MAX153EAP+ - 1Msps 8-Bit ADC | Maxim Integrated | SSOP-20
MPN： MAX153EAP+ ✓ 啟用中MAX153EAP+ 概覽
An ADC (analog-to-digital converter) is a data-conversion integrated circuit that samples a continuous analog voltage and quantizes it into a discrete digital code. The half-flash architecture used in the MAX153 family combines two flash sections to deliver high throughput at moderate cost compared with full-flash devices. Within the broader taxonomy, the MAX153 sits between successive-approximation and full-flash ADCs as a speed-optimized converter for embedded data-acquisition and instrumentation systems.
Key features include 1 Msps sampling, 660 ns conversion time, parallel microprocessor-compatible interface, and a dedicated POWERDN pin that reduces supply current to 1 µA between conversions. The 8-bit resolution provides 1 LSB of approximately 19.5 mV over a 0-5 V unipolar input range. Input range selection between unipolar and bipolar modes, plus an external reference input, make the device flexible for single-ended or differential signal acquisition. Operating temperature range is -40 °C to +85 °C for the E-suffix industrial grade.
The MAX153 integrates an input track-and-hold, two 4-bit flash ADCs with 1-bit overlap, an error-correction latch, and a state-machine control logic, accessed through a parallel data bus with standard CS and RD strobe inputs. The half-flash topology halves the comparator count versus a full 8-bit flash, reducing die area and input capacitance while still supporting 1 Msps throughput.
Typical applications include digital signal processing front-ends, high-speed data acquisition cards, PC plug-in boards, portable instrumentation, and process-control monitoring where a parallel-output ADC simplifies interface to microprocessors and DSPs. The 1 µA power-down mode also suits battery-powered measurement equipment.
When designing with the MAX153EAP+, place 0.1 µF bypass capacitors adjacent to the supply pins and observe the analog/digital ground split recommended in the manufacturer datasheet to preserve dynamic performance at full throughput.
直接替換替代品，適用於 MAX153EAP+ — 相同封裝，腳位對腳位相容。需重新設計 PCB 的不同封裝零件不列入。
此系列的變體
與下列產品可直接替換的同系列型號： MAX153EAP+ （相同外形與佔位） — 差異在於 Architecture, Data Interface, Package, Mounting Type, Resolution.
MAX153EAP+T
✅ 直接替換聯絡詢價
查看資料表 →MAX153CAP+
✅ 直接替換📋 參考替代品（不在目錄中）
MAX152EWP
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →MAX150AEWP+T
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →MAX147AEAP
✅ 直接替換 ⚠️ 規格未經驗證聯絡詢價
查看資料表 →MAX153EAP+ 最大額定值與電氣特性
| 解析度 | 8 bit |
| 取樣率 | 1 Msps |
| Conversion Time | 660 ns |
| Number of Input Channels | 1 |
| Architecture | Half-Flash (2-step flash) |
| Input Type | Single-Ended (unipolar or bipolar) |
| Supply Voltage (Single) | +5 V |
| Supply Voltage (Dual) | +5 V / -5 V |
| Power-Down Current | 1 µA |
| Data Interface | Parallel, uP-compatible |
| Reference Type | External |
| 工作溫度 | -40 C to +85 C |
| 封裝 | 20-pin SSOP |
| 安裝類型 | Surface Mount |
| RoHS 狀態 | Compliant |
MAX153EAP+ 腳位配置
| 腳位 1 | VREF — External reference voltage input |
| 腳位 2 | AIN — Analog input |
| 腳位 3 | AGND — Analog ground |
| 腳位 4 | VSS — Negative supply (-5V or GND for single supply) |
| 腳位 5 | VDD — Positive supply (+5V) |
| 腳位 6 | DGND — Digital ground |
| 腳位 7 | MODE — Input range mode select (unipolar/bipolar) |
| 腳位 8 | CLK — Conversion clock input |
| 腳位 9 | POWERDN — Power-down control (active high for shutdown) |
| 腳位 10 | INT — Interrupt output (end-of-conversion) |
| 腳位 11 | RD — Read strobe (active low) |
| 腳位 12 | CS — Chip select (active low) |
| 腳位 13 | WR — Write/convert start (active low) |
| 腳位 14 | D7 — Data bit 7 (MSB) |
| 腳位 15 | D6 — Data bit 6 |
| 腳位 16 | D5 — Data bit 5 |
| 腳位 17 | D4 — Data bit 4 |
| 腳位 18 | D3 — Data bit 3 |
| 腳位 19 | D2 — Data bit 2 |
| 腳位 20 | D1 — Data bit 1 (LSB with D0 implied on shared bus) |
典型應用
MAX153EAP+ 適用於 6 應用s: High-Speed Data Acquisition Systems, Digital Signal Processing Front-Ends, PC Plug-In Data Acquisition Cards, Portable Battery-Powered Instrumentation, Process Control and Industrial Monitoring, Embedded Microprocessor Data Converters.
High-Speed Data Acquisition Systems
The MAX153EAP+'s 1 Msps throughput and half-flash architecture suit it to multi-channel data-acquisition boards digitizing sensor waveforms in real time. According to the manufacturer datasheet, the parallel interface ports directly to microprocessors and DSPs without glue logic, simplifying FPGA-hostile ADC subsystems. The 8-bit resolution and external reference allow scaling for transducer signal ranges (4.096 V LSB = 16 mV) while keeping acquisition latency at ~660 ns per sample.
推薦
Digital Signal Processing Front-Ends
In DSP front-ends feeding microprocessors, the MAX153EAP+ delivers 1 Msps throughput with an 8-bit code width suitable for FFT input stages and per-sample settling times under 660 ns. The dedicated POWERDN pin allows the upstream DSP to duty-cycle the converter, reducing average current to ~1 µA between bursts. Bipolar input capability accommodates audio-bandwidth signals centered on 0 V, and the parallel data bus simplifies DMA hand-off into on-chip RAM.
推薦
PC Plug-In Data Acquisition Cards
The MAX153EAP+ integrates well into PC plug-in DAQ cards where ISA/PCI bus controllers accept parallel data with minimal latency. The half-flash conversion at 1 Msps supports 1 MHz bandwidth on a single input channel, adequate for vibration analysis, ultrasonic front-ends, and laboratory instrumentation. The single +5 V supply matches typical PC card slot rails, and the SSOP-20 footprint reduces board height for half-height card form factors.
推薦
Portable Battery-Powered Instrumentation
Portable DMMs and field instruments benefit from the MAX153EAP+'s 1 µA power-down current, which allows duty-cycling the ADC between user-triggered measurements. The single +5 V supply (or dual ±5 V with low current) suits two-cell Li-ion and USB-powered measurement tools. The SSOP-20 surface-mount package has a small footprint for handheld enclosures, and the wide -40 °C to +85 °C industrial range supports outdoor field deployments across climates.
推薦
Process Control and Industrial Monitoring
Industrial process controllers use the MAX153EAP+ for fast feedback loops in motor-drive current sense, valve position readback, and high-speed temperature scanning. The 660 ns conversion time allows control rates exceeding 1 kHz per channel, and the bipolar input capability reads signals from ±5 V transducers directly. The industrial -40 °C to +85 °C temperature grade plus converter noise rejection make the device a fit for factory-floor PLC front-ends.
推薦
Embedded Microprocessor Data Converters
Embedded applications using 8051, ARM7, or 68HC11 microcontrollers take advantage of the MAX153EAP+'s CS and RD strobes designed for direct connection to uP buses. The 8-bit data width matches the natural bus size of 8-bit controllers, eliminating byte-stitching logic. Combined with the half-flash speed and 1 µA power-down, the converter interfaces cleanly to interrupt-driven sampling routines without DMA overhead, ideal for embedded control firmware.
推薦
推薦產品摘要
工程參考資料，適用於 MAX153EAP+ — 比較、設計指引及合規資訊。
選型指南
與替代品比較
| 參數 | 本產品 | MAX153EAP+T | MAX153CAP+ | MAX152EWP | MAX150AEWP+T | MAX147AEAP |
|---|---|---|---|---|---|---|
| Brand | Analog Devices (Maxim Integrated) | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Package | 20-SSOP | 20-SSOP - same | 20-SSOP - same | 20-SOIC (pin-compatible SSOP variant family) | 20-SOIC | 20-SSOP - same |
| Resolution | 8 bit | 8 bit | 8 bit | 8 bit | 8 bit | 12 bit |
| Sampling Rate | 1 Msps | 1 Msps | 1 Msps | ~400 ksps | ~250 ksps | 100 ksps |
| Conversion Architecture | Half-Flash | Half-Flash | Half-Flash | SAR | SAR | SAR |
| Supply Voltage | +5 V or +/-5 V | +5 V or +/-5 V | +5 V or +/-5 V | +5 V | +5 V | +5 V |
| Operating Temperature | -40 C to +85 C | -40 C to +85 C | 0 C to +70 C | -40 C to +85 C | -40 C to +85 C | -40 C to +85 C |
| 1ku Pricing (USD) | $8.90 - $14.17 | Similar pricing | Similar pricing | Lower (lower throughput) | Lower | Higher (12-bit upgrade) |
主要差異化特點
- Lowest-cost SSOP-20 drop-in upgrade path for the same family (對比MAX153EAP+T)
- Industrial temperature range for factory-grade deployments (對比MAX153CAP+)
- Higher throughput than the SAR same-package alternatives (對比MAX152EWP)
設計說明
Place 0.1 µF ceramic bypass capacitors adjacent to VDD and VSS pins and keep analog (AGND) and digital (DGND) ground return paths separated until they meet at the power supply star point, as recommended in the manufacturer datasheet. This layout prevents digital transient currents from coupling into the reference and degrading the 8-bit conversion accuracy.
Driven by the half-flash architecture, the MAX153EAP+ can briefly demand peak currents during the conversion cycle; estimate ~5-10 mA peak at 1 Msps bursts. Decouple the VDD rail with both a bulk tantalum/electrolytic capacitor and a ceramic, sized so the supply stays within the 100 mV ripple budget during 1 MHz acquisition bursts.
Use a low-impedance source follower or op-amp buffer (such as the MAX4165) at the AIN pin to avoid input-bandwidth-induced errors. Estimated: with 5 V reference and 25 MHz source bandwidth, keep series source impedance below 1 kΩ to limit the 1 LSB settling error during the 660 ns acquisition window.
Do not exceed the VREF input range or leave VREF floating; the converter draws reference current through VREF and a floating reference prevents proper conversion. Tie MODE correctly for unipolar versus bipolar operation, and ensure CS and RD timing satisfy the datasheet minimums for full-speed 1 Msps reads.
合規資訊
RoHS and REACH compliant per Maxim/Analog Devices product page; lead-free finish; not AEC-Q100 qualified (industrial E-grade is for non-automotive applications).
