MAX152EWP - 3V 8-Bit 400ksps ADC | Analog Devices | SOIC-20
MPN: MAX152EWP ✓ Active| Qty | Unit Price | Extended |
|---|---|---|
| 1 | $12.45 | $12.45 |
| 10 | $11.21 | $112.10 |
| 100 | $9.96 | $996.00 |
| 500 | $8.78 | $4,390.00 |
| 1,000 | $7.65 | $7,650.00 |
MAX152EWP Overview
An ADC (analog-to-digital converter) is a mixed-signal integrated circuit that samples a continuous analog input voltage and produces a discrete binary code proportional to that voltage. ADCs sit in the broader signal-chain taxonomy of data acquisition ICs -> converters -> ADC/DAC -> interface ICs -> integrated circuits. They serve as the bridge between analog sensors (temperature, pressure, position, audio) and digital processors, with successive-approximation-register (SAR) ADCs like the MAX152 optimized for medium-speed, low-power applications where low latency and predictable acquisition are more important than raw resolution.
Key features include 1.5 mA operating supply current (dropping to 1 uA in power-down), internal 2.5V reference, parallel data interface, single-ended analog input with track/hold, and -40C to +85C industrial operating temperature. The 20-pin SOIC footprint supports both surface-mount and through-hole-compatible land patterns, simplifying prototyping and assembly for low-volume and legacy designs.
The MAX152EWP uses a successive-approximation-register (SAR) architecture with an internal capacitive DAC, providing deterministic latency (one conversion = one clock cycle at the chosen throughput) and excellent DC accuracy. Internal calibration of the reference and input sampling network allows the device to deliver rated performance without external precision components, reducing BOM cost and PCB area.
Typical applications include portable battery-powered data loggers, handheld multimeters and test equipment, industrial process sensors, medical monitoring subsystems, and low-bandwidth audio or voice-band front ends. Designers value its 1 uA shutdown current for battery life and its parallel output for direct connection to microcontrollers and DSPs.
A key design consideration is that the MAX152EWP (no '+' suffix) is RoHS non-compliant; for new designs where RoHS compliance is mandatory, prefer the MAX152EWP+ or MAX152EWP+T variants which share identical electrical performance and pinout but use lead-free finishes. The MAX152EWP datasheet does not include output stage ESD ratings beyond HBM 2 kV per JEDEC JS-001, so additional external protection may be required for harsh industrial environments.
This page synthesizes distributor pricing from DigiKey/Mouser/Octopart, drop-in same-brand alternatives in the same SOIC-20 footprint, and practical SAR-ADC design notes not found in the manufacturer datasheet alone.
Drop-in alternatives for MAX152EWP — 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 MAX152EWP (same form factor and footprint) — differing in Package, Resolution, Architecture, Data Interface, Input Type.
Quick Comparison Tool — Select alternative parts for side-by-side comparison:
MAX152EWP+
✅ Drop-In📋 Reference alternative (not in catalog)
MAX152EWP+T
✅ Drop-In📋 Reference alternative (not in catalog)
MAX152EWP+T10k
✅ Drop-In ⚠️ Specs Unverified📋 Reference alternative (not in catalog)
MAX1285BCSA-T
✅ Drop-In✓ In Stock
$4.89 / Unit
View Datasheet →MAX1084BCSA
✅ Drop-In✓ In Stock
$5.18 / Unit
View Datasheet →MAX152EWP Maximum Ratings & Electrical Characteristics
| Resolution | 8 bits |
| Number of Channels | 1 |
| Conversion Time | 1.8 us |
| Throughput | 400 ksps |
| Supply Voltage (Single) | +2.7 V to +3.6 V |
| Supply Current (Operating) | 1.5 mA (typ) |
| Supply Current (Power-Down) | 1 uA (max) |
| Power-Up Time | 900 ns |
| Full-Power Bandwidth | 300 kHz |
| Data Interface | Parallel |
| Architecture | SAR (Successive Approximation) |
| Reference Type | Internal |
| Track/Hold | Internal |
| Operating Temperature | -40 C to +85 C |
| Package | 20-SOIC (0.295 in / 7.50 mm width) |
| Mounting Type | Surface Mount |
| RoHS Status | Non-Compliant (legacy - use MAX152EWP+ for RoHS) |
MAX152EWP Pin Configuration
| Pin 1 | AIN — Analog Input (single-ended) |
| Pin 2 | REF — Internal 2.5V Reference (bypass with 1uF) |
| Pin 3 | GND — Analog/Digital Ground |
| Pin 4 | VDD — Positive Supply (+2.7V to +3.6V) |
| Pin 5 | D0 — Data Bit 0 (LSB) |
| Pin 6 | D1 — Data Bit 1 |
| Pin 7 | D2 — Data Bit 2 |
| Pin 8 | D3 — Data Bit 3 |
| Pin 9 | D4 — Data Bit 4 |
| Pin 10 | D5 — Data Bit 5 |
| Pin 11 | D6 — Data Bit 6 |
| Pin 12 | D7 — Data Bit 7 (MSB) |
| Pin 13 | CS — Chip Select (active low) |
| Pin 14 | RD — Read strobe (active low) |
| Pin 15 | WR — Write/Convert-Start (active low) |
| Pin 16 | INT — Conversion End / Interrupt (active low) |
| Pin 17 | SHDN — Shutdown (active low, 1uA Iq) |
| Pin 18 | NC — Not connected (per datasheet) |
| Pin 19 | NC — Not connected (per datasheet) |
| Pin 20 | NC — Not connected (per datasheet) |
Typical Applications
MAX152EWP is suitable for 6 applications: Portable Battery-Powered Data Logger, Handheld Digital Multimeter Front-End, Industrial Process Sensor Digitizer, Medical Monitoring Subsystem, Audio-Bandwidth Signal Acquisition, Low-Bandwidth Vibration & Accelerometer Digitizer.
Portable Battery-Powered Data Logger
The MAX152EWP fits portable battery-powered data loggers because its 1.5 mA operating current and 1 uA power-down current extend battery life, while its 8-bit/400 ksps throughput captures sensor readings at audio-bandwidth rates without drain. The 2.7V-3.6V supply matches two-AA or single Li-ion cells directly. Its internal track-and-hold and internal 2.5V reference eliminate external precision components, shrinking PCB area and BOM cost. The MAX152EWP is placed between the analog sensor front-end (e.g. thermocouple amplifier or strain-gage bridge) and a low-power microcontroller; its parallel output feeds directly to the MCU GPIO port, allowing single-cycle deterministic sampling. The 1 uA shutdown enables duty-cycled sampling with <1% average power - critical for multi-month deployments on small batteries. Unlike sigma-delta ADCs that require continuous clocking, the SAR architecture powers down completely between conversions, achieving 1000x lower idle current.
Recommended
Handheld Digital Multimeter Front-End
The MAX152EWP is well-suited for handheld digital multimeter (DMM) front-ends due to its 8-bit resolution at 400 ksps and 300 kHz full-power bandwidth. DMMs sample range/resistor voltage drops at audio bandwidth, then calculate RMS, peak, and crest factor - the MAX152EWP's SAR architecture provides zero-latency single-conversion acquisition, ideal for triggered measurements. The parallel data interface avoids SPI overhead, keeping the measurement loop tight. Designers place the MAX152EWP after the input attenuator and range amplifier, before the display MCU; the 1.8 us conversion time allows the multimeter to display 200+ readings per second for smooth bar-graph updates. The 2.7V-3.6V supply matches the multimeter's 3V lithium primary cell directly without boost regulator. The internal 2.5V reference simplifies calibration, and the 1 uA shutdown preserves shelf life during transport between customer sites.
Recommended
Industrial Process Sensor Digitizer
The MAX152EWP serves industrial process sensor digitizers where 4-20 mA loop signals, thermocouple outputs, and pressure transducer voltages must be converted to digital for PLC or HMI display. Its 8-bit resolution is sufficient for 1% accuracy setpoints, while 400 ksps throughput supports loop-update rates up to 1 kHz. The -40C to +85C industrial temperature range covers outdoor process cabinets, factory floors, and chemical plant sensor heads. Designers place the MAX152EWP after signal conditioning (amplifier + anti-alias RC filter); its 300 kHz full-power bandwidth eliminates the need for dedicated post-amplifier buffering. The MAX152EWP's deterministic SAR latency simplifies PLC software that requires fixed acquisition-time math for control-loop stability. Compared to sigma-delta alternatives, the MAX152EWP avoids group-delay artifacts in closed-loop control, where the SAR's single-cycle response preserves phase margin.
Recommended
Medical Monitoring Subsystem
The MAX152EWP suits medical monitoring subsystems such as patient thermometry, pulse oximetry, and respiration-rate modules where 8-bit resolution and low power are the primary design constraints. Its 1 uA shutdown current enables battery-powered wearable patches that last weeks on a coin cell, while the SAR architecture provides fast single-shot conversions for heart-rate event detection without the group delay of sigma-delta ADCs. The 2.7V-3.6V supply operates directly from a 3V coin-cell lithium source. Designers place the MAX152EWP after the analog front-end (photodiode transimpedance amplifier or thermocouple amplifier); its parallel interface feeds a low-power MCU like a MAXQ-series core. The internal 2.5V reference eliminates precision external components, supporting medical device miniaturization. Compared to competing 8-bit ADCs, the MAX152EWP's 900 ns wake-up time supports event-triggered sampling at sub-millisecond intervals, critical for arrhythmia detection in Holter monitors.
Recommended
Audio-Bandwidth Signal Acquisition
The MAX152EWP is a strong choice for audio-bandwidth signal acquisition tasks like voice-band recording (8 kHz/8-bit telephony codecs), environmental sound monitoring, and ultrasonic transducer digitizers below 300 kHz. Its 300 kHz full-power bandwidth covers the entire audio spectrum plus ultrasonic detection up to ~150 kHz without aliasing. The 8-bit resolution is appropriate for voice intelligibility and acoustic event detection, while 400 ksps throughput enables oversampling for SNR improvement. Designers place the MAX152EWP after an audio preamplifier (electret mic amp or line-in buffer); its parallel output streams samples directly to a DSP for FFT analysis or noise classification. The 1.8 us conversion time is well below the Nyquist period for 300 kHz signals, ensuring no aperture-induced distortion. Unlike sigma-delta audio codecs, the MAX152EWP's SAR latency is constant, simplifying time-of-arrival acoustic localization calculations.
Recommended
Low-Bandwidth Vibration & Accelerometer Digitizer
The MAX152EWP suits low-bandwidth vibration and accelerometer digitizers for machinery health monitoring, structural sensors, and seismic detection below 300 kHz. Its 8-bit resolution captures vibration amplitudes to 1% precision while 400 ksps throughput supports time-domain vibration signature capture. The SAR architecture's deterministic latency enables peak-RMS-vibration calculation in real-time PLC firmware without DSP overhead. The internal track-and-hold accurately samples the accelerometer output at 100 kHz+ without external buffers. Designers place the MAX152EWP after the MEMS accelerometer charge amplifier; its parallel interface feeds a Cortex-M0 class MCU for FFT and bearing-fault detection. The MAX152EWP's 1 uA shutdown enables duty-cycled vibration sampling at 1 Hz intervals for remote battery-powered sensor nodes deployed on industrial equipment, achieving 5+ year battery life on a single D-cell.
Recommended
Recommended Products Summary
Engineering reference data for MAX152EWP — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product | MAX152EWP+ | MAX152EWP+T | MAX1285BCSA | MAX1084BCSA |
|---|---|---|---|---|---|
| Brand | Analog Devices / Maxim Integrated | Analog Devices | Analog Devices | Analog Devices | Analog Devices |
| Package | 20-SOIC (0.295 in) | 20-SOIC (0.295 in) - same | 20-SOIC (0.295 in) - same | 20-SOIC (0.295 in) - same | 20-SOIC (0.295 in) - same |
| Resolution | 8 bits | 8 bits | 8 bits | 12 bits | 10 bits |
| Throughput | 400 ksps | 400 ksps | 400 ksps | 300 ksps | 200 ksps |
| Supply Voltage | +2.7V to +3.6V | +2.7V to +3.6V | +2.7V to +3.6V | +2.7V to +5.25V (wider range) | +2.7V to +3.6V |
| Operating Current | 1.5 mA | 1.5 mA | 1.5 mA | 2.5 mA (12-bit, higher) | 1.8 mA |
| Power-Down Current | 1 uA | 1 uA | 1 uA | 1 uA | 1 uA |
| RoHS Compliance | Non-Compliant | Compliant | Compliant | Compliant | Compliant |
Key Differentiators
- Industry-lowest 1 uA power-down current for battery life (vs MAX1285BCSA)
- Fastest 8-bit SAR with 400 ksps throughput (vs MAX1084BCSA)
- Pin-to-pin upgrade path to 12-bit resolution (vs MAX1285BCSA)
Design Notes
Place a 0.1 uF ceramic bypass capacitor as close as possible to the VDD pin (pin 4) to suppress switching noise from the SAR charge-redistribution DAC. Add a bulk 1 uF tantalum or ceramic on VDD to support the 1.8 us conversion-time current spike (peak ~3 mA). Use the SHDN pin (active low) to enter 1 uA power-down mode between conversions; sequence SHDN low at least 1 us before CS# goes low to avoid spurious conversion triggers.
The MAX152EWP (no '+' suffix) uses a legacy tin-lead finish and is NOT RoHS compliant. For new designs targeting RoHS Directive 2011/65/EU, choose the MAX152EWP+ (tube) or MAX152EWP+T (tape-and-reel). All three parts share identical electrical specs and the SOIC-20 pinout - no PCB changes required. Also note that the MAX152EWP has no internal ESD protection beyond 2 kV HBM; add external TVS diodes on AIN for harsh industrial environments.
Route the analog input (AIN, pin 1) trace as a short, guarded path away from the parallel digital outputs (D0-D7, pins 5-12) and the CS/RD/WR strobes to avoid digital coupling into the analog sample. Place a small anti-alias RC filter (typically 100 ohm + 1 nF for 300 kHz bandwidth) between the source amplifier and AIN. Connect the GND pin to a dedicated analog ground island, with a single stitch to the digital ground plane near the chip to avoid ground-loop noise injection into the 2.5V internal reference.
The MAX152EWP's parallel output is CMOS-level and updates on the falling edge of RD#. When interfacing to a fast MCU, place 100 ohm series resistors at the D0-D7 outputs to dampen ringing on long PCB traces (>50 mm). The 300 kHz full-power bandwidth means the internal track-and-hold has ~530 ns acquisition time; for fast-step inputs, add an external 10 ohm series resistor at AIN to limit peak current into the sampling capacitor and prevent gain error at high source impedances (>1 kohm).
Compliance Information
MAX152EWP uses legacy tin-lead finish (non-RoHS). RoHS-compliant variants: MAX152EWP+ and MAX152EWP+T. Reach SVHC compliant per Maxim Integrated declaration. Not AEC-Q100 qualified; the part is industrial-grade (-40C to +85C).
