MX7575KP+T - 8-Bit 200kSPS SAR ADC w/ T/H | Maxim Integrated
MPN: MX7575KP+T ⚠ Last Time Buy| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $7.45 | $7.45 |
| 10 | $6.85 | $68.50 |
| 100 | $5.9 | $590.00 |
| 500 | $5.1 | $2,550.00 |
| 1,000 | $4.45 | $4,450.00 |
MX7575KP+T Overview
An 8-bit successive-approximation ADC (SAR ADC) is a type of data converter that uses a binary-search algorithm against an internal precision DAC to determine each code in N conversion clock cycles. SAR converters are valued for deterministic latency, single-shot accuracy, and low power consumption, and they sit within the broader hierarchy of analog-to-digital converter -> data converter -> signal chain IC -> mixed-signal semiconductor. The MX7575 family sits at the low-resolution, high-speed end of that hierarchy.
Key features include a 5 us conversion time (compatible with the slower 10 us MX7576), a track-and-hold capable of acquiring full-scale signals up to 50 kHz (386 mV/us slew rate), a microprocessor-compatible parallel interface, single +5 V supply operation from 4.75 V to 5.25 V, and commercial 0 C to +70 C temperature grade. Internal reference and clock options are integrated to minimise external parts count.
The MX7575 uses a standard CMOS SAR core with an input track-and-hold that allows full-scale dynamic signals to be converted without an external sample-and-hold. The 8-bit parallel output simplifies hookup to common 8-bit microcontrollers and DSPs of its era, and the part is offered in PLCC-20 and PDIP-20 packages. Power dissipation is modest at approximately 25 mW active, with an explicit power-down mode that drops quiescent draw for battery-instrument applications.
Typical applications include portable digital instrumentation, process-control front ends, embedded data-acquisition boards, multiplexed data-logging systems, and replacement of legacy 8-bit ADC slots in industrial controllers. The PLCC-20 footprint and parallel bus make it a drop-in candidate when modernising legacy designs that originally specified the Maxim MX7575 or pin-equivalent AD7575.
When designing with this part, place a 0.1 uF decoupling capacitor close to VDD, observe the 5 us acquisition-aperture timing relative to RD/CS, and ensure the analog input stays within 0 V to VREF to avoid code saturation. The PLCC-20 socket or footprint allows hand-rework-friendly prototyping, but production runs are typically tape-and-reel for surface-mount assembly.
This page synthesises distributor pricing, same-family Maxim drop-in alternatives, and practical design notes that complement the manufacturer datasheet. It is intended for engineers evaluating the MX7575KP+T for new designs, obsolescence re-sourcing, or as a pin-compatible swap where the AD7575 was originally specified.
Drop-in alternatives for MX7575KP+T — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
AD7575JPZ
✅ Drop-In📋 Reference alternative (not in catalog)
MX7576KP+T
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
MX7575KP-T
✅ Drop-In📋 Reference alternative (not in catalog)
MX7575KP+T Maximum Ratings & Electrical Characteristics
| Resolution | 8 bit |
| Conversion Rate | 200 kSPS (5 us conversion time) |
| Conversion Architecture | SAR (Successive Approximation) |
| Analog Input Range | 0 V to 2.46 V |
| Number of Channels | 1 |
| Data Interface | Parallel (8-bit uP-compatible) |
| Track-and-Hold | Yes (on-chip, full-scale up to 50 kHz, 386 mV/us slew) |
| Supply Voltage | 4.75 V to 5.25 V (single +5 V) |
| Power Dissipation | Approximately 25 mW active |
| Operating Temperature | 0 C to +70 C (commercial) |
| Package | PLCC-20 (LCC-20) |
| Pin Count | 20 |
| Mounting Type | Surface Mount (Tape & Reel) |
| Screening Level | Commercial |
| Terminal Form | J-Bend |
| Package Code | QCCJ (PLCC) |
MX7575KP+T Pin Configuration
| Pin 1 | DB3 — Data Bit 3 (parallel output) |
| Pin 2 | DB2 — Data Bit 2 (parallel output) |
| Pin 3 | DB1 — Data Bit 1 (parallel output) |
| Pin 4 | DB0 — Data Bit 0 (parallel output, LSB) |
| Pin 5 | DGND — Digital ground |
| Pin 6 | CS — Chip Select (active low) |
| Pin 7 | RD — Read (active low) |
| Pin 8 | BUSY — Busy / End-of-Conversion status |
| Pin 9 | CLKIN — External clock input (or use internal RC) |
| Pin 10 | VDD — +5 V supply |
| Pin 11 | AGND — Analog ground |
| Pin 12 | REF — Reference voltage input (typically +2.5 V) |
| Pin 13 | AIN — Analog input (0 V to VREF) |
| Pin 14 | NC — Not connected (per datasheet) |
| Pin 15 | DB7 — Data Bit 7 (parallel output, MSB) |
| Pin 16 | DB6 — Data Bit 6 (parallel output) |
| Pin 17 | DB5 — Data Bit 5 (parallel output) |
| Pin 18 | DB4 — Data Bit 4 (parallel output) |
| Pin 19 | NC — Not connected (per datasheet) |
| Pin 20 | VSS — Substrate / negative supply return |
Typical Applications
MX7575KP+T is suitable for 6 applications: Portable Digital Multimeters and Panel Meters, Process-Control Analog Input Modules, Embedded Data Acquisition Boards, Multiplexed Data-Logging Systems, Legacy Industrial Controller Replacement, Audio-Band Signal Digitisation for Consumer Electronics.
Portable Digital Multimeters and Panel Meters
The MX7575KP+T suits portable digital multimeters and panel meters where 8-bit resolution (0.4% of full scale) and 200 kSPS conversion speed are sufficient for display update rates and AC measurement bandwidth. Its single +5 V supply eliminates the need for a negative rail in handheld instruments, and the on-chip track-and-hold acquires 50 kHz full-scale signals so the meter can digitise rectified AC without an external sample-and-hold. The PLCC-20 footprint fits the compact mainboards typical of handheld meters, and 25 mW active dissipation preserves battery life. For designs migrating from the older MX7575 to the AD7575, the MX7575KP+T provides pin-compatible second-source continuity.
Recommended
Process-Control Analog Input Modules
The MX7575KP+T is well-suited to 4-20 mA process-control analog input modules and PLC analog front ends, where 8-bit resolution is adequate for valve position feedback, temperature trend channels, and other non-critical process variables. The 0 V to +2.46 V analog input range maps directly to common 1-5 V or 0-2.5 V transducer signals after resistor scaling, and the parallel microprocessor interface simplifies connection to legacy 8051/PIC microcontroller ports. Industrial designers benefit from the 0 C to +70 C commercial temperature grade and the wide 4.75 V to 5.25 V supply tolerance, which tolerates noisy 24 V-derived 5 V rails common in factory automation. For harsher environments, pair with external protection TVS diodes and isolation amplifiers.
Recommended
Embedded Data Acquisition Boards
Embedded data acquisition boards for machinery vibration, building automation, and laboratory instruments use the MX7575KP+T as a cost-effective, low-power 8-bit front end. The 200 kSPS throughput captures transient events without aliasing in audio-band and low-RF instrumentation, while the on-chip track-and-hold avoids the cost and aperture-time errors of an external SHA. The parallel data bus directly interfaces to legacy 8-bit microcontroller ports without glue logic, and the PLCC-20 socket allows hand-prototype rework in laboratory settings. Power dissipation of approximately 25 mW keeps total board thermal rise modest, even in densely packed rack-mount chassis. For higher-channel-count systems, multiplex several analog sources upstream and switch them into the single MX7575KP+T input.
Recommended
Multiplexed Data-Logging Systems
Multiplexed data-logging systems for environmental, energy, and remote-telemetry applications use the MX7575KP+T as the per-channel digitiser because 8-bit resolution is sufficient for trend logging while 200 kSPS speed allows sampling of rapidly changing sensor channels via an upstream analog mux. The single +5 V supply aligns with battery-powered solar or telco-backup power systems, and the 25 mW active dissipation extends unattended-deployment runtime. The PLCC-20 footprint's compatibility with industrial hand-soldering tools simplifies field service. Each channel's full-scale bandwidth of 50 kHz is sufficient for transducer-band signals (temperature, pressure, flow) without aliasing concern.
Recommended
Legacy Industrial Controller Replacement
The MX7575KP+T directly replaces end-of-life 8-bit ADC slots in legacy industrial controllers and motor-drive boards originally designed with the Maxim MX7575 or Analog Devices AD7575. Its PLCC-20 footprint is a 1:1 mechanical replacement, and the 5 us/200 kSPS conversion, 0 V to +2.46 V input, and 8-bit parallel interface are bit-for-bit compatible with the original Maxim datasheet. Plant engineers can perform direct PCB swaps without firmware changes, preserving decades of qualified control code. For long-term support, qualify the AD7575JPZ as a second source to bridge the gap to the next controller refresh cycle.
Recommended
Audio-Band Signal Digitisation for Consumer Electronics
Consumer audio-band signal-digitisation applications - such as simple voice recorders, toys, and entry-level effects processors - use the MX7575KP+T where 8-bit/200 kSPS performance covers the 20 Hz to 20 kHz audio band at low cost. The on-chip track-and-hold acquires fast audio transients without external SHA hardware, and the parallel interface simplifies connection to legacy 8-bit microcontrollers common in cost-sensitive consumer products. The single +5 V supply fits USB- or battery-powered consumer devices, while the PLCC-20 footprint is compatible with hand-rework-friendly manufacturing processes typical of low-volume consumer audio. For higher fidelity, step up to the MAX1274/MAX1276 family 12-bit SAR ADCs.
Recommended
Recommended Products Summary
Engineering reference data for MX7575KP+T — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | AD7575JPZ | MX7575KP-T | MX7575JP+ | MX7576KP+T |
|---|---|---|---|---|---|
| Brand | Analog Devices / Maxim Integrated | Analog Devices | Analog Devices / Maxim Integrated | Analog Devices / Maxim Integrated | Analog Devices / Maxim Integrated |
| Package | PLCC-20 (LCC-20) | PLCC-20 (LCC-20) - same | PLCC-20 (LCC-20) - same | PDIP-20 - different (TH) | PLCC-20 (LCC-20) - same |
| Resolution | 8 bit | 8 bit | 8 bit | 8 bit | 8 bit |
| Conversion Time | 5 us | 5 us | 5 us | 5 us | 10 us |
| Sample Rate | 200 kSPS | 200 kSPS | 200 kSPS | 200 kSPS | 100 kSPS |
| Analog Input Range | 0 V to 2.46 V | 0 V to 2.46 V | 0 V to 2.46 V | 0 V to 2.46 V | 0 V to 2.46 V |
| Supply Voltage | 4.75 V to 5.25 V | 4.75 V to 5.25 V | 4.75 V to 5.25 V | 4.75 V to 5.25 V | 4.75 V to 5.25 V |
| Operating Temperature | 0 C to +70 C | 0 C to +70 C | 0 C to +70 C | 0 C to +70 C | 0 C to +70 C |
| Track-and-Hold | Yes (on-chip) | Yes (on-chip) | Yes (on-chip) | Yes (on-chip) | Yes (on-chip) |
| Data Interface | Parallel 8-bit uP | Parallel 8-bit uP | Parallel 8-bit uP | Parallel 8-bit uP | Parallel 8-bit uP |
Key Differentiators
- Same-family Maxim part with on-chip track-and-hold at 200 kSPS (vs MX7576KP+T)
- Original ADI marking for long-term sourcing (vs AD7575JPZ)
- Surface-mount PLCC-20 for tape-and-reel assembly (vs MX7575JP+)
Design Notes
Estimated: at VDD = 5 V and active mode with continuous conversion, the MX7575KP+T draws approximately 5 mA, for about 25 mW dissipation. Place a 0.1 uF ceramic decoupling capacitor within 5 mm of the VDD pin (pin 10) and a 10 uF bulk tantalum or ceramic at the board entry point. Use a star-ground topology tying AGND (pin 11) and DGND (pin 5) together at the IC's exposed pad only - this avoids digital switching currents flowing through the analog ground return and degrading conversion noise floor.
Estimated: PLCC-20 castellated pad pitch is 1.27 mm (50 mil) with J-leads wrapping around the package edge. For surface-mount assembly, design the land pattern with 0.65 mm wide pads extending 0.5 mm beyond the package edge; allow 2 mm clearance under the package for the central thermal/ground pad if used. Route the parallel data bus DB0-DB7 with matched trace lengths and a ground guard trace on either side to prevent digital-to-analog crosstalk into the AIN/REF inputs. Avoid routing digital lines under the analog input traces.
The MX7575KP+T on-chip track-and-hold acquires full-scale signals up to 50 kHz (386 mV/us slew rate). Drive AIN through a low-impedance buffer (op-amp output impedance <100 ohm) to avoid sample-and-hold droop. Apply REF as a low-noise source - either the internal 2.46 V reference or an external MAX6150 2.500 V reference filtered with a 10 uF + 0.1 uF bypass pair. Keep the analog input trace short and surrounded by AGND copper to minimise noise injection.
Critical pitfalls: (1) Driving AIN beyond VDD + 0.3 V can latch up the input ESD structure - clamp with Schottky diodes to VDD/AGND in harsh environments. (2) CS must be asserted before RD; deassert CS after the read completes to avoid bus contention. (3) BUSY goes high at conversion start and falls at end-of-conversion; do not assert RD while BUSY is high, or the parallel bus reads invalid data. (4) The CLKIN pin accepts an external conversion clock; if left floating, the internal RC clock is used (verify against the datasheet for your specific lot).
Compliance Information
RoHS / REACH / lead-free status for MX7575KP+T not confirmed in the Verified Web Data snippets. The part is commercial-grade (0 C to +70 C), not AEC-Q100 qualified, and was originally released in the mid-1990s. Check the manufacturer datasheet or contact Analog Devices for the latest compliance documentation before new design-in.
