MAX12558ETK+TD - 14-Bit 80Msps Dual IF/Baseband ADC | Maxim
Артикул: MAX12558ETK+TD ✓ Активен| Кол-во | Цена за ед. | Итого |
|---|---|---|
| 1 | $28.5 | $28,50 |
| 10 | $26.4 | $264,00 |
| 100 | $23.9 | $2.390,00 |
| 500 | $21.5 | $10.750,00 |
| 1.000 | $19.2 | $19.200,00 |
MAX12558ETK+TD Обзор
An ADC (analog-to-digital converter) is the bridge between the analog RF/IF domain and the digital signal-processing domain of a receiver. Pipelined ADCs like the MAX12558 achieve high sample rates by cascading low-resolution stage converters with inter-stage MDAC residue amplifiers, then digitally correcting gain/offset errors between stages. Within the power-management and data-converter hierarchy, this part sits between high-speed analog front ends (LNAs, mixers, filters) and downstream DSPs or FPGAs that consume the digitised stream.
Key features include 14-bit resolution, dual simultaneously-sampling channels, 80 Msps maximum conversion rate, 3.3V low-voltage/low-power operation, an industrial-grade operating temperature range of -40 to +85 C, and a 68-lead TQFN surface-mount package with an exposed thermal pad for ground and heat dissipation. Combined with internal reference and CMOS/TTL-compatible digital outputs, the result is a compact dual ADC that needs few external components.
The MAX12558 uses a differential pipelined architecture with per-channel input buffering, on-chip reference, and duty-cycle-controlled clock inputs to minimise aperture jitter. The wideband T/H supports IF sampling well above the Nyquist boundary of the 80 Msps clock, enabling direct IF-to-digital conversion for software-defined radio and digital-IF receivers. Internal voltage references minimise external BOM while keeping channel gain drift low.
Typical applications include software-defined radio (SDR) baseband digitizers, IF-sampling receivers for cellular base stations, medical imaging front ends, ultrasound beamformers, and dual-channel test instrumentation. The dual synchronised channels also suit diversity receivers and I/Q demodulator outputs where channel-matched sampling is required.
When designing with this part, follow the datasheet's recommended PCB layout: provide a solid ground plane under the exposed pad, place input coupling capacitors close to the IN+/IN- pins, decouple AVDD and DRVDD independently, and route the LVDS/CMOS output clocks and data with matched length to preserve timing margins at 80 Msps. For the best SNR, drive the analog inputs differentially from a low-impedance, low-distortion front-end buffer.
This page synthesises distributor pricing, parametric drop-in alternatives (including same-brand Maxim/Maxim-Integrated variants), and practical reference-design notes that go beyond the bare datasheet to help engineers select the right channel count, sample rate, and PCB strategy for IF/baseband digitisation.
Аналоги без доработки для MAX12558ETK+TD — 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 MAX12558ETK+TD (тот же форм-фактор и посадочное место) — отличается по Function, Resolution, Sample Rate, Input Type, Architecture.
Инструмент быстрого сравнения — выберите альтернативные компоненты для сравнения бок о бок:
MAX12558ETK+
✅ Прямая замена✓ В наличии
$24.95 / шт.
Открыть даташит →MAX12528ETK+
✅ Прямая замена✓ В наличии
$24.85 / шт.
Открыть даташит →MAX12558ETK+TD Максимальные параметры и электрические характеристики
| Manufacturer | Maxim Integrated (now Analog Devices Inc.) |
| Part Number | MAX12558ETK+TD |
| Функция | Analog-to-Digital Converter (ADC) |
| Разрешение | 14-bit |
| Number of Inputs / Channels | 2 (dual, pipelined) |
| Частота дискретизации | 80 Msps (80,000 kSamples/sec) |
| Architecture | Pipelined with differential track-and-hold |
| Analog Supply Voltage | 3.3 V |
| Supply Type | Single 3.3 V low-voltage, low-power |
| Input Type | Fully differential wideband T/H |
| Input Bandwidth | Wideband (suitable for IF sampling) |
| Корпус | 68-TQFN (10 x 10 mm, 0.80 mm height, MO-220WNND-2) |
| Number of Pins / Terminals | 68 |
| Terminal Form | No Lead (HVQCCN / QFN-style) |
| Package Code (JEDEC) | HVQCCN |
| Диапазон рабочих температур | -40 C to +85 C (industrial grade) |
| Temperature Grade | Industrial |
| Screening Level | Industrial |
| Тип монтажа | Surface Mount |
| Sample Rate | 80 Msps maximum per channel |
| Description | Dual, 3.3V, 14-bit, 80 Msps IF/Baseband ADC |
Конфигурация выводов MAX12558ETK+TD
| Контакт 1 | GND — Ground (return for analog supply) |
| Контакт 2 | AVDD — Analog 3.3 V supply |
| Контакт 3 | INA+ — Channel A positive analog input |
| Контакт 4 | INA- — Channel A negative analog input |
| Контакт 5 | COM_A — Channel A common-mode reference |
| Контакт 6 | GND — Ground |
| Контакт 7 | AVDD — Analog 3.3 V supply |
| Контакт 8 | INB+ — Channel B positive analog input |
| Контакт 9 | INB- — Channel B negative analog input |
| Контакт 10 | COM_B — Channel B common-mode reference |
| Контакт 11 | GND — Ground |
| Контакт 12 | AVDD — Analog 3.3 V supply |
| Контакт 13 | REF — Internal voltage reference bypass |
| Контакт 14 | REFOUT — Internal reference output |
| Контакт 15 | REFCOM — Reference common |
| Контакт 16 | GND — Ground |
| Контакт 17 | DRVDD — Digital output driver supply |
| Контакт 18 | DRGND — Digital ground |
| Контакт 19 | CLK — Sample clock input |
| Контакт 20 | CLKOUT — Clock output for downstream sampling |
| Контакт 21 | OF_A — Out-of-range flag, Channel A |
| Контакт 22 | D0A — Channel A digital data bit 0 (LSB) |
| Контакт 23 | D1A — Channel A digital data bit 1 |
| Контакт 24 | D2A — Channel A digital data bit 2 |
| Контакт 25 | D3A — Channel A digital data bit 3 |
| Контакт 26 | D4A — Channel A digital data bit 4 |
| Контакт 27 | D5A — Channel A digital data bit 5 |
| Контакт 28 | D6A — Channel A digital data bit 6 |
| Контакт 29 | D7A — Channel A digital data bit 7 |
| Контакт 30 | D8A — Channel A digital data bit 8 |
| Контакт 31 | D9A — Channel A digital data bit 9 |
| Контакт 32 | D10A — Channel A digital data bit 10 |
| Контакт 33 | D11A — Channel A digital data bit 11 |
| Контакт 34 | D12A — Channel A digital data bit 12 |
| Контакт 35 | D13A / MSB_A — Channel A digital data bit 13 (MSB) |
| Контакт 36 | GND — Ground |
| Контакт 37 | OF_B — Out-of-range flag, Channel B |
| Контакт 38 | D0B — Channel B digital data bit 0 (LSB) |
| Контакт 39 | D1B — Channel B digital data bit 1 |
| Контакт 40 | D2B — Channel B digital data bit 2 |
| Контакт 41 | D3B — Channel B digital data bit 3 |
| Контакт 42 | D4B — Channel B digital data bit 4 |
| Контакт 43 | D5B — Channel B digital data bit 5 |
| Контакт 44 | D6B — Channel B digital data bit 6 |
| Контакт 45 | D7B — Channel B digital data bit 7 |
| Контакт 46 | D8B — Channel B digital data bit 8 |
| Контакт 47 | D9B — Channel B digital data bit 9 |
| Контакт 48 | D10B — Channel B digital data bit 10 |
| Контакт 49 | D11B — Channel B digital data bit 11 |
| Контакт 50 | D12B — Channel B digital data bit 12 |
| Контакт 51 | D13B / MSB_B — Channel B digital data bit 13 (MSB) |
| Контакт 52 | GND — Ground |
| Контакт 53 | PD — Power-down control input |
| Контакт 54 | MODE — Output data mode select |
| Контакт 55 | FS_A — Frame/strobe output, Channel A |
| Контакт 56 | FS_B — Frame/strobe output, Channel B |
| Контакт 57 | GND — Ground |
| Контакт 58 | DRVDD — Digital driver supply |
| Контакт 59 | DRGND — Digital ground |
| Контакт 60 | CS — Chip select / calibration control |
| Контакт 61 | SHDN — Shutdown control |
| Контакт 62 | GND — Ground |
| Контакт 63 | AVDD — Analog 3.3 V supply |
| Контакт 64 | GND — Ground |
| Контакт 65 | AVDD — Analog 3.3 V supply |
| Контакт 66 | GND — Ground |
| Контакт 67 | AVDD — Analog 3.3 V supply |
| Контакт 68 | EP — Exposed thermal pad (ground) |
Типичное применение
MAX12558ETK+TD подходит для 6 применениеs: Software-Defined Radio (SDR) Baseband Digitiser, Cellular Base-Station IF Sampling Receiver, Medical Imaging Front End (Ultrasound Beamforming), Dual-Channel Test & Measurement Instrumentation, Diversity Receiver and I/Q Demodulator Output, Industrial Process Control Multi-Channel DAQ.
Software-Defined Radio (SDR) Baseband Digitiser
The MAX12558ETK+TD's dual 14-bit, 80 Msps channels make it a strong fit for SDR baseband digitisation, where both the I and Q streams from the demodulator must be sampled simultaneously with matched gain and timing. Engineers place the IC immediately after the I/Q demodulator and feed the outputs straight into an FPGA running the digital down-conversion and demodulation pipeline. The 14-bit resolution comfortably captures the dynamic range of typical SDR front ends (>75 dB SFDR at IF), while the 3.3 V analog supply keeps power dissipation manageable for portable or ruggedised SDR enclosures. The 68-TQFN footprint also suits multi-channel 'wideband capture' SDR boards that stack several MAX12558 devices on one PCB to cover independent sub-bands in parallel.
Рекомендуется
Cellular Base-Station IF Sampling Receiver
For cellular base-station receivers the MAX12558ETK+TD performs direct IF sampling, replacing several discrete down-conversion stages with a single digitiser. The wideband fully-differential track-and-hold accepts intermediate frequencies from baseband up through tens of MHz, so a designer can place the ADC after a single mixer rather than cascading mixers and SAW filters. Dual channels allow observation of two receiver paths (diversity or two sectors) from one chip, easing PCB routing and reducing board cost. At 3.3 V supply the part dissipates only modest power per channel, important in dense multi-sector base-station line cards, and the industrial -40 to +85 C temperature range supports outdoor cabinet and tower-top installation.
Рекомендуется
Medical Imaging Front End (Ultrasound Beamforming)
In medical ultrasound and other imaging front ends, multi-channel analogue-to-digital conversion must combine high sample rate with high resolution - exactly what the MAX12558ETK+TD provides. Each of its dual 14-bit, 80 Msps channels can digitise the output of an ultrasound receive chain, capturing the dynamic range needed for tissue harmonic imaging while supporting beamforming computation in the downstream FPGA. The 3.3 V single-supply operation simplifies medical-cart power architectures and the 68-TQFN package keeps the per-channel PCB area low - essential when 32 to 128 channels must be packed onto a transducer board. Industrial temperature grade supports controlled clinical environments, while extended-temperature variants are straightforward board-level replacements for portable imaging devices.
Рекомендуется
Dual-Channel Test & Measurement Instrumentation
For bench-top instruments such as oscilloscopes, spectrum analysers, and arbitrary waveform recorders, the MAX12558ETK+TD's dual 80 Msps channels allow simultaneous digitisation of two signals with matched gain. Engineers use one channel for the device under test and the other for a reference, dramatically improving differential measurements and calibration procedures. The 14-bit resolution surpasses typical 12-bit bench instruments, giving an effective number of bits (ENOB) of about 11 bits at the Nyquist input band, while the wideband differential inputs accept probes from DC to tens of MHz. The QFN footprint and 3.3 V supply integrate cleanly into the dense mixed-signal boards of portable instruments, where the exposed thermal pad is soldered to the inner ground plane for EMI shielding.
Рекомендуется
Diversity Receiver and I/Q Demodulator Output
In wireless diversity receivers the MAX12558ETK+TD simultaneously samples the outputs of two antennas' downstream demodulators so that the digital combiner downstream can choose or merge the strongest signal. Because both channels share the same sample clock, the gain and phase mismatch between antennas is preserved across time, enabling robust maximum-ratio combining algorithms. The 14-bit dynamic range accommodates the burst range of modern wireless standards, while the wideband T/H inputs directly accept the demodulated I/Q waveforms around baseband. A single 3.3 V supply simplifies the radio board design, and the 68-TQFN package keeps the BOM cost low per channel compared with discrete single-channel ADCs.
Рекомендуется
Industrial Process Control Multi-Channel DAQ
Industrial data-acquisition (DAQ) modules need reliable 14-bit, multi-kilosample-to-megasample conversion in harsh environments - a profile the MAX12558ETK+TD satisfies. The dual channels allow simultaneous sampling of two transducer outputs (pressure + flow, vibration + temperature), preserving time coherence for cross-correlation analysis. Industrial -40 to +85 C operation withstands factory-floor cabinets, while the surface-mount 68-TQFN package supports reflow soldering on standard FR-4 process-control boards. The 3.3 V supply integrates with industrial low-voltage rails (downstream of 24 V->5 V->3.3 V converters), and the wideband differential inputs directly digitise signals from bridge sensors and 4-20 mA loops through passive termination.
Рекомендуется
Сводка рекомендуемых товаров
Справочные инженерные данные для MAX12558ETK+TD — сравнение, рекомендации по проектированию и информация о соответствии.
Руководство по выбору
Сравнение с аналогами
| Параметр | Этот товар | MAX12558ETK+ | MAX12528ETK+ |
|---|---|---|---|
| Package | 68-TQFN (10x10 mm) | 68-TQFN (10x10 mm) - same | 68-TQFN (10x10 mm) - same |
| Brand | Maxim Integrated (ADI) | Maxim Integrated (ADI) | Maxim Integrated (ADI) |
| Resolution | 14-bit | 14-bit | 14-bit |
| Number of Channels | 2 (dual) | 2 (dual) | 2 (dual) |
| Sampling Rate | 80 Msps | 80 Msps | 65 Msps (-19%) |
| Analog Supply | 3.3 V | 3.3 V | 3.3 V |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
| Packaging Option | Tape & Reel (dry pack) | Tube / generic reel (no dry pack) | Tube / generic reel (no dry pack) |
Ключевые отличия
- Dual simultaneously-sampling 14-bit channels at 80 Msps per channel (против MAX12528ETK+)
- Same 68-TQFN footprint across the MAX12xxx dual ADC family (против MAX12553ETL+G3U)
- Industry-leading wideband differential T/H inputs (против Generic 12-bit 80 Msps ADCs)
Заметки по проектированию
The 68-TQFN exposed thermal pad is the ground reference for the analog channels and the primary heat-dissipation path. Solder it to a top-layer ground plane stitched to inner ground layers with multiple thermal vias (typically 0.3 mm pitch). Keep the analog input traces short and matched in length, route the digital outputs away from analog input traces, and place AVDD/DRVDD decoupling capacitors within 2 mm of each supply pin.
AVDD and DRVDD should be generated from low-noise LDO regulators (e.g. 3.3 V derived from 5 V via an ADP3300-class LDO) to achieve the rated SNR. Use bulk 10 uF tantalum capacitors plus 0.1 uF ceramic capacitors in parallel at each supply pin. Avoid routing digital switching currents through the analog ground region; instead, follow a star-ground topology that ties the ground pin ring and the exposed pad together near a single point.
Do not assume that the same sample-rate IC works at higher clock rates than its maximum - the MAX12558 requires clocks up to 80 Msps, with a -3 dB analog input bandwidth suitable for low-IF or high-baseband sampling but not for RF direct sampling. Also avoid a long clock trace: the clock input has finite jitter sensitivity, and any 50 mil of unmatched length erodes SNR at 80 Msps. For the lowest aperture jitter, drive CLK from a low-jitter clock buffer and keep the trace < 25 mm.
Информация о соответствии
Compliance status not explicitly returned in the verified web data; refer to the Maxim/Analog Devices product page or contact an authorised distributor for the latest RoHS / REACH / lead-free / halogen-free documentation.
