ADS41B29IRGZ25 - 12-Bit 250MSPS Buffered Low-Power ADC | TI
MPN: ADS41B29IRGZ25 ✓ פעילADS41B29IRGZ25 סקירה
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.
חלופות תחליף ישיר עבור ADS41B29IRGZ25 — אותו מארז, תואם פין-לפין. חלקים במארז שונה הדורשים עיבוד מחדש של ה-PCB אינם נכללים.
וריאנטים בסדרה זו
דגמים מאותה סדרה התואמים Drop-in עם ADS41B29IRGZ25 (אותו גורם צורה וטביעת רגל) — שונים ב Operating Temperature Range, Resolution, Analog Supply Voltage, Digital Supply Voltage, Input Type.
ADS41B29IRGZT
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
ADS41B29IRGZR
✅ Drop-In📋 חלופה להתייחסות (לא בקטלוג)
ADS41A29IRGZ25
✅ Drop-In ⚠️ מפרטים לא מאומתים📋 חלופה להתייחסות (לא בקטלוג)
ADS6129IRGZ25
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←ADS6242IRGZR
✅ Drop-Inצור קשר לקבלת מחיר
הצג גיליון נתונים ←ADS62P48IRGC25
✅ Drop-In ⚠️ מפרטים לא מאומתיםצור קשר לקבלת מחיר
הצג גיליון נתונים ←ADS41B29IRGZ25 דירוגים מרביים ומאפיינים חשמליים
| רזולוציה | 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 |
| טווח טמפרטורת פעולה | -40C to +85C |
| Package Type | 48-VQFN (7x7 mm) with exposed pad |
| Package Code | HVQCCN |
| סוג הרכבה | Surface Mount |
| רמת MSL | 3 |
| Lead-Free / RoHS | Yes / Compliant |
| Input Buffer | Integrated (no external driver required) |
| Programming Interface | 3-wire / 4-wire serial |
תצורת פינים של ADS41B29IRGZ25
| פין 1 | AVDD — Analog 3.3V supply |
| פין 2 | AVSS — Analog ground |
| פין 3 | AINP — Differential analog input positive |
| פין 4 | AINN — Differential analog input negative |
| פין 5 | VCM — Common-mode voltage output |
| פין 6 | AVDD — Analog 3.3V supply |
| פין 7 | AVSS — Analog ground |
| פין 8 | CLKP — Differential clock input positive |
| פין 9 | CLKN — Differential clock input negative |
| פין 10 | AVSS — Analog ground |
| פין 11 | AVDD — Analog 3.3V supply |
| פין 12 | AVSS — Analog ground |
| פין 13 | SEN — Serial interface enable |
| פין 14 | SCLK — Serial interface clock |
| פין 15 | SDATA — Serial interface data |
| פין 16 | DRVDD — Digital output driver 1.8V supply |
| פין 17 | D0 — Data output bit 0 (LSB) |
| פין 18 | D1 — Data output bit 1 |
| פין 19 | D2 — Data output bit 2 |
| פין 20 | D3 — Data output bit 3 |
| פין 21 | D4 — Data output bit 4 |
| פין 22 | D5 — Data output bit 5 |
| פין 23 | D6 — Data output bit 6 |
| פין 24 | D7 — Data output bit 7 |
| פין 25 | D8 — Data output bit 8 |
| פין 26 | D9 — Data output bit 9 |
| פין 27 | D10 — Data output bit 10 |
| פין 28 | D11 — Data output bit 11 (MSB) |
| פין 29 | DCLK — Output data clock |
| פין 30 | DRVSS — Digital output driver ground |
| פין 31 | DRVDD — Digital output driver 1.8V supply |
| פין 32 | OVR — Out-of-range indicator |
| פין 33 | DRVSS — Digital output driver ground |
| פין 34 | RESET — Hardware reset (active low) |
| פין 35 | PDN — Power-down (active high) |
| פין 36 | SYNC — Multi-device synchronization |
| פין 37 | DRVDD — Digital output driver 1.8V supply |
| פין 38 | DRVSS — Digital output driver ground |
| פין 39 | DVDD — Digital core 1.8V supply |
| פין 40 | DVSS — Digital core ground |
| פין 41 | AVSS — Analog ground |
| פין 42 | AVDD — Analog 3.3V supply |
| פין 43 | AVSS — Analog ground |
| פין 44 | AVDD — Analog 3.3V supply |
| פין 45 | NC — Not connected |
| פין 46 | NC — Not connected |
| פין 47 | NC — Not connected |
| פין 48 | AVSS — Analog ground |
יישומים טיפוסיים
ADS41B29IRGZ25 מתאים עבור 6 יישוםs: 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.
מומלץ
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.
מומלץ
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.
מומלץ
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.
מומלץ
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.
מומלץ
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.
מומלץ
סיכום מוצרים מומלצים
נתוני עזר הנדסיים עבור ADS41B29IRGZ25 — השוואה, הנחיות תכנון ומידע על תאימות.
מדריך בחירה
השוואה עם חלופות
| פרמטר | מוצר זה | 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 |
מבדילים עיקריים
- Integrated analog input buffer eliminates external driver (לעומתADS6129IRGZ25)
- Buffered single-channel 12-bit 250 MSPS in 48-VQFN (לעומתADS62P48IRGC25)
- Lower power at same 250 MSPS speed (לעומתADS41A29IRGZ25)
הערות תכנון
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.
מידע על תאימות
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.
