MAX1165ACUI+ - 16-Bit 165ksps SAR ADC, Parallel | Maxim
MPN: MAX1165ACUI+ ✗ Cuối đờiMAX1165ACUI+ Tóm tắt
An ADC (Analog-to-Digital Converter) is a mixed-signal data converter that transforms a continuous analog voltage into a discrete digital code, enabling microcontrollers, FPGAs, and DSPs to process real-world sensor and instrumentation signals. Successive-approximation ADCs use an internal binary-search algorithm combined with an internal DAC to resolve the input one bit per clock cycle, balancing speed, resolution, and power consumption. The MAX1165 family sits in the precision mid-speed converter segment of the data-converter hierarchy: ADC -> SAR ADC -> precision data converter -> mixed-signal IC -> semiconductor.
Key specifications include 16-bit resolution with no missing codes, ±1 LSB INL (typical), ±0.5 LSB DNL (typical), and an aperture bandwidth compatible with 165 ksps throughput. The parallel interface (8+8 byte-mode or 16-bit word-mode) provides glitch-free readback without the timing overhead of a serial ADC, and the part offers software-configurable input ranges via the input scaling network. The TSSOP-28 footprint gives a compact 0.65 mm pitch, surface-mount solution suitable for high-density data-acquisition boards.
Typical applications include industrial process-control loops, portable instrumentation and data loggers, battery-powered medical monitors, and multi-channel data-acquisition front ends using an external MUX. The wide input range and integrated reference simplify board-level design, while parallel output enables direct connection to a microcontroller external memory bus for high-throughput captures.
When designing with this device, ensure the analog input is bandwidth-limited (RC filter, typically 1 kΩ/1 nF) to avoid aliasing, and add 0.1 µF decoupling close to AVDD and DVDD. The PD pin can be tied to a microcontroller GPIO for power management in portable designs. Compute scheme, supplier scheme, and pin-compatible Scheme B variants are summarized in the comparison table below.
Bộ thay thế dễ dàng lắp đặt cho MAX1165ACUI+ — 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 MAX1165ACUI+ (cùng hình factor và footprint) — khác nhau ở Package, Analog Supply Voltage, Digital Supply Voltage, Operating Temperature, Input Type.
MAX1166ACUI+
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MAX1165BCUI+
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
MAX1165AEUI+
✅ Drop-InLiên hệ để biết giá
Xem tài liệu →MAX1166BEUI+
✅ Drop-In📋 Tham chiếu thay thế (không có trong danh mục)
AD7606BSTZ
✅ Drop-In✗ Hết hàng
$16.9 / Đơn vị
Xem tài liệu →MAX1165ACUI+ Tỷ lệ tối đa & tính chất điện
| Number of Bits | 16 |
| Tỷ lệ lấy mẫu | 165 ksps |
| Number of Input Channels | 1 (Single-Ended) |
| Input Type | Single-Ended, configurable scaling |
| Architecture | SAR (Successive Approximation) |
| Data Interface | Parallel, 8+8 byte mode / 16-bit word mode |
| Track-and-Hold Ratio (S/H:ADC) | 1:1 (integrated) |
| Number of A/D Converters | 1 |
| Reference Type | Internal 4.096 V (external option) |
| Configuration | S/H-ADC |
| Supply Voltage (Analog) | 4.75 V to 5.25 V |
| Supply Voltage (Digital) | 4.75 V to 5.25 V |
| Nhiệt độ hoạt động | 0 C to +70 C (Commercial) |
| Hộp | TSSOP-28 |
| Kiểu lắp đặt | Surface Mount |
| Trạng thái RoHS | Compliant (Pb-free suffix '+') |
| Lead-Free | Yes (suffix '+') |
Cấu hình chân MAX1165ACUI+
| Chân 1 | AIN — Analog Input |
| Chân 2 | AVDD — Analog +5 V Supply |
| Chân 3 | AGND — Analog Ground |
| Chân 4 | REF — Reference (Internal 4.096 V / External) |
| Chân 5 | REFGND — Reference Ground |
| Chân 6 | PD — Power-Down Input (active high) |
| Chân 7 | CS — Chip Select (active low) |
| Chân 8 | RD — Read Strobe (active low) |
| Chân 9 | HBEN — High-Byte Enable (selects 8/16-bit mode) |
| Chân 10 | D0 — Data Bit 0 (LSB) |
| Chân 11 | D1 — Data Bit 1 |
| Chân 12 | D2 — Data Bit 2 |
| Chân 13 | D3 — Data Bit 3 |
| Chân 14 | D4 — Data Bit 4 |
| Chân 15 | D5 — Data Bit 5 |
| Chân 16 | D6 — Data Bit 6 |
| Chân 17 | D7 — Data Bit 7 |
| Chân 18 | DVDD — Digital +5 V Supply |
| Chân 19 | DGND — Digital Ground |
| Chân 20 | D8 — Data Bit 8 |
| Chân 21 | D9 — Data Bit 9 |
| Chân 22 | D10 — Data Bit 10 |
| Chân 23 | D11 — Data Bit 11 |
| Chân 24 | D12 — Data Bit 12 |
| Chân 25 | D13 — Data Bit 13 |
| Chân 26 | D14 — Data Bit 14 |
| Chân 27 | D15 — Data Bit 15 (MSB) |
| Chân 28 | CLK — External Conversion Clock |
Ứng dụng tiêu biểu
MAX1165ACUI+ phù hợp cho 6 Áp dụngs: Industrial Process-Control Data Acquisition, Portable Battery-Powered Instrumentation, Medical Patient Monitoring Equipment, Multi-Channel Data Acquisition Front End, Weigh Scale and Strain-Gauge Front End, Audio and Acoustic Measurement Systems.
Industrial Process-Control Data Acquisition
The MAX1165ACUI+'s 16-bit resolution and 165 ksps sampling rate suit industrial process-control loops where a microcontroller reads analog signals from 4-20 mA transmitters, RTDs, or strain-gauge bridges. Its 5 V analog supply matches industrial +5 V sensor rails; the parallel interface avoids serial-clock overhead, allowing deterministic burst captures for PID loops. The integrated 4.096 V reference scales a 0-4.096 V input to a full 16-bit code (244 µV/LSB), and the track-and-hold front end settles within 200 ns. Compared to a serial ADC, the parallel interface removes SPI bit-banging from the controller firmware, simplifying real-time control code while still drawing under 10 mA total supply current during continuous conversion.
Được đề xuất
Portable Battery-Powered Instrumentation
The MAX1165ACUI+'s automatic power-down reduces supply current to microampere levels between samples - critical for battery-powered handheld instruments such as digital multimeters, portable scales, and field medical monitors. A microcontroller can take single conversions on demand, then power down the ADC between readings, extending battery life by 10-100x compared to a continuously-sampling ADC. The 5 V supply is compatible with four-cell NiMH packs (4.8 V nominal) or single-cell Li-ion with a boost converter. The TSSOP-28 package keeps the board footprint small (9.7 x 6.4 mm), and the parallel interface lets a low-cost 8051 or PIC microcontroller read conversion results without an SPI peripheral - valuable for cost-sensitive portable designs.
Được đề xuất
Medical Patient Monitoring Equipment
Medical patient-monitoring equipment (ECG, SpO2, blood-pressure modules) requires 16-bit resolution to capture small biopotential signals while rejecting quantization noise in the diagnostic bandwidth. The MAX1165ACUI+ samples ECG front-end outputs at up to 165 ksps, providing >80 kHz Nyquist bandwidth - more than sufficient for 500 Hz ECG plus respiration channels. Its single-ended input simplifies front-end design versus differential ADCs, and the integrated 4.096 V reference removes the need for an external precision reference, reducing BOM count for cost-sensitive medical devices. The 16-bit no-missing-codes performance ensures clean baseline traces for diagnostic algorithms, and the TSSOP-28 package supports the compact form factor of modern wearable medical devices.
Được đề xuất
Multi-Channel Data Acquisition Front End
Multi-channel data-acquisition boards (used in test & measurement, vibration analysis, and industrial data loggers) typically combine an external analog MUX (such as a MAX1156 or MAX306) with a fast SAR ADC. The MAX1165ACUI+ serves as the converter downstream of the MUX, with its 5 µs conversion time allowing each channel to be sequentially acquired at high effective throughput (10+ ksps per channel). The parallel output bus allows an FPGA or DSP to ingest conversion data directly without serial overhead, supporting deterministic sampling for vibration and modal-analysis applications. The 16-bit no-missing-codes performance captures dynamic range typical of strain-gauge and load-cell inputs, and the 5 V supply rails are easy to derive from common +5 V and +12 V analog board rails.
Được đề xuất
Weigh Scale and Strain-Gauge Front End
Weigh scales and force-measurement instruments rely on 16+ bit ADC resolution to resolve small load-induced bridge voltages. The MAX1165ACUI+ digitizes the differential bridge output (after an external instrumentation amplifier such as the MAX1162 or AD8421) with 16-bit resolution, giving 244 µV LSB at 4.096 V full-scale - sufficient for 0.01% resolution in 4-digit industrial scales. The internal reference provides a stable excitation-derived full-scale calibration point, simplifying firmware calibration. The automatic power-down feature extends battery operation for handheld scales; the TSSOP-28 footprint suits compact scale-controller boards where board area is at a premium.
Được đề xuất
Audio and Acoustic Measurement Systems
Audio-bandwidth measurement systems (sound-level meters, acoustic analyzers, ultrasonic flaw detectors) require 16-bit resolution and sampling rates of at least 44.1 ksps. The MAX1165ACUI+'s 165 ksps throughput provides 3x oversampling at CD-quality audio rates, reducing analog anti-aliasing filter complexity. The integrated track-and-hold and 16-bit no-missing-codes performance capture acoustic transients with high dynamic range, and the parallel interface allows a DSP to ingest conversion data at full bus bandwidth. The 5 V analog supply rails align with op-amp audio signal chains (MAX4475, OPA1612, AOP621) without requiring level shifting, and the TSSOP-28 package suits handheld acoustic-analyzer enclosures.
Được đề xuất
Tóm tắt các sản phẩm được đề xuất
Dữ liệu tham khảo kỹ thuật cho MAX1165ACUI+ — 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 | MAX1166ACUI+ | MAX1165BCUI+ | MAX1165AEUI+ | MAX1166BEUI+ | AD7606BSTZ |
|---|---|---|---|---|---|---|
| Brand | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated | Maxim Integrated | Analog Devices |
| Package | TSSOP-28 | TSSOP-28 - same | TSSOP-28 - same | TSSOP-28 - same | TSSOP-28 - same | TSSOP-28 - same footprint (verify pinout) |
| Resolution | 16-bit | 16-bit | 16-bit | 16-bit | 16-bit | 16-bit |
| Sampling Rate | 165 ksps | 165 ksps | 165 ksps | 165 ksps | 165 ksps | 200 ksps (+21%) |
| Input Channels | 1 single-ended | 1 single-ended | 1 single-ended | 1 single-ended | 1 single-ended | 8 single-ended/bipolar (+700%) |
| Operating Temperature | 0 to +70 C (Commercial) | -40 to +125 C (Industrial/Automotive) | 0 to +70 C (Commercial) | -40 to +85 C (Extended) | -40 to +125 C (Industrial/Automotive) | -40 to +85 C (Industrial) |
| Supply Voltage | +5 V single supply | +5 V single supply | +5 V single supply | +5 V single supply | +5 V single supply | +5 V analog / +3.3 V or +5 V digital |
| Reference | Internal 4.096 V | Internal 4.096 V | Internal 4.096 V | Internal 4.096 V | Internal 4.096 V | External 2.5 V reference required |
| Interface | Parallel (8/16-bit) | Parallel (8/16-bit) | Parallel (8/16-bit) | Parallel (8/16-bit) | Parallel (8/16-bit) | Parallel + Serial (SPI) |
| Lifecycle | Obsolete | Active (last-time-buy post-2026) | Obsolete | Obsolete | Active | Active |
Bảo phân biệt quan trọng
- Parallel interface with 16-bit single-cycle readback (vsMAX1162ACUB+T)
- Integrated 4.096 V precision reference (vsMAX1156AEUP+T)
- Industrial/automotive upgrade path available (MAX1166) (vsAD7606BSTZ)
Ghi chú thiết kế
The MAX1605ACUI+ (sic: MAX1165ACUI+) draws approximately 8 mA from AVDD and 1 mA from DVDD during continuous 165 ksps conversion. Decoupling: place a 10 µF tantalum plus 0.1 µF ceramic on AVDD, and a 1 µF ceramic plus 0.1 µF ceramic on DVDD, both within 5 mm of the supply pins. Estimated supply current at 1 ksps with PD active between conversions drops to ~50 µA average - useful for battery-powered portable designs.
Separate analog and digital ground planes joined only at the AGND/DGND pins. Route the analog input AIN on the analog side of the board, away from the parallel data bus (D0-D15) and the CLK trace - parallel data edges are a known coupling source into the analog input. Estimated: an ungrounded guard trace around AIN reduces digital-coupling noise by ~6 dB in a typical TSSOP-28 layout.
Add a 1 kΩ resistor and 1 nF capacitor anti-aliasing RC filter at the AIN pin; the -3 dB cutoff at 160 kHz is well above the 165 ksps Nyquist bandwidth (82.5 kHz). For clean switching effects, keep the analog input bandwidth well below Nyquist to avoid aliased spurs. The internal track-and-hold settles within 200 ns; allow at least 250 ns acquisition time before initiating conversion for full 16-bit accuracy.
Three common pitfalls to watch for. (1) Don't omit HBEN tie-up/down - leaving HBEN floating causes intermittent 8/16-bit bus mode errors. (2) Don't drive CS and RD simultaneously without checking the read-cycle timing - the datasheet t_CSS / t_RS parameters are 10 ns minimum. (3) Don't apply analog inputs before AVDD ramps or latch-up can occur - the analog input ESD structure rating is 1000 V HBM, so avoid unpowered transient overvoltage events.
Thông tin tuân thủ
Pb-free suffix '+' confirms RoHS compliance. Reach compliant per manufacturer declaration. Commercial temperature grade only; choose MAX1166 for AEC-Q100 grade.
