THS1040CDWR - 10-Bit 40-MSPS Low Power ADC | Texas Instruments
Артикул: THS1040CDWR ✓ Активен| Кол-во | Цена за ед. | Итого |
|---|---|---|
| 1 | $9.85 | $9,85 |
| 10 | $8.92 | $89,20 |
| 100 | $7.65 | $765,00 |
| 500 | $6.42 | $3.210,00 |
| 1.000 | $5.18 | $5.180,00 |
| 2.000 | $4.75 | $9.500,00 |
THS1040CDWR Обзор
An ADC (analog-to-digital converter) is a mixed-signal integrated circuit that samples continuous analog voltages and converts them into discrete digital codes at a defined sample rate. The THS1040 belongs to the low-power, high-speed, moderate-resolution ADC category, sitting between general-purpose successive-approximation register (SAR) ADCs and high-resolution pipeline ADCs. It is part of the broader data converter hierarchy under signal-chain ICs within power management and signal conditioning. Low-power ADCs in this class typically serve portable and battery-fed imaging, communications IF, and instrumentation designs where 8 to 14 bits of resolution are sufficient.
Key features include configurable input functions (single-ended or differential), an adjustable internal voltage reference for flexible full-scale ranges, parallel CMOS-compatible output, and low power dissipation from 3-V rails. The pipelined architecture with multiple stages supports sustained 40 MSPS operation while maintaining low differential nonlinearity, making it suitable for digitizing intermediate-frequency signals in communications receivers and baseband processing in embedded systems.
Typical applications include portable digital still cameras and camcorders, IF/baseband digitization in wireless infrastructure, CCD imaging systems, ultrasound front-end digitization, and general-purpose high-speed data acquisition. The combination of 3-V single-supply operation and configurable input structure also makes the THS1040 attractive for low-power industrial sensor read-out designs.
When designing with this part, ensure the analog and digital supplies are well decoupled at the IC pins and that the analog input is bandwidth-limited to within the device's analog front-end capability to avoid SNR degradation. The internal reference should be bypassed with a recommended capacitor network to minimize reference noise coupling into the conversion result.
This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet alone, giving engineers a single reference for footprint, parametric, and lifecycle decisions when evaluating the THS1040CDWR for a new design.
Аналоги без доработки для THS1040CDWR — тот же корпус, pin-to-pin совместимость. Компоненты в других корпусах, требующие переработки PCB, исключены.
Варианты в этой серии
Модели той же серии, совместимые без доработки с THS1040CDWR (тот же форм-фактор и посадочное место) — отличается по Analog Supply Voltage, Architecture, Differential Nonlinearity (DNL), Digital Supply Voltage, Input Configuration.
Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:
THS1040CDWRG4
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
THS1040CDW
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
THS1040CDWG4
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
THS1040IDW
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
THS1040IDWR
✅ Прямая замена✓ В наличии
$5.3 / шт.
Открыть даташит →THS1040CDWR Максимальные параметры и электрические характеристики
| Разрешение | 10 bit |
| Sample Rate | 40 MSPS |
| Architecture | Pipelined CMOS |
| Number of Channels | 1 |
| Input Configuration | Single-ended or differential |
| Analog Supply Voltage | 3 V |
| Digital Supply Voltage | 3 V |
| Signal-to-Noise Ratio | 60 dB at 4.8 MHz |
| Spurious-Free Dynamic Range | 72 dB |
| Differential Nonlinearity (DNL) | +/-0.45 LSB |
| Voltage Reference | Internal, adjustable |
| Output Interface | Parallel CMOS |
| Диапазон рабочих температур | 0C to +70C (commercial grade) |
| Корпус | 28-pin SOIC (DW) |
| Тип монтажа | Surface Mount |
Конфигурация выводов THS1040CDWR
| Контакт 1 | AINP — Analog input positive |
| Контакт 2 | AINN — Analog input negative |
| Контакт 3 | REFP — Reference voltage positive |
| Контакт 4 | REFN — Reference voltage negative |
| Контакт 5 | REFT — Reference top (decoupling) |
| Контакт 6 | REFB — Reference bottom (decoupling) |
| Контакт 7 | AGND — Analog ground |
| Контакт 8 | AVDD — Analog 3-V supply |
| Контакт 9 | PD — Power-down control |
| Контакт 10 | OE — Output enable |
| Контакт 11 | DRVDD — Digital 3-V supply (output drivers) |
| Контакт 12 | DRGND — Digital ground |
| Контакт 13 | D9 (MSB) — Digital output bit 9 (MSB) |
| Контакт 14 | D8 — Digital output bit 8 |
| Контакт 15 | D7 — Digital output bit 7 |
| Контакт 16 | D6 — Digital output bit 6 |
| Контакт 17 | D5 — Digital output bit 5 |
| Контакт 18 | D4 — Digital output bit 4 |
| Контакт 19 | D3 — Digital output bit 3 |
| Контакт 20 | D2 — Digital output bit 2 |
| Контакт 21 | D1 — Digital output bit 1 |
| Контакт 22 | D0 (LSB) — Digital output bit 0 (LSB) |
| Контакт 23 | CLK — Sample clock input |
| Контакт 24 | NC — Not connected (per datasheet) |
| Контакт 25 | NC — Not connected (per datasheet) |
| Контакт 26 | NC — Not connected (per datasheet) |
| Контакт 27 | NC — Not connected (per datasheet) |
| Контакт 28 | NC — Not connected (per datasheet) |
Типичное применение
THS1040CDWR подходит для 6 применениеs: Portable Digital Still Camera / Camcorder, Wireless Baseband / IF Digitization, Ultrasound Imaging Front-End, General-Purpose Data Acquisition Card, Industrial Sensor Signal Digitizer, Set-Top Box / Video Processing.
Portable Digital Still Camera / Camcorder
The THS1040CDWR's 40 MSPS sample rate and 10-bit resolution match the readout bandwidth of consumer-grade CCD and CMOS image sensors used in digital still cameras and camcorders. Its single 3-V supply operation preserves battery life, while the configurable single-ended or differential analog input accommodates the typical AC-coupled CCD output. The 60 dB SNR at 4.8 MHz input supports a clean luminance channel with low visible noise; place the THS1040 adjacent to the image sensor with dedicated analog and digital supply planes to minimize noise injection from the parallel digital bus into the analog front-end.
Рекомендуется
Wireless Baseband / IF Digitization
In wireless receiver chains, the THS1040CDWR digitizes the intermediate-frequency (IF) or complex baseband signal with sufficient bandwidth for 2G/3G signal analysis and software-defined radio prototyping. Its 72 dB SFDR ensures that strong adjacent-channel blockers do not generate spurs that mask weaker desired signals. The differential analog input stage rejects common-mode noise from the preceding mixer and SAW filter. Power dissipation from 3-V rails keeps the part attractive for portable test equipment, and the parallel CMOS output simplifies capture with a low-cost FPGA.
Рекомендуется
Ultrasound Imaging Front-End
The THS1040CDWR supports digitization of low-frequency ultrasound receive channels with center frequencies up to 10 MHz, where its 40 MSPS sample rate satisfies Nyquist with comfortable margin. The 60 dB SNR provides adequate dynamic range for B-mode grayscale imaging, while the differential analog input accommodates the transformer-coupled output of a TGC-controlled LNA. A multi-channel ultrasound system can parallel several THS1040 devices, each synchronized to a common sample clock, with careful analog/digital supply isolation on the PCB to prevent crosstalk between adjacent channels.
Рекомендуется
General-Purpose Data Acquisition Card
For PC-based or PXI-style data acquisition cards digitizing sensor waveforms, vibration, or general analog signals up to 4-5 MHz analog bandwidth, the THS1040CDWR offers a cost-effective 10-bit path. Its parallel CMOS output integrates easily with FPGAs that perform FIFO buffering and PCIe transfer. The adjustable internal reference allows scaling the full-scale range to match sensor signal levels, maximizing dynamic range without external gain stages. The 28-pin SOIC package simplifies assembly on standard FR-4 PCB substrates using standard reflow profiles.
Рекомендуется
Industrial Sensor Signal Digitizer
Industrial vibration, acoustic emission, or partial-discharge sensors produce broadband analog signals that benefit from the THS1040CDWR's 40 MSPS capability and configurable differential input. The 3-V single-supply operation simplifies power design in 24V industrial bus systems when paired with a small isolated DC-DC converter. For harsher temperature environments, the THS1040IDW variant provides -40C to +85C operation as a drop-in alternative. Adequate input bandwidth limiting and proper analog/digital ground partitioning are essential to maintain SNR in electrically noisy industrial settings.
Рекомендуется
Set-Top Box / Video Processing
In set-top box and consumer video processing designs, the THS1040CDWR can digitize component video or auxiliary analog channels for format conversion and overlay processing. Its 40 MSPS sample rate handles standard-definition video (27 MHz) with margin, while the 10-bit resolution preserves color depth for professional or prosumer applications. The parallel CMOS output interfaces directly to a video scaler or DSP. Combined with TI's THS7303 video amplifier, the THS1040 forms a compact, low-power analog front-end for multi-format video capture.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для THS1040CDWR — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | THS1040CDWRG4 | THS1040CDW | THS1040CDWG4 | THS1040IDW | THS1040IDWR |
|---|---|---|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 28-pin SOIC (DW) | 28-pin SOIC (DW) - same | 28-pin SOIC (DW) - same | 28-pin SOIC (DW) - same | 28-pin SOIC (DW) - same | 28-pin SOIC (DW) - same |
| Resolution | 10 bit | 10 bit | 10 bit | 10 bit | 10 bit | 10 bit |
| Sample Rate | 40 MSPS | 40 MSPS | 40 MSPS | 40 MSPS | 40 MSPS | 40 MSPS |
| Operating Temperature Range | 0C to +70C (commercial) | 0C to +70C (commercial) | 0C to +70C (commercial) | 0C to +70C (commercial) | -40C to +85C (industrial) | -40C to +85C (industrial) |
| Packaging | Tape & Reel | Tape & Reel | Tube | Tube | Tube | Tape & Reel |
| Signal-to-Noise Ratio | 60 dB at 4.8 MHz | 60 dB at 4.8 MHz | 60 dB at 4.8 MHz | 60 dB at 4.8 MHz | 60 dB at 4.8 MHz | 60 dB at 4.8 MHz |
| Spurious-Free Dynamic Range | 72 dB | 72 dB | 72 dB | 72 dB | 72 dB | 72 dB |
Ключевые отличия
- Industrial-temperature drop-in variant available without layout change (против THS1040IDW)
- Lead-free / RoHS-compliant version for modern assembly lines (против THS1040CDWRG4)
- Same die, multiple packaging options for assembly flexibility (против THS1040CDW (tube))
Заметки по проектированию
The THS1040CDWR requires separate analog (AVDD) and digital (DRVDD) 3-V rails. Place 10 uF tantalum (or ceramic) bulk decoupling plus 0.1 uF ceramic capacitors within 3 mm of each supply pin. Use a ferrite bead between AVDD and DRVDD to prevent digital switching noise from coupling into the analog front-end. Power-down (PD) pin should be tied high or low through a 10 kohm resistor to define the default state during reset.
Route the parallel CMOS digital outputs on the opposite side of the PCB from the analog input traces, or use an internal ground plane as a shield. Keep the analog input trace lengths matched and short (< 25 mm) to minimize common-mode noise pickup. The exposed analog input pair (AINP/AINN) should be guarded by a ground ring on the top layer tied to AGND through vias to the ground plane, per the THS1040EVM reference layout.
Clock jitter directly degrades SNR at high input frequencies. Use a low-jitter clock source (such as CDCE906 or a clean crystal oscillator) and keep the CLK trace impedance matched to 50 ohm with a series termination resistor at the driver. The CLK pin is sensitive to ringing - add a small ferrite bead or 33 ohm series resistor at the THS1040 end if the trace is longer than 25 mm.
Do not leave the analog inputs floating when the device is powered - this can cause DC bias drift and elevated DNL. Add 10 kohm bias resistors to mid-supply if a true differential source is not available. Avoid driving the analog inputs beyond the AVDD rail; overdrive can permanently damage the input ESD structure and cause long-term linearity degradation.
Информация о соответствии
THS1040CDWRG4 / THS1040CDWG4 carry the G4 suffix indicating TI's RoHS-compliant lead-free packaging. Standard THS1040CDWR (non-G4) compliance status was not retrieved in the verified web data and is marked as [DATA_NEEDED]. AEC-Q100 is not applicable for this commercial-grade ADC; the THS1040 family is not automotive-qualified.
