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Analog Devices Inc./Maxim Integrated MAX192ACPP
- Part No.:
- MAX192ACPP
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 20-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX192ACPP.pdf
- Description:
- IC ADC 10BIT SAR 20DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,919
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Product details
Overview
The MAX192ACPP from Maxim Integrated is a low-power, 8-channel, serial 10-bit analog-to-digital converter (ADC) with integrated track/hold, internal 4.096V reference, and SPI/QSPI/Microwire-compatible 4-wire serial interface. It operates from a single +5V supply, supports software-configurable single-ended or differential (unipolar/bipolar) inputs, and achieves 133ksps sampling rate with 1.5mA operating current. It is used in portable data logging and battery-powered instrumentation where precision, low power, and compact serial interfacing are critical.
For engineers reviewing the MAX192ACPP datasheet, MAX192ACPP pinout, MAX192ACPP application, or MAX192ACPP equivalent, key selection considerations include its 10-bit resolution with ±1 LSB INL, 133ksps conversion rate using external clock, internal track/hold acquisition time of 1.5µs, shutdown current <10µA, and compatibility with TMS320 DSPs via SSTRB strobe output.
Technical Context
The MAX192ACPP employs successive-approximation register (SAR) architecture with an integrated track/hold circuit that acquires input signals over three SCLK cycles before conversion. Its analog front-end supports pseudo-differential sampling with configurable channel pairs (CH0/CH1, CH2/CH3, etc.) and precise common-mode handling-AGND to VDD for single-ended, ±VREF/2 for bipolar differential mode.
It features dual clocking modes: internal clock (freeing host MCU from SAR timing) or external clock (up to 10MHz SCLK in internal mode, up to 4MHz in external mode with 15-cycle conversion). The 4-wire serial interface uses MSB-first, falling-edge data output (DOUT), and includes SSTRB strobe for synchronous DSP interfacing without added logic.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit SAR ADC with no missing codes over temperature; delivers 1024 discrete digital levels per conversion. |
| Sampling Rate | 133ksps maximum with 2MHz external clock and 15-clock cycle; enables real-time monitoring of sub-10kHz signals. |
| INL / DNL | ±1 LSB integral nonlinearity (MAX192A grade); ensures monotonicity and ≤0.1% full-scale error after calibration. |
| Reference | Internal 4.096V bandgap reference with ±30ppm/°C drift; eliminates need for external precision reference in most applications. |
| Supply Current | 1.5mA active, 2µA full power-down; reduces average power in duty-cycled systems like portable sensors. |
| Input Configuration | 8 single-ended or 4 pseudo-differential channels; software-selectable via 8-bit control byte with SGL/DIF and UNI/BIP bits. |
| Serial Interface | 4-wire SPI/QSPI/Microwire compatible; supports direct connection to TMS320 DSPs via SSTRB strobe output. |
Pinout & Package
The MAX192ACPP is housed in a 20-pin plastic DIP package (0°C to +70°C industrial temperature range), with dual ground pins (AGND at Pins 9 & 13, DGND at Pin 14) for analog/digital separation and dedicated reference pins (VREF at Pin 11, REFADJ at Pin 12) enabling internal or external compensation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CH0–CH7 (Pins 1–8) | Analog input channels | Configurable as 8 single-ended inputs (vs. AGND) or 4 differential pairs; support unipolar (0V–VREF) or bipolar (±VREF/2) ranges. |
| SHDN (Pin 10) | Three-level shutdown control | Pull low → 10µA shutdown; float → external compensation; pull high → internal compensation mode for VREF buffer. |
| VREF (Pin 11) | Reference voltage output/input | Provides 4.096V reference when enabled; accepts external precision reference when REFADJ tied to VDD. |
| REFADJ (Pin 12) | Reference buffer amplifier input | Adjusts VREF gain (1.678×) and sets compensation mode; requires 0.01µF bypass for stability in external mode. |
| DOUT (Pin 15) | Serial data output | MSB-first, clocked on SCLK falling edge; high-impedance when CS is high-enables bus sharing. |
| SSTRB (Pin 16) | Serial strobe output | Signals conversion start/end: low during conversion (internal mode) or pulses high before MSB (external mode) for DSP sync. |
| DIN (Pin 17) | Serial data input | Accepts 8-bit control byte (START, SEL2–SEL0, UNI/BIP, SGL/DIF, PD1/PD0) on SCLK rising edge. |
| CS (Pin 18) | Active-low chip select | Enables serial interface and powers up device; must be held low during control byte entry and data transfer. |
Key Features
| Feature | Design Value |
|---|---|
| Integrated track/hold | Eliminates external hold capacitor requirement; 1.5µs acquisition time enables accurate sampling of sources ≤5kΩ impedance. |
| Internal 4.096V reference | ±30ppm/°C tempco and ±0.1% initial accuracy reduce system calibration burden and eliminate external reference cost. |
| Two sub-LSB bits | Improves effective resolution and reduces quantization error in averaging or oversampling applications. |
| Software-selectable power-down | Full (2µA) and fast (30µA) modes allow dynamic power scaling between conversions-critical for battery life extension. |
| Pin-compatible upgrade path | Shares pinout and serial protocol with 12-bit MAX186/MAX188, enabling resolution scalability without PCB redesign. |
Applications
| Portable Data Logging | Battery Management Systems |
|---|---|
|
Use Scenario: Compact, battery-operated environmental sensor nodes recording temperature, humidity, and voltage over extended periods. IC Role / Device Role / Timing Role: ADC front-end acquiring multi-channel analog sensor outputs with minimal power draw and serial data compression. Use Value: 2µA shutdown current and 1.5mA active current extend battery life to months; 8-channel multiplexing reduces component count and board area. |
Use Scenario: Monitoring cell voltages and pack current in lithium-ion battery packs for EVs and UPS units. IC Role / Device Role / Timing Role: Precision voltage digitizer for cell balancing feedback and state-of-charge estimation algorithms. Use Value: ±1 LSB INL and internal 4.096V reference ensure <±0.1% full-scale accuracy across temperature-critical for safe charge termination. |
| Medical Instrumentation | Industrial Robotics |
|
Use Scenario: Portable ECG or pulse oximeter devices requiring low-noise, low-power signal acquisition near human body. IC Role / Device Role / Timing Role: Analog front-end digitizing biopotential signals with differential input rejection of common-mode interference. Use Value: Pseudo-differential architecture and AGND-referenced analog inputs suppress noise from shared ground paths in compact enclosures. |
Use Scenario: Joint position sensing and motor current feedback in collaborative robot arms with strict thermal and size constraints. IC Role / Device Role / Timing Role: Multi-sensor aggregator converting encoder, torque, and temperature signals for real-time motion control loops. Use Value: 133ksps sampling and SSTRB strobe enable deterministic timing alignment with TMS320-based servo controllers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 10-bit serial ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX186BCPP | 12-bit resolution, same 20-pin DIP package, identical serial interface and pinout; higher INL (±2 LSB), 100ksps max rate. | Used where higher resolution outweighs speed loss-e.g., precision thermocouple measurement with post-processing. | Select MAX186BCPP when 12-bit accuracy is required and 133ksps is not mandatory; retains same layout and firmware structure. |
| ADS7822U | 12-bit, 200ksps, SPI-only interface, single-supply +2.7V to +5.25V, no internal reference-requires external 2.5V ref. | Suitable for ultra-low-voltage systems (e.g., coin-cell powered IoT sensors) but adds BOM cost and layout complexity. | Choose ADS7822U only if supply voltage flexibility below 4.75V is essential; otherwise MAX192ACPP offers better integration and lower system cost. |
Compared with MAX186BCPP and ADS7822U, the MAX192ACPP uniquely balances 10-bit precision, 133ksps speed, internal reference, and ultra-low shutdown current in a legacy-compatible DIP package-making it optimal for cost-sensitive, battery-constrained industrial and medical designs where 12-bit resolution is unnecessary.
Availability
The MAX192ACPP is available at Aetrix Electronics and suitable for portable data logging, battery management systems, and medical instrumentation requiring stable component supply across industrial temperature ranges (0°C to +70°C).
Supply support for MAX192ACPP 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 MAX192ACPP belongs to Maxim's precision data-acquisition product line, designed specifically for low-power, multi-channel, serial-interfaced ADC applications in space- and energy-constrained embedded systems.
FAQ
What is the operating temperature range for the MAX192ACPP?
The MAX192ACPP is rated for operation from 0°C to +70°C, as indicated by the "AC" suffix in its part number. This industrial-grade temperature range ensures reliable performance in commercial and light-industrial environments without requiring extended thermal qualification. The MAX192ACPP maintains specified INL (±1 LSB), gain error (±2 LSB), and reference stability (±30ppm/°C) across this full range.
Does the MAX192ACPP require an external reference voltage?
No-the MAX192ACPP includes an internal 4.096V bandgap reference with ±30ppm/°C temperature coefficient, eliminating the need for an external reference in most applications. However, it supports external referencing via the REFADJ pin (when tied to VDD) or VREF pin (for precision 4.096V sources), providing design flexibility for metrology-grade systems where tighter reference accuracy is required.
How does the MAX192ACPP handle differential input configurations?
The MAX192ACPP supports pseudo-differential inputs via channel pairing (CH0/CH1, CH2/CH3, etc.), where the negative input (IN−) must remain stable within ±0.5LSB of AGND during conversion. In bipolar mode, it accepts differential signals from −VREF/2 to +VREF/2; in unipolar differential mode, the range is 0V to VREF. The SGL/DIF bit in the control byte selects the mode, and Tables 1–2 define valid channel combinations.
Can the MAX192ACPP interface directly with TMS320 DSPs?
Yes-the MAX192ACPP provides a dedicated SSTRB (serial strobe) output that pulses synchronously with conversion timing: low during conversion in internal clock mode, or high for one clock period before MSB output in external clock mode. This allows direct hardware handshake with TMS320 family DSPs without glue logic, simplifying real-time data capture in motor control and audio processing applications using the MAX192ACPP.
What are the power-down modes supported by the MAX192ACPP?
The MAX192ACPP offers two software-selectable power-down modes controlled by PD1/PD0 bits in the control byte: full power-down (2µA supply current) and fast power-down (30µA). Additionally, the SHDN pin provides hardware-triggered shutdown (<10µA). All modes retain configuration state, allowing rapid wake-up and conversion resumption-ideal for burst-mode sensing in battery-powered MAX192ACPP deployments.
MAX192ACPP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 20-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Number of Bits:
- 10
- Sampling Rate (Per Second):
- 133k
- Number of Inputs:
- 4, 8
- Input Type:
- Differential, Single Ended
- Data Interface:
- SPI
- Configuration:
- MUX-S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External, Internal
- Voltage - Supply, Analog:
- 5V
- Voltage - Supply, Digital:
- 5V
- Features:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 20-PDIP
- Mounting Type:
- Through Hole
- Grade:
- -
- Qualification:
- -
MAX192ACPP FAQ
1.How can I place an order for MAX192ACPP through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX192ACPP 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 MAX192ACPP reliable?
The price and inventory of MAX192ACPP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX192ACPP is usually 5 days.
3.What payment methods are accepted for MAX192ACPP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX192ACPP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX192ACPP?
MAX192ACPP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX192ACPP 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 MAX192ACPP?
For technical support, including MAX192ACPP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX192ACPP requirements.
6.How does Aetrix verify that MAX192ACPP is sourced from the original manufacturer or authorized distributors?
All MAX192ACPP 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 MAX192ACPP meets industry standards.
7.What is the process for return or replacement of MAX192ACPP?
All MAX192ACPP units undergo pre-shipment inspection (PSI). If there is an issue with MAX192ACPP, 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 MAX192ACPP part is unused and in its original packaging.
Return procedure for MAX192ACPP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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