MAX12558ETK+ - Dual 80Msps 14-Bit IF/Baseband ADC | Maxim Integrated
部品番号: MAX12558ETK+ ✓ 生産中| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $38.5 | $38.50 |
| 10 | $35.1 | $351.00 |
| 100 | $30.85 | $3,085.00 |
| 500 | $27.4 | $13,700.00 |
| 1,000 | $24.95 | $24,950.00 |
MAX12558ETK+ 概要
An analog-to-digital converter (ADC) is a mixed-signal integrated circuit that converts continuous analog input voltages into discrete digital output codes, enabling digital signal processing of real-world signals. The MAX12558 belongs to the IF/baseband sampling ADC class, which sits architecturally between high-speed RF sampling ADCs (gigasample range) and general-purpose successive-approximation ADCs (kilosample range). Within the power-management and data-conversion IC taxonomy, IF-sampling ADCs like the MAX12558 are a sub-class of data converters -> ADC -> pipelined ADC -> mixed-signal IC -> semiconductor. They are typically used after downconversion stages in radio receivers and are valued for their combination of high sampling rate, moderate resolution (14-bit), low power consumption, and integrated T/H front ends that simplify front-end filter design.
Key features include dual simultaneous sampling at 80 Msps per channel, 14-bit resolution, integrated differential T/H inputs, an input bandwidth suitable for direct IF sampling up to 200 MHz, and CMOS-compatible digital outputs. The device operates from a single 3.3V analog supply and a separate 1.7V-3.6V digital supply, allowing direct connection to FPGAs, DSPs, or low-voltage ASICs without level shifting. Internal reference and clock-buffer circuits reduce external BOM.
The MAX12558 uses a multi-stage pipelined architecture with on-chip digital error correction, providing 14-bit linearity at 80 Msps with low latency per stage. The pipelined topology offers a favorable trade-off between sample rate, power consumption, and resolution for communications signal chains. The integrated T/H stage handles wideband differential inputs with high common-mode rejection, which is critical for digitizing noisy IF signals.
Typical applications include cellular base-station receiver digitizers, cable downstream receivers, radar IF processing, medical imaging digitizers, broadband communications test equipment, and multi-channel data-acquisition systems. The dual-channel architecture halves board area for I/Q or diversity receivers.
When designing with the MAX12558, ensure the analog input network is impedance-matched for the desired IF frequency and that the separate AVDD/DVDD rails are properly decoupled to prevent digital switching noise from coupling into the analog front end. The exposed pad on the TQFN-68 package must be soldered to a low-impedance ground plane for thermal dissipation and electrical performance.
This page synthesizes distributor pricing, drop-in package-compatible alternatives from the same Maxim family, and practical layout guidance not collected in any single manufacturer document.
ドロップイン代替品: MAX12558ETK+ — 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: MAX12558ETK+ （同一形状・フットプリント） — 相違点: Resolution, Input Type, Function, Sample Rate, Architecture.
クイック比較ツール — 並列比較する代替部品を選択:
MAX12558ETK+T
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MAX12558ETK+TD
✅ ドロップイン✓ 在庫あり
$19.2 / 個
データシートを見る →MAX12558ETK-D
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
AD9258BCPZ-80
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MAX12528ETK+
✅ ドロップイン✓ 在庫あり
$24.85 / 個
データシートを見る →MAX12558ETK+ 最大定格＆電気的特性
| 機能 | Dual 14-Bit Analog-to-Digital Converter |
| 分解能 | 14 bit |
| Number of Inputs | 2 (dual, simultaneous sampling) |
| Architecture | Pipelined |
| Sample Rate | 80 Msps (80,000 kSamples/s) |
| Input Type | Differential, wideband track-and-hold |
| Analog Supply Voltage | 3.3 V |
| Digital Supply Voltage | 1.7 V to 3.6 V |
| Digital Output Format | Two's complement or Gray code (pin-selectable) |
| Output Interface | CMOS-compatible, two parallel 14-bit buses |
| 動作温度 | -40 C to +85 C (Industrial) |
| Screening Level | Industrial |
| パッケージ | 68-TQFN (10x10 mm, 0.80 mm height, MO-220WNND-2) |
| ピン数 | 68 |
| 実装タイプ | Surface Mount |
| RoHS ステータス | Compliant |
MAX12558ETK+ 68-tqfn (10x10 mm, 0.80 mm height, mo-220wnnd-2) ピン配置ガイド
MAX12558ETK+ (68-tqfn (10x10 mm, 0.80 mm height, mo-220wnnd-2) 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: MAX12558ETK+.
詳細は データシート をご参照ください。
主な用途
MAX12558ETK+ の用途: 6 件s: Cellular Base-Station Receiver Digitizer, Cable Downstream Receiver, Radar IF Processing, Medical Imaging Digitizer, Broadband Communications Test Equipment, Multi-Channel Data Acquisition Systems.
Cellular Base-Station Receiver Digitizer
The MAX12558ETK+ is well-suited for digitizing intermediate-frequency (IF) signals in cellular base-station receivers. Its 80 Msps per-channel sampling on two simultaneous channels captures both I and Q paths from a single IF mixer, halving board area versus two discrete ADCs. The 14-bit resolution delivers the dynamic range needed for multi-carrier GSM/UMTS/LTE signals, and the wideband differential T/H inputs accept IF frequencies up to 200 MHz directly without an external downconversion stage. The separate 1.7V-3.6V digital supply interfaces directly to baseband FPGAs, removing level-shifters and reducing BOM.
おすすめ
Cable Downstream Receiver
The MAX12558ETK+ fits DOCSIS downstream receiver digitizers, where a dual-channel ADC samples the downstream IF at 80 Msps per channel. The 14-bit resolution supports the modulation-error-ratio (MER) requirements for QAM downstream, while the integrated track-and-hold simplifies the front-end filter design between the tuner and the ADC. The CMOS output data format (two's complement or Gray code, pin-selectable) lets the designer optimize coding for either direct FPGA interfacing or pipelined DSP processing downstream.
おすすめ
Radar IF Processing
In radar receiver signal chains, the MAX12558ETK+ serves as the IF digitizer after the radar front-end mixer. Dual-channel sampling at 80 Msps captures the I and Q baseband outputs of a quadrature demodulator, and the 14-bit resolution preserves dynamic range for moving-target-indicator (MTI) and pulse-Doppler processing. The wideband T/H supports pulsed radar IFs with fast settling, and the industrial -40 C to +85 C operating range tolerates outdoor or airborne equipment environments. The exposed pad on the TQFN-68 package must be soldered to a continuous ground plane for thermal dissipation under continuous sampling.
おすすめ
Medical Imaging Digitizer
The MAX12558ETK+ is used in ultrasound and other medical imaging front ends to digitize the post-beamformer analog channels at 80 Msps with 14-bit resolution. The dual-channel architecture simultaneously samples two adjacent receive channels, keeping channel-to-channel skew minimal - critical for beamforming accuracy. The low-voltage CMOS outputs interface directly to image-processing FPGAs at 1.8V or 2.5V, and the differential inputs reject common-mode noise from the analog front end. Industrial temperature grade supports the regulated thermal environment of medical carts and rack-mounted imaging systems.
おすすめ
Broadband Communications Test Equipment
Test and measurement instruments that analyze broadband communication signals - vector signal analyzers, modulation analyzers, and digitizers - rely on the MAX12558ETK+ to capture IF signals with sufficient bandwidth and dynamic range. The 80 Msps sampling rate satisfies analysis bandwidth requirements for many cellular and Wi-Fi waveforms, and the dual channels enable simultaneous capture of reference and device-under-test signals for comparison. The pin-selectable two's complement or Gray code output simplifies synchronization in trigger and capture logic downstream.
おすすめ
Multi-Channel Data Acquisition Systems
Multi-channel data acquisition (DAQ) cards in industrial automation and instrumentation use the MAX12558ETK+ as the per-channel ADC, leveraging its dual simultaneous sampling to double channel density per PCB. The 14-bit resolution covers most industrial sensor signal ranges, and the 80 Msps rate accommodates vibration analysis, sonar, and other wideband transducer signals. The split analog/digital supply rails isolate noisy digital return currents from sensitive analog input stages, and the TQFN-68 package with exposed pad provides a compact footprint with good thermal performance for high channel-count boards.
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: MAX12558ETK+ — 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 | MAX12558ETK+T | MAX12558ETK+TD | MAX12558ETK-D | AD9258BCPZ-80 | MAX12528ETK+ |
|---|---|---|---|---|---|---|
| Brand | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated | Analog Devices | Maxim Integrated |
| Package | TQFN-68 (10x10 mm) | TQFN-68 (10x10 mm) - same | TQFN-68 (10x10 mm) - same | TQFN-68 (10x10 mm) - same | TQFN-68 (10x10 mm) - same | TQFN-68 (10x10 mm) - same |
| Resolution | 14 bit | 14 bit | 14 bit | 14 bit | 14 bit | 12 bit |
| Sample Rate | 80 Msps | 80 Msps | 80 Msps | 80 Msps | 80 Msps | 80 Msps |
| Number of Channels | 2 (dual, simultaneous) | 2 (dual, simultaneous) | 2 (dual, simultaneous) | 2 (dual, simultaneous) | 2 (dual, simultaneous) | 2 (dual, simultaneous) |
| Analog Supply | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V |
| Digital Supply Range | 1.7 V to 3.6 V | 1.7 V to 3.6 V | 1.7 V to 3.6 V | 1.7 V to 3.6 V | 1.7 V to 3.6 V | 1.7 V to 3.6 V |
| Output Format | CMOS, two's complement or Gray code | CMOS, two's complement or Gray code | CMOS, two's complement or Gray code | CMOS, two's complement or Gray code | CMOS, two's complement or Gray code | CMOS, two's complement or Gray code |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
主な差別化要因
- Dual-channel simultaneous sampling at 80 Msps in compact 68-TQFN footprint （vs MAX12528ETK+)
- Split analog/digital supply rails for direct FPGA interfacing （vs AD9258BCPZ-80)
- Pin-selectable two's complement or Gray code output format （vs Generic 14-bit ADC competitors)
設計ノート
Place the analog input network (differential driver, anti-aliasing filter, and coupling capacitors) as close to the IN_A+/IN_A- and IN_B+/IN_B- pins as possible. Route the differential pair with matched impedance (typically 100 ohm differential) and keep the pair tightly coupled over its entire length to preserve common-mode rejection. The TQFN-68 exposed pad must be soldered to a continuous low-impedance ground plane to provide both thermal dissipation and a stable reference for the input T/H stage. Avoid routing digital output traces under or adjacent to the analog input pins to minimize capacitive coupling.
Use separate analog (AVDD) and digital (DVDD) supply planes tied together at a single point near the ADC's supply pins, with 0.1 uF and 10 uF decoupling capacitors on every supply pin. The split-rail architecture is a key benefit of the MAX12558 - keep the digital return currents isolated from the analog input stage return. A ferrite bead between the analog and digital supplies can further reduce switching-noise coupling in noisy environments.
Do not omit the input common-mode bias voltage; the MAX12558 differential inputs require an external common-mode reference (typically AVDD/2 generated by a low-noise op-amp or resistor divider) to set the input operating point. Floating inputs can saturate the T/H and produce invalid codes. Also confirm the output data format selection (two's complement vs Gray code) matches the downstream FPGA or DSP capture logic before layout freeze - format selection is pin-strapped and cannot be changed in software.
The CMOS output bus transitions at high speed (80 Msps x 14 bits per channel = 1.12 Gbps aggregate). Match the length of each output bit to within ~1 mm to minimize skew, and use a 22 ohm to 33 ohm series-termination resistor near the ADC output pins to damp reflections on the FPGA-side traces. Place a ground reference plane directly under the output traces to control impedance. If the FPGA is more than 50 mm away, consider buffering the outputs with low-skew clock-driver ICs.
コンプライアンス情報
RoHS compliant per Maxim Integrated product page (the '+' suffix in the part number denotes RoHS-compliant lead-free finish). Industrial temperature screening only - not AEC-Q100 qualified. REACH compliance not explicitly stated in the provided data; conflict minerals compliance per Maxim standard policy.
