject distortion. Do not leave the output enable (OE) pin floating; tie it low to enable outputs or high to high-impedance. Missing-code failures in production typically trace to insufficient decoupling or to ground-bounce between analog and digital return paths - verify with a 4-channel oscilloscope measuring VDD_A ripple during full-scale code transitions.
コンプライアンス情報
RoHS compliance confirmed by distributor listings. REACH, halogen-free status, and AEC-Q100 not specified in available supplier data - marked unknown. Not intended for automotive applications.
