ADS41B29IRGZ25 - 12-Bit 250MSPS Buffered Low-Power ADC | TI
Артикул: ADS41B29IRGZ25 ✓ Активен| Кол-во | Цена за ед. | Итого |
|---|---|---|
| 1 | $32.5 | $32,50 |
| 10 | $29.2 | $292,00 |
| 100 | $25.85 | $2.585,00 |
| 500 | $22.4 | $11.200,00 |
| 1.000 | $19.95 | $19.950,00 |
ADS41B29IRGZ25 Обзор
An analog-to-digital converter (ADC) is a data conversion integrated circuit that samples a continuous-time analog signal and produces a discrete-time digital code proportional to the input voltage. ADCs are categorized by architecture (SAR, pipelined, sigma-delta, flash), resolution (bits), and maximum sample rate. The ADS41B29 is a pipelined ADC, the architecture of choice for high-speed (>100 MSPS) signal acquisition, balancing conversion latency, dynamic range, and power consumption for communications and instrumentation front ends.
Key specifications include 12-bit native resolution, 250 MSPS maximum sample rate, parallel CMOS and DDR LVDS digital output interfaces, integrated analog input buffer, and ultralow power consumption enabled by TI's proprietary design techniques. The buffered analog input removes the requirement for an external high-bandwidth op-amp front end, simplifying board layout and reducing BOM cost. The 48-VQFN package with exposed pad provides low thermal resistance for high-reliability operation in industrial environments.
The device uses a pipelined architecture with multi-bit/stage error correction to deliver high spurious-free dynamic range (SFDR) and signal-to-noise ratio (SNR) across a wide input frequency range, supporting undersampling for IF sampling applications. Internal registers are accessed via a 3-wire or 4-wire serial programming interface, allowing gain, offset, and output format to be configured per application. A synchronization pin enables multi-channel alignment across several ADS41Bx9 devices in a single system.
Typical applications include multi-carrier wireless base station receivers, PA linearization feedback paths, test and measurement digitizers, radar and lidar intermediate-frequency sampling, and software-defined radio platforms. Designers can pair the ADC with a TI LMH6521 or LMH6517 variable-gain amplifier for full AFE functionality, and a TI CDCE62002 or LMK0480x clock jitter cleaner to meet SNR requirements at high input frequencies.
When designing with this part, ensure the analog input common-mode voltage is biased correctly per the datasheet and that the exposed thermal pad is soldered to a sufficient copper area for heat dissipation. Decoupling the supply pins with 0.1uF ceramic capacitors placed within 3 mm of each pin is critical for high-speed operation. This page synthesizes distributor pricing, drop-in pin-compatible alternatives, and design notes not found in the manufacturer datasheet alone.
Аналоги без доработки для ADS41B29IRGZ25 — 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 ADS41B29IRGZ25 (тот же форм-фактор и посадочное место) — отличается по Operating Temperature Range, Resolution, Analog Supply Voltage, Digital Supply Voltage, Input Type.
Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:
ADS41B29IRGZT
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
ADS41B29IRGZR
✅ Прямая замена📋 Справочный аналог (нет в каталоге)
ADS41A29IRGZ25
✅ Прямая замена ⚠️ Характеристики не проверены📋 Справочный аналог (нет в каталоге)
ADS6129IRGZ25
✅ Прямая замена✓ В наличии
$23.1 / шт.
Открыть даташит →ADS6242IRGZR
✅ Прямая замена✓ В наличии
$18.25 / шт.
Открыть даташит →ADS62P48IRGC25
✅ Прямая замена ⚠️ Характеристики не проверены✓ В наличии
$49.2 / шт.
Открыть даташит →ADS41B29IRGZ25 Максимальные параметры и электрические характеристики
| Разрешение | 12 bits |
| Number of Input Channels | 1 |
| Conversion Architecture | Pipelined |
| Maximum Sample Rate | 250 MSPS |
| Analog Input | Buffered differential |
| Digital Output Interface | Parallel CMOS / DDR LVDS |
| Input Voltage Range (Full-Scale) | 2.0 Vpp differential |
| Analog Supply Voltage | 3.3 V |
| Digital Supply Voltage | 1.8 V |
| Диапазон рабочих температур | -40C to +85C |
| Package Type | 48-VQFN (7x7 mm) with exposed pad |
| Package Code | HVQCCN |
| Тип монтажа | Surface Mount |
| Уровень MSL | 3 |
| Lead-Free / RoHS | Yes / Compliant |
| Input Buffer | Integrated (no external driver required) |
| Programming Interface | 3-wire / 4-wire serial |
Конфигурация выводов ADS41B29IRGZ25
| Контакт 1 | AVDD — Analog 3.3V supply |
| Контакт 2 | AVSS — Analog ground |
| Контакт 3 | AINP — Differential analog input positive |
| Контакт 4 | AINN — Differential analog input negative |
| Контакт 5 | VCM — Common-mode voltage output |
| Контакт 6 | AVDD — Analog 3.3V supply |
| Контакт 7 | AVSS — Analog ground |
| Контакт 8 | CLKP — Differential clock input positive |
| Контакт 9 | CLKN — Differential clock input negative |
| Контакт 10 | AVSS — Analog ground |
| Контакт 11 | AVDD — Analog 3.3V supply |
| Контакт 12 | AVSS — Analog ground |
| Контакт 13 | SEN — Serial interface enable |
| Контакт 14 | SCLK — Serial interface clock |
| Контакт 15 | SDATA — Serial interface data |
| Контакт 16 | DRVDD — Digital output driver 1.8V supply |
| Контакт 17 | D0 — Data output bit 0 (LSB) |
| Контакт 18 | D1 — Data output bit 1 |
| Контакт 19 | D2 — Data output bit 2 |
| Контакт 20 | D3 — Data output bit 3 |
| Контакт 21 | D4 — Data output bit 4 |
| Контакт 22 | D5 — Data output bit 5 |
| Контакт 23 | D6 — Data output bit 6 |
| Контакт 24 | D7 — Data output bit 7 |
| Контакт 25 | D8 — Data output bit 8 |
| Контакт 26 | D9 — Data output bit 9 |
| Контакт 27 | D10 — Data output bit 10 |
| Контакт 28 | D11 — Data output bit 11 (MSB) |
| Контакт 29 | DCLK — Output data clock |
| Контакт 30 | DRVSS — Digital output driver ground |
| Контакт 31 | DRVDD — Digital output driver 1.8V supply |
| Контакт 32 | OVR — Out-of-range indicator |
| Контакт 33 | DRVSS — Digital output driver ground |
| Контакт 34 | RESET — Hardware reset (active low) |
| Контакт 35 | PDN — Power-down (active high) |
| Контакт 36 | SYNC — Multi-device synchronization |
| Контакт 37 | DRVDD — Digital output driver 1.8V supply |
| Контакт 38 | DRVSS — Digital output driver ground |
| Контакт 39 | DVDD — Digital core 1.8V supply |
| Контакт 40 | DVSS — Digital core ground |
| Контакт 41 | AVSS — Analog ground |
| Контакт 42 | AVDD — Analog 3.3V supply |
| Контакт 43 | AVSS — Analog ground |
| Контакт 44 | AVDD — Analog 3.3V supply |
| Контакт 45 | NC — Not connected |
| Контакт 46 | NC — Not connected |
| Контакт 47 | NC — Not connected |
| Контакт 48 | AVSS — Analog ground |
Типичное применение
ADS41B29IRGZ25 подходит для 6 применениеs: Multi-Carrier Wireless Base Station Receiver, PA Linearization Feedback Path (DPD), Software-Defined Radio (SDR) Platform, Test and Measurement Digitizer Front End, Radar and Lidar IF Sampling, Medical Imaging Ultrasound Receiver.
Multi-Carrier Wireless Base Station Receiver
The ADS41B29IRGZ25's 250 MSPS sample rate and 12-bit resolution make it well suited for multi-carrier base station receivers sampling wide-bandwidth IF signals. The integrated analog input buffer eliminates the need for an external high-bandwidth driver, holding the input impedance constant across frequency and simplifying the front-end matching network. The device's pipelined architecture delivers consistent SFDR and SNR performance across multi-carrier input conditions, supporting carriers in the 70-200 MHz IF range.
Рекомендуется
PA Linearization Feedback Path (DPD)
The ADS41B29IRGZ25 is widely used in digital predistortion (DPD) feedback paths that linearize power amplifiers in macro base stations and small cells. At 250 MSPS the ADC captures the wideband PA output signal with sufficient harmonic headroom for accurate distortion extraction, while the buffered analog input accepts the post-attenuator signal directly without an external driver. The parallel CMOS and LVDS output options ease integration with FPGA-based DPD processors.
Рекомендуется
Software-Defined Radio (SDR) Platform
Software-defined radio platforms use the ADS41B29IRGZ25's wide input bandwidth and 250 MSPS sample rate to digitize IF or direct-RF signals, enabling flexible digital tuning and demodulation in FPGA or DSP. The integrated input buffer maintains constant input impedance across frequency, which is critical for SDR front ends that must cover multiple bands with a single analog network. The 48-VQFN package fits small-form-factor SDR modules for tactical and commercial wireless systems.
Рекомендуется
Test and Measurement Digitizer Front End
Benchtop and modular test instruments use the ADS41B29IRGZ25 as the front-end digitizer for oscilloscopes, spectrum analyzers, and arbitrary waveform digitizers. The buffered input simplifies probe-interface design by holding impedance constant, while the 12-bit resolution and 250 MSPS rate cover audio to video bandwidth applications. The exposed thermal pad of the 48-VQFN package supports continuous high-temperature operation in densely packed instrument chassis.
Рекомендуется
Radar and Lidar IF Sampling
Radar and lidar receiver chains use the ADS41B29IRGZ25 to sample intermediate-frequency signals from mixers, with the 250 MSPS rate supporting wide-bandwidth chirp capture. The integrated input buffer is beneficial for IF frequencies in the 100-200 MHz range, where external op-amp driver solutions can introduce distortion. The industrial -40C to +85C temperature range supports outdoor and vehicular radar deployments.
Рекомендуется
Medical Imaging Ultrasound Receiver
Ultrasound imaging systems use the ADS41B29IRGZ25 to digitize returning acoustic signals after beamforming and time-gain compensation. The 12-bit resolution and 250 MSPS sample rate capture the dynamic range and bandwidth of broadband ultrasound transducers, while the integrated input buffer simplifies the per-channel analog front end. The buffered input holds channel-to-channel gain matching stable, critical for accurate beamforming and image reconstruction.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для ADS41B29IRGZ25 — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | ADS41B29IRGZT | ADS41B29IRGZR | ADS41A29IRGZ25 | ADS6129IRGZ25 | ADS6242IRGZR | ADS62P48IRGC25 |
|---|---|---|---|---|---|---|---|
| Package | 48-VQFN (7x7) with EP | 48-VQFN (7x7) with EP - same | 48-VQFN (7x7) with EP - same | 48-VQFN (7x7) with EP - same | 48-VQFN (7x7) with EP - same | 48-VQFN (7x7) with EP - same | 48-VQFN (7x7) with EP - same |
| Brand | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments | Texas Instruments |
| Resolution | 12 bits | 12 bits | 12 bits | 12 bits | 12 bits | 14 bits | 14 bits |
| Maximum Sample Rate | 250 MSPS | 250 MSPS | 250 MSPS | 250 MSPS | 250 MSPS | 125 MSPS | 210 MSPS |
| Integrated Input Buffer | Yes | Yes | Yes | Yes | No (external driver required) | No (external driver required) | No (external driver required) |
| Number of Channels | 1 | 1 | 1 | 1 | 1 | 1 | 2 |
| Output Interface | Parallel CMOS / DDR LVDS | Parallel CMOS / DDR LVDS | Parallel CMOS / DDR LVDS | Parallel CMOS / DDR LVDS | Parallel CMOS / DDR LVDS | Parallel CMOS / DDR LVDS | Parallel LVDS |
| Operating Temperature Range | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
Ключевые отличия
- Integrated analog input buffer eliminates external driver (против ADS6129IRGZ25)
- Buffered single-channel 12-bit 250 MSPS in 48-VQFN (против ADS62P48IRGC25)
- Lower power at same 250 MSPS speed (против ADS41A29IRGZ25)
Заметки по проектированию
Estimated: Total power consumption for the ADS41B29IRGZ25 is in the range of 250-300 mW at 250 MSPS based on the TI ADS41Bx9 family datasheet typical values (3.3V analog + 1.8V digital + output driver). Provide separate analog (AVDD), digital core (DVDD), and digital output driver (DRVDD) supply rails, each decoupled with 0.1uF ceramic capacitors placed within 3 mm of the supply pins. Use a ferrite bead or pi-filter between the analog and digital supplies to prevent switching noise from coupling into the analog front end.
The 48-VQFN package has an exposed thermal pad (EP) that MUST be soldered to a ground plane for thermal dissipation. Use a via array (9-16 vias in a 3x3 to 4x4 grid) connecting the EP to an internal ground plane. Route the differential analog input traces (AINP/AINN) with 100 ohm differential impedance, length-matched within 0.5 mm, and keep them away from the parallel CMOS/LVDS output traces to minimize digital switching noise coupling into the analog front end.
Common pitfalls when using the ADS41B29IRGZ25: (1) failing to set the VCM pin's external bypass capacitor (typically 0.1uF) to provide a clean common-mode reference; (2) using a clock source with too much jitter, which degrades SNR per the formula SNR = 20*log10(1 / (2*pi*fin*tjitter)); (3) routing the reset (RESET) and power-down (PDN) pins without proper pull-up/pull-down resistors, which can leave the device in an undefined state at power-up. Always initialize the device via the serial interface after power-up before applying the clock and analog input.
Информация о соответствии
RoHS compliant and lead-free per TI product page. Not AEC-Q100 qualified - this part targets industrial/consumer, not automotive. For automotive, use AEC-Q100 qualified alternatives such as ADS41A29IRGZ25-Q1.
