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Analog Devices Inc./Maxim Integrated MAX1204BCPP
- Part No.:
- MAX1204BCPP
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 20-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX1204BCPP.pdf
- Description:
- IC ADC 10BIT SAR 20DIP
- Quantity:
- Payment:
- Shipping:
Inventory:3,553
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Product details
Overview
MAX1204BCPP from Maxim Integrated is a 10-bit, 8-channel serial analog-to-digital converter (ADC) designed for mixed +5V analog / +3V digital supply systems. It integrates an internal track/hold, 4.096V reference with buffer, SPI/MICROWIRE/TMS320-compatible 4-wire serial interface, and supports unipolar/bipolar input modes. It delivers 133ksps sampling rate with ±0.5 LSB INL and operates in commercial temperature range (0°C to +70°C) using 20-pin PDIP packaging.
For engineers reviewing the MAX1204BCPP datasheet, MAX1204BCPP pinout, MAX1204BCPP application, or MAX1204BCPP equivalent, this device is selected for low-power, precision data acquisition where dual-voltage domain interfacing, software-configurable input ranges, and sub-10µA shutdown current are critical - especially in battery-powered instrumentation and process control systems requiring stable 10-bit resolution without external reference components.
Technical Context
The MAX1204BCPP employs successive-approximation register (SAR) architecture with integrated track/hold and programmable clocking (internal or external up to 2MHz). Its analog front-end supports both single-ended (8-channel) and pseudo-differential (4-channel) inputs, with common-mode range spanning VSS to VDD and full-scale determined by internal 4.096V reference or external source.
Digital interface logic levels are user-adjustable via VL pin (2.7V–5.25V), enabling direct connection to 3V, 3.3V, or 5V microcontrollers. Power management includes two software-selectable power-down modes (fast: 30µA; full: 2µA) and hard-wired SHDN pin, allowing dynamic current optimization between conversions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit - delivers 1024 discrete output codes with monotonic transfer function and no missing codes over temperature. |
| Sampling Rate | 133ksps - achieved with 15-clock conversion cycle at 2MHz SCLK; enables real-time monitoring of medium-bandwidth sensor signals. |
| INL | ±0.5 LSB - ensures high linearity for accurate amplitude measurement across full scale without calibration. |
| Reference | Internal 4.096V ±0.5% - eliminates need for external voltage reference and simplifies gain trim in uncalibrated systems. |
| Supply Current (Operating) | 1.5mA - supports extended battery life in portable instruments while maintaining full performance. |
| Shutdown Current | 2µA - allows deep power-down between samples to reduce average system power in low-duty-cycle DAQ applications. |
| Input Configuration | 8 single-ended or 4 pseudo-differential channels - provides flexible signal routing for multi-sensor monitoring with shared ground or differential noise rejection. |
Pinout & Package
MAX1204BCPP is housed in a 20-pin plastic DIP (PDIP) package with 0.3-inch body width and through-hole mounting. Pin spacing is 0.1 inch; lead finish is lead(Pb)-free/RoHS-compliant.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CH0–CH7 (Pins 1–8) | Analog Input Channels | Selectable as single-ended inputs (referred to GND) or paired differential inputs (e.g., CH0/CH1); support ±0.5 LSB stability requirement on IN− in differential mode. |
| VSS (Pin 9) | Negative Supply Rail | Accepts 0V (unipolar) or −5V ±5% (bipolar); defines lower bound of analog input common-mode range. |
| SHDN (Pin 10) | Three-Level Shutdown Control | Pull low → 10µA shutdown; float → external REFADJ compensation; tie to VDD → internal compensation mode. |
| REF (Pin 11) | Reference Buffer Output / ADC Reference Input | Provides 4.096V nominal output when internal reference enabled; accepts external reference when REFADJ = VDD. |
| GND (Pin 13) | Analog/Digital Ground | Common return for analog inputs and digital logic; serves as IN− for single-ended conversions. |
| REFADJ (Pin 12) | Reference-Buffer Gain Adjustment | Tie to GND for nominal 4.096V output; tie to VDD to disable internal reference buffer for external reference use. |
| VDD (Pin 20) | Positive Analog Supply | Operates from +5V ±5%; powers analog core, multiplexer, and reference buffer. |
| SCLK (Pin 19) | Serial Clock Input | Drives data transfer and (in external clock mode) controls SAR conversion timing; supports up to 2MHz with 40–60% duty cycle. |
| CS (Pin 18) | Active-Low Chip Select | Enables serial interface and output drivers; DOUT/SSTRB enter high-impedance state when CS is high. |
| DIN (Pin 17) | Serial Data Input | Receives 8-bit control byte defining channel, unipolar/bipolar mode, SGL/DIF, and clock/power-down configuration. |
| DOUT (Pin 15) | Serial Data Output | Outputs 10-bit result plus status bits (S1,S0) MSB-first on SCLK falling edge; logic level set by VL voltage. |
| SSTRB (Pin 16) | Serial Strobe Output | Indicates conversion start/end: low during conversion in internal clock mode; pulses high before MSB in external clock mode. |
| VL (Pin 14) | Digital Output Supply | Sets DOUT/SSTRB high-level voltage (2.7V–5.25V); enables interoperability with 3V/3.3V/5V logic families without level shifters. |
Key Features
| Feature | Design Value |
|---|---|
| User-adjustable digital output voltage | VL pin sets DOUT/SSTRB swing from 2.7V to 5.25V - eliminates external level-shifting circuitry when interfacing with mixed-voltage microcontrollers. |
| Integrated 4.096V reference with buffer | Reduces BOM count and layout area; ±0.8ppm/°C gain tempco ensures stable full-scale accuracy across 0°C to +70°C. |
| Two software-selectable power-down modes | Fast (30µA) and full (2µA) shutdown allow fine-grained energy management - critical for battery-operated medical or field instruments. |
| SPI/MICROWIRE/TMS320-compatible interface | Direct connection to industry-standard controllers without glue logic; supports CPOL=0/CPHA=0 SPI configuration and TMS320 serial strobe timing. |
| Programmable unipolar/bipolar input mode | Single control bit selects full-scale range: 0V to +4.096V (unipolar) or −2.048V to +2.048V (bipolar) - simplifies signal conditioning for AC-coupled or offset-sensitive sensors. |
Applications
| Battery-Powered Instrumentation | Industrial Process Monitoring |
|---|---|
Use Scenario: Portable multimeter or handheld sensor logger operating from coin-cell or Li-ion battery with strict average current budget. IC Role / Device Role / Timing Role: ADC front-end acquiring voltage/current/temperature readings at 100–1000Hz with automatic power-down between samples. Use Value: 2µA full shutdown current and 1.5mA active current enable >1-year battery life; 3V-compatible VL pin avoids extra regulators for MCU I/O. |
Use Scenario: PLC analog input module measuring 4–20mA transducer outputs and thermocouple signals in factory automation. IC Role / Device Role / Timing Role: Precision digitizer converting multiple sensor channels with configurable bipolar range and internal reference stability. Use Value: ±0.5 LSB INL and ±1.0 LSB DNL ensure <0.1% measurement error; 8-channel MUX reduces component count per channel. |
| Medical Diagnostic Equipment | Automotive Test & Calibration Tools |
Use Scenario: ECG or patient vital sign monitor requiring low-noise, low-power analog acquisition with clinical-grade linearity. IC Role / Device Role / Timing Role: Signal chain ADC capturing biopotential waveforms with track/hold settling and 133ksps sampling for alias-free analysis. Use Value: 70dB SFDR and −70dB THD preserve waveform fidelity; internal 4.096V reference eliminates drift-induced calibration drift. |
Use Scenario: Handheld OBD-II scanner or engine calibration tool acquiring analog sensor data (MAP, TPS, coolant temp) in vehicle service bays. IC Role / Device Role / Timing Role: Mixed-supply ADC interfacing 5V sensors and 3.3V ARM-based host processor via SPI with minimal external components. Use Value: Dual +5V/+3V supply support eliminates level translators; 20-pin PDIP simplifies prototyping and repair-friendly PCB layout. |
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 |
|---|---|---|---|
| MAX1202BCPP+ | 12-bit resolution, same pinout and serial interface; higher INL (±1 LSB) and 1.8mA operating current. | Used where higher resolution justifies 20% higher power and potential firmware rework for 12-bit data handling. | Select MAX1202BCPP+ only if system requires >10-bit precision and can accommodate increased code depth and slightly higher supply current. |
| ADS7822U | 12-bit, SPI-only interface (no MICROWIRE/TMS320 strobe), 2.7V–5.25V supply, no internal reference - requires external 2.5V reference. | Preferred in designs already using external references and TI ecosystem; lacks SHDN pin and VL-level flexibility. | Choose ADS7822U when leveraging TI's reference design libraries and external reference infrastructure is already in place; avoid if 3V logic compatibility or internal reference simplicity is required. |
Compared with MAX1202BCPP+, the MAX1204BCPP trades 2-bit resolution for lower power and guaranteed no-missing-codes performance; versus ADS7822U, it offers integrated reference and wider logic voltage support but uses Maxim-specific control byte format instead of standard SPI framing.
Availability
MAX1204BCPP is available at Aetrix Electronics and suitable for battery-powered instrumentation, industrial process monitoring, medical diagnostic equipment, and automotive test tools requiring stable component supply with RoHS-compliant through-hole packaging.
Supply support for MAX1204BCPP 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, medical, and communications applications.
The MAX1204 belongs to Maxim's precision data-acquisition product line, engineered for low-power, mixed-voltage systems where integration of reference, track/hold, and flexible serial interface reduces design complexity and board space.
FAQ
What is the maximum sampling rate achievable with MAX1204BCPP?
The MAX1204BCPP achieves a maximum sampling rate of 133ksps when operated with a 2MHz external serial clock and 15-clock conversion cycle. This rate assumes optimal acquisition time (≥1.5µs) and stable analog input source impedance ≤4kΩ. Internal clock mode yields identical throughput but decouples conversion timing from SCLK frequency, allowing slower or variable clock rates during data readout.
Does MAX1204BCPP require an external reference for basic operation?
No, MAX1204BCPP does not require an external reference for basic operation. It includes an internal 4.096V reference with buffer amplifier and ±0.5% initial accuracy. The REFADJ pin allows fine-tuning or disabling the internal reference; tying REFADJ to VDD disables the buffer and enables use of an external reference applied to the REF pin.
How does the VL pin affect digital interface compatibility of MAX1204BCPP?
The VL pin on MAX1204BCPP directly sets the high-level output voltage of DOUT and SSTRB pins, supporting 2.7V to 5.25V logic levels. This allows seamless interfacing with 3V, 3.3V, or 5V microcontrollers without external level shifters. When VL = 3.3V, outputs swing from 0V to 3.3V; when VL = 5V, they swing 0V to 5V - matching host system I/O voltage domains precisely.
What power-down modes are supported by MAX1204BCPP and how are they activated?
MAX1204BCPP supports two software-selectable power-down modes: fast power-down (30µA) and full power-down (2µA), both configured via PD1/PD0 bits in the control byte. Additionally, a hard-wired SHDN pin provides hardware-initiated shutdown (<10µA). All modes retain register state and allow instant wake-up upon CS assertion or SHDN deactivation - no reinitialization required.
Is MAX1204BCPP pin-compatible with any higher-resolution alternatives?
Yes, MAX1204BCPP is pin-compatible with the 12-bit MAX1202 series (e.g., MAX1202BCPP+), sharing identical 20-pin PDIP footprint, pin functions, and serial interface protocol. This allows straightforward resolution upgrade in existing designs with minimal layout changes - though firmware must handle 12-bit data width and updated timing parameters.
MAX1204BCPP 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, 5V
- Voltage - Supply, Digital:
- ±5V, 5V
- Features:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 20-PDIP
- Mounting Type:
- Through Hole
- Grade:
- -
- Qualification:
- -
MAX1204BCPP FAQ
1.How can I place an order for MAX1204BCPP through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1204BCPP 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 MAX1204BCPP reliable?
The price and inventory of MAX1204BCPP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1204BCPP is usually 5 days.
3.What payment methods are accepted for MAX1204BCPP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1204BCPP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1204BCPP?
MAX1204BCPP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1204BCPP 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 MAX1204BCPP?
For technical support, including MAX1204BCPP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1204BCPP requirements.
6.How does Aetrix verify that MAX1204BCPP is sourced from the original manufacturer or authorized distributors?
All MAX1204BCPP 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 MAX1204BCPP meets industry standards.
7.What is the process for return or replacement of MAX1204BCPP?
All MAX1204BCPP units undergo pre-shipment inspection (PSI). If there is an issue with MAX1204BCPP, 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 MAX1204BCPP part is unused and in its original packaging.
Return procedure for MAX1204BCPP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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