ADS41B29IRGZ25 - 12-Bit 250MSPS Buffered Low-Power ADC | TI
MPN: ADS41B29IRGZ25 ✓ Hoạt độngADS41B29IRGZ25 Tóm tắt
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.
Bộ thay thế dễ dàng lắp đặt cho ADS41B29IRGZ25 — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với ADS41B29IRGZ25 (cùng hình factor và footprint) — khác nhau ở Operating Temperature Range, Resolution, Analog Supply Voltage, Digital Supply Voltage, Input Type.
ADS41B29IRGZT
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ADS41B29IRGZR
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
ADS41A29IRGZ25
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
ADS6129IRGZ25
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ADS6242IRGZR
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →ADS62P48IRGC25
✅ Drop-In ⚠️ Thông số chưa được xác minhLiên hệ để biết giá
Xem tài liệu →ADS41B29IRGZ25 Tỷ lệ tối đa & tính chất điện
| Độ phân giải | 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 |
| Khoảng nhiệt độ hoạt động | -40C to +85C |
| Package Type | 48-VQFN (7x7 mm) with exposed pad |
| Package Code | HVQCCN |
| Kiểu lắp đặt | Surface Mount |
| Cấp MSL | 3 |
| Lead-Free / RoHS | Yes / Compliant |
| Input Buffer | Integrated (no external driver required) |
| Programming Interface | 3-wire / 4-wire serial |
Cấu hình chân ADS41B29IRGZ25
| Chân 1 | AVDD — Analog 3.3V supply |
| Chân 2 | AVSS — Analog ground |
| Chân 3 | AINP — Differential analog input positive |
| Chân 4 | AINN — Differential analog input negative |
| Chân 5 | VCM — Common-mode voltage output |
| Chân 6 | AVDD — Analog 3.3V supply |
| Chân 7 | AVSS — Analog ground |
| Chân 8 | CLKP — Differential clock input positive |
| Chân 9 | CLKN — Differential clock input negative |
| Chân 10 | AVSS — Analog ground |
| Chân 11 | AVDD — Analog 3.3V supply |
| Chân 12 | AVSS — Analog ground |
| Chân 13 | SEN — Serial interface enable |
| Chân 14 | SCLK — Serial interface clock |
| Chân 15 | SDATA — Serial interface data |
| Chân 16 | DRVDD — Digital output driver 1.8V supply |
| Chân 17 | D0 — Data output bit 0 (LSB) |
| Chân 18 | D1 — Data output bit 1 |
| Chân 19 | D2 — Data output bit 2 |
| Chân 20 | D3 — Data output bit 3 |
| Chân 21 | D4 — Data output bit 4 |
| Chân 22 | D5 — Data output bit 5 |
| Chân 23 | D6 — Data output bit 6 |
| Chân 24 | D7 — Data output bit 7 |
| Chân 25 | D8 — Data output bit 8 |
| Chân 26 | D9 — Data output bit 9 |
| Chân 27 | D10 — Data output bit 10 |
| Chân 28 | D11 — Data output bit 11 (MSB) |
| Chân 29 | DCLK — Output data clock |
| Chân 30 | DRVSS — Digital output driver ground |
| Chân 31 | DRVDD — Digital output driver 1.8V supply |
| Chân 32 | OVR — Out-of-range indicator |
| Chân 33 | DRVSS — Digital output driver ground |
| Chân 34 | RESET — Hardware reset (active low) |
| Chân 35 | PDN — Power-down (active high) |
| Chân 36 | SYNC — Multi-device synchronization |
| Chân 37 | DRVDD — Digital output driver 1.8V supply |
| Chân 38 | DRVSS — Digital output driver ground |
| Chân 39 | DVDD — Digital core 1.8V supply |
| Chân 40 | DVSS — Digital core ground |
| Chân 41 | AVSS — Analog ground |
| Chân 42 | AVDD — Analog 3.3V supply |
| Chân 43 | AVSS — Analog ground |
| Chân 44 | AVDD — Analog 3.3V supply |
| Chân 45 | NC — Not connected |
| Chân 46 | NC — Not connected |
| Chân 47 | NC — Not connected |
| Chân 48 | AVSS — Analog ground |
Ứng dụng tiêu biểu
ADS41B29IRGZ25 phù hợp cho 6 Áp dụngs: 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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
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.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho ADS41B29IRGZ25 — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | 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 |
Bảo phân biệt quan trọng
- Integrated analog input buffer eliminates external driver (vsADS6129IRGZ25)
- Buffered single-channel 12-bit 250 MSPS in 48-VQFN (vsADS62P48IRGC25)
- Lower power at same 250 MSPS speed (vsADS41A29IRGZ25)
Ghi chú thiết kế
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.
Thông tin tuân thủ
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.
