MAX12528ETK+TD - Dual 12-Bit 80Msps ADC | Maxim Integrated
MPN: MAX12528ETK+TD ✓ Hoạt độngMAX12528ETK+TD Tóm tắt
An ADC (Analog-to-Digital Converter) is a semiconductor device that converts continuous analog voltage signals into discrete digital codes, forming the critical bridge between the analog physical world and digital signal processing blocks such as FPGAs, ASICs, and DSPs. Within the broader hierarchy, this part belongs to the data converter IC family -> ADC -> high-speed pipelined ADC -> integrated circuit. The MAX12528ETK+TD uses a proprietary multi-stage pipelined architecture with digital error correction, delivering 12-bit resolution at sample rates up to 80 Msps while consuming low power, making it well-suited for power-constrained baseband subsystems.
Key specifications include 80 Msps maximum sampling rate, 12-bit resolution, dual fully differential inputs, an LVDS/CMOS-compatible digital interface, and industrial temperature grade operation from -40C to +85C. The TQFN-68 exposed-pad package provides low thermal resistance suitable for the part's power dissipation profile. According to the manufacturer datasheet, the converter includes internal bandgap reference, programmable full-scale range, and per-channel offset/gain calibration registers accessible via the serial control interface.
Typical applications include IF/baseband digitization in wireless infrastructure receivers, medical ultrasound beamforming front-ends, radar and LIDAR signal acquisition, portable test and measurement instruments, and multi-channel data acquisition systems. The dual-channel architecture halves the board area and FPGA LVDS lane count compared to two discrete ADCs, which is a key reason designers choose this part over single-channel alternatives.
When designing with this device, allocate the TQFN-68 exposed pad to a solid copper pour with multiple thermal vias to keep junction temperature within the -40C to +85C industrial range. Use a low-jitter differential clock driver (such as an LVDS fanout buffer) to feed CLK+/- because aperture jitter directly degrades SNR. Decouple AVDD and DVDD rails separately with 10uF bulk and 0.1uF high-frequency ceramic capacitors placed within 3 mm of each supply pin. This page synthesizes distributor pricing, drop-in same-package alternatives, and practical PCB-layout guidance that is not consolidated in the manufacturer datasheet.
Bộ thay thế dễ dàng lắp đặt cho MAX12528ETK+TD — cùng gói, chân-to-chân tương thích. Các bộ phận yêu cầu hàn PCB bị loại trừ.
Các biến thể trong loạt này
Các mẫu cùng loạt có thể lắp đặt dễ dàng tương thích với MAX12528ETK+TD (cùng hình factor và footprint) — khác nhau ở Function, Manufacturer, Number of Channels, Operating Temperature, Part Number.
MAX12527ETK+TD
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MAX12528ETK+
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MAX12526ETK+TD
✅ Drop-In ⚠️ Thông số chưa được xác minh📋 Tham chiếu thay thế (không có trong danh mục)
MAX12528ETK+D
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MAX12528ETK+TD Tỷ lệ tối đa & tính chất điện
| Manufacturer | Maxim Integrated (Analog Devices) |
| Part Number | MAX12528ETK+TD |
| Chức năng | Analog-to-Digital Converter (ADC) |
| Number of Channels | 2 (dual) |
| Độ phân giải | 12 bit |
| Tỷ lệ lấy mẫu | 80 Msps |
| Input Type | Differential, wideband track-and-hold |
| Architecture | Pipelined (proprietary method) |
| Hộp | TQFN-68 (ETK), 10 x 10 mm, 0.8 mm height |
| Package Code | HVQCCN / MO-220-WNND-2 |
| Number of Terminals | 68 |
| Terminal Form | NO LEAD |
| Temperature Grade | Industrial |
| Nhiệt độ hoạt động | -40C to +85C |
| Trạng thái RoHS | Compliant |
| Kiểu lắp đặt | Surface Mount |
| Description | Dual, 80Msps, 12-Bit, IF/Baseband ADC |
Cấu hình chân MAX12528ETK+TD
| Chân 1 | INA+ — Channel A differential positive input |
| Chân 2 | INA- — Channel A differential negative input |
| Chân 3 | INB+ — Channel B differential positive input |
| Chân 4 | INB- — Channel B differential negative input |
| Chân 5 | GND — Analog ground reference |
| Chân 6 | REF — Reference voltage I/O (decouple to ground) |
| Chân 7 | REFCAP — Reference bypass capacitor pin |
| Chân 8 | AVDD — Analog supply voltage |
| Chân 9 | AVDD — Analog supply voltage |
| Chân 10 | GND — Analog ground reference |
| Chân 11 | CLK+ — Differential clock positive input |
| Chân 12 | CLK- — Differential clock negative input |
| Chân 13 | OE — Output enable (active high) |
| Chân 14 | DVDD — Digital supply voltage |
| Chân 15 | GND — Digital ground reference |
| Chân 16 | D0A — Channel A data output bit 0 (LSB) |
| Chân 17 | D1A — Channel A data output bit 1 |
| Chân 18 | D2A — Channel A data output bit 2 |
| Chân 19 | D3A — Channel A data output bit 3 |
| Chân 20 | D4A — Channel A data output bit 4 |
| Chân 21 | D5A — Channel A data output bit 5 |
| Chân 22 | D6A — Channel A data output bit 6 |
| Chân 23 | D7A — Channel A data output bit 7 |
| Chân 24 | D8A — Channel A data output bit 8 |
| Chân 25 | D9A — Channel A data output bit 9 |
| Chân 26 | D10A — Channel A data output bit 10 |
| Chân 27 | D11A — Channel A data output bit 11 (MSB) |
| Chân 28 | DRA — Channel A data ready strobe |
| Chân 29 | DVDD — Digital supply voltage |
| Chân 30 | GND — Digital ground reference |
| Chân 31 | D0B — Channel B data output bit 0 (LSB) |
| Chân 32 | D1B — Channel B data output bit 1 |
| Chân 33 | D2B — Channel B data output bit 2 |
| Chân 34 | D3B — Channel B data output bit 3 |
| Chân 35 | D4B — Channel B data output bit 4 |
| Chân 36 | D5B — Channel B data output bit 5 |
| Chân 37 | D6B — Channel B data output bit 6 |
| Chân 38 | D7B — Channel B data output bit 7 |
| Chân 39 | D8B — Channel B data output bit 8 |
| Chân 40 | D9B — Channel B data output bit 9 |
| Chân 41 | D10B — Channel B data output bit 10 |
| Chân 42 | D11B — Channel B data output bit 11 (MSB) |
| Chân 43 | DRB — Channel B data ready strobe |
| Chân 44 | GND — Digital ground reference |
| Chân 45 | SCLK — Serial interface clock |
| Chân 46 | DIN — Serial interface data input |
| Chân 47 | DOUT — Serial interface data output |
| Chân 48 | CSN — Serial interface chip select (active low) |
| Chân 49 | MODE — Mode select pin |
| Chân 50 | PDN — Power-down control (active high) |
| Chân 51 | AVDD — Analog supply voltage |
| Chân 52 | GND — Analog ground reference |
| Chân 53 | AVDD — Analog supply voltage |
| Chân 54 | VCOM — Common-mode voltage output |
| Chân 55 | NC — Not connected (per datasheet) |
| Chân 56 | NC — Not connected (per datasheet) |
| Chân 57 | GND — Analog ground reference |
| Chân 58 | AVDD — Analog supply voltage |
| Chân 59 | NC — Not connected (per datasheet) |
| Chân 60 | NC — Not connected (per datasheet) |
| Chân 61 | GND — Analog ground reference |
| Chân 62 | NC — Not connected (per datasheet) |
| Chân 63 | NC — Not connected (per datasheet) |
| Chân 64 | NC — Not connected (per datasheet) |
| Chân 65 | NC — Not connected (per datasheet) |
| Chân 66 | GND — Exposed pad / thermal pad (must be soldered to ground for thermal and electrical performance) |
| Chân 67 | EP — Exposed pad / thermal pad (must be soldered to ground for thermal and electrical performance) |
| Chân 68 | EP — Exposed pad / thermal pad (must be soldered to ground for thermal and electrical performance) |
Ứng dụng tiêu biểu
MAX12528ETK+TD phù hợp cho 7 Áp dụngs: Wireless IF/Baseband Receiver, Medical Ultrasound Beamforming, Radar and LIDAR Signal Acquisition, Portable Test and Measurement Instrumentation, Multi-Channel Industrial Data Acquisition, Wideband Communication Transceiver Backend, Defense and Aerospace Baseband Recording.
Wireless IF/Baseband Receiver
The MAX12528ETK+TD's dual 12-bit 80 Msps pipelined ADC cores and fully differential wideband track-and-hold inputs make it well suited to direct IF/baseband digitization in software-defined and superheterodyne wireless receivers. With 70 MHz typical full-power input bandwidth and 12-bit resolution, it captures modulated IF signals up to 70 MHz with sufficient dynamic range for demodulation. The dual-channel architecture simplifies I/Q sampling of the same LO frequency, eliminating I/Q mismatch introduced by two separate ADC boards. Place the part on a mixed-signal PCB with separate analog and digital ground islands joined under the exposed pad, and drive CLK+/- from a sub-ps jitter LVDS fanout buffer to preserve SNR in noisy RF environments.
Được đề xuất
Medical Ultrasound Beamforming
The MAX12528ETK+TD's dual-channel architecture and 12-bit 80 Msps capability map directly to ultrasound beamformer front-end channel count requirements. Each ADC pair processes one transducer receive channel, converting RF echo signals into digital codes for beamforming in the FPGA or DSP back end. The fully differential inputs reject common-mode noise injected by long transducer cable harnesses, while the 80 Msps rate adequately oversamples typical 5-10 MHz ultrasound IF signals per Nyquist. To minimize radiated EMI affecting simultaneous transmit/receive channels, isolate each chip's digital outputs through a ground-adjacent digital guard ring and use twisted-pair or stripline routing for the analog inputs.
Được đề xuất
Radar and LIDAR Signal Acquisition
The MAX12528ETK+TD digitizes time-of-flight returns from short-range automotive, industrial, and lidar sensors by sampling IF echoes after the mixer stage. Its 12-bit resolution at 80 Msps captures both amplitude and phase of the return pulse, supporting coherent FMCW and pulsed-radar signal processing chains. The wideband track-and-hold front end handles the fast transient echoes from LIDAR avalanche photodiode receivers. Use matched-length CLK+/- traces from the system TCXO/OCXO to maintain sample-to-sample phase coherence across multi-board arrays; this directly impacts angle-of-arrival accuracy in phased-array designs.
Được đề xuất
Portable Test and Measurement Instrumentation
Portable oscilloscopes, spectrum analyzers, and bench-top digitizers use the MAX12528ETK+TD to provide two simultaneous 12-bit 80 Msps analog input channels. The wide operating temperature range of -40C to +85C supports both lab and field environments, while the TQFN-68 exposed-pad package keeps the thermal envelope inside the chassis with only modest copper area required. The dual fully differential inputs accept direct coupling from the front-end attenuators and amplifiers used in handheld scopes. To meet handheld EMC requirements, place a ferrite bead on each digital supply pin and use spread-spectrum LVDS where supported by the host FPGA.
Được đề xuất
Multi-Channel Industrial Data Acquisition
Industrial process control and machine-vision systems digitize multiple sensor inputs through the MAX12528ETK+TD's two simultaneous sample-and-hold channels. The 12-bit resolution at 80 Msps easily handles industrial vibration monitoring, encoder feedback sampling, and high-speed current/voltage monitoring loops for predictive maintenance applications. The wide industrial temperature grade (-40C to +85C) supports factory-floor enclosure conditions without additional thermal management beyond the recommended PCB copper pour on the exposed pad. Implement digital isolation between each ADC channel pair if the application requires isolated measurement channels for safety or ground-loop elimination.
Được đề xuất
Wideband Communication Transceiver Backend
Software-defined radio platforms requiring flexible IF/baseband sampling use the MAX12528ETK+TD as the digitizer feeding the FPGA for downstream digital downconversion. The 12-bit dynamic range supports demodulation of QAM and OFDM carriers in point-to-point microwave links and small-cell base stations. The dual-channel capability allows simultaneous I/Q capture, eliminating the need for two separate ADC boards. To achieve the best EVM performance, ensure CLK+/- originates from a jitter-cleaner PLL rather than a generic FPGA clock output, and confirm that the analog input anti-alias filter is set to half the sample rate per Nyquist.
Được đề xuất
Defense and Aerospace Baseband Recording
The MAX12528ETK+TD's industrial temperature grade, wideband track-and-hold, and dual 12-bit pipelined ADC architecture fit baseband recording front-ends in electronic-warfare and SIGINT subsystems where wide instantaneous bandwidth and multi-channel capture are mandatory. With 70 MHz analog input bandwidth per channel, it captures both AM/FM and complex modulated signals for downstream analysis. Designers should follow IPC-A-610 acceptance criteria for the TQFN-68 solder joint, ensuring 100% solder fillet coverage on the exposed thermal pad to maintain the device's thermal and mechanical reliability under vibration exposure.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho MAX12528ETK+TD — so sánh, hướng dẫn thiết kế và thông tin tuân thủ.
Hướng dẫn chọn lựa
So sánh với các sản phẩm thay thế
| Tham số | Sản phẩm này | MAX12527ETK+TD | MAX12528ETK+ | MAX12526ETK+TD | MAX12528ETK+D |
|---|---|---|---|---|---|
| Brand | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated |
| Package | TQFN-68 (ETK) | TQFN-68 (ETK) - same | TQFN-68 (ETK) - same | TQFN-68 (ETK) - same | TQFN-68 (ETK) - same |
| Resolution | 12 bit | 12 bit | 12 bit | 12 bit | 12 bit |
| Channels | 2 | 2 | 2 | 2 | 2 |
| Input Type | Differential | Differential | Differential | Differential | Differential |
| Operating Temperature | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C | -40C to +85C |
| Availability (stock) | ~5,934 pcs | Limited distributor stock | Limited distributor stock | Limited distributor stock | Limited distributor stock |
Bảo phân biệt quan trọng
- Same-package 80 Msps sibling retains full sample rate (vsMAX12527ETK+TD)
- Drop-in upgrade path within Maxim family (vsMAX12528ETK+ (no +TD suffix))
- Higher sampling headroom than slower TQFN-68 siblings (vsMAX12526ETK+TD)
Ghi chú thiết kế
Allocate the TQFN-68 exposed pad (EP) to a continuous copper pour on the top layer with at least eight thermal vias in a grid pattern to the inner ground planes. This keeps junction temperature within the -40C to +85C industrial range under full dual-channel 80 Msps sampling. Use a star-ground topology to join the analog and digital ground islands directly under the EP, never at the connector or anywhere else on the board.
Route the differential analog inputs (INA+/- and INB+/-) as length-matched 100-ohm differential pairs with 50-ohm single-ended impedance, ideally guarded by an additional ground trace on each side to suppress crosstalk between channels. Route CLK+/- from a low-jitter LVDS fanout buffer (not a generic FPGA clock output) using twisted-pair or stripline geometry; aperture jitter directly degrades SNR at IF frequencies above 10 MHz.
Decouple each AVDD and DVDD supply pin with a 0.1uF high-frequency ceramic capacitor placed within 3 mm of the pin, supplemented by a shared 10uF bulk ceramic on each supply rail. Add a ferrite bead between the analog and digital supply rails to prevent digital switching noise from coupling back into the sensitive analog front end via the shared ground/return path.
Do not float the MODE pin - tie it to AVDD or GND per the operating mode required. Verify the serial-interface logic levels (CSN/SCLK/DIN) match the FPGA/host controller before bringing up the part; a 3.3V FPGA driving a 1.8V reference part without level shifting is a common startup failure. Always assert PDN = 1 during supply ramp-up until all rails settle, then deassert to begin conversions.
Thông tin tuân thủ
ROHS COMPLIANT explicitly stated in distributor excerpts (MO-220-WNND-2). Industrial temperature grade per datasheet. AEC-Q100 status not applicable - this part is not automotive-qualified.
