ADC0801S040TS/C1 - 8-bit 40MSPS SAR ADC | NXP/Renesas
MPN： ADC0801S040TS/C1 ✓ 啟用中ADC0801S040TS/C1 概覽
An SAR ADC (Successive Approximation Register Analog-to-Digital Converter) is a type of data converter that uses a binary search algorithm and an internal DAC to resolve each analog sample to its final digital code in N clock cycles, where N is the resolution in bits. SAR ADCs are valued for their deterministic latency, low power consumption, and the absence of pipeline delay, making them ideal for multiplexed control loops, instrumentation, and high-accuracy sampling at moderate speeds. The ADC0801S040 belongs to the data-acquisition IC hierarchy: ADC -> data converter -> data acquisition -> signal chain IC -> semiconductor.
Key features include a maximum sampling rate of 40 MSPS, single-ended analog input with 2.7 V to 5.5 V input range, CMOS/TTL-compatible digital I/O, and an integrated sleep mode that reduces device power consumption when not converting. The 20-LSSOP (4.40 mm width) package provides a compact surface-mount footprint suitable for high-density PCB designs. Operating temperature range is -20 C to +75 C (commercial grade), and the device is supplied in tube packaging as the standard shipping format.
The internal architecture uses a resistive-ladder DAC combined with a comparator and SAR logic to perform 8 successive approximations per conversion cycle. Each conversion takes approximately 8 clock cycles, after which the parallel output bus (DB0-DB7) presents the conversion result until the next sample. The sleep-mode pin allows the user to gate the converter's analog/digital supply current when the application is idle.
Typical applications include video digitisation, general-purpose data acquisition, image processing front-ends, and IF/baseband sampling in communications receivers. It is also used in battery-powered portable instrumentation where the low-power sleep mode reduces quiescent current. The wide input range (2.7 V to 5.5 V) supports single 3.3 V and 5 V system rails.
When designing with this device, ensure the analog input bandwidth and source-impedance driving network satisfies the datasheet acquisition-time requirement to avoid gain error. Use a low-jitter clock to keep aperture uncertainty low at 40 MSPS, and decouple AVDD/DVDD independently with 100 nF ceramic capacitors placed close to the supply pins. Sleep-mode timing must be respected if the part is duty-cycled to save power.
This page synthesises distributor pricing (DigiKey, Mouser), drop-in alternative information and design considerations drawn from the manufacturer datasheet, providing a unified reference beyond what is shown on any single distributor product page.
直接替換替代品，適用於 ADC0801S040TS/C1 — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： ADC0801S040TS/C1 （相同外形與佔位） — 差異在於 Architecture, Package, Packaging, Sampling Rate, Data Interface.
ADC0801S040TS/C1:1
✅ 直接替換聯絡詢價
查看資料表 →ADC0801S040TS/C18
✅ 直接替換📋 參考替代品（不在目錄中）
AD9051BRSRL
✅ 直接替換聯絡詢價
查看資料表 →AD9051BRSRL-2V
✅ 直接替換聯絡詢價
查看資料表 →ADS7813UB/1K
✅ 直接替換聯絡詢價
查看資料表 →ADC0801S040TS/C1 最大額定值與電氣特性
| Number of Bits | 8 |
| 取樣率 | 40 MSPS |
| Number of Inputs | 1 |
| Architecture | SAR |
| 輸入電壓範圍 | 2.7 V to 5.5 V |
| Data Interface | Parallel (CMOS/TTL) |
| 封裝 | 20-LSSOP (0.173", 4.40 mm width) |
| Package Type | SSOP-20 |
| 安裝類型 | Surface Mount |
| 工作溫度 | -20 C to +75 C |
| Temperature Grade | Commercial |
| Sleep Mode | Yes (power-down) |
| Power Supply | 2.7 V to 5.5 V single supply |
| Packaging | Tube |
ADC0801S040TS/C1 腳位配置
| 腳位 1 | AVDD — Analog supply (2.7 V to 5.5 V) |
| 腳位 2 | AIN — Analog input |
| 腳位 3 | AGND — Analog ground |
| 腳位 4 | REF — Reference voltage / decoupling |
| 腳位 5 | NC — Not connected (per datasheet) |
| 腳位 6 | NC — Not connected (per datasheet) |
| 腳位 7 | NC — Not connected (per datasheet) |
| 腳位 8 | NC — Not connected (per datasheet) |
| 腳位 9 | DB7 — Data output bit 7 (MSB) |
| 腳位 10 | DB6 — Data output bit 6 |
| 腳位 11 | DVDD — Digital supply |
| 腳位 12 | DGND — Digital ground |
| 腳位 13 | DB5 — Data output bit 5 |
| 腳位 14 | DB4 — Data output bit 4 |
| 腳位 15 | DB3 — Data output bit 3 |
| 腳位 16 | DB2 — Data output bit 2 |
| 腳位 17 | DB1 — Data output bit 1 |
| 腳位 18 | DB0 — Data output bit 0 (LSB) |
| 腳位 19 | CLK — Conversion clock input |
| 腳位 20 | SLEEP — Sleep-mode control (active high) |
典型應用
ADC0801S040TS/C1 適用於 6 應用s: Video Digitisation, General-Purpose Data Acquisition, Communications IF Sampling, Image Processing Front-End, Portable Battery-Powered Instrumentation, Industrial Control Monitoring.
Video Digitisation
The ADC0801S040TS/C1 suits video digitisation front-ends because its 40 MSPS sampling rate exceeds the Nyquist requirement for standard-definition video bandwidth (up to ~6 MHz for composite video) while its 8-bit resolution provides the dynamic range typical of broadcast video ADC applications. Placed at the front of a video pipeline between the analog input amplifier and an FPGA/ASIC, the converter delivers 8-bit parallel samples on DB0-DB7 synchronised to a low-jitter pixel clock. Its 2.7 V to 5.5 V supply range allows it to operate directly from a 3.3 V or 5 V analog rail common in video processing boards. Compared with a 12-bit pipeline ADC at the same sample rate, this part consumes significantly less power while providing adequate bit-depth for display applications.
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General-Purpose Data Acquisition
For multi-channel data acquisition boards the ADC0801S040TS/C1 provides a deterministic SAR conversion with no pipeline delay, making it well suited to multiplexed control loops where the controller must observe each conversion result before issuing the next channel select. With a 40 MSPS conversion rate and a single analog input, the part is typically used in conjunction with an external analog multiplexer for systems requiring several inputs. Its 20-LSSOP package occupies minimal PCB area, allowing dense channel-per-rack designs. The integrated sleep mode reduces supply current when the host is idle, suiting battery-powered instrumentation panels. Compared with sigma-delta ADCs at similar resolution, this part delivers much higher throughput.
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Communications IF Sampling
In IF sampling receivers the ADC0801S040TS/C1 captures intermediate-frequency signals digitised directly into the digital baseband processing chain. The 40 MSPS sampling rate provides adequate bandwidth for narrowband IF subsystems in two-way radio, satellite telemetry and wireless base-station monitoring, while 8-bit resolution keeps cost low for cost-sensitive mass-market designs. Driving the analog input from a low-distortion op-amp (such as the AD8021) maintains spurious-free dynamic range. The CMOS/TTL-compatible parallel interface routes the digital output directly into an FPGA or DSP for demodulation. Designers using a higher IF should consider a 10- or 12-bit ADC for better SFDR.
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Image Processing Front-End
Embedded vision systems based on CMOS image sensors can use the ADC0801S040TS/C1 to digitise analog pixel streams when the sensor outputs analogue voltages. The 40 MSPS throughput is sufficient for low-resolution VGA-class sensors, and the 8-bit depth matches the typical pixel precision of monochrome cameras. Placed between the image sensor output buffer and a frame-buffer ASIC, the converter's parallel interface minimises latency so that the host processor can apply real-time image-pipeline transforms. The compact SSOP-20 package suits space-constrained camera modules used in industrial inspection. For colour or higher-resolution designs, an upgrade to a 10- or 12-bit ADC is recommended.
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Portable Battery-Powered Instrumentation
Handheld oscilloscopes, field data loggers and portable medical instruments benefit from the ADC0801S040TS/C1's combination of low power, small package, and integrated sleep mode. With a 2.7 V to 5.5 V supply range the device operates directly from a single Li-ion cell (3.0 V to 4.2 V) or two alkaline cells, eliminating the need for a boost converter. Activating the sleep mode between sample bursts reduces quiescent current, extending battery life in applications where continuous sampling is not required. The 8-bit resolution is sufficient for bar-graph displays and basic waveform capture in entry-level instruments. Compared with higher-resolution SAR ADCs, this part offers better battery life at lower cost.
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Industrial Control Monitoring
PLC analog-input modules and motor-control boards can use the ADC0801S040TS/C1 to sample sensor signals such as strain-gauge bridges, thermocouple amplifiers, and current-sense outputs. The 40 MSPS sampling rate supports wide-bandwidth feedback loops in vector-controlled motor drives, while 8-bit resolution suits indicator-panel-style monitoring where precise control is not required. The 20-LSSOP package withstands typical industrial assembly temperatures, though commercial-grade operating range (-20 C to +75 C) limits deployment to cabinet-internal designs. An external analog front-end provides anti-alias filtering and signal conditioning before the ADC. For closed-loop servo control applications, a 12-bit SAR ADC is preferred.
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推薦產品摘要
工程參考資料，適用於 ADC0801S040TS/C1 — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | ADC0801S040TS/C1:1 | ADC0801S040TS/C18 | AD9051BRSRL | AD9051BRSRL-2V | ADS7813UB/1K |
|---|---|---|---|---|---|---|
| Package | 20-LSSOP (4.40 mm) | 20-LSSOP - same | 20-LSSOP - same | 20-SSOP - same footprint | 20-SSOP - same footprint | 20-SSOP - same footprint |
| Brand | NXP Semiconductors | NXP Semiconductors | Renesas Electronics | Analog Devices | Analog Devices | Texas Instruments |
| Resolution (bits) | 8 | 8 | 8 | 10 | 10 | 12 |
| Sampling Rate | 40 MSPS | 40 MSPS | 40 MSPS | 60 MSPS | 60 MSPS | 40 kSPS |
| Architecture | SAR | SAR | SAR | SAR | SAR | SAR |
| Input Voltage Range | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 2.7 V to 5.5 V | 5 V (single supply) | 5 V (2 V version) | 5 V (single supply) |
| Data Interface | Parallel CMOS/TTL | Parallel CMOS/TTL | Parallel CMOS/TTL | Parallel CMOS/TTL | Parallel CMOS/TTL | Serial/Parallel |
| Operating Temperature | -20 C to +75 C | -20 C to +75 C | -20 C to +75 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
| Approximate Unit Price (qty-1) | $5.85 | $5.85 | $5.85 | $7.50 | $7.50 | $9.10 |
主要差異化特點
- Same-die drop-in alternative within the NXP/Renesas family (對比ADC0801S040TS/C1:1)
- Higher resolution option in the same SSOP-20 footprint (對比AD9051BRSRL)
- Wide supply voltage range (對比AD9051BRSRL)
設計說明
Use independent AVDD and DVDD rails or ferrite-bead isolation between analog and digital supplies. Place 100 nF ceramic decoupling capacitors as close as possible to the AVDD pin (pin 1) and the DVDD pin (pin 11). A bulk 10 uF tantalum or ceramic capacitor near the package further reduces supply ripple. Activate the SLEEP pin (pin 20, active high) during idle periods to reduce quiescent current. The integrated sleep mode drops the analog and digital supply currents significantly, making the part attractive for battery-powered instrumentation.
Route the analog input trace as a short, guarded microstrip to minimise capacitive coupling from the digital DB0-DB7 output lines. Keep the analog input impedance network as close to the AIN pin as possible. Provide an analog ground plane immediately under the analog traces, with a single-point connection to the digital ground near the AGND pin. The CLK pin (pin 19) is particularly sensitive to jitter: use a low-jitter clock source and keep the clock trace short. Apply anti-alias filtering on AIN before the converter to limit out-of-band noise.
Drive the CLK pin (pin 19) from a low-jitter, CMOS-level source; aperture uncertainty is directly proportional to clock jitter, and at 40 MSPS even 10 ps of jitter can degrade SNR. Use a series-termination resistor close to the CLK driver to damp reflections on long clock traces. Decouple the reference voltage pin (REF) with a 100 nF low-ESR ceramic capacitor to AGND to suppress reference-induced noise. If the analog source impedance is high (>1 kohm), add a buffer op-amp such as the AD8021 in front of AIN to preserve acquisition-time accuracy.
Do not violate the maximum input voltage range of 2.7 V to 5.5 V on AIN or the supply pins - voltages above 5.5 V will damage the device. Do not leave the SLEEP pin floating; tie it to DGND through a pull-down resistor if unused, otherwise the part may power up in sleep mode. Always deassert SLEEP before issuing a conversion clock. Verify the exact pinout against the manufacturer's latest datasheet revision before committing to PCB layout, because the suffix variant (C1 vs C1:1 vs C18) refers to packaging options rather than electrical differences.
合規資訊
RoHS/REACH/lead-free status was not present in the verified distributor data; marked as unknown per data authenticity rule. AEC-Q100 status is not applicable for this commercial-grade (-20 to +75 C) part; choose the AEC-Q100 variant from the same family if automotive qualification is required.
