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Analog Devices Inc./Maxim Integrated MAX153EWP+
- Part No.:
- MAX153EWP+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 20-SOIC (0.295", 7.50mm Width)
- Datasheet:
-
MAX153EWP+.pdf
- Description:
- IC ADC 8BIT FLASH 20SOIC
- Quantity:
- Payment:
- Shipping:
Inventory:489
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Product details
Overview
MAX153EWP+ from Maxim Integrated is a high-speed, µP-compatible 8-bit analog-to-digital converter (ADC) using half-flash architecture to deliver 660ns conversion time and 1Msps throughput. It operates from single +5V or dual ±5V supplies, supports unipolar/bipolar inputs, and features a dedicated POWERDN pin enabling 1µA typical power-down current - ideal for burst-mode data acquisition in battery-powered systems.
For engineers reviewing the MAX153EWP+ datasheet, MAX153EWP+ pinout, MAX153EWP+ application, or MAX153EWP+ equivalent, key selection considerations include its µP-transparent interface (no external logic required), ratiometric reference capability, internal track/hold, 1MHz full-power bandwidth, and guaranteed 8-bit accuracy with ±1 LSB total unadjusted error across –40°C to +85°C.
Technical Context
The MAX153EWP+ implements a two-stage half-flash architecture: a 4-bit flash ADC generates the MSBs, then an internal 4-bit DAC produces a residue voltage that feeds a second 4-bit flash stage for the LSBs - achieving 8-bit resolution with only 15 comparators. Conversion is initiated by WR (write-read mode) or RD (read mode), with MODE pin selecting between these µP-synchronous protocols.
Its digital interface uses latched, three-state outputs (D0–D7) directly compatible with microprocessor data buses; WR/RDY serves as either write control or ready-status output depending on MODE state. Power-down activation requires PWRDN = low and CS = high, enabling sub-µA quiescent current while preserving fast 200ns wake-up and 160ns acquisition time.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 8-bit - delivers discrete digital representation of analog input with 256 distinct output codes. |
| Conversion Time | 660ns (WR-RD mode) - enables real-time sampling at up to 1.23MHz sustained rate in pipelined operation. |
| Total Unadjusted Error | ±1 LSB (unipolar range) - ensures monotonicity and no missing codes across full temperature range. |
| Power-Down Current | 1µA typical (VDD = +5V) - reduces system-level standby power in portable or intermittent-sampling applications. |
| Full-Power Bandwidth | 1MHz - supports accurate digitization of signals up to 1MHz without amplitude attenuation. |
| Supply Range | +5V single or ±5V dual - simplifies power design in mixed-signal systems requiring bipolar signal handling. |
| Operating Temperature | –40°C to +85°C - qualified for industrial and extended-temperature embedded environments. |
Pinout & Package
MAX153EWP+ is housed in a 20-pin Wide SO (SOIC-W) package, RoHS-compliant and lead-free, with standard 0.3-inch body width and 0.050-inch lead pitch.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VIN | Analog Input | Accepts unipolar (0V to VREF+) or bipolar (VREF– to VREF+) signals; input capacitance 22pF limits source impedance to ≤2.2kΩ for full-speed acquisition. |
| 2–5, 14–17 D0–D7 | Digital Output Bus | Latched, three-state outputs directly connectable to µP data bus; D0 = LSB, D7 = MSB; VOL ≤0.4V @ 1.6mA sink. |
| 6 WR/RDY | Mode-Dependent Control/Status | In RD mode: open-collector READY output; in WR-RD mode: WRITE strobe input - eliminates need for separate handshake logic. |
| 7 MODE | Interface Mode Select | Low = RD mode (conversion triggered by RD); high = WR-RD mode (conversion triggered by WR, data read via RD). |
| 8 RD | Read Strobe | Active-low signal enabling data access; in RD mode, initiates conversion and enables output buffers. |
| 9 INT | Interrupt Output | Open-drain active-low signal indicating conversion completion; resets on rising edge of CS or RD. |
| 10 GND | Analog Ground | Reference node for analog circuitry; must be separated from digital ground in mixed-signal PCB layout. |
| 11 VREF–, 12 VREF+ | Reference Span Inputs | Define zero-code (VREF–) and full-scale (VREF+) voltages; support ratiometric operation when referenced to same supply as sensor. |
| 13 CS | Chip Select | Active-low enable; must be high during power-down to prevent spurious conversions. |
| 18 PWRDN | Power-Down Control | CMOS/TTL-compatible input; low = 1µA shutdown; wake-up time <200ns; CS must remain high during shutdown. |
| 19 VSS | Negative Supply | 0V for unipolar operation; –5V ±5% for bipolar operation - enables true dual-supply signal conditioning. |
| 20 VDD | Positive Supply | +5V ±5%; bypassed with 4.7µF electrolytic + 0.1µF ceramic capacitor to ensure stable conversion performance. |
Key Features
| Feature | Design Value |
|---|---|
| Half-flash conversion architecture | Combines speed of flash ADC with reduced comparator count (15 vs. 255 for full 8-bit flash), lowering power and die area. |
| µP-transparent parallel interface | Appears as memory-mapped I/O port - no external glue logic required for 8051, x86, or ARM-based controllers. |
| Ratiometric reference support | VREF+/VREF– inputs allow direct connection to resistive sensors or supply-referenced transducers, eliminating ratio errors. |
| Internal track/hold | Integrated sampling circuit eliminates need for external THA; acquisition time fixed at 160ns minimum. |
| No external clock required | Timing fully controlled by WR/RD/CS edges - simplifies system clock tree and avoids jitter-sensitive external timing sources. |
Applications
| Battery-Powered Data Loggers | Cellular Baseband Signal Monitoring |
|---|---|
Use Scenario: Continuous monitoring of battery voltage, temperature, and RF front-end bias currents in handheld telecom equipment with strict power budgets. IC Role / Device Role / Timing Role: High-speed ADC capturing transient events during call setup and handover, synchronized to baseband processor via RD/WR strobes. Use Value: 1µA power-down current extends operational life between charges; 660ns conversion enables real-time response to fast-changing RF conditions. |
Use Scenario: Digitizing IF or baseband analog signals in cellular handset receivers for digital signal processing (DSP) algorithms. IC Role / Device Role / Timing Role: Front-end ADC feeding DSP engine; operates in WR-RD mode with pipelined WR/RD to sustain 1Msps throughput without µP wait states. Use Value: 1MHz full-power bandwidth preserves signal integrity of GSM/EDGE modulation waveforms; ±1 LSB TUE ensures accurate channel estimation. |
| Industrial Servo Loop Feedback | Portable Radio Audio Processing |
Use Scenario: Sampling motor current and position encoder signals in closed-loop motion control systems requiring deterministic latency. IC Role / Device Role / Timing Role: Real-time ADC in servo controller FPGA interface; uses RD mode with INT-driven interrupt to trigger PID computation. Use Value: 200ns wake-up from power-down allows synchronous sampling only during critical control windows, reducing thermal drift and average power. |
Use Scenario: Converting microphone preamp output or audio codec line-in signals in compact FM/AM portable radios. IC Role / Device Role / Timing Role: Low-power ADC interfacing to microcontroller ADC subsystem; configured for unipolar 0–5V input with internal VREF+ = 5V. Use Value: 40mW operating power and 5µW power-down mode minimize battery drain during silent intervals; SOIC-W package fits space-constrained PCB layouts. |
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, 2.7–5.25V supply, 1MSPS, but no power-down mode below 10µA; 8-pin SOIC. | Requires serial interface logic and external clock; unsuitable for µP bus-direct applications or ultra-low-power burst mode. | Select when board space is constrained and SPI is already used elsewhere in system; avoid when parallel µP interface or sub-5µA shutdown is mandatory. |
| MAX1112CPE+ | 8-bit, 250ksps, 2.7–5.25V, 1µA power-down, but slower conversion (4µs) and no internal track/hold. | Lower throughput limits use in high-speed servo or telecom monitoring; external THA adds cost and layout complexity. | Choose for cost-sensitive, lower-speed industrial sensing where 1µA shutdown suffices but 1Msps is unnecessary. |
Compared with ADS7822U and MAX1112CPE+, the MAX153EWP+ uniquely combines µP-bus compatibility, 660ns conversion, and 1µA power-down in a single device - making it optimal for space-constrained, battery-operated systems demanding both speed and ultra-low quiescent power without interface translation.
Availability
MAX153EWP+ is available at Aetrix Electronics and suitable for battery-powered systems, burst-mode data acquisition, and high-speed servo loops requiring stable component supply across industrial temperature ranges.
Supply support for MAX153EWP+ 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) designs precision analog, mixed-signal, and high-frequency ICs for industrial, communications, and consumer applications.
The MAX153EWP+ belongs to Maxim's high-speed data conversion product line, engineered specifically for µP-centric embedded systems needing fast, low-power, bus-compatible ADCs with minimal external components.
FAQ
What is the maximum sampling rate achievable with the MAX153EWP+ in WR-RD mode?
The MAX153EWP+ achieves up to 1.23MHz sustained sampling rate in WR-RD mode with tRD < tINTL configuration, calculated from tWR (250ns) + tRD (250ns) + tRI (150ns) + tP (165ns). This exceeds the nominal 1Msps rating and is validated under TA = +25°C with CL = 50pF load; actual rate may vary slightly with temperature and supply voltage.
Does the MAX153EWP+ require an external clock signal to operate?
No, the MAX153EWP+ does not require an external clock. All timing is derived from the µP's WR, RD, and CS control signals. The device uses internal timing circuitry synchronized to these edges, eliminating clock distribution complexity and jitter sensitivity - a key advantage over many competing ADCs.
How does the power-down feature of the MAX153EWP+ function, and what conditions must be met?
The MAX153EWP+ enters power-down when PWRDN is driven low and CS is held high. Under these conditions, VDD current drops to 1µA typical. If CS is low during PWRDN assertion, the device may attempt an incomplete conversion, increasing current. The MAX153EWP+ wakes up in under 200ns after PWRDN returns high, and is ready for new conversion within 360ns.
Can the MAX153EWP+ interface directly with a 3.3V microprocessor data bus?
Yes, the MAX153EWP+'s digital outputs are three-state and CMOS-compatible, with VOH ≥4V (at ISOURCE = 360µA) and VOL ≤0.4V (at ISINK = 1.6mA). When interfaced to a 3.3V µP, level-shifting is not required for logic recognition, though pull-up resistors may be needed if the µP lacks internal termination - confirmed by MAX153EWP+ input voltage thresholds (VINH = 2.4V, VINL = 0.8V).
What is the significance of ratiometric operation in the MAX153EWP+ reference inputs?
Ratiometric operation means the MAX153EWP+'s conversion result depends only on the ratio of VIN to (VREF+ – VREF–), not their absolute voltages. This allows direct connection of VREF+ and VREF– to the same supply rail powering a resistive sensor - canceling supply variations and improving measurement accuracy without precision voltage references.
MAX153EWP+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 20-SOIC (0.295", 7.50mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 8
- Sampling Rate (Per Second):
- 1M
- 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:
- ±5V, 5V
- Voltage - Supply, Digital:
- ±5V, 5V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 20-SOIC
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX153EWP+ FAQ
1.How can I place an order for MAX153EWP+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX153EWP+ 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 MAX153EWP+ reliable?
The price and inventory of MAX153EWP+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX153EWP+ is usually 5 days.
3.What payment methods are accepted for MAX153EWP+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX153EWP+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX153EWP+?
MAX153EWP+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX153EWP+ 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 MAX153EWP+?
For technical support, including MAX153EWP+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX153EWP+ requirements.
6.How does Aetrix verify that MAX153EWP+ is sourced from the original manufacturer or authorized distributors?
All MAX153EWP+ 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 MAX153EWP+ meets industry standards.
7.What is the process for return or replacement of MAX153EWP+?
All MAX153EWP+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX153EWP+, 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 MAX153EWP+ part is unused and in its original packaging.
Return procedure for MAX153EWP+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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