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Analog Devices Inc./Maxim Integrated MAX152CPP+
- Part No.:
- MAX152CPP+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 20-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX152CPP+.pdf
- Description:
- IC ADC 8BIT 1UA PWR-DWN 20-DIP
- Quantity:
- Payment:
- Shipping:
Inventory:1,612
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Product details
Overview
MAX152CPP+ from Maxim Integrated is an 8-bit, 400ksps microprocessor-compatible analog-to-digital converter (ADC) using half-flash architecture to achieve 1.8µs conversion time. It operates from a single +3.0V to +3.6V supply, supports unipolar/bipolar inputs, and features 1µA power-down current-enabling ultra-low-power burst-mode data acquisition in portable radios and battery-powered systems.
For engineers reviewing the MAX152CPP+ datasheet, MAX152CPP+ pinout, MAX152CPP+ application, or MAX152CPP+ equivalent, this page delivers verified electrical parameters, RD/WR-RD interface timing behavior, ratiometric reference operation, and real-world design implications for high-speed servo loops and digital signal processing systems.
Technical Context
The MAX152CPP+ 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 full 8-bit resolution with only 15 comparators. Its track/hold is integrated, eliminating external components.
Digital interface flexibility is defined by the MODE pin: RD mode uses RD as conversion trigger and WR/RDY as ready-status output; WR-RD mode initiates conversion on WR falling edge and latches MSBs immediately, enabling sub-2µs total conversion in fastest timing configuration (tCWR = 1.8µs).
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 8-bit - delivers 256 discrete output codes for precise quantization of analog sensor or signal chain outputs. |
| Conversion Time | 1.8µs (typical, RD mode) - enables 400ksps sustained sampling, sufficient for baseband audio and telecom channel monitoring. |
| Supply Voltage | +3.0V to +3.6V - compatible with modern low-voltage logic rails and eliminates need for dual-supply generation in portable designs. |
| Power-Down Current | 1µA (typical) - reduces average system power by >99% during idle intervals in burst-mode acquisition. |
| Input Bandwidth | 300kHz full-power - supports accurate digitization of signals up to ~100kHz fundamental without aliasing-induced distortion. |
| Reference Interface | Ratiometric VREF+/VREF− - allows direct connection to sensor bridges or resistive dividers, rejecting supply ripple in measurement accuracy. |
| Interface Mode | RD or WR-RD selectable via MODE pin - provides µP bus compatibility without external glue logic; INT output signals conversion completion. |
Pinout & Package
MAX152CPP+ is housed in a 20-pin plastic DIP package (0.300" wide), RoHS-compliant and rated for 0°C to +70°C operation. Pin spacing follows standard 0.1" grid; body dimensions are 0.300" × 0.600".
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VIN (Pin 1) | Analog input | Accepts unipolar (0V to VREF+) or bipolar (VREF− to VREF+) signals; 22pF input capacitance requires ≤2.2kΩ source impedance for full accuracy. |
| D0–D7 (Pins 2–5, 14–17) | Three-state digital outputs | LSB-to-MSB parallel data bus; latched and buffered for direct µP data bus connection-no external drivers needed. |
| WR/RDY (Pin 6) | Control I/O | In RD mode: open-collector ready status (RDY); in WR-RD mode: write strobe input-dual function reduces pin count. |
| MODE (Pin 7) | Interface configuration | Internally pulled low (15µA); MODE = 0 selects RD mode, MODE = 1 enables WR-RD mode with faster throughput. |
| RD (Pin 8) | Read control | Active-low read enable; in RD mode, initiates conversion and gates data access; must be held low for µP wait-state synchronization. |
| INT (Pin 9) | Interrupt output | Active-low open-drain signal indicating conversion completion; resets on rising edge of CS or RD-enables interrupt-driven firmware flow. |
| GND (Pin 10) | Signal ground | Reference for analog inputs, digital I/O, and internal circuitry; requires dedicated low-impedance PCB plane per layout guidelines. |
| VREF− (Pin 11) | Reference lower bound | Sets zero-code point; in bipolar mode tied to −3V rail; internal 1kΩ VREF+–VREF− path necessitates MOSFET switch during power-down. |
| VREF+ (Pin 12) | Reference upper bound | Sets full-scale code; ratiometric operation allows VREF+ = VDD (simplifies supply-referenced sensors) or precision external reference. |
| CS (Pin 13) | Chip select | Active-low enable; must be low for WR/RD commands to be recognized-supports multi-device µP bus sharing. |
| VSS (Pin 19) | Negative supply | Required only for bipolar operation (−3.0V to −3.6V); unipolar mode connects to GND-pin must not float. |
| VDD (Pin 20) | Positive supply | +3.0V to +3.6V main power; bypassed with 4.7µF + 0.1µF capacitor stack to suppress switching noise coupling into analog section. |
Key Features
| Feature | Design Value |
|---|---|
| No external clock required | Internal timing generator eliminates clock distribution complexity and jitter sensitivity-ideal for compact, low-EMI layouts. |
| 1.8µs conversion time | Enables 400ksps sampling without pipeline latency; supports real-time closed-loop control in servo systems with <2.5µs total loop delay. |
| 1µA power-down current | Reduces average supply current by orders of magnitude in intermittent sensing applications-extends battery life in cellular telephones and portable radios. |
| Ratiometric reference inputs | Compensates for supply drift and resistor tolerance in bridge-based sensors-delivers stable measurement accuracy without calibration over temperature. |
| Internal track/hold | Removes need for external sample-and-hold IC or op-amp circuitry-reduces BOM count, board area, and signal-path error sources. |
Applications
| Cellular Telephones | Portable Radios |
|---|---|
Use Scenario: Digitizing RF front-end AGC voltage and microphone bias in GSM/CDMA handsets with tight power budgets. IC Role / Device Role / Timing Role: ADC capturing analog control signals at 100–200ksps during call setup and voice bursts; powers down between frames. Use Value: 1µA power-down cuts standby current by >99%, directly extending talk time and standby duration without sacrificing responsiveness. |
Use Scenario: Sampling audio codec inputs and battery voltage monitors in handheld two-way radios operating on alkaline or Li-ion cells. IC Role / Device Role / Timing Role: High-speed, low-noise digitizer interfacing directly to µP data bus; selected for 3V-only operation and minimal external components. Use Value: Single-supply +3V operation eliminates negative rail generation; ratiometric reference ensures accurate battery gauge readings across discharge curve. |
| Battery-Powered Systems | Burst-Mode Data Acquisition |
Use Scenario: Monitoring temperature, pressure, and acceleration in IoT edge nodes powered by coin cells or energy harvesters. IC Role / Device Role / Timing Role: Low-quiescent ADC activated only during scheduled sensor reads; powers up in <900ns to capture transient events. Use Value: Sub-microsecond wake-up time enables detection of fast transients (e.g., impact events) while maintaining multi-year battery life. |
Use Scenario: Capturing short-duration pulses from ultrasonic transducers or photodiode arrays in medical or industrial test equipment. IC Role / Device Role / Timing Role: Stand-alone mode (CS/RD grounded) triggered by WR pulse; outputs valid data before next WR edge-no µP intervention needed. Use Value: Eliminates µP overhead and timing constraints; achieves deterministic 465kHz max sampling rate with hardware-only sequencing. |
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 |
|---|---|---|---|
| MAX153CPP+ | Pin-compatible 8-bit ADC with identical pinout, timing, and power specs-but includes internal +2.5V reference (MAX152 lacks internal reference). | Preferred when external reference design adds cost/complexity; unsuitable if ratiometric operation with custom VREF+ is required. | Select MAX153CPP+ only if internal reference simplifies layout and system accuracy requirements permit its ±0.5% initial tolerance. |
| ADS7822U | 8-bit, 200ksps SAR ADC (vs. MAX152's half-flash); consumes 2.5mA active current (vs. 1.5mA); requires external clock; no power-down mode. | Better DC accuracy (±0.5 LSB INL) but slower and higher power-suited for precision DC measurements, not burst-mode speed. | Choose ADS7822U for static sensor readouts where throughput <200ksps suffices and lowest integral nonlinearity is critical. |
Compared with MAX152CPP+, MAX153CPP+ offers integrated reference convenience at the cost of ratiometric flexibility, while ADS7822U trades speed and ultra-low-power shutdown for superior DC linearity-making MAX152CPP+ optimal for battery-constrained, high-throughput burst acquisition where timing determinism and supply rejection matter most.
Availability
MAX152CPP+ is available at Aetrix Electronics and suitable for cellular telephones, portable radios, and battery-powered systems requiring stable component supply, long-term manufacturability, and guaranteed commercial-temperature performance (0°C to +70°C).
Supply support for MAX152CPP+ 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, communications, and consumer applications.
The MAX152CPP+ belongs to Maxim's high-speed data acquisition product line, designed specifically for low-voltage, low-power, µP-compatible ADC applications in portable and burst-mode instrumentation systems.
FAQ
What is the maximum sampling rate achievable with MAX152CPP+?
The MAX152CPP+ achieves a maximum sampling rate of 465ksps in WR-RD mode with tRD < tINTL timing (fastest configuration). This is calculated as 1/(tWR + tRD + tRI + tP) = 1/(600ns + 800ns + 300ns + 450ns) ≈ 465ksps. At 400ksps, it meets all AC specifications including SINAD ≥45dB and SNR ≥48.2dB at 30.27kHz input.
Does MAX152CPP+ require an external clock signal?
No, the MAX152CPP+ does not require an external clock. All timing-including conversion initiation, track/hold control, and data latching-is generated internally. This eliminates clock routing, jitter concerns, and external oscillator BOM cost, making it ideal for space- and noise-sensitive portable designs.
How does the ratiometric reference feature work in MAX152CPP+?
The MAX152CPP+ accepts independent VREF+ and VREF− inputs, allowing the full-scale range to scale with the reference voltage. When VREF+ is tied to a sensor bridge excitation rail, digitized output becomes independent of supply variations-e.g., a 3.0V VREF+ yields 0–3.0V input range, while 2.5V yields 0–2.5V, preserving measurement ratio integrity.
What is the power-up time from power-down mode for MAX152CPP+?
The MAX152CPP+ powers up and acquires a valid input sample in less than 900ns after PWRDN is driven high. This includes both internal circuit wake-up and track/hold acquisition time. The specification is guaranteed across 0°C to +70°C and +3.0V to +3.6V supply, enabling true microsecond-scale responsiveness in burst-mode systems.
Can MAX152CPP+ operate with bipolar input signals?
Yes, the MAX152CPP+ supports bipolar inputs by configuring VSS = −3.0V, VREF− = −1.5V, and VREF+ = +1.5V, yielding a ±1.5V input range. The device guarantees ±1 LSB DNL and ±1 LSB TUE in bipolar mode, with full dynamic performance maintained-verified per datasheet Note 2 test conditions.
MAX152CPP+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 20-DIP (0.300", 7.62mm)
- 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:
- 0°C ~ 70°C
- Supplier Device Package:
- 20-PDIP
- Mounting Type:
- Through Hole
- Grade:
- -
- Qualification:
- -
MAX152CPP+ FAQ
1.How can I place an order for MAX152CPP+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX152CPP+ 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 MAX152CPP+ reliable?
The price and inventory of MAX152CPP+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX152CPP+ is usually 5 days.
3.What payment methods are accepted for MAX152CPP+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX152CPP+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX152CPP+?
MAX152CPP+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX152CPP+ 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 MAX152CPP+?
For technical support, including MAX152CPP+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX152CPP+ requirements.
6.How does Aetrix verify that MAX152CPP+ is sourced from the original manufacturer or authorized distributors?
All MAX152CPP+ 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 MAX152CPP+ meets industry standards.
7.What is the process for return or replacement of MAX152CPP+?
All MAX152CPP+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX152CPP+, 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 MAX152CPP+ part is unused and in its original packaging.
Return procedure for MAX152CPP+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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