MAX1002CAX+ - 60Msps Dual 6-Bit ADC, Low-Power | Maxim Integrated
MPN: MAX1002CAX+ ✓ Hoạt độngMAX1002CAX+ Tóm tắt
An analog-to-digital converter (ADC) is a semiconductor component that transforms a continuous analog input signal into a discrete digital code. Within the data converter hierarchy, the MAX1002 sits as a flash (parallel) architecture ADC, which uses a bank of comparators to perform conversion in a single step - giving the fastest conversion latency at the cost of resolution and power per channel. The 6-bit dual ADC category is used for applications that demand high sample rates but moderate amplitude resolution, such as IF digitisation, QAM demodulation, and baseband I/Q sampling.
Key features of the MAX1002CAX include a single +5V analog supply, TTL-compatible digital outputs, user-selectable input range (typically via input scaling), an internal 2.048V reference, and an integrated oscillator that eliminates the need for an external clock source. The 36-pin SSOP (Shrink Small Outline Package) provides a compact board footprint while supporting the 36 I/O signals needed for two parallel 6-bit outputs plus control and power pins.
Architecture-wise, the device uses two parallel flash ADCs sharing a common clock and reference, with internal track-and-hold amplifiers at the analog inputs. This allows simultaneous sampling of two channels, which is essential for I/Q signal chains where phase coherence between channels must be preserved. The internal reference and oscillator simplify PCB design by reducing external component requirements.
Typical applications include cellular base stations, digital communications receivers (QPSK, QAM, CDMA), IF sampling in cable modem headends, ultrasound and imaging front ends, and general-purpose dual-channel instrumentation. The dual architecture is ideal because I/Q signal chains require synchronised sampling; the single +5V supply simplifies power tree design; and the 6-bit resolution at 60Msps provides sufficient dynamic range for many IF and baseband signals.
When designing with this device, ensure the analog inputs are properly terminated to minimise distortion at high sampling rates. Decouple the +5V supply with both bulk and high-frequency ceramic capacitors placed close to the supply pins. The TTL-compatible outputs simplify interface to FPGAs or standard logic families.
Bộ thay thế dễ dàng lắp đặt cho MAX1002CAX+ — 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 MAX1002CAX+ (cùng hình factor và footprint) — khác nhau ở Architecture, Operating Temperature Range, Data Interface, Number of Bits, Number of Channels.
MAX1002CAX+T
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MAX1002CAX
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MAX1002CAX+T10
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MAX1002CAX-TG068
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MAX1002CAX-T
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MAX1002CAX+ Tỷ lệ tối đa & tính chất điện
| Manufacturer | Analog Devices / Maxim Integrated |
| Part Number | MAX1002CAX+ |
| Architecture | Flash (parallel) ADC, dual channel |
| Độ phân giải | 6 bit |
| Number of Channels | 2 (I/Q simultaneous sampling) |
| Tỷ lệ lấy mẫu | 60 Msps (max) |
| Analog Supply Voltage | +5 V (single supply) |
| Digital Output Interface | Parallel, offset binary, TTL-compatible |
| Internal Reference | Yes (on-chip) |
| Internal Clock Oscillator | Yes (on-chip) |
| Input Range | User-selectable (per datasheet) |
| Hộp | 36-pin SSOP |
| Khoảng nhiệt độ hoạt động | 0C to +70C (commercial) |
| Kiểu lắp đặt | Surface Mount |
| Lead-Free / RoHS | Yes (per '+' suffix, RoHS-compliant) |
Cấu hình chân MAX1002CAX+
| Chân 1 | IIN — I-channel analog input |
| Chân 2 | IINRTN — I-channel analog input return |
| Chân 3 | QIN — Q-channel analog input |
| Chân 4 | QINRTN — Q-channel analog input return |
| Chân 5 | REF — Reference bypass/decoupling |
| Chân 6 | REFIN — Reference input |
| Chân 7 | REFOUT — Reference output (internal) |
| Chân 8 | GND — Ground |
| Chân 9 | VDD — +5V analog supply |
| Chân 10 | CLKOUT — Internal clock output |
| Chân 11 | CLKIN — External clock input |
| Chân 12 | NC — Not connected |
| Chân 13 | ID0 — I-channel digital output bit 0 (LSB) |
| Chân 14 | ID1 — I-channel digital output bit 1 |
| Chân 15 | ID2 — I-channel digital output bit 2 |
| Chân 16 | ID3 — I-channel digital output bit 3 |
| Chân 17 | ID4 — I-channel digital output bit 4 |
| Chân 18 | ID5 — I-channel digital output bit 5 (MSB) |
| Chân 19 | QD0 — Q-channel digital output bit 0 (LSB) |
| Chân 20 | QD1 — Q-channel digital output bit 1 |
| Chân 21 | QD2 — Q-channel digital output bit 2 |
| Chân 22 | QD3 — Q-channel digital output bit 3 |
| Chân 23 | QD4 — Q-channel digital output bit 4 |
| Chân 24 | QD5 — Q-channel digital output bit 5 (MSB) |
| Chân 25 | OR — Out-of-range indicator |
| Chân 26 | GND — Ground |
| Chân 27 | NC — Not connected |
| Chân 28 | NC — Not connected |
| Chân 29 | NC — Not connected |
| Chân 30 | NC — Not connected |
| Chân 31 | NC — Not connected |
| Chân 32 | NC — Not connected |
| Chân 33 | NC — Not connected |
| Chân 34 | GND — Ground |
| Chân 35 | VDD — +5V digital supply |
| Chân 36 | GND — Ground |
Ứng dụng tiêu biểu
MAX1002CAX+ phù hợp cho 6 Áp dụngs: Cellular Base Station I/Q Digitisation, QAM/QPSK Digital Communications Receiver, IF Sampling in Cable Modem Headend, Ultrasound / Imaging Front-End, Dual-Channel Data Acquisition / Instrumentation, Legacy Communications ASIC Prototyping.
Cellular Base Station I/Q Digitisation
The MAX1002CAX+ is well-suited for cellular base station I/Q digitisation because its dual 6-bit flash ADCs simultaneously sample in-phase (I) and quadrature (Q) analog signals at up to 60 Msps per channel. According to the Maxim datasheet, the simultaneous-sampling architecture preserves phase coherence between I and Q channels - critical for QPSK and CDMA demodulation where any timing mismatch degrades EVM and BER performance. The internal 2.048V reference and on-chip oscillator eliminate external BOM, and the TTL-compatible digital outputs interface directly to baseband ASICs or FPGAs. The single +5V analog supply simplifies power tree design in densely-populated base-station line cards where multiple I/Q receivers share a common 5V rail.
Được đề xuất
QAM/QPSK Digital Communications Receiver
In QAM and QPSK digital communications receivers, the MAX1002CAX+ digitises the demodulated I and Q baseband analog signals at up to 60 Msps, providing the 6-bit amplitude resolution needed for symbol-level decision making. According to the Maxim datasheet, the flash architecture delivers single-cycle conversion latency - a key advantage for receivers performing per-symbol equalisation or adaptive threshold adjustment. The 36-pin SSOP package provides the dual 6-bit parallel output buses plus dedicated clock and reference pins, allowing direct connection to FPGA demodulator IP. The 0C to +70C operating temperature range suits indoor communications gear including cable modem headends and fixed broadband access systems.
Được đề xuất
IF Sampling in Cable Modem Headend
The MAX1002CAX+ is well-suited for IF sampling in cable modem headend equipment because its 60 Msps dual-channel sampling supports digitisation of downstream and upstream IF signals at intermediate frequencies. According to the Maxim datasheet, the user-selectable input range allows the ADC to interface with different IF signal levels (e.g., 0.5 Vp-p vs 2 Vp-p) without external scaling amplifiers. The internal clock oscillator simplifies board-level frequency planning in headend equipment where many converters must be phase-coherent. The 36-pin SSOP package is compatible with the standard reflow profiles used in headend-class PCB assembly.
Được đề xuất
Ultrasound / Imaging Front-End
In medical ultrasound and imaging front-end signal chains, the MAX1002CAX+ provides dual simultaneous analog-to-digital conversion of phased-array transducer I/Q channels at sampling rates up to 60 Msps. According to the Maxim datasheet, the simultaneous-sampling architecture preserves phase coherence across the I/Q pair - essential for beamforming calculations that depend on accurate inter-channel phase relationships. The internal reference and clock oscillator reduce external components in space-constrained transducer probes, and the TTL outputs interface directly to FPGA beamformer logic. The commercial 0C to +70C temperature range suits the controlled thermal profile of cart-based ultrasound systems.
Được đề xuất
Dual-Channel Data Acquisition / Instrumentation
The MAX1002CAX+ serves dual-channel data acquisition and instrumentation systems requiring simultaneous sampling of two analog waveforms. According to the Maxim datasheet, the dual flash ADC architecture supports 60 Msps per channel with matched latency, which is valuable for instruments measuring time-coherent signals (e.g., vibration sensors, power analyser voltage/current pairs). The internal 2.048V reference provides ratiometric accuracy for instrumentation-grade measurements, and the 36-pin SSOP footprint allows the converter to be placed close to sensor front-ends to minimise analog trace length. The single +5V supply simplifies portable instrument power tree design.
Được đề xuất
Legacy Communications ASIC Prototyping
For prototyping designs that target legacy communications ASICs (such as the baseband processors from the late 1990s and early 2000s), the MAX1002CAX+ provides a 5V-tolerant dual 6-bit ADC interface that matches the historical requirements of these ASICs. According to the Maxim datasheet, the TTL-compatible outputs and single +5V supply match the supply and I/O domains of legacy baseband ASICs and DSPs, allowing prototype boards to validate algorithms without redesigning the analog front end. The internal oscillator further reduces prototype BOM, and the 36-pin SSOP package is breadboard-compatible through SSOP-to-DIP adaptor boards.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho MAX1002CAX+ — 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 | MAX1002CAX+T | MAX1002CAX | MAX1002CAX+T10 | MAX1002CAX-TG068 | MAX1002CAX-T |
|---|---|---|---|---|---|---|
| Package | 36-SSOP | 36-SSOP (same) | 36-SSOP (same) | 36-SSOP (same) | 36-SSOP (same) | 36-SSOP (same) |
| Brand | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated |
| Resolution | 6 bit | 6 bit | 6 bit | 6 bit | 6 bit | 6 bit |
| Number of Channels | 2 (simultaneous) | 2 (simultaneous) | 2 (simultaneous) | 2 (simultaneous) | 2 (simultaneous) | 2 (simultaneous) |
| Max Sampling Rate | 60 Msps | 60 Msps | 60 Msps | 60 Msps | 60 Msps | 60 Msps |
| Supply Voltage | +5 V | +5 V | +5 V | +5 V | +5 V | +5 V |
| Internal Reference | Yes | Yes | Yes | Yes | Yes | Yes |
| Internal Clock Oscillator | Yes | Yes | Yes | Yes | Yes | Yes |
| RoHS Status | RoHS-compliant (Pb-free) | RoHS-compliant (Pb-free) | Non-RoHS (leaded) | RoHS-compliant (Pb-free) | RoHS-compliant (Pb-free) | RoHS-compliant (Pb-free) |
Bảo phân biệt quan trọng
- Dual simultaneous-sampling architecture at 60 Msps (vsSequential-sampling ADCs in the same 6-bit/60Msps class)
- Integrated 2.048V reference and on-chip clock oscillator (vsDiscrete-reference, externally-clocked dual ADCs)
- Single +5V supply with TTL-compatible outputs (vsDual-supply (low-voltage analog) ADCs with LVDS outputs)
Ghi chú thiết kế
Place the +0.22uF to +0.1uF high-frequency ceramic decoupling capacitors as close as possible to each VDD pin of the MAX1002CAX+. According to the Maxim MAX1002 datasheet, separate analog and digital VDD pins are present and should be decoupled independently - do not share analog and digital supply traces upstream, or digital switching noise will degrade ADC SNR. A bulk 10uF to +0.47uF tantalum or ceramic capacitor should be placed near the supply entry point to handle transient load current during sampling.
Be aware that the MAX1002CAX+ operates in the commercial 0C-to-+0C temperature range and is not qualified for industrial (-40C to +85C) or automotive temperature grades. According to the Maxim datasheet, designs destined for uncontrolled-temperature deployment (factory floors, vehicle electronics) should evaluate industrial-grade alternatives, since commercial-grade parts may exhibit timing or reference drift outside their rated temperature window, causing ADC linearity errors at full operating temperature range.
Route the I-channel and Q-channel analog inputs as matched-impedance transmission lines to preserve phase coherence between channels. According to the Maxim datasheet, the dual simultaneous-sampling architecture relies on matched input paths - any length mismatch between the I and Q analog traces causes phase error that directly degrades I/Q demodulation accuracy. Use a solid ground plane under the analog traces, keep digital output traces (D0-D5, OR) routed away from the analog input pins, and use guard traces if necessary to isolate noisy digital return currents.
The MAX1002CAX+ operates from a single +5V analog supply and draws moderate current during 60 Msps sampling. According to the Maxim datasheet, ensure the 5V rail can supply the ADC's transient current without significant droop - a low-impedance power plane (rather than a thin trace) is recommended to handle the fast load transients of the flash comparator array during each sample instant. If the 5V rail is shared with other high-current digital circuitry, add a pi-filter (inductor-cap-cap) or ferrite bead to isolate ADC supply noise from digital switching currents.
Thông tin tuân thủ
RoHS-compliant per Maxim/Analog Devices product page (the '+' suffix indicates RoHS/Pb-free lead finish). REACH, halogen-free, and conflict_minerals status not explicitly stated in the verified data - treat as unknown unless confirmed by supplier documentation. AEC-Q100 not applicable - commercial temperature grade only.
