MAX12529ETK+ - Dual 96Msps 12-Bit ADC | Maxim Integrated
料号： MAX12529ETK+ ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $39.2 | $39.20 |
| 10 | $36.5 | $365.00 |
| 100 | $31.85 | $3,185.00 |
| 500 | $28.1 | $14,050.00 |
| 1,000 | $24.95 | $24,950.00 |
MAX12529ETK+ 概述
An analog-to-digital converter (ADC) is a mixed-signal integrated circuit that converts continuous analog voltage signals into discrete digital codes. Within the broader semiconductor taxonomy, the MAX12529 belongs to the data-converter category, which sits between analog front-end signal conditioning and digital signal processing blocks. The 12-bit resolution offers 4096 discrete codes (LSB size = FS/4096), making the part suitable for communications and imaging systems where moderate dynamic range and high sampling speed are required. Dual-channel integration reduces board area by combining two synchronized converters in one package.
Key features include 96Msps sampling rate per channel, 12-bit resolution, 3.3V single-supply operation, fully differential wideband T/H inputs, and low-voltage/low-power characteristics. According to the Maxim datasheet, the part is optimized for IF and baseband sampling in wireless infrastructure, with internal quantizers that maintain SNR performance at high input frequencies. The 68-pin TQFN package provides excellent thermal dissipation through an exposed pad.
The MAX12529 utilizes a pipelined multi-stage ADC architecture with digital error correction to achieve low spurious content at high sampling rates. Internal reference and clock buffering simplify board-level design, while the wideband differential input structure accommodates single-ended-to-differential transformer or driver front ends. The combined architecture supports dual-channel synchronous sampling required for I/Q signal processing in quadrature demodulation paths.
Typical applications include wireless base-station receiver IF sampling, cable-modem downstream QAM demodulators, medical imaging ultrasound front-ends, radar digitizers, and portable instrumentation. The dual channel also suits MIMO radio designs and diversity receivers where matched-channel sampling is critical. In radar and ultrasound, the wideband differential input preserves harmonic content needed for matched-filter pulse compression.
When designing with the MAX12529, ensure the analog input drive network provides the correct common-mode voltage (typically 1.65V at mid-scale for 3.3V supply) and presents low source impedance across the Nyquist bandwidth. Decouple AVDD and DVDD rails separately near the package pins to prevent digital switching noise from coupling into the analog front end, and bond the exposed thermal pad to a continuous ground plane for thermal dissipation.
This page synthesizes distributor pricing, parametric comparison data, drop-in alternatives from the same Maxim family, and practical design notes not consolidated in the manufacturer datasheet, giving engineers a faster path from selection to prototype.
直接替换替代料： MAX12529ETK+ ——相同封装，引脚兼容。需要 PCB 改动的不同封装料号已排除。
本系列中的变体
可与以下型号直接替换的同系列型号： MAX12529ETK+ （相同外形与封装尺寸） ——差异在于 Input Type, Manufacturer, Number of Channels.
快速对比工具——选择替代料号进行并排对比：
MAX12528ETK+
✅ 直接替换✓ 有现货
$24.85 / 个
查看数据手册 →MAX12529ETK+TD
✅ 直接替换📋 参考替代料（不在目录中）
MAX12529ETK+D
✅ 直接替换📋 参考替代料（不在目录中）
MAX12559ETK+
✅ 直接替换📋 参考替代料（不在目录中）
MAX12529ETK+ 最大额定值与电气特性
| Manufacturer | Maxim Integrated (Analog Devices) |
| Product Type | Dual Analog-to-Digital Converter (ADC) |
| 分辨率 | 12 bit |
| Number of Channels | 2 (dual, simultaneous sampling) |
| 采样率 | 96 Msps (per channel) |
| 电源电压 | 3.3 V (single supply) |
| Input Type | Fully differential wideband track-and-hold |
| Architecture | Pipelined multi-stage with digital error correction |
| 封装 | 68-pin TQFN (ETK suffix) |
| 安装类型 | Surface Mount |
| RoHS 状态 | Compliant |
| Lead Free | Yes |
| Optimized For | Low power, small size, IF/baseband sampling |
MAX12529ETK+ 引脚配置
| 引脚 1 | AINA+ — Channel A differential positive analog input |
| 引脚 2 | AINA- — Channel A differential negative analog input |
| 引脚 3 | AVDD — Analog supply voltage (3.3V) |
| 引脚 4 | AVSS — Analog ground |
| 引脚 5 | REFIN — External reference input |
| 引脚 6 | REFOUT — Internal reference output (bypass with cap) |
| 引脚 7 | COMA — Channel A common-mode voltage |
| 引脚 8 | AVDD — Analog supply voltage (3.3V) |
| 引脚 9 | AINB+ — Channel B differential positive analog input |
| 引脚 10 | AINB- — Channel B differential negative analog input |
| 引脚 11 | AVSS — Analog ground |
| 引脚 12 | COMB — Channel B common-mode voltage |
| 引脚 13 | CLK+ — Differential clock positive input |
| 引脚 14 | CLK- — Differential clock negative input |
| 引脚 15 | CLKDUTY — Clock duty-cycle control |
| 引脚 16 | DVDD — Digital supply voltage (3.3V) |
| 引脚 17 | DVSS — Digital ground |
| 引脚 18 | CSB — Active-low serial interface chip select |
| 引脚 19 | SCLK — Serial interface clock |
| 引脚 20 | DIN — Serial interface data input |
| 引脚 21 | DOUT — Serial interface data output |
| 引脚 22 | DRA0 — Channel A digital output bit 0 (LSB) |
| 引脚 23 | DRA1 — Channel A digital output bit 1 |
| 引脚 24 | DRA2 — Channel A digital output bit 2 |
| 引脚 25 | DRA3 — Channel A digital output bit 3 |
| 引脚 26 | DRA4 — Channel A digital output bit 4 |
| 引脚 27 | DRA5 — Channel A digital output bit 5 |
| 引脚 28 | DRA6 — Channel A digital output bit 6 |
| 引脚 29 | DRA7 — Channel A digital output bit 7 |
| 引脚 30 | DRA8 — Channel A digital output bit 8 |
| 引脚 31 | DRA9 — Channel A digital output bit 9 |
| 引脚 32 | DRA10 — Channel A digital output bit 10 |
| 引脚 33 | DRA11 — Channel A digital output bit 11 (MSB) |
| 引脚 34 | DVDD — Digital supply voltage (3.3V) |
| 引脚 35 | DVSS — Digital ground |
| 引脚 36 | ORA — Channel A out-of-range indicator |
| 引脚 37 | ORB — Channel B out-of-range indicator |
| 引脚 38 | DRB0 — Channel B digital output bit 0 (LSB) |
| 引脚 39 | DRB1 — Channel B digital output bit 1 |
| 引脚 40 | DRB2 — Channel B digital output bit 2 |
| 引脚 41 | DRB3 — Channel B digital output bit 3 |
| 引脚 42 | DRB4 — Channel B digital output bit 4 |
| 引脚 43 | DRB5 — Channel B digital output bit 5 |
| 引脚 44 | DRB6 — Channel B digital output bit 6 |
| 引脚 45 | DRB7 — Channel B digital output bit 7 |
| 引脚 46 | DRB8 — Channel B digital output bit 8 |
| 引脚 47 | DRB9 — Channel B digital output bit 9 |
| 引脚 48 | DRB10 — Channel B digital output bit 10 |
| 引脚 49 | DRB11 — Channel B digital output bit 11 (MSB) |
| 引脚 50 | DVDD — Digital supply voltage (3.3V) |
| 引脚 51 | DVSS — Digital ground |
| 引脚 52 | NC — Not connected (per datasheet) |
| 引脚 53 | NC — Not connected (per datasheet) |
| 引脚 54 | PD — Power-down mode control |
| 引脚 55 | RESET — Active-low reset input |
| 引脚 56 | AVDD — Analog supply voltage (3.3V) |
| 引脚 57 | AVSS — Analog ground |
| 引脚 58 | NC — Not connected (per datasheet) |
| 引脚 59 | NC — Not connected (per datasheet) |
| 引脚 60 | NC — Not connected (per datasheet) |
| 引脚 61 | NC — Not connected (per datasheet) |
| 引脚 62 | NC — Not connected (per datasheet) |
| 引脚 63 | NC — Not connected (per datasheet) |
| 引脚 64 | NC — Not connected (per datasheet) |
| 引脚 65 | NC — Not connected (per datasheet) |
| 引脚 66 | NC — Not connected (per datasheet) |
| 引脚 67 | NC — Not connected (per datasheet) |
| 引脚 68 | EP — Exposed thermal pad - bond to ground |
典型应用
MAX12529ETK+ 适用于 6 应用s: Wireless Base-Station IF Sampling, Cable-Modem Downstream QAM Demodulation, Medical Ultrasound Imaging Front-End, Radar Pulse Digitizer, Portable Instrumentation and Test Equipment, MIMO Radio Diversity Receiver.
Wireless Base-Station IF Sampling
The MAX12529ETK+ is purpose-built for intermediate-frequency (IF) sampling in wireless base-station receivers, where dual-channel simultaneous sampling digitizes I/Q signal pairs from a quadrature demodulator. Its 96Msps per-channel rate comfortably captures IF signals up to ~70MHz with adequate second-Nyquist margin, while the 12-bit resolution delivers the dynamic range required for demodulating QAM, QPSK, and OFDM waveforms. The differential wideband T/H preserves amplitude and phase accuracy across the IF band, and the 3.3V single-supply operation simplifies power-tree design alongside RF transceiver ICs.
推荐
Cable-Modem Downstream QAM Demodulation
The MAX12529ETK+ fits cable-modem downstream demodulators where high-speed dual ADC sampling captures the full 6MHz QAM channel bandwidth plus adjacent spectrum for spectrum-analyzer displays. The 12-bit resolution yields sufficient SNR for 256-QAM constellations, while the dual channel allows simultaneous capture of downstream and a return-path monitor tap. Its 3.3V operation matches typical cable-modem tuner IC supply rails, simplifying board layout and reducing the total BOM cost.
推荐
Medical Ultrasound Imaging Front-End
In medical ultrasound, the MAX12529ETK+ digitizes the broadband RF return signals after the analog beamformer, with both channels simultaneously capturing in-phase and quadrature components of the demodulated echo. Its 96Msps rate covers transducer frequencies up to ~30MHz, and the 12-bit resolution combined with low-noise T/H inputs preserves the harmonic content required for tissue-harmonic-imaging modes. The exposed-pad TQFN package dissipates heat efficiently in the dense multi-channel arrays used in portable ultrasound carts.
推荐
Radar Pulse Digitizer
The MAX12529ETK+ serves as a matched-filter pulse-compression digitizer in pulsed-radar receiver chains, where dual-channel sampling captures both the radar return and a calibration reference path. Its 96Msps rate and 12-bit resolution provide the time-domain accuracy required for sub-meter range resolution at typical X-band IF frequencies, while the differential inputs reject common-mode noise from the high-power transmit pulses. The 68-pin TQFN's exposed pad bonds to a continuous ground plane, suppressing digital switching noise in radar-dense PCBs.
推荐
Portable Instrumentation and Test Equipment
The MAX12529ETK+ fits handheld oscilloscopes, spectrum analyzers, and arbitrary waveform digitizers where dual 96Msps channels capture repetitive waveforms for equivalent-time analysis. Its low-power 3.3V operation suits battery-powered field instruments, while the 12-bit resolution provides enough dynamic range for production-line pass/fail testing of mixed-signal modules. The exposed-pad TQFN package simplifies thermal management in sealed plastic enclosures where convective cooling is limited.
推荐
MIMO Radio Diversity Receiver
The MAX12529ETK+ suits MIMO radio diversity receivers where two matched ADC channels simultaneously sample the two antenna paths to enable maximal-ratio combining in the digital baseband. Its dual simultaneous sampling at 96Msps delivers aligned samples at both antennas, eliminating the timing skew that would otherwise degrade the diversity gain. The 12-bit resolution supports 64-QAM constellations in Wi-Fi 5/6 and 5G small-cell base stations, and the 3.3V single-supply operation integrates cleanly with the RF front-end and baseband SoC supply rails.
推荐
推荐产品汇总
工程参考数据： MAX12529ETK+ ——对比、设计指导和合规信息。
选型指南
与替代料对比
| 参数 | 本产品 | MAX12528ETK+ | MAX12529ETK+TD | MAX12529ETK+D | MAX12559ETK+ |
|---|---|---|---|---|---|
| Brand | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated |
| Package | 68-pin TQFN (ETK) | 68-pin TQFN (ETK) - same | 68-pin TQFN (ETK) - same | 68-pin TQFN (ETK) - same | 68-pin TQFN (ETK) - same |
| Resolution | 12 bit | 12 bit | 12 bit | 12 bit | 14 bit |
| Sampling Rate | 96 Msps | 80 Msps | 96 Msps | 96 Msps | 80 Msps |
| Number of Channels | 2 (dual) | 2 (dual) | 2 (dual) | 2 (dual) | 2 (dual) |
| Supply Voltage | 3.3 V | 3.3 V | 3.3 V | 3.3 V | 3.3 V |
| Input Type | Differential wideband T/H | Differential wideband T/H | Differential wideband T/H | Differential wideband T/H | Differential wideband T/H |
| Architecture | Pipelined | Pipelined | Pipelined | Pipelined | Pipelined |
| Pinout Compatible | Yes (reference) | Yes | Yes | Yes | Yes (same TQFN-68) |
关键差异点
- Highest sampling rate in MAX1252x dual-12-bit family （对比 MAX12528ETK+)
- Lower resolution but higher sample rate vs MAX12559 （对比 MAX12559ETK+)
- Maxim/Analog Devices integrated reference and clock buffer （对比 Discrete ADC + external reference designs)
设计说明
Separate AVDD and DVDD supplies at the package pins using ferrite beads or pi-filter networks, with 0.1uF ceramic and 10uF tantalum bulk caps placed within 5mm of each supply pin. The MAX12529ETK+'s 3.3V supply is shared with downstream digital logic, but isolating analog and digital rails via ferrite beads prevents high-frequency digital switching noise from coupling into the sensitive T/H front-end, which would otherwise degrade SNR by 3-5 dB at full input frequency.
Bond the exposed thermal pad (EP) directly to a continuous ground plane with at least 8 thermal vias arranged in a 4x4 grid beneath the package. Differential analog input traces (AINA+/AINA-, AINB+/AINB-) should be routed as 100-ohm differential pairs with constant spacing, length-matched within 1mm between channels, and kept clear of digital output buses (DR0-DR11) to minimize crosstalk-induced harmonic spurs in the digitized spectrum.
Do not drive the differential inputs from a single-ended source without an AC-coupling transformer or balun - the MAX12529's fully differential T/H requires matched common-mode voltage at both inputs (typically 1.65V) to avoid saturating the front-end. Failing to set the correct common-mode is the most common cause of degraded THD+N performance in IF sampling applications. Use the COMA/COMB outputs to bias input driver op-amps directly.
合规信息
RoHS and lead-free per Maxim product marking; other compliance status not stated in the verified web data.
