MX7575SQ/883B - 8-Bit 5µs SAR ADC, MIL-883B | Maxim Integrated
部品番号: MX7575SQ/883B ✗ 生産終了| 数量 | 単価 | 小計 |
|---|---|---|
| 1 | $18.5 | $18.50 |
| 10 | $16.2 | $162.00 |
| 100 | $13.85 | $1,385.00 |
| 500 | $12.1 | $6,050.00 |
| 1,000 | $10.75 | $10,750.00 |
MX7575SQ/883B 概要
What is a SAR ADC? A successive-approximation-register analog-to-digital converter is a type of data converter that uses a binary-search algorithm against an internal precision DAC to determine each bit of the output word in N clock cycles for an N-bit converter. SAR ADCs occupy the middle ground between flash ADCs (fastest, lowest resolution) and sigma-delta ADCs (highest resolution, slowest); they are the workhorse converter for 8-to-16-bit industrial, instrumentation, and process-control sampling because they deliver a single conversion on demand with deterministic latency and modest power consumption.
Key features of the MX7575SQ/883B include a single +5 V supply operation, parallel data output for direct µP bus connection, a built-in track-and-hold, and a ratiometric reference input that lets the user scale full-scale range to any span between 0 V and VREF. The /883B suffix indicates the part is processed to MIL-STD-883B, including burn-in and extended temperature screening, making it suitable for avionics, missile guidance, and ruggedized industrial systems.
Architecturally, the MX7575 family combines a CMOS successive-approximation register, a precision thin-film DAC ladder, and a CMOS comparator on a single die. The 5 µs typical conversion time at 8 bits resolution corresponds to roughly 200 kSPS sampling capability, which is sufficient for control-loop digitizing, vibration monitoring, and multiplexed data acquisition.
Typical applications include military/aerospace data acquisition systems, industrial process-control analog input modules, multiplexed 4-to-16 channel scanning digitizers, vibration and acoustic monitoring front-ends, and legacy µP-based instrumentation where parallel-output ADCs simplify interface glue logic. The ceramic DIP package and MIL-STD-883B screening also make it a preferred choice for new designs that must trace to MIL-PRF-38535 qualified manufacturing lines.
When designing with this converter, route the analog input trace as a guard-ring-protected microstrip, decouple VDD and VREF with 10 µF tantalum in parallel with 100 nF ceramic at the package pins, and drive /CS and the conversion-start logic with a clean digital supply. The reference pin must be bypassed with at least 1 µF to ground.
This page synthesizes distributor availability (5100 units in stock per icDirectory as of 2026-10-15), MIL-STD-883B qualification notes, and same-package Maxim cross-references that you will not find aggregated in the manufacturer datasheet PDF alone.
ドロップイン代替品: MX7575SQ/883B — 同一パッケージでピン互換。PCBの作り直しが必要な異なるパッケージの部品は除外されています。
このシリーズのバリエーション
同一シリーズでドロップイン互換のモデル: MX7575SQ/883B （同一形状・フットプリント） — 相違点: Mounting Type, Resolution, Architecture, Conversion Method, Number of Terminals.
クイック比較ツール — 並列比較する代替部品を選択:
MX7575SQ
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MX7575KN
✅ ドロップイン📋 参考代替品（カタログ未掲載）
MX7575JN
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
MX7575BQ
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
MX7575CWI
✅ ドロップイン ⚠️ 仕様未検証📋 参考代替品（カタログ未掲載）
MX7575SQ/883B 最大定格＆電気的特性
| Manufacturer | Maxim Integrated (now Analog Devices) |
| Part Number | MX7575SQ/883B |
| 機能 | ADC, Successive Approximation, 8-Bit, 1-Channel |
| 分解能 | 8 bit |
| Conversion Time (typical) | 5 µs |
| Conversion Time (max) | 10 µs |
| Number of Channels | 1 |
| Data Access | Parallel, 8-bit |
| Input Type | Single-ended analog, ratiometric reference |
| Architecture | SAR with internal DAC and track-and-hold |
| 電源電圧 | +5 V (single supply) |
| Process Technology | CMOS |
| パッケージ / ケース | 18-CDIP (ceramic DIP, through-hole) |
| Package Code | DIP |
| Terminal Form | Through-Hole |
| Number of Terminals | 18 |
| Package Shape | Rectangular |
| Temperature Grade | Military |
| Qualification | MIL-STD-883B (suffix /883B) |
| 実装タイプ | Through-Hole |
MX7575SQ/883B ピン構成
| ピン 1 | VREF — Reference voltage input (ratiometric) |
| ピン 2 | ANALOG IN — Analog input (single-ended) |
| ピン 3 | AGND — Analog ground |
| ピン 4 | DB7 — Parallel data output bit 7 (MSB) |
| ピン 5 | DB6 — Parallel data output bit 6 |
| ピン 6 | DB5 — Parallel data output bit 5 |
| ピン 7 | DB4 — Parallel data output bit 4 |
| ピン 8 | DB3 — Parallel data output bit 3 |
| ピン 9 | DB2 — Parallel data output bit 2 |
| ピン 10 | DB1 — Parallel data output bit 1 |
| ピン 11 | DB0 — Parallel data output bit 0 (LSB) |
| ピン 12 | DGND — Digital ground |
| ピン 13 | /CS — Chip select (active low) |
| ピン 14 | /RD — Read strobe (active low) |
| ピン 15 | /WR — Write/conversion start (active low) |
| ピン 16 | CLK — External clock input |
| ピン 17 | BUSY — Conversion busy / status flag |
| ピン 18 | VDD — +5 V power supply |
主な用途
MX7575SQ/883B の用途: 6 件s: Military/Aerospace Data Acquisition Systems, Industrial Process Control Analog Input Modules, Multiplexed 4-to-16 Channel Scanning Digitizers, Vibration and Acoustic Monitoring Front-Ends, Legacy µP-Based Instrumentation, Avionics Multiplexed Sensor Digitizing.
Military/Aerospace Data Acquisition Systems
The MX7575SQ/883B fits military and aerospace data acquisition because its MIL-STD-883B qualification, -55°C to +125°C screening, and hermetic 18-pin ceramic DIP package are accepted by MIL-PRF-38535 procurement lines. With a 5 µs typical conversion time and 8-bit parallel output, it digitizes flight-control sensor multiplexers and stores raw FCS. Unlike commercial ADCs, the /883B suffix guarantees burn-in and lot traceability required for avionics.
おすすめ
Industrial Process Control Analog Input Modules
The MX7575SQ/883B is well-suited to ruggedized industrial process-control analog input modules because its 5 µs conversion is fast enough for thermocouple and pressure transducer multiplexing on 4-20 mA loops. The single +5 V supply simplifies isolated power design, and the ratiometric reference lets designers scale FS to any span. Per the Maxim datasheet, the parallel bus interfaces directly to 8085/8051-class microcontrollers without external latches.
おすすめ
Multiplexed 4-to-16 Channel Scanning Digitizers
The MX7575SQ/883B serves as the converter core in multiplexed 4-to-16 channel scanning digitizers because its 5 µs conversion time allows 50-100 kSPS aggregate throughput across an external analog multiplexer. The parallel output bus simplifies backplane wiring, and the single +5 V supply is compatible with CMOS mux families like the 4051/4052. Compared to integrating ADCs, the SAR topology avoids 50/60 Hz line-cycle synchronization requirements.
おすすめ
Vibration and Acoustic Monitoring Front-Ends
The MX7575SQ/883B fits vibration and acoustic monitoring front-ends because its 5 µs conversion supports sampling rates up to ~200 kSPS, sufficient for vibration spectrum analysis on rotating machinery and acoustic emission monitoring. The 8-bit resolution is acceptable for envelope detection and broadband RMS measurement. The MIL-STD-883B screening allows deployment in engine bay and naval monitoring systems where commercial ADCs would fail.
おすすめ
Legacy µP-Based Instrumentation
The MX7575SQ/883B is a natural fit for legacy µP-based instrumentation (8051, 8085, Z80 buses) because its parallel 8-bit data output interfaces directly without external latches, and the /CS, /RD, /WR control logic maps cleanly to standard µP read/write strobes. New designs can re-use legacy PCB footprints while gaining MIL-grade reliability. Compared to serial-output ADCs, the parallel output eliminates bit-banging software and reduces µP overhead.
おすすめ
Avionics Multiplexed Sensor Digitizing
The MX7575SQ/883B is used in avionics multiplexed sensor digitizing subsystems because its MIL-STD-883B screening and ceramic DIP hermeticity allow direct installation in pressurized and unpressurized aircraft zones. The ratiometric reference input lets designers scale the FS range to any sensor span (RTD, strain gauge, LVDT) without external precision components. Compared to flash ADCs, the SAR topology provides a clean trade-off between 8-bit resolution and 5 µs speed at low power.
おすすめ
おすすめ製品の概要
エンジニアリング参考データ: MX7575SQ/883B — 比較、設計ガイダンス、コンプライアンス情報。
選定ガイド
代替品との比較
| パラメータ | この製品 | MX7575SQ | MX7575KN | MX7575JN | MX7575BQ | MX7575CWI |
|---|---|---|---|---|---|---|
| Package | CDIP-18 (ceramic DIP, MIL-STD-883B) | CDIP-18 - same | PDIP-18 - same pin count, plastic | PDIP-18 - same | CDIP-18 - same | SOIC-18 - same pin count, SMD |
| Brand | Analog Devices (formerly Maxim Integrated) | Analog Devices | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Resolution | 8 bit | 8 bit | 8 bit | 8 bit | 8 bit | 8 bit |
| Conversion Time (typ) | 5 µs | 5 µs | 5 µs | 5 µs | 5 µs | 5 µs |
| Conversion Time (max) | 10 µs | 10 µs | 10 µs | 10 µs | 10 µs | 10 µs |
| Supply Voltage | +5 V single | +5 V single | +5 V single | +5 V single | +5 V single | +5 V single |
| Temperature Grade / Qualification | Military, MIL-STD-883B | Military (no /883B screening) | Commercial | Commercial | Military, MIL-STD-883B Class B | Wide-temp SOIC |
| Output Interface | Parallel 8-bit | Parallel 8-bit | Parallel 8-bit | Parallel 8-bit | Parallel 8-bit | Parallel 8-bit |
主な差別化要因
- MIL-STD-883B screening with full burn-in and traceability （vs MX7575KN (commercial plastic PDIP18))
- Hermetic ceramic CDIP-18 package （vs MX7575CWI (SOIC-18 wide-temp))
- Tighter linearity screening class （vs MX7575SQ (non-/883B military CDIP))
設計ノート
Estimated: at +5 V supply and 5 µs conversion cadence, the MX7575SQ/883B draws approximately 5-10 mA active and <100 µA standby. Decouple VDD (pin 18) and VREF (pin 1) with 10 µF tantalum in parallel with 100 nF ceramic placed within 5 mm of the package pins to suppress digital switching noise that would otherwise couple into the comparator decision points during the SAR bit-trials.
Route the analog input (pin 2) as a guard-ring-protected microstrip with the analog ground (pin 3) used as a quiet ground reference. Keep digital bus lines (DB0-DB7, /CS, /RD, /WR) on the opposite PCB side and join AGND and DGND only at the package pin. Place the reference bypass capacitor (>=1 µF) directly on the VREF pin to maintain 8-bit linearity.
Do not exceed the absolute maximum analog input range of VREF; signals outside this range cause saturation and may damage the input ESD structure. Do not leave the /CS pin floating - tie it to logic high via 10 kΩ when not actively driven. Verify the BUSY (pin 17) timing margin against the µP read cycle to avoid stale-data reads.
コンプライアンス情報
MIL-STD-883B variants are typically SnPb-lead-finished for hermeticity; RoHS compliance not standard. Not AEC-Q100 (automotive) - this is a MIL-grade part, not automotive.
