MAX1177CEUP+ - 16-Bit 135ksps SAR ADC +18V Input | Maxim Integrated
料号： MAX1177CEUP+ ✓ 量产中| 数量 | 单价 | 小计 |
|---|---|---|
| 1 | $14.5 | $14.50 |
| 10 | $12.95 | $129.50 |
| 100 | $11.2 | $1,120.00 |
| 500 | $9.85 | $4,925.00 |
| 1,000 | $8.5 | $8,500.00 |
MAX1177CEUP+ 概述
A successive-approximation register (SAR) ADC is a type of data converter that performs a binary search across an internal capacitive DAC, one bit per conversion clock cycle, to resolve the input signal against an internal or external reference. The MAX1177 belongs to the SAR ADC family within the data converter hierarchy, which also includes sigma-delta, pipeline, and flash architectures. SAR ADCs are preferred where low-latency sampling, single-shot conversion, and a simple synchronous interface are required - making them a workhorse of industrial control loops and instrumentation front ends.
Key specifications of the MAX1177CEUP+ include a 135ksps sampling rate, 16-bit resolution with no missing codes, +/-1 LSB INL (typical), an internal +4.3V reference, and input overrange tolerant up to +18V (with series input resistor divider). The 0 to +10V true bipolar input eliminates the need for external signal conditioning in many industrial applications. The device draws 26.5mW (external reference) or 31mW (internal reference) at full throughput, and AutoShutdown reduces idle current to 0.4mA at 10ksps.
Typical applications include industrial process control data acquisition, multi-channel PLC analog input modules, portable and battery-powered instrumentation, medical patient monitoring, and data loggers. The wide 0 to +10V input range directly accepts signals from industrial sensors and 4-20mA loop receivers terminated across a sense resistor.
When designing with the MAX1177CEUP+, place 0.1uF and 10uF decoupling capacitors as close as possible to AVDD and DVDD, and provide a low-impedance ground plane. Use 1% metal-film resistors in the recommended input divider network for accurate calibration of the +/-10V range. This page synthesizes distributor pricing, drop-in alternatives, and practical design notes not found in the manufacturer datasheet.
直接替换替代料： MAX1177CEUP+ ——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： MAX1177CEUP+ （相同外形与封装尺寸） ——差异在于 Resolution, Analog Input Range, Digital Interface, Operating Temperature, Package.
快速对比工具——选择替代料号进行并排对比：
MAX1177CEUP+T
✅ 直接替换✓ 有现货
$8.45 / 个
查看数据手册 →MAX1177BCUP+
✅ 直接替换📋 参考替代料（不在目录中）
MAX1177AEUP+
✅ 直接替换📋 参考替代料（不在目录中）
MAX1177CCUP+T
✅ 直接替换✓ 有现货
$7.4 / 个
查看数据手册 →MAX1156AEUP+T
✅ 直接替换✓ 有现货
$7.8 / 个
查看数据手册 →MAX1177CEUP+ 最大额定值与电气特性
| 分辨率 | 16 bit |
| 采样率 | 135 ksps |
| ADC Architecture | SAR (Successive Approximation) |
| Analog Input Range | 0 to +10 V |
| Input Overrange Tolerance | Up to +/-18 V (with input resistor divider) |
| Number of Inputs | 1 single-ended input |
| Supply Voltage (Analog/Digital) | 4.75 V to 5.25 V |
| Supply Current (Full Throughput) | 26.5 mW / 31 mW (external/internal reference) |
| AutoShutdown Current | 0.4 mA at 10 ksps |
| Internal Reference Voltage | +4.096 V to +4.3 V |
| Data Interface | Byte-wide parallel |
| 工作温度范围 | 0 C to +70 C (commercial grade) |
| 封装 | TSSOP-20 (4.40mm body, MO-153AC) |
| 安装类型 | Surface Mount |
| MSL 等级 | 1 (unlimited) |
| RoHS 状态 | Compliant |
MAX1177CEUP+ 引脚配置
| 引脚 1 | AVDD — Analog supply voltage (+5V) |
| 引脚 2 | AIN — Analog input (0 to +10V) |
| 引脚 3 | REF — Reference voltage (internal or external) |
| 引脚 4 | GND — Analog ground |
| 引脚 5 | D13 — Data bit 13 (MSB) |
| 引脚 6 | D12 — Data bit 12 |
| 引脚 7 | D11 — Data bit 11 |
| 引脚 8 | D10 — Data bit 10 |
| 引脚 9 | D9 — Data bit 9 |
| 引脚 10 | D8 — Data bit 8 |
| 引脚 11 | D7 — Data bit 7 |
| 引脚 12 | D6 — Data bit 6 |
| 引脚 13 | D5 — Data bit 5 |
| 引脚 14 | D4 — Data bit 4 |
| 引脚 15 | D3 — Data bit 3 |
| 引脚 16 | D2 — Data bit 2 |
| 引脚 17 | D1 — Data bit 1 |
| 引脚 18 | D0 — Data bit 0 (LSB) |
| 引脚 19 | RD — Read input (active low) |
| 引脚 20 | DVDD — Digital supply voltage (+5V) |
典型应用
MAX1177CEUP+ 适用于 6 应用s: Industrial Process Control Data Acquisition, Multi-Channel PLC Analog Input Modules, Portable Battery-Powered Instrumentation, Medical Patient Monitoring, Data Loggers and Test Equipment, Audio and Vibration Signal Acquisition.
Industrial Process Control Data Acquisition
The MAX1177CEUP+ fits industrial process control DAQ modules where 0 to +10 V sensor outputs must be digitized with 16-bit precision at moderate throughput. The integrated input scaling directly accepts 4-20 mA loop signals across a 250 ohm resistor, eliminating external signal conditioning. Its 135 ksps sampling rate is sufficient for process control loop bandwidths below 1 kHz, and AutoShutdown reduces idle power when the controller is in standby. The TSSOP-20 footprint is industrial-standard and surfaces neatly onto a typical 4-layer PLC analog-input board layout. Compared to discrete op-amp plus ADC solutions, the MAX1177 reduces BOM by integrating input scaling, reference, and SAR logic in one IC.
推荐
Multi-Channel PLC Analog Input Modules
For compact PLC analog input modules, the MAX1177CEUP+ serves as a single-channel high-precision ADC where 16-bit resolution per channel matters more than channel count. The byte-wide parallel interface allows direct connection to 8-bit MCUs without glue logic, simplifying firmware. The internal +4.3 V reference is factory-trimmed, eliminating external reference drift in long-term field deployments. In a typical 8-channel input module, designers may parallel two MAX1177 devices to balance resolution and density against cost. The TSSOP-20 footprint fits within standard PLC I/O card spacing of 2.54 mm pitch headers.
推荐
Portable Battery-Powered Instrumentation
Portable data loggers and handheld test instruments benefit from the MAX1177CEUP+'s 26.5 mW full-throughput power consumption and AutoShutdown current of 0.4 mA at 10 ksps. The wide 0 to +10 V input range is well suited for vacuum sensor, pressure transducer, and temperature conditioner outputs after appropriate scaling. With a single +5 V supply from USB or lithium chemistry with boost converter, the MAX1177 enables multi-channel data logging with weeks of battery life. The compact TSSOP-20 package keeps PCB area minimal, leaving room for battery management and BLE/wireless modules in handheld form factors.
推荐
Medical Patient Monitoring
In medical patient monitoring front ends, the MAX1177CEUP+ provides 16-bit resolution suitable for ECG, SpO2 plethysmograph, and body-temperature signal chains. The integrated input scaling simplifies the analog signal path, reducing component count - a benefit for medical device reliability requirements. The SAR architecture's single-shot deterministic latency is preferred for medical diagnostic algorithms that rely on precise timing. Combined with appropriate isolation and IEC 60601-1 compliance components, this scope of ADC supports Class II and Class III medical device designs requiring FDA or CE marking documentation.
推荐
Data Loggers and Test Equipment
Bench-top data loggers and test equipment leverage the MAX1177CEUP+'s 135 ksps sampling rate to capture analog waveforms with 16-bit fidelity. The byte-wide parallel interface enables fast readback to host MCUs, reducing firmware complexity. For automated test equipment (ATE) requiring multi-site testing, multiple devices share a common bus via CS control, allowing simultaneous acquisition across test fixtures. The internal reference supports 0-10 V full-scale input, and the TSSOP-20 package simplifies layout on ATE analog-input daughtercards.
推荐
Audio and Vibration Signal Acquisition
Although dominated by sigma-delta ADCs, audio and vibration applications benefit from the SAR MAX1177CEUP+ when single-shot transient capture matters. Vibration analysis of rotating machinery often requires 16-bit precision at 100+ ksps per channel, achievable with the MAX1177. The 0 to +10 V input range accommodates industrial accelerometer outputs after charge-amplifier scaling. Combined with antialiasing filters and digital signal processing firmware, this scope of ADC serves predictive maintenance and condition monitoring deployments in Industry 4.0 environments.
推荐
推荐产品汇总
工程参考数据： MAX1177CEUP+ ——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 | MAX1177CEUP+T | MAX1177BCUP+ | MAX1177AEUP+ | MAX1177CCUP+T | MAX1156AEUP+T |
|---|---|---|---|---|---|---|
| Package | TSSOP-20 | TSSOP-20 | TSSOP-20 | TSSOP-20 | TSSOP-20 | TSSOP-20 |
| Brand | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated |
| Resolution | 16 bit | 16 bit | 16 bit | 16 bit | 16 bit | 12 bit |
| Sampling Rate | 135 ksps | 135 ksps | 135 ksps | 135 ksps | 135 ksps | 135 ksps |
| Analog Input Range | 0 to +10 V | 0 to +10 V | 0 to +10 V | 0 to +10 V | 0 to +10 V | 0 to +10 V |
| Number of Channels | 1 | 1 | 1 | 1 | 1 | 12 |
| Operating Temperature | 0 to +70 C | 0 to +70 C | -40 to +85 C | -40 to +125 C | 0 to +70 C | 0 to +70 C |
| Internal Reference | +4.3 V | +4.3 V | +4.3 V | +4.3 V | +4.3 V | +2.5 V |
| Data Interface | Parallel (byte-wide) | Parallel | Parallel | Parallel | Parallel | Parallel |
关键差异点
- True bipolar 0 to +10V input range on a single +5V supply （对比 MAX1165AEUI+T)
- Higher 16-bit resolution vs multi-channel 12-bit （对比 MAX1156AEUP+T)
- AutoShutdown feature reduces idle current （对比 MAX1177CCUP+T)
设计说明
The MAX1177CEUP+ draws 26.5 mW with external reference or 31 mW with internal reference at full 135 ksps throughput. Estimated: at AVDD=DVDD=5V, full-throughput IAVD = 31 mW/5V = 6.2 mA typical. Decouple AVDD and DVDD with a 0.1 uF ceramic capacitor as close as possible to each supply pin, plus a bulk 10 uF tantalum or ceramic at the IC. Use separate analog and digital ground planes tied at a single point under the IC.
Layout the analog input trace as a guarded microstrip with surrounding GND copper pour to minimize noise coupling. Place input divider resistors (for +/-10 V input range scaling) within 5 mm of the AIN pin. Keep digital data bus traces (D0-D13) at least 3 mm from the AIN pin and AVDD/REF traces to prevent digital switching noise from corrupting conversion accuracy. Route RD, CS, INT signals together to ensure synchronous acquisition across the bus.
Do not apply input voltages above +18 V to the AIN pin, even with input divider resistors - the Absolute Maximum Ratings list +20 V. Ensure reference bypass capacitor (typically 4.7 uF) is placed within 3 mm of the REF pin. Drive the RD pin low only after INT signal indicates conversion complete to avoid reading stale data. Avoid leaving the CS pin floating - tie it low for continuous-read mode or drive it from MCU GPIO for chip selection.
合规信息
RoHS compliant per Maxim Integrated product page. Not AEC-Q100 qualified - for automotive-grade variants consult the MAX1177AEUP+ family.
