MX7575SQ/883B - 8-Bit 5µs SAR ADC, MIL-883B | Maxim Integrated
MPN: MX7575SQ/883B ✗ End of Life| Qty | Unit Price | Extended |
|---|---|---|
| 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 Overview
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.
Drop-in alternatives for MX7575SQ/883B — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Variants in this series
Same-series models that are drop-in compatible with MX7575SQ/883B (same form factor and footprint) — differing in Mounting Type, Resolution, Architecture, Conversion Method, Number of Terminals.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MX7575SQ
✅ Drop-In📋 Reference alternative (not in catalog)
MX7575KN
✅ Drop-In📋 Reference alternative (not in catalog)
MX7575JN
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
MX7575BQ
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
MX7575CWI
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
MX7575SQ/883B Maximum Ratings & Electrical Characteristics
| Manufacturer | Maxim Integrated (now Analog Devices) |
| Part Number | MX7575SQ/883B |
| Function | ADC, Successive Approximation, 8-Bit, 1-Channel |
| Resolution | 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 |
| Supply Voltage | +5 V (single supply) |
| Process Technology | CMOS |
| Package / Case | 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) |
| Mounting Type | Through-Hole |
MX7575SQ/883B Pin Configuration
| Pin 1 | VREF — Reference voltage input (ratiometric) |
| Pin 2 | ANALOG IN — Analog input (single-ended) |
| Pin 3 | AGND — Analog ground |
| Pin 4 | DB7 — Parallel data output bit 7 (MSB) |
| Pin 5 | DB6 — Parallel data output bit 6 |
| Pin 6 | DB5 — Parallel data output bit 5 |
| Pin 7 | DB4 — Parallel data output bit 4 |
| Pin 8 | DB3 — Parallel data output bit 3 |
| Pin 9 | DB2 — Parallel data output bit 2 |
| Pin 10 | DB1 — Parallel data output bit 1 |
| Pin 11 | DB0 — Parallel data output bit 0 (LSB) |
| Pin 12 | DGND — Digital ground |
| Pin 13 | /CS — Chip select (active low) |
| Pin 14 | /RD — Read strobe (active low) |
| Pin 15 | /WR — Write/conversion start (active low) |
| Pin 16 | CLK — External clock input |
| Pin 17 | BUSY — Conversion busy / status flag |
| Pin 18 | VDD — +5 V power supply |
Typical Applications
MX7575SQ/883B is suitable for 6 applications: 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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
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.
Recommended
Recommended Products Summary
Engineering reference data for MX7575SQ/883B — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | 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 |
Key Differentiators
- 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))
Design Notes
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.
Compliance Information
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.
