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Analog Devices Inc./Maxim Integrated MAX152EWP+
- Part No.:
- MAX152EWP+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX152EWP+.pdf
- Description:
- IC ADC 8BIT 1UA PWR-DWN 20-SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:4,339
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Product details
Overview
MAX152EWP+ from Maxim Integrated is an 8-bit, 400ksps analog-to-digital converter (ADC) using half-flash architecture for 1.8µs conversion time, operating from single +3.0V to +3.6V supply, with 1µA power-down current and internal track/hold - deployed in burst-mode data acquisition and portable telecom systems.
For engineers reviewing the MAX152EWP+ datasheet, MAX152EWP+ pinout, MAX152EWP+ application, or MAX152EWP+ equivalent, key selection considerations include its guaranteed -40°C to +85°C extended temperature range, ratiometric reference support, µP-compatible parallel interface with no external clock, and low-power operation critical for battery-powered signal chains.
Technical Context
The MAX152EWP+ implements a two-stage half-flash ADC architecture: first, a 4-bit flash section resolves the MSBs; then an internal 4-bit DAC generates a residue voltage, which a second 4-bit flash stage converts to the LSBs - achieving full 8-bit resolution with only 15 comparators. It requires no external clock and supports both RD (read-only) and WR-RD (write-read) digital interface modes via the MODE pin.
Its analog input accepts unipolar (0V to VREF+) or bipolar (VREF– to VREF+, e.g., –1.5V to +1.5V) ranges, enabled by independent VREF+ and VREF– inputs. Power-down is asserted by pulling PWRDN low, reducing supply current to 1µA typical while enabling wake-up and acquisition in under 900ns - essential for duty-cycled sensing applications.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 8-bit - delivers 256 discrete output codes for medium-speed precision digitization. |
| Conversion Time | 1.8µs (typical, RD mode at VDD = 3.3V) - enables 400ksps sustained throughput without pipeline latency. |
| Supply Voltage | +3.0V to +3.6V - compatible with modern low-voltage logic rails and battery-operated systems. |
| Power-Down Current | 1µA (typical) - reduces average system power in burst-mode acquisition by >99.9% vs. active mode. |
| Input Bandwidth | 300kHz full-power - supports digitization of baseband signals up to audio frequencies without external anti-alias filtering. |
| Operating Temperature | –40°C to +85°C - qualified for industrial and extended-environment embedded deployments. |
| Reference Interface | Ratiometric VREF+/VREF– inputs - eliminates gain error drift when reference and signal share same supply source. |
Pinout & Package
MAX152EWP+ is housed in a 20-pin wide SO (Small Outline) package, 7.62mm × 12.60mm body, 1.27mm pitch, RoHS-compliant, with exposed pad not connected internally.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VIN | Analog Input | Single-ended input node referenced to VREF– and VREF+; supports unipolar (0V–VREF+) or bipolar (VREF––VREF+) ranges. |
| 2–5, 14–17 D0–D7 | Parallel Data Output | Three-state, latched outputs (D0 LSB to D7 MSB); directly interface to µP data bus without glue logic. |
| 6 WR/RDY | Control I/O | In RD mode: open-collector ready status (RDY); in WR-RD mode: write strobe input (WR). |
| 7 MODE | Interface Mode Select | Low = RD mode (conversion triggered by RD); high = WR-RD mode (conversion triggered by WR). |
| 8 RD | Read Strobe | Active-low control enabling data read access; must be low to latch valid D0–D7 outputs. |
| 9 INT | Interrupt Output | Open-drain active-low signal indicating end of conversion; resets on rising edge of CS or RD. |
| 10 GND | Analog/Digital Ground | Common reference for analog inputs, digital I/O, and power supplies; requires low-impedance PCB connection. |
| 11 VREF– | Reference Lower Terminal | Sets zero-code voltage; can be grounded (unipolar) or negative (bipolar); current flows even in power-down. |
| 12 VREF+ | Reference Upper Terminal | Sets full-scale voltage; typically tied to VDD or external reference; internal 1kΩ path to VREF– draws current. |
| 13 CS | Chip Select | Active-low enable for WR/RD/INT functions; must be low for device to respond to control inputs. |
| 18 PWRDN | Power-Down Control | Active-low input disabling internal circuitry; reduces IDD to 1µA and enables sub-µs wake-up. |
| 19 VSS | Negative Supply | Required for bipolar operation (–3.0V to –3.6V); tied to GND for unipolar mode. |
| 20 VDD | Positive Supply | +3.0V to +3.6V main supply; powers analog core, digital interface, and internal track/hold amplifier. |
Key Features
| Feature | Design Value |
|---|---|
| No external clock required | Internal timing control eliminates need for external oscillator or clock distribution, simplifying BOM and layout. |
| 1.8µs conversion time | Enables deterministic 400ksps sampling in RD mode without pipeline delay or FIFO buffering. |
| 1µA power-down current | Reduces average power in intermittent-sampling systems (e.g., sensor nodes), extending battery life by orders of magnitude. |
| Internal track/hold | Removes requirement for external sample-and-hold circuitry, minimizing board area and signal-path distortion. |
| Ratiometric reference inputs | Compensates for supply rail variation when VREF+ and signal source share same regulator, improving system-level accuracy. |
| Unipolar/bipolar input support | Configurable input range via VREF+/VREF– pins allows reuse across AC-coupled (bipolar) and DC-coupled (unipolar) signal paths. |
Applications
| Cellular Baseband Monitoring | Portable Radio IF Sampling |
|---|---|
|
Use Scenario: Real-time monitoring of RF front-end AGC voltage and RSSI levels in GSM/EDGE handset transceivers during TDMA burst intervals. IC Role / Device Role / Timing Role: MAX152EWP+ digitizes analog control voltages with sub-microsecond latency, synchronized to TDMA frame timing via PWRDN-triggered wake-up. Use Value: 1µA power-down ensures negligible quiescent drain between bursts; 1.8µs conversion captures fast AGC transients without missing critical control points. |
Use Scenario: Digitizing intermediate frequency (IF) signals in handheld two-way radios operating in 450MHz band with narrowband FM demodulation. IC Role / Device Role / Timing Role: MAX152EWP+ serves as front-end ADC for IF chain, accepting bipolar ±1.5V inputs and delivering 8-bit samples to DSP core via parallel bus. Use Value: 300kHz full-power bandwidth preserves IF signal integrity; ratiometric reference rejects supply noise from shared LDO powering RF and digital sections. |
| Battery-Powered Data Logger | High-Speed Servo Feedback Loop |
|
Use Scenario: Environmental sensor node logging temperature, pressure, and humidity at 100Hz using coin-cell battery, waking only to acquire and transmit batches. IC Role / Device Role / Timing Role: MAX152EWP+ operates in burst mode: powered down between readings, awakened by microcontroller to digitize conditioned sensor outputs. Use Value: Sub-1µs wake-up + 1.8µs conversion enables <10µs total active time per sample, cutting average current to <100nA over 10s intervals. |
Use Scenario: Closed-loop position control in industrial servo drives where motor current and encoder phase signals require real-time digitization for PWM update at 20kHz. IC Role / Device Role / Timing Role: MAX152EWP+ digitizes analog current sense and resolver feedback signals in parallel, feeding FPGA-based motion controller with deterministic latency. Use Value: Guaranteed 400ksps throughput meets 20kHz loop timing with margin; internal track/hold eliminates aperture jitter in high-dV/dt current sensing. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 8-bit, high-speed ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7822U | SPI interface, 2.7V–5.25V supply, 1MSPS, 2.5µs conversion, no internal track/hold, 2.5mW active power | Requires serial interface logic and external S&H; better suited for space-constrained MCU designs with SPI peripherals | Select ADS7822U when board space is limited and µP has SPI but lacks parallel bus; avoid if deterministic low-latency parallel access is required. |
| MAX11200EEE+ | 24-bit delta-sigma ADC, 3.3V supply, 1ksps, 1.6µV RMS noise, internal PGA and reference, 350µA active current | Targets high-precision DC/low-frequency measurements (e.g., strain gauges), not high-speed burst acquisition | Select MAX11200EEE+ for ultra-low-noise static measurements; MAX152EWP+ remains optimal for >100ksps dynamic signal capture with minimal latency. |
Compared with ADS7822U, MAX152EWP+ provides faster parallel data access and lower wake-up latency but consumes more active power; versus MAX11200EEE+, it trades resolution and noise performance for raw speed and deterministic timing - making MAX152EWP+ uniquely suited for burst-mode, µP-tight-loop applications demanding sub-2µs conversion and µA-scale quiescence.
Availability
MAX152EWP+ is available at Aetrix Electronics and suitable for cellular telephony, portable radio design, and battery-powered data acquisition requiring stable component supply across industrial temperature grades.
Supply support for MAX152EWP+ includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.
Manufacturer
Maxim Integrated (now part of Analog Devices) is a semiconductor company specializing in high-performance analog, mixed-signal, and power management ICs for industrial, automotive, and communications markets.
The MAX152EWP+ belongs to Maxim's high-speed data converter product line, engineered for low-voltage, low-power, µP-compatible digitization in portable and burst-mode systems - emphasizing rapid wake-up, ratiometric accuracy, and minimal external component count.
FAQ
What is the guaranteed operating temperature range for the MAX152EWP+?
The MAX152EWP+ is specified for operation from –40°C to +85°C, qualifying it for extended industrial environments. This grade is explicitly denoted by the "E" suffix in the part number and confirmed in the Ordering Information table, distinguishing it from commercial-grade (C) and military-grade (M) variants. All electrical specifications in the datasheet apply across this full range unless otherwise noted.
Does the MAX152EWP+ require an external clock to operate?
No, the MAX152EWP+ does not require an external clock. Its half-flash architecture and internal timing circuitry enable autonomous conversion initiation and data latching using only the RD or WR control signals. This eliminates clock generation, routing, and synchronization overhead - a key advantage for µP-centric designs where clock resources are constrained or noisy.
How does the PWRDN pin function in the MAX152EWP+?
The PWRDN pin on the MAX152EWP+ is an active-low control that places the device into ultra-low-power shutdown, reducing supply current to 1µA typical. When pulled low, internal biasing and conversion circuitry are disabled; upon return to high, the MAX152EWP+ powers up and acquires the input signal in under 900ns - including track/hold settling - enabling efficient burst-mode operation without external reset sequencing.
Can the MAX152EWP+ accept bipolar input signals?
Yes, the MAX152EWP+ supports bipolar inputs by configuring VREF– to a negative voltage (e.g., –1.5V) and VREF+ to a positive voltage (e.g., +1.5V), with VSS set to –3.0V. The datasheet confirms bipolar testing under these conditions, and the input range becomes VREF– ≤ VIN ≤ VREF+, enabling digitization of AC-coupled or differential signals without level-shifting circuitry.
What package type is used for the MAX152EWP+?
The MAX152EWP+ uses a 20-pin wide SO (Small Outline) package, measuring 7.62mm × 12.60mm with 1.27mm lead pitch. This is confirmed in the Pin Configuration diagram, Package Information tables, and Ordering Information section, where "EWP" explicitly denotes the wide SO variant rated for –40°C to +85°C operation.
MAX152EWP+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Bulk
- Product Status:
- Obsolete
- Number of Bits:
- 8
- Sampling Rate (Per Second):
- 400k
- Number of Inputs:
- 1
- Input Type:
- Single Ended
- Data Interface:
- Parallel
- Configuration:
- S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- Flash
- Reference Type:
- External
- Voltage - Supply, Analog:
- ±3V ~ 3.6V
- Voltage - Supply, Digital:
- ±3V ~ 3.6V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 20-SOIC
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX152EWP+ FAQ
1.How can I place an order for MAX152EWP+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX152EWP+ on Aetrix. Our sales agent will provide a competitive quotation and guide you through the order confirmation once you accept the terms.
2.Are the price and stock information for MAX152EWP+ reliable?
The price and inventory of MAX152EWP+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX152EWP+ is usually 5 days.
3.What payment methods are accepted for MAX152EWP+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX152EWP+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX152EWP+?
MAX152EWP+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX152EWP+ order is processed, you will receive an email with the shipment details and tracking number.
Note: Tracking information may take up to 24 hours to appear. Express delivery typically takes 3–5 business days.
5.How can I obtain technical support or documentation for MAX152EWP+?
For technical support, including MAX152EWP+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX152EWP+ requirements.
6.How does Aetrix verify that MAX152EWP+ is sourced from the original manufacturer or authorized distributors?
All MAX152EWP+ products on Aetrix are procured from qualified distributors and authorized channels. Our dedicated quality assurance team conducts strict verification, including traceability checks and, if necessary, third-party testing. This ensures that MAX152EWP+ meets industry standards.
7.What is the process for return or replacement of MAX152EWP+?
All MAX152EWP+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX152EWP+, returns or replacements are accepted under the following conditions:
1.Quantity discrepancies, incorrect items, or visible external defects (such as breakage or corrosion), acknowledged by Aetrix.
2.The issue is reported within 90 days of delivery.
3.The MAX152EWP+ part is unused and in its original packaging.
Return procedure for MAX152EWP+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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