MAX153CWP+ - 8-Bit 1MSPS ADC with Power-Down | Analog Devices
MPN: MAX153CWP+ ✓ ActiveMAX153CWP+ Overview
An ADC is an analog-to-digital converter that transforms a continuously varying voltage into a numeric value for processing by a microprocessor, controller, or digital system. The MAX153 belongs to the flash-converter family of data-converter ICs and uses a half-flash architecture to balance rapid conversion speed with compact implementation. Its microprocessor-compatible interface makes it suitable for embedded measurement and control systems requiring a straightforward parallel data path.
Key features include a maximum conversion rate of 1 MSPS, 8-bit resolution, single-ended input capability, and a dedicated POWERDN control pin. The power-down function reduces supply current to 1 uA, allowing the converter to remain connected to a sensitive analog circuit without continuously consuming active-mode power. The device also supports both single +5 V and dual ±5 V supply arrangements, giving designers flexibility in industrial signal-chain designs.
Internally, the MAX153 uses a half-flash conversion technique rather than a conventional full-flash or successive-approximation architecture. A flash converter determines a digital result through parallel comparison stages, while the half-flash method reduces the number of conversion stages. This architecture supports the stated 660 ns conversion time and 1 MSPS throughput. The external reference arrangement gives the system designer control over the voltage range and accuracy used by the conversion process.
Typical applications include industrial process monitoring, digital voltmeters, sensor-interface systems, laboratory instrumentation, and embedded control panels. The converter is especially appropriate when an 8-bit measurement is sufficient, the acquisition must complete in approximately one microsecond, and the host processor can accept a parallel microprocessor-style interface. It is also useful in portable equipment that benefits from the 1 uA power-down state.
When laying out the circuit, treat the analog input, reference, and power connections as sensitive signal paths. Keep the input trace short, place bypass capacitors close to the supply pins, and avoid routing digital output traces directly beneath the analog input. Confirm the selected reference voltage and supply arrangement against the input range before applying analog signals.
This page organizes the key MAX153CWP+ specifications, practical application guidance, lifecycle information, and design considerations into an engineering-focused reference. It also separates confirmed technical facts from details that require confirmation before schematic release or component sourcing.
Drop-in alternatives for MAX153CWP+ — same package, pin-to-pin compatible. Different-package parts requiring PCB rework are excluded.
No drop-in alternatives available for this product.
Request AlternativesMAX153CWP+ Maximum Ratings & Electrical Characteristics
| Converter Type | Half-flash analog-to-digital converter |
| Resolution | 8 bits |
| Sampling Rate | 1 MSPS |
| Conversion Time | 660 ns |
| Input Channels | 1 channel |
| Input Type | Unipolar or bipolar |
| Supply Configuration | Single +5 V or dual ±5 V |
| Power-Down Supply Current | 1 uA |
| Microprocessor Compatibility | Microprocessor-compatible parallel interface |
| Reference Type | External reference |
| Package | 20-pin SOIC |
| Pin Count | 20 pins |
| Mounting Type | Surface mount |
| Production Status | Production |
MAX153CWP+ 20-pin soic Pin Configuration Guide
Pin configuration for MAX153CWP+ (20-pin soic package). This analog component features input, output, and power supply pins. Refer to the manufacturer datasheet for offset null, compensation, and enable pin configurations. Ideal for signal conditioning and amplifier circuits.
No detailed pinout data available for MAX153CWP+.
Refer to the datasheet for full pin configuration.
Typical Applications
MAX153CWP+ is suitable for 6 applications: Industrial Process Monitoring, Digital Voltmeter and Panel Meter, Laboratory Signal Acquisition, Portable Battery-Powered Instrument, Embedded Control System, Sensor Signal Conditioning Interface.
Industrial Process Monitoring
The MAX153CWP+ suits process-monitoring systems in which a conditioned analog signal must be sampled rapidly by a digital controller. Its 8-bit resolution and 1 MSPS conversion rate provide one complete result in approximately 660 ns, allowing the host processor to acquire successive readings without using a slow successive-approximation converter. A single +5 V supply can simplify the converter supply arrangement, while dual ±5 V supports bipolar instrumentation when required. Use the external reference for a controlled, shared sensing system and verify the operating-temperature and accuracy limits before production release.
Recommended
Digital Voltmeter and Panel Meter
The MAX153CWP+ is appropriate for a digital voltmeter or panel meter that converts a conditioned input voltage into an 8-bit measurement. Its 660 ns conversion time supports fast updates, while the microprocessor-compatible interface allows a host to read and process the result without demanding a high-resolution converter. An external reference can provide predictable measurement scaling, and the POWERDN input can reduce consumption during idle intervals. The final accuracy budget should account for reference tolerance, input-network error, quantization, and any required calibration.
Recommended
Laboratory Signal Acquisition
The MAX153CWP+ can serve as the acquisition element in compact laboratory instruments that need frequent, simple 8-bit measurements. Its 1 MSPS throughput permits rapid acquisition of changing waveforms or calibration points, and the single-ended input works with common op-amp conditioning circuits. The converter's external reference allows the instrument designer to define the measurement range independently, but reference noise and drift must remain below the system's error budget. Use careful grounding and short analog traces to prevent digital switching activity from appearing at the sampled input.
Recommended
Portable Battery-Powered Instrument
The MAX153CWP+ fits portable instruments where intermittent measurements are more common than continuous high-rate acquisition. Its POWERDN control reduces supply current to 1 uA, allowing the analog converter to remain attached to a sensitive sensor circuit while the rest of the system is inactive. When measurement begins, the 660 ns conversion capability supports rapid readings, and the 8-bit result is suitable for coarse position, level, or threshold monitoring. Firmware should explicitly enable the converter, wait for valid data, and disable it after acquisition to realize the intended power-saving behavior.
Recommended
Embedded Control System
The MAX153CWP+ is useful in embedded control systems that require a fast sampling command interface and microprocessor-compatible data access. The converter can represent an analog control or sensor value with 8-bit resolution and deliver a result in 660 ns, allowing the controller to respond within a defined acquisition cycle. Its 20-pin SOIC package supports conventional surface-mount assembly and copper routing, although the analog section still requires isolation from digital output activity. The host must manage chip selection, data read timing, reference enablement, and power state consistently.
Recommended
Sensor Signal Conditioning Interface
The MAX153CWP+ can digitize the output of a conditioned sensor in applications where 8-bit resolution is adequate for thresholding, trend measurement, or basic closed-loop control. The single analog input can be driven by an amplifier or filter, while the external reference establishes the conversion scale. Because the converter uses a half-flash architecture and samples at 1 MSPS, the input source must provide adequate settling behavior during each acquisition. Include the converter's input capacitance and acquisition requirements when designing the source impedance and output drive strength.
Recommended
Recommended Products Summary
Engineering reference data for MAX153CWP+ — comparison, design guidance, and compliance information.
Selection Guide
Comparison with Alternatives
| Parameter | This Product |
|---|---|
| Package | 20-pin SOIC |
| Brand | Analog Devices |
| Resolution | 8 bits |
| Sampling Rate | 1 MSPS |
| Conversion Time | 660 ns |
| Input Channels | 1 channel |
| Input Type | Unipolar or bipolar |
| Supply Configuration | Single +5 V or dual ±5 V |
| Power-Down Supply Current | 1 uA |
| Reference Type | External reference |
Key Differentiators
- Provides 1 MSPS throughput with an 8-bit result (vs TLC0820AIDW)
- Supports both unipolar and bipolar input arrangements (vs MAX153EAP)
- Adds a defined 1 uA power-down state (vs MAX153EWP+)
Design Notes
Route the analog input, reference, and ground-return paths as a compact analog subsystem. Keep the input trace short, avoid digital output traces beneath the input or reference nodes, and place any input filtering capacitor close to the converter pin. The MAX153's 1 MSPS throughput can capture high-frequency disturbance and reference variation, so maintaining a small analog loop area is as important as meeting the nominal sample rate.
Follow the manufacturer application circuit for bypass-capacitor values and placement, placing decoupling directly at the relevant supply pins. The MAX153CWP+ supports single +5 V and dual ±5 V arrangements, so do not combine pin connections from both topologies. Confirm power-up order, reference startup, and the state of digital control pins before enabling acquisition. The 1 uA power-down specification applies to the stated shutdown condition and should not be treated as the active-mode supply current.
Do not assume that every 20-pin member of the MAX153 family is mechanically interchangeable. MAX153CWP+ is specified in SOIC, while related family listings can use SSOP or WSOIC constructions with different lead geometry. Before substituting any part, compare the manufacturer package drawing, pin table, reference voltage, supply arrangement, input range, acquisition timing, and absolute maximum ratings. A family-level match alone is not proof of drop-in compatibility.
Compliance Information
No confirmed environmental or automotive compliance classification is stated on the manufacturer product page shown. Confirm the current material declaration and qualification status with Analog Devices before production release.