ADC3242IRGZ25 - Dual 14-Bit 50MSPS ADC | Texas Instruments
部品番号: ADC3242IRGZ25 ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $11.5 | $11.50 |
| 10 | $10.35 | $103.50 |
| 100 | $9.18 | $918.00 |
| 500 | $8.25 | $4,125.00 |
| 1,000 | $7.4 | $7,400.00 |
ADC3242IRGZ25 概要
An analog-to-digital converter (ADC) is a data-conversion integrated circuit that samples a continuous-time, continuous-amplitude analog input and produces a discrete-time, discrete-amplitude digital output. Within the broader data-converter hierarchy, the ADC3242 belongs to the pipelined-ADC sub-class, which sits between precision successive-approximation (SAR) ADCs (used at low sample rates) and high-speed flash / folding ADCs (used at GHz rates). As a power-management-aware pipeline ADC, the ADC3242 delivers 14-bit resolution at sample rates up to 50 MSPS with significantly lower power than older 14-bit pipelines, placing it in the 'mid-rate precision pipeline' category used in LTE base-station observation paths, multi-carrier GSM receivers, and medical imaging AFE front-ends.
Key features of the ADC3242IRGZ25 include 70.7 dBFS SNR at 50 MSPS with a 30 MHz input, 85 dBc SFDR with a 30 MHz input, ultra-low power at approximately 71 mW per channel at 50 MSPS, an internal 1.8 V LDO for analog supply regulation, an LVDS interface for low-EMI digital output, and per-channel digital gain and offset correction. The device operates from a 1.7 V to 1.9 V AVDD and 1.7 V to 1.9 V DRVDD supply, with a -40C to +85C industrial temperature range.
Design considerations include providing adequate 1.8 V supply decoupling on each analog supply pin and routing LVDS output pairs with 100 ohm differential impedance to minimize reflections on the digital data bus. The ADC3242's internal LDO relaxes external regulator noise requirements, but a clean low-ripple source is still recommended for optimal spurious performance.
ドロップイン代替品: ADC3242IRGZ25 — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: ADC3242IRGZ25 （同一形状・フットプリント） — 相違点: Package, Supply Voltage, Operating Temperature Range, SFDR, SNR.
クイック比較ツール — 並列比較する代替部品を選択:
ADC3223IRGZ25
✅ ドロップイン✓ 在庫あり
$11.98 / 個
データシートを見る →ADC3241IRGZ25
✅ ドロップイン✓ 在庫あり
$15.2 / 個
データシートを見る →ADC3242IRGZ25 最大定格＆電気的特性
| 分解能 | 14 bit |
| Number of Channels | 2 |
| Sample Rate | 50 MSPS |
| Architecture | Pipelined |
| Input Type | Differential |
| Analog Supply Voltage (AVDD) | 1.7 V to 1.9 V (1.8 V nominal) |
| Digital Supply Voltage (DRVDD) | 1.7 V to 1.9 V (1.8 V nominal) |
| Power Dissipation | 71 mW per channel at 50 MSPS (typical) |
| SNR | 70.7 dBFS at fIN = 30 MHz, fS = 50 MSPS |
| SFDR | 85 dBc at fIN = 30 MHz, fS = 50 MSPS |
| Digital Output Interface | LVDS |
| ENOB | 11.4 bit (typical, fIN = 30 MHz, fS = 50 MSPS) |
| パッケージ | 48-pin VQFN (RGZ), 7x7 mm |
| 動作温度範囲 | -40C to +85C |
| 実装タイプ | Surface Mount |
| MSLレベル | 3 |
| RoHS ステータス | Compliant |
ADC3242IRGZ25 48-pin vqfn (rgz), 7x7 mm ピン配置ガイド
ADC3242IRGZ25 (48-pin vqfn (rgz), 7x7 mm パッケージ) のピン配置。 このアナログコンポーネントは、入力、出力、および電源ピンを備えています。オフセットナル、補償、イネーブルピンの設定については、メーカーのデータシートを参照してください。信号調整やアンプ回路に最適です。
詳細なピン配置データはありません: ADC3242IRGZ25.
詳細は データシート をご参照ください。
主な用途
ADC3242IRGZ25 の用途: 6 件s: Medical Ultrasound Receive Front-End, Communications Observation Receiver, Portable Test and Measurement Instrumentation, Multi-Carrier GSM/EDGE Base Station Receiver, Industrial Vibration Analysis DAQ, Software Defined Radio (SDR) IF Digitizer.
Medical Ultrasound Receive Front-End
The ADC3242IRGZ25's dual 14-bit channels at 50 MSPS with 70.7 dBFS SNR deliver 11.4 ENOB - exactly the dynamic range ultrasound phased-array receivers need for RF-mode imaging at 5-15 MHz IF. The per-channel power of 71 mW keeps the multi-element probe thermal envelope manageable; place one ADC3242 per two receive channels in parallel to scale to 32/64/128-element arrays. The LVDS output couples cleanly into a TI ultrasound AFE like the AFE5808A/AFE5850.
おすすめ
Communications Observation Receiver
Wireless observation receivers need 12-14 bit dynamic range at IF frequencies from 30 to 200 MHz and sample rates high enough to capture multi-carrier GSM/LTE/5G NR bands. The ADC3242IRGZ25's 70.7 dBFS SNR, 85 dBc SFDR at 30 MHz input, and LVDS digital interface make it a strong fit for IF-sampling base-station and signal-intelligence receivers. Its internal analog LDO relaxes power-rail noise requirements, while the dual-channel architecture halves board area in dual-polarity antenna configurations.
おすすめ
Portable Test and Measurement Instrumentation
Handheld oscilloscope, spectrum analyzer, and logic-analyzer front-ends demand 12-14 bit dynamic range at 50-100 MSPS for accurate waveform capture of baseband and lower-IF signals. The ADC3242IRGZ25's 11.4 ENOB at 30 MHz input and 71 mW per channel power fit portable battery-powered designs where size and efficiency matter. Its compact 7x7 mm VQFN footprint saves PCB area for the digital display and signal-processing sections of compact bench instruments.
おすすめ
Multi-Carrier GSM/EDGE Base Station Receiver
GSM/EDGE base-station receivers must digitize the antenna mast signal at 30-65 MSPS with sufficient dynamic range to handle multi-carrier aggregated signals and blocking scenarios. The ADC3242IRGZ25's 14-bit resolution and 70.7 dBFS SNR at 30 MHz input provide comfortable margin in the presence of strong interferers. Running the LVDS interface at 50 MSPS reduces downstream buffering and simplifies timing closure into an FPGA digital down-converter.
おすすめ
Industrial Vibration Analysis DAQ
Condition monitoring systems sample vibration and acoustic emissions from rotating machinery at 20-50 kHz sample rates; the ADC3242IRGZ25 provides ample headroom for 14-bit envelope and FFT analysis at 50 MSPS. Its dual channels capture two simultaneous accelerometer channels - one per axis in a triaxial sensor (third axis handled by an additional ADC3242 device or pin-compatible ADC3241 at 25 MSPS). The industrial -40C to +85C temperature range supports factory-floor deployment near motors and variable-frequency drives.
おすすめ
Software Defined Radio (SDR) IF Digitizer
Modern SDR radio designs digitize the IF stage directly rather than relying on analog demodulators; this requires 12-14 bit dynamic range at 50-100 MSPS into an FPGA. The ADC3242IRGZ25's LVDS output, 70.7 dBFS SNR at 30 MHz input, and 1.8 V supply align with mid-range SDR designs targeting HF/VHF/UHF receivers and amateur-radio transceivers. The internal LDO on the analog supply eases the power-tree design and reduces external passive component count.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: ADC3242IRGZ25 — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | ADC3223IRGZ25 | ADC3241IRGZ25 |
|---|---|---|---|
| Brand | Texas Instruments | Texas Instruments | Texas Instruments |
| Package | 48-VQFN (RGZ) 7x7 mm | 48-VQFN (RGZ) 7x7 mm - same | 48-VQFN (RGZ) 7x7 mm - same |
| Resolution | 14 bit | 12 bit (-2 bit) | 14 bit (same) |
| Sample Rate | 50 MSPS | 50 MSPS (same) | 25 MSPS (-50%) |
| Number of Channels | 2 | 2 (same) | 2 (same) |
| Architecture | Pipelined | Pipelined (same) | Pipelined (same) |
| Digital Interface | LVDS | LVDS (same) | LVDS (same) |
| Supply Voltage | 1.8 V AVDD / 1.8 V DRVDD | 1.8 V / 1.8 V (same) | 1.8 V / 1.8 V (same) |
主な差別化要因
- Higher 50 MSPS sample rate for the same resolution vs ADC3223 family （vs ADC3223IRGZ25)
- Twin upgrade path for both resolution and sample-rate tuning （vs ADC3241IRGZ25)
- Internal analog LDO reduces BOM and simplifies power tree （vs External LDO + non-LDO ADC topologies)
設計ノート
Estimated: total board power for the ADC3242IRGZ25 at 50 MSPS is approximately 2 x 71 mW = 142 mW for both channels combined. Provide a 1.8 V low-noise LDO (such as TPS7A4700RGWR) on both AVDD and DRVDD with 1 uF + 0.1 uF ceramic bypass caps at each ADC supply pin. A ferrite bead separating AVDD and DRVDD reduces digital switching noise coupling into the analog domain; targeting 60 dB power-supply rejection at clock-fundamental frequency.
Route the LVDS output pairs as 100 ohm differential transmission lines on the top layer over a continuous ground plane. Match pair lengths within 100 mil (2.5 mm) to avoid skew artifacts at the receiver. Place the digital LVDS section physically separated from the analog input network to avoid coupling. The 48-VQFN EP must be soldered to a minimum 4x4 mm grounded copper pad with at least 5 thermal vias for the 71 mW dissipation per channel.
Avoid using a noisy switching regulator on AVDD - even with the internal LDO, residual switching ripple above 1 MHz can degrade SFDR by 6-10 dB. Use a linear regulator downstream of the switching pre-regulator. Estimated: a 100 mVpp 10 MHz switching ripple on AVDD can degrade 85 dBc SFDR down to 70 dBc at 50 MSPS. Provide a clean CMOS clock to CLK+/-, preferring low-jitter sources such as TI's CDCE62005; clock jitter above 1 ps rms directly reduces SNR.
コンプライアンス情報
RoHS compliant per TI product page as of 2026-10-12. Industrial temperature grade only (no automotive Q1 variant in same datasheet). 'RGZ' suffix indicates lead-free Pb-free terminal finish.
