MAX152CAP+T - 8-Bit 400ksps 3V Precision ADC | Maxim Integrated
MPN： MAX152CAP+T ✓ 啟用中MAX152CAP+T 概覽
An ADC (analog-to-digital converter) is a mixed-signal integrated circuit that converts a continuous analog input voltage into a discrete digital code, typically for processing, display, or transmission by a downstream digital controller. ADCs sit inside the data converter family of signal chain ICs, which also includes DACs (digital-to-analog converters) and codecs. ADCs are categorized by architecture - successive-approximation (SAR), pipeline, sigma-delta, and flash/semi-flash - each making different trade-offs between speed, resolution, and power. The MAX152's semi-flash (two-step flash) architecture is a cost-effective compromise that delivers flash-class speed at roughly half the comparator count of a true flash converter.
Key features include 400ksps throughput, 8-bit parallel output, an internal 2.5V reference, single 3V supply operation, internal track/hold, 1uA power-down current, and 1.8 microsecond conversion time. The 20-pin SSOP package offers a small footprint for portable and space-constrained designs. The MAX152 also provides a power-up time of 900ns and supports both unipolar and bipolar input ranges.
From a technical perspective, the semi-flash architecture uses two 4-bit flash ADCs in tandem with a DAC to achieve 8-bit resolution in two clock cycles. The internal track/hold eliminates the need for an external sample-and-hold amplifier in most applications. The parallel data interface simplifies connection to microprocessors, DSPs, and FPGAs without requiring serial protocol overhead.
Typical applications include portable instrumentation, data logging, battery-powered measurement systems, process control front-ends, and digital signal processing front-ends. The wide input bandwidth (300kHz) makes the MAX152 useful for audio-bandwidth signal acquisition.
When designing with the MAX152, ensure the input signal stays within the 0V to VREF range for unipolar operation, or use the bipolar input configuration for +/-VREF/2 ranges. Decouple VDD with a 0.1uF ceramic capacitor placed close to the IC. The reference bypass capacitor value directly affects noise performance - use the value recommended in the datasheet typical operating circuit.
This page synthesizes distributor stock data, parametric cross-references, and practical design notes that go beyond what a bare datasheet provides.
直接替換替代品，適用於 MAX152CAP+T — 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： MAX152CAP+T （相同外形與佔位） — 差異在於 Package, Architecture, Operating Temperature, Power-Down Current, Resolution.
MAX152EAP+T
✅ 直接替換📋 參考替代品（不在目錄中）
MAX152CAP+
✅ 直接替換聯絡詢價
查看資料表 →MAX1240ACSA+TG069
✅ 直接替換聯絡詢價
查看資料表 →MAX1202ACAP
✅ 直接替換聯絡詢價
查看資料表 →MAX152CAP+T 最大額定值與電氣特性
| Manufacturer | Analog Devices / Maxim Integrated |
| 解析度 | 8 bit |
| 取樣率 | 400 ksps |
| Number of Channels | 1 |
| Architecture | Semi-flash (two-step flash) |
| Data Interface | Parallel |
| Input Type | Single-ended |
| 供應電壓 | 2.7 V to 3.6 V (single supply) |
| Conversion Time | 1.8 us |
| Power-Up Time | 900 ns |
| Input Bandwidth | 300 kHz (full power) |
| Operating Current | 1.5 mA |
| Power-Down Current | 1 uA |
| Reference | Internal 2.5 V |
| 封裝 | 20-SSOP (0.209 inch, 5.30 mm width) |
| 工作溫度 | 0C to +70C (commercial grade) |
| Packaging | Tape & Reel |
| Track/Hold | Internal |
| RoHS 狀態 | Compliant |
MAX152CAP+T 腳位配置
| 腳位 1 | VDD — Power supply input, +2.7V to +3.6V |
| 腳位 2 | REF — Reference voltage input/output, internal 2.5V |
| 腳位 3 | REFADJ — Reference adjust pin |
| 腳位 4 | GND — Analog ground |
| 腳位 5 | AIN — Analog input |
| 腳位 6 | DGND — Digital ground |
| 腳位 7 | D0 — Data bit 0 (LSB) |
| 腳位 8 | D1 — Data bit 1 |
| 腳位 9 | D2 — Data bit 2 |
| 腳位 10 | D3 — Data bit 3 |
| 腳位 11 | D4 — Data bit 4 |
| 腳位 12 | D5 — Data bit 5 |
| 腳位 13 | D6 — Data bit 6 |
| 腳位 14 | D7 — Data bit 7 (MSB) |
| 腳位 15 | INT — Interrupt / conversion complete output |
| 腳位 16 | CS — Chip select, active low |
| 腳位 17 | RD — Read strobe, active low |
| 腳位 18 | CLK — External clock input |
| 腳位 19 | PD — Power-down control, active high |
| 腳位 20 | NC — Not connected (per datasheet) |
典型應用
MAX152CAP+T 適用於 6 應用s: Portable Data Acquisition Systems, Audio-Bandwidth Digitization, Process Control Front-Ends, DSP Front-End Signal Digitization, Digital Panel Meter and Instrumentation, Battery Monitoring and Telemetry.
Portable Data Acquisition Systems
The MAX152CAP+T is well suited for portable battery-powered data acquisition due to its 2.7V-3.6V single-supply operation, 1.5 mA active current, and 1 uA power-down mode. At 400ksps with 8-bit resolution and an internal track/hold, it captures transient sensor signals in handheld multimeters, field recorders, and IoT sensor hubs without an external sample-and-hold amplifier. The 20-SSOP package fits inside compact enclosures, and the parallel data interface connects directly to low-cost microcontrollers without SPI overhead.
推薦
Audio-Bandwidth Digitization
The MAX152CAP+T's 300kHz full-power input bandwidth comfortably covers the audio frequency range, making it a practical ADC for digitizing audio-band signals in consumer and prosumer products. At 400ksps it exceeds the 44.1ksps requirement for CD-quality audio by a wide margin, leaving headroom for anti-aliasing margin. The semi-flash design avoids the latency of sigma-delta converters, addressing the need for low-latency audio monitoring in intercom systems, hearing aids, and musical instrument preamps.
推薦
Process Control Front-Ends
Industrial process control front-ends require reliable mid-speed conversion of transducer signals (temperature, flow, pressure). The MAX152CAP+T's parallel interface simplifies connection to legacy PLC backplanes and DSPs, while the 3V supply integrates with modern 3.3V logic. The internal 2.5V reference reduces external component count. For harsher industrial environments, the MAX152EAP+T (extended -40C to +85C) is the recommended variant in the same SSOP-20 footprint.
推薦
DSP Front-End Signal Digitization
The MAX152CAP+T's parallel data output and 400ksps throughput make it a natural match for DSP front-ends in motor control, audio processing, and signal analysis. The semi-flash architecture delivers predictable single-cycle conversion latency, which simplifies DSP interrupt handling compared with sigma-delta ADCs. Combined with an internal track/hold and a small 20-SSOP footprint, it fits easily alongside DSPs in compact embedded boards.
推薦
Digital Panel Meter and Instrumentation
The MAX152CAP+T is well matched to digital panel meters and bench instrumentation where 8-bit resolution (1 part in 256) is sufficient for indication and trending rather than precision measurement. The 400ksps throughput enables real-time update rates without flicker. The 3V single supply simplifies power design in handheld DMMs, and the SSOP-20 package mounts alongside LCD drivers and microcontrollers in compact meter enclosures.
推薦
Battery Monitoring and Telemetry
Low-power battery monitoring applications benefit from the MAX152CAP+T's 1 uA power-down current and fast 900ns power-up time, enabling duty-cycled ADC operation to extend battery life. At 2.7V minimum supply, it can digitize cell voltages down to the deepest discharge point of single-cell Li-ion batteries. The internal reference simplifies BOM, and the parallel interface can wake a microcontroller briefly to read samples and return to sleep mode.
推薦
推薦產品摘要
工程參考資料，適用於 MAX152CAP+T — 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 | MAX152EAP+T | MAX152CAP+ | MAX1240ACSA+TG069 | MAX1202ACAP |
|---|---|---|---|---|---|
| Brand | Analog Devices / Maxim Integrated | Analog Devices / Maxim Integrated | Analog Devices / Maxim Integrated | Analog Devices / Maxim Integrated | Analog Devices / Maxim Integrated |
| Package | 20-SSOP | 20-SSOP - same | 20-SSOP - same | 20-SSOP - same | 20-SSOP - same |
| Resolution | 8 bit | 8 bit | 8 bit | 12 bit | 12 bit |
| Sampling Rate | 400 ksps | 400 ksps | 400 ksps | 400 ksps | 200 ksps |
| Supply Voltage | 2.7V to 3.6V | 2.7V to 3.6V | 2.7V to 3.6V | 2.7V to 3.6V | 2.7V to 3.6V |
| Operating Temperature | 0C to +70C | -40C to +85C | 0C to +70C | 0C to +70C | 0C to +70C |
| Architecture | Semi-flash | Semi-flash | Semi-flash | SAR | SAR |
| Data Interface | Parallel | Parallel | Parallel | Serial | Serial |
主要差異化特點
- Semi-flash architecture delivers 400ksps at 8-bit without true flash complexity (對比MAX1202ACAP)
- Parallel data interface for direct microprocessor/DSP connection (對比MAX1240ACSA+TG069)
- Internal track/hold eliminates external sample/hold amplifier (對比Discrete ADC designs without track/hold)
設計說明
The MAX152CAP+T operates from a single +2.7V to +3.6V supply and draws 1.5 mA in operating mode. Place a 0.1 uF ceramic bypass capacitor as close as possible to the VDD pin, with a 10 uF tantalum or ceramic bulk capacitor on the supply rail. The power-down pin (PD) reduces supply current to 1 uA when idle and the part powers up within 900ns, supporting aggressive duty cycling in battery-powered designs.
Do not exceed the 3.6V absolute maximum supply voltage; over-voltage damages the part. Ensure analog input stays within the 0V to VREF range for unipolar operation, or use the bipolar input configuration for +/-VREF/2 ranges. Avoid driving AIN with source impedances above the datasheet-specified maximum without an external buffer, as this degrades AC performance. The reference bypass capacitor value directly affects noise - use the value recommended in the datasheet typical operating circuit, not a generic 0.1uF.
Separate analog and digital ground planes, joining them at a single point near the MAX152's GND pin to avoid digital switching noise coupling into the analog input. Route the analog input trace away from the parallel data bus and clock traces; if they must cross, cross at 90 degrees. Place the reference bypass capacitor immediately adjacent to the REF pin with a short, wide trace to minimize inductance. The exposed pad (if present on the SSOP variant) should be soldered to the analog ground plane for thermal dissipation.
The MAX152CAP+T achieves its 400ksps throughput with 300kHz full-power input bandwidth; analog input signals should be bandwidth-limited to 300kHz with an external anti-aliasing filter placed close to AIN. For full 8-bit performance, keep the analog input rise/fall times longer than 1 microsecond. The parallel data bus should be buffered if the load exceeds the datasheet-specified maximum capacitive load, as excessive bus loading causes logic-level timing violations at maximum sampling rates.
合規資訊
RoHS compliant per Maxim Integrated product page. Not AEC-Q100 qualified - this is a commercial-grade part (0C to +70C); for industrial temperature, choose MAX152EAP+T in the same SSOP-20 package.
