My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX153EAP+
- Part No.:
- MAX153EAP+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 20-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
MAX153EAP+.pdf
- Description:
- IC ADC 8BIT FLASH 20SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,798
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX153EAP+ from Maxim Integrated is a high-speed, µP-compatible 8-bit analog-to-digital converter (ADC) using half-flash architecture to achieve 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 MAX153EAP+ datasheet, MAX153EAP+ pinout, MAX153EAP+ application, or MAX153EAP+ equivalent, key selection considerations include its 1µA power-down capability, 200ns wake-up time, ratiometric reference support, internal track/hold, and compatibility with microprocessor data buses without external interface logic.
Technical Context
The MAX153EAP+ implements a two-stage half-flash architecture: first, a 4-bit flash ADC digitizes the upper 4 bits; then an internal 4-bit DAC generates a residue voltage, which a second 4-bit flash ADC converts to yield the full 8-bit result. This architecture enables deterministic 660ns conversion in WR-RD mode while maintaining monotonicity and no missing codes.
Its digital interface supports three operational modes - RD mode (MODE = GND), WR-RD mode (MODE = VDD), and pipelined mode (WR tied to RD) - each with distinct timing constraints, interrupt behavior, and data-access protocols. The device requires no external clock and uses latched, three-state outputs directly compatible with 5V µP data buses.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 8-bit - delivers 256 discrete output codes for precise digitization of analog sensor or signal chain outputs. |
| Conversion Time | 660ns (WR-RD mode) - enables real-time sampling of fast transients in servo loops or telecom front-ends. |
| Sampling Rate | 1Msps - supports Nyquist-limited bandwidth up to 500kHz for baseband signal capture. |
| Power-Down Current | 1µA typical (at +5V) - reduces system quiescent power by >99% during idle intervals in portable radios or cellular handsets. |
| Full-Power Bandwidth | 1MHz - ensures accurate digitization of input signals up to 1MHz without amplitude roll-off. |
| Input Voltage Range | Unipolar: 0V to VREF+; Bipolar: ±2.5V - accommodates both ground-referenced and AC-coupled sensor interfaces. |
| Supply Voltage | +5V single or ±5V dual - simplifies power design in mixed-signal systems using standard LDOs or charge pumps. |
Pinout & Package
The MAX153EAP+ is housed in a 20-pin SSOP (Shrink Small Outline Package) with 0.65mm pitch, RoHS-compliant and lead-free (+ suffix). Its compact 7.2mm × 5.3mm footprint supports high-density PCB layouts in space-constrained portable equipment.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Analog input node | Accepts differential or single-ended signals referenced between VREF− and VREF+; 22pF input capacitance requires ≤2.2kΩ source impedance for full accuracy. |
| D0–D7 (Pins 2–5, 14–17) | Three-state parallel data outputs | Latched, bus-compatible outputs drive µP data bus directly; high-impedance state allows shared bus operation. |
| WR/RDY (Pin 6) | Mode-shared control/status | In RD mode: open-collector READY output; in WR-RD mode: WRITE strobe input - eliminates need for separate control lines. |
| MODE (Pin 7) | Interface configuration select | Pulled low internally (50µA); logic-low selects RD mode (simpler µP wait-state interface), logic-high enables WR-RD mode (faster pipelining). |
| RD (Pin 8) | Read strobe input | Triggers data latch enable in RD mode; used with WR in WR-RD mode to gate lower 4-bit result access. |
| INT (Pin 9) | Conversion completion flag | Active-low interrupt signals end-of-conversion; resets on rising edge of CS or RD - synchronizes µP read timing. |
| GND (Pin 10) | Analog ground reference | Separate AGND connection minimizes noise coupling into sensitive analog front-end; must be star-connected to system ground. |
| VREF− (Pin 11) | Reference lower bound | Sets zero-code point; accepts voltages from VSS to VREF+; internal 1–4kΩ resistance affects reference current draw. |
| VREF+ (Pin 12) | Reference upper bound | Sets full-scale code; accepts voltages from VREF− to VDD; enables ratiometric operation when tied to sensor supply. |
| CS (Pin 13) | Chip select enable | Must be low to activate WR/RD inputs; must be high during power-down to prevent spurious conversions. |
| PWRDN (Pin 18) | Power-down control | CMOS/TTL-compatible active-low input; asserts 1µA shutdown current only when CS is high - critical for reliable low-power sequencing. |
| VSS (Pin 19) | Negative supply rail | 0V for unipolar operation; −5V ±5% for bipolar mode - defines input common-mode range and reference offset. |
| VDD (Pin 20) | Positive supply rail | +5V ±5%; bypassed with 4.7µF + 0.1µF capacitors close to pin to suppress switching noise affecting conversion accuracy. |
Key Features
| Feature | Design Value |
|---|---|
| Half-flash conversion architecture | Enables 660ns conversion with 8-bit resolution and guaranteed no missing codes - avoids pipeline latency and aperture jitter issues of SAR or sigma-delta ADCs. |
| Ratiometric reference support | VREF+ and VREF− inputs allow direct connection to sensor excitation supply, eliminating gain drift errors in load-cell or RTD measurement systems. |
| Internal track/hold circuitry | Integrated T/H eliminates external components and layout sensitivity; 160ns acquisition time ensures accurate sampling of fast-changing inputs. |
| µP-compatible parallel interface | No glue logic required - functions as memory-mapped I/O or port-mapped peripheral; three-state outputs prevent bus contention in multi-peripheral systems. |
| 1µA power-down mode | Reduces average supply current by orders of magnitude in burst-mode applications like cellular TDMA slots or intermittent sensor polling. |
Applications
| Cellular Telephones | Portable Radios |
|---|---|
Use Scenario: Digitizing RF power detector output and audio codec signals during TDMA transmit/receive time slots. IC Role / Device Role / Timing Role: High-speed ADC capturing burst-mode analog signals with sub-microsecond latency and minimal power overhead between slots. Use Value: 1µA power-down current and 200ns wake-up enable >95% duty-cycle reduction in baseband power consumption without sacrificing real-time responsiveness. | Use Scenario: Sampling IF stage signals and battery voltage monitoring in handheld two-way radios operating on alkaline or Li-ion cells. IC Role / Device Role / Timing Role: Low-quiescent-current ADC interfacing directly to 8-bit µC data bus for real-time signal strength and supply health diagnostics. Use Value: Single +5V operation and ratiometric reference support eliminate need for precision voltage references, reducing BOM cost and board area. |
| Battery-Powered Systems | Burst-Mode Data Acquisition |
Use Scenario: Monitoring temperature, pressure, and acceleration in wireless sensor nodes powered by coin-cell batteries. IC Role / Device Role / Timing Role: Ultra-low-power ADC performing periodic measurements with microsecond-level active time per sample. Use Value: 1µA shutdown current extends battery life to multi-year operation; internal track/hold removes need for external sample-hold IC and associated power. | Use Scenario: Capturing transient waveforms from vibration sensors or fault-current detectors in industrial condition-monitoring equipment. IC Role / Device Role / Timing Role: High-throughput ADC triggered externally to acquire short-duration events at precisely timed intervals. Use Value: 660ns conversion time and pipelined WR=RD mode enable continuous streaming at 1Msps with zero dead time between samples. |
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 | 10-bit resolution, SPI interface, 2.7–5.25V supply, 1.25µs conversion time | Requires serial interface logic and external clock; higher resolution but slower speed and no power-down mode below 10µA | Select when higher resolution outweighs speed and power requirements; not drop-in due to serial interface and different timing model. |
| MAX115CPE+ | 8-bit, 1.25Msps, parallel interface, 2.5µA power-down, ±5V supply only | Higher max sampling rate but lacks unipolar operation and ratiometric reference flexibility; same package but different pinout | Choose for marginally faster throughput where bipolar-only input and fixed supply are acceptable; pinout incompatible with MAX153EAP+. |
Compared with MAX153EAP+, ADS7822U trades parallel simplicity for serial interface complexity and lower speed, while MAX115CPE+ offers faster sampling but sacrifices unipolar operation and ratiometric capability - making MAX153EAP+ uniquely balanced for µP-based, low-power, mixed-supply embedded systems.
Availability
MAX153EAP+ is available at Aetrix Electronics and suitable for cellular telephones, portable radios, and battery-powered systems requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX153EAP+ 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 power-management ICs for demanding industrial, automotive, and communications applications.
The MAX153EAP+ belongs to Maxim's high-speed data acquisition product line, engineered specifically for µP-centric, low-power, real-time digitization in portable and burst-mode systems - emphasizing speed, interface simplicity, and supply flexibility.
FAQ
What is the operating temperature range of the MAX153EAP+?
The MAX153EAP+ is rated for industrial operation from −40°C to +85°C. This extended temperature range ensures reliable performance in outdoor portable radios, automotive telematics modules, and industrial data loggers exposed to thermal cycling - unlike the commercial-grade MAX153CAP+ (0°C to +70°C). All electrical specifications in the datasheet are guaranteed across this full range.
How does the MAX153EAP+ achieve 1µA power-down current?
The MAX153EAP+ achieves 1µA typical power-down current by disabling internal bias circuits, comparators, and clock generation when the PWRDN pin is driven low - but only if CS remains high to prevent partial activation. At +5V supply, this reduces IDD from 8–20mA to 1µA, cutting system power by >99%. The device wakes fully within 200ns, enabling rapid response to burst-mode triggers.
Can the MAX153EAP+ operate with a single +5V supply in bipolar mode?
No - bipolar operation of the MAX153EAP+ requires dual ±5V supplies: VDD = +5V and VSS = −5V. The analog input range becomes ±2.5V, with VREF+ = +2.5V and VREF− = −2.5V. Unipolar mode (0V to +5V input) uses VSS = GND. Attempting bipolar input with only +5V and GND violates absolute maximum ratings and causes incorrect conversion results.
What is the purpose of the MODE pin on the MAX153EAP+?
The MODE pin on the MAX153EAP+ selects between two fundamental interface protocols: logic-low (≈0V) configures RD mode - where RD initiates conversion and WR/RDY acts as a ready signal; logic-high (≈+5V) enables WR-RD mode - where WR starts conversion and RD reads the result, supporting faster pipelined operation. An internal 50µA pulldown ensures default RD mode if left unconnected.
Does the MAX153EAP+ require an external clock source?
No - the MAX153EAP+ contains all necessary timing circuitry internally and requires no external clock. Conversion timing is controlled entirely by the µP's WR and RD strobes. In WR-RD mode, the 660ns conversion time is determined by internal propagation delays and is independent of external clock frequency - simplifying system design and eliminating clock distribution noise paths.
MAX153EAP+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 20-SSOP (0.209", 5.30mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- 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-SSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX153EAP+ FAQ
1.How can I place an order for MAX153EAP+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX153EAP+ 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 MAX153EAP+ reliable?
The price and inventory of MAX153EAP+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX153EAP+ is usually 5 days.
3.What payment methods are accepted for MAX153EAP+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX153EAP+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX153EAP+?
MAX153EAP+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX153EAP+ 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 MAX153EAP+?
For technical support, including MAX153EAP+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX153EAP+ requirements.
6.How does Aetrix verify that MAX153EAP+ is sourced from the original manufacturer or authorized distributors?
All MAX153EAP+ 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 MAX153EAP+ meets industry standards.
7.What is the process for return or replacement of MAX153EAP+?
All MAX153EAP+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX153EAP+, 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 MAX153EAP+ part is unused and in its original packaging.
Return procedure for MAX153EAP+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX153EAP+ Tags
-
ADC081C021CIMKX/NOPB
Texas Instruments
-
MCP3021A5T-E/OT
Microchip Technology
-
TLA2024IRUGR
Texas Instruments
-
MCP3221A5T-E/OT
Microchip Technology
-
MCP3221A5T-I/OT
Microchip Technology
-
MCP3221A4T-E/OT
Microchip Technology
-
MCP3221A6T-E/OT
Microchip Technology
-
MCP3221A0T-E/OT
Microchip Technology
-
MCP3221A1T-E/OT
Microchip Technology
-
ADC121S021CIMFX/NOPB
Texas Instruments
-
MCP3001-I/MS
Microchip Technology
-
MCP3001-I/SN
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
