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Analog Devices Inc./Maxim Integrated MAX1204AEAP+T
- Part No.:
- MAX1204AEAP+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 20-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
MAX1204AEAP+T.pdf
- Description:
- IC ADC 10BIT SAR 20SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,608
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Product details
Overview
MAX1204AEAP+T from Maxim Integrated is a 10-bit, 8-channel serial analog-to-digital converter optimized for mixed +5V analog / +3V digital supply systems. It integrates an on-chip track/hold, internal 4.096V reference, SPI/MICROWIRE/TMS320-compatible 4-wire interface, and supports unipolar/bipolar input modes. It delivers 133ksps sampling rate with 1.5mA operating current and operates across –40°C to +85°C.
For engineers reviewing the MAX1204AEAP+T datasheet, MAX1204AEAP+T pinout, MAX1204AEAP+T application, or MAX1204AEAP+T equivalent, this page provides verified technical context, exact pin functions, real-world use cases in battery-powered instruments and process control, and validated alternative options for system-level ADC selection.
Technical Context
The MAX1204AEAP+T employs successive-approximation (SAR) architecture with integrated track/hold and programmable clocking-supporting both internal and external 2MHz serial clock modes. Its analog front-end accepts 8 single-ended or 4 pseudo-differential inputs, with common-mode range from VSS to VDD and ±0.5 LSB stability requirement on IN– during differential sampling.
It features dual power domains: +5V (or ±5V) analog supply (VDD/VSS) and independently configurable 2.7V–5.25V digital output supply (VL), enabling direct interfacing with 3V microcontrollers without level shifters. The internal reference buffer (gain = 1.68) allows precise gain trim via REFADJ, and SHDN supports three-level control: full shutdown (<10µA), fast power-down (30µA), or internal compensation mode.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit SAR ADC with no missing codes over temperature |
| Sampling Rate | 133ksps maximum (15 SCLK cycles/conversion at 2MHz) |
| Input Channels | 8 single-ended or 4 pseudo-differential (CH0–CH7 pairs) |
| Reference | Internal 4.096V reference with ±0.8ppm/°C tempco; adjustable via REFADJ |
| Supply Current | 1.5mA (active), 2µA (full power-down), <10µA typical between conversions |
| Digital Interface | SPI/MICROWIRE/TMS320-compatible 4-wire serial (SCLK, DIN, DOUT, CS, SSTRB) |
| Operating Temp | –40°C to +85°C (extended range, denoted by 'E' in part number) |
Pinout & Package
MAX1204AEAP+T is housed in a 20-pin SSOP package (body size 7.2mm × 5.3mm, 0.65mm pitch), RoHS-compliant and lead-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CH0–CH7 (Pins 1–8) | Analog Input Channels | Selectable as single-ended inputs (to GND) or differential pairs (CH0/CH1, CH2/CH3, etc.) |
| VSS (Pin 9) | Negative Supply Rail | Accepts 0V (unipolar) or –5V ±5% (bipolar); defines analog ground reference |
| SHDN (Pin 10) | Three-Level Shutdown Control | Low = full shutdown (~2µA); float = external compensation; VDD = internal compensation |
| REF (Pin 11) | Reference Buffer Output / ADC Reference Input | Supplies 4.096V (internal mode); disabled when REFADJ = VDD (external ref mode) |
| GND (Pin 13) | Analog Ground / IN– for Single-Ended Mode | Common return for analog signals and reference circuitry |
| REFADJ (Pin 12) | Reference-Buffer Gain Adjustment | Tied to VDD disables buffer; used with external resistor divider for precision gain trim |
| VDD (Pin 20) | Positive Analog Supply | +5V ±5%; powers analog core, multiplexer, and reference buffer |
| SCLK (Pin 19) | Serial Clock Input | Drives data transfer and conversion timing (up to 2MHz); duty cycle 40–60% |
| CS (Pin 18) | Active-Low Chip Select | Enables serial interface; high = DOUT/SSTRB tri-stated |
| DIN (Pin 17) | Serial Data Input | Accepts 8-bit control byte (channel, mode, clock/power-down settings) |
| DOUT (Pin 15) | Serial Data Output | Outputs 10-bit result + 2 sub-bits + 3 zeros (MSB-first, falling-edge clocked) |
| SSTRB (Pin 16) | Serial Strobe Output | Signals conversion start/end: low during conversion (internal mode), pulse before MSB (external mode) |
| VL (Pin 14) | Digital Output Supply | Sets DOUT/SSTRB logic levels (2.7V–5.25V); enables direct 3V µP interfacing |
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 shifters for 3V µPs |
| Configurable power management | Three SHDN states enable dynamic current optimization: full shutdown (<10µA), fast wake-up (30µA), or active compensation |
| Flexible input configuration | Software-selectable unipolar/bipolar and single-ended/differential modes via 8-bit control byte |
| Integrated reference subsystem | 4.096V internal reference with ±0.8ppm/°C drift and REFADJ-adjustable gain (1.68×) for precision calibration |
| Robust analog input protection | Clamp diodes allow (VSS − 0.3V) to (VDD + 0.3V) input swing; ±50mV full-scale tolerance ensures accuracy |
Applications
| Battery-Powered Instruments | Process Control Systems |
|---|---|
Use Scenario: Portable multimeters, handheld data loggers, and field-deployable sensors requiring long battery life and mixed-voltage signal conditioning. IC Role / Device Role / Timing Role: Primary ADC capturing sensor outputs (temperature, pressure, voltage) with on-demand conversion and ultra-low quiescent current between samples. Use Value: 2µA full power-down current and software-triggered wake-up enable >1-year operation on coin-cell batteries. |
Use Scenario: PLC I/O modules and industrial RTUs digitizing analog sensor signals (4–20mA loops, thermocouples) in noisy factory environments. IC Role / Device Role / Timing Role: Isolated front-end ADC with bipolar input support and high PSR (±0.06mV) to reject supply noise from motor drives and switching power supplies. Use Value: ±5V dual-supply operation and 70dB channel-to-channel crosstalk ensure accurate multi-channel acquisition amid EMI. |
| Medical Instrumentation | 5V/3V Mixed-Supply Embedded Systems |
Use Scenario: Patient monitors and portable diagnostic devices needing clinical-grade accuracy, low power, and compact PCB layout. IC Role / Device Role / Timing Role: High-fidelity signal digitizer for ECG, SpO₂, and respiration waveforms with 10-bit resolution and <1LSB INL error. Use Value: Internal 4.096V reference and ±0.1LSB channel offset matching reduce calibration overhead and improve channel consistency. |
Use Scenario: Edge IoT nodes and embedded controllers using 5V analog sensors and 3.3V ARM/FPGA SoCs in space-constrained designs. IC Role / Device Role / Timing Role: Bridge ADC providing native 3V digital interface (via VL) while accepting 5V analog inputs-no external level translation required. Use Value: Pin-compatible upgrade path to MAX1202 (12-bit) allows resolution scaling without board redesign. |
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 |
|---|---|---|---|
| MAX1202AEAP+T | 12-bit resolution, same pinout/package, identical interface and power architecture | Higher-resolution data acquisition where SNR >70dB required (e.g., precision instrumentation) | Select when 12-bit accuracy is mandatory; retains all MAX1204AEAP+T firmware and layout |
| ADS7822U | 12-bit, SPI-only interface (no TMS320 strobe), 200ksps max, 2.7–5.25V supply only | Systems requiring higher speed and simpler SPI timing but lacking TMS320 DSP integration | Choose for cost-sensitive 3V-only designs; lacks SSTRB and bipolar mode flexibility |
Compared with MAX1204AEAP+T, MAX1202AEAP+T offers 2-bit resolution uplift with zero hardware changes, while ADS7822U trades TMS320 compatibility and bipolar support for lower unit cost and marginally higher throughput in pure SPI environments.
Availability
MAX1204AEAP+T is available at Aetrix Electronics and suitable for battery-powered instruments, process control systems, and medical instrumentation requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX1204AEAP+T 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, designed specifically for mixed-voltage embedded systems requiring low-power, small-footprint ADCs with flexible digital interfacing and robust analog performance.
FAQ
What is the operating temperature range for MAX1204AEAP+T?
The 'E' suffix in MAX1204AEAP+T denotes the extended temperature range of –40°C to +85°C, validated per Maxim's specifications for continuous operation under industrial environmental stress. This range applies to all electrical parameters in the datasheet unless otherwise noted, and is confirmed by thermal testing across the full SSOP package profile.
Does MAX1204AEAP+T support both unipolar and bipolar input configurations?
Yes, MAX1204AEAP+T supports both modes via the UNI/BIP bit (bit 3) in its 8-bit control byte. In unipolar mode, input range is 0V to VREF (e.g., 0V to 4.096V); in bipolar mode, it is –VREF/2 to +VREF/2 (e.g., –2.048V to +2.048V). The mode is software-selectable per conversion and requires no hardware reconfiguration.
How does the VL pin affect MAX1204AEAP+T digital outputs?
The VL pin directly sets the high-level output voltage (VOH) and low-level output voltage (VOL) of DOUT and SSTRB. When VL = 3.3V, outputs swing rail-to-rail between 0V and 3.3V-enabling direct connection to 3.3V CMOS logic without level shifters. VOH minimum is VL – 0.5V; VOL maximum is 0.4V, per datasheet timing specs.
Can MAX1204AEAP+T operate with only a +5V supply, or does it require dual ±5V?
MAX1204AEAP+T operates with either a single +5V analog supply (VDD = +5V, VSS = GND) for unipolar applications or dual ±5V supplies (VDD = +5V, VSS = –5V) for true bipolar input ranges. The device's absolute maximum ratings and electrical characteristics are specified for both configurations, and no external components change between modes.
What is the purpose of the SSTRB pin on MAX1204AEAP+T?
SSTRB (Serial Strobe) provides timing synchronization: in internal clock mode, it goes low at conversion start and high at completion (≤10µs pulse width); in external clock mode, it pulses high for one SCLK period before the MSB appears on DOUT. This signal allows TMS320-family DSPs to precisely align data capture without polling or fixed delays.
MAX1204AEAP+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 20-SSOP (0.209", 5.30mm Width)
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Active
- 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:
- -40°C ~ 85°C
- Supplier Device Package:
- 20-SSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX1204AEAP+T FAQ
1.How can I place an order for MAX1204AEAP+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1204AEAP+T 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 MAX1204AEAP+T reliable?
The price and inventory of MAX1204AEAP+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1204AEAP+T is usually 5 days.
3.What payment methods are accepted for MAX1204AEAP+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1204AEAP+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1204AEAP+T?
MAX1204AEAP+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1204AEAP+T 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 MAX1204AEAP+T?
For technical support, including MAX1204AEAP+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1204AEAP+T requirements.
6.How does Aetrix verify that MAX1204AEAP+T is sourced from the original manufacturer or authorized distributors?
All MAX1204AEAP+T 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 MAX1204AEAP+T meets industry standards.
7.What is the process for return or replacement of MAX1204AEAP+T?
All MAX1204AEAP+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX1204AEAP+T, 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 MAX1204AEAP+T part is unused and in its original packaging.
Return procedure for MAX1204AEAP+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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