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Analog Devices Inc./Maxim Integrated MAX1104EUA+
- Part No.:
- MAX1104EUA+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- CODECS
- Package:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Datasheet:
-
MAX1104EUA+.pdf
- Description:
- IC CODEC 8BIT 8-UMAX
- Quantity:
- Payment:
- Shipping:
Inventory:2,620
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Product details
Overview
MAX1104EUA+ from Maxim Integrated is an 8-bit dual-function CODEC integrating a successive-approximation ADC and R-2R ladder DAC in a single 8-pin µMAX package, operating from +2.7V to +5.5V supply, featuring ratiometric conversion referenced to VDD, ±1 LSB INL for both converters, 48dB SINAD (ADC), 55dB SFDR (DAC), and SPI/QSPI/MICROWIRE-compatible 4-wire serial interface - used for analog I/O expansion in low-cost microcontroller systems.
For engineers reviewing the MAX1104EUA+ datasheet, MAX1104EUA+ pinout, MAX1104EUA+ application, or MAX1104EUA+ equivalent, this page delivers verified electrical specs, functional context for µC interfacing, real-world use cases including power-supply supervision and voice playback, and validated alternative parts with documented technical distinctions.
Technical Context
The MAX1104EUA+ implements a SAR ADC with integrated track-and-hold and a double-buffered R-2R DAC, both sharing a single 6MHz 4-wire serial interface. Its ratiometric architecture ties full-scale range directly to VDD, eliminating need for external reference while maintaining ±1 LSB INL across 2.7V–5.5V operation.
Control logic supports independent or simultaneous enable/disable of ADC, DAC, and internal clock via 8-bit configuration word; shutdown modes include 1µA full-off state and 18µA standby with reference active. Wake-up time from full shutdown is 3µs for ADC and 10µs for DAC.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 8-bit for both ADC and DAC - supports 256-level quantization suitable for basic sensor readout and audio playback. |
| ADC INL / DAC INL | ±1 LSB max - ensures monotonic transfer function and predictable code transitions without missing codes. |
| SINAD / SFDR | 48 dB (ADC), 55 dB (DAC) - defines usable dynamic range for voice-band signals up to ~10kHz. |
| Supply Range | +2.7V to +5.5V - enables direct compatibility with 3.3V and 5V µC systems without level-shifting. |
| Interface Speed | 6 MHz SPI/QSPI/MICROWIRE - allows >25 ksps throughput in continuous mode with minimal µC overhead. |
| Shutdown Current | 1 µA - reduces system power during idle periods while preserving fast wake-up capability. |
| Package | 8-pin µMAX (3mm × 3mm) - provides compact footprint for space-constrained embedded designs. |
Pinout & Package
MAX1104EUA+ is housed in an 8-pin µMAX package (3mm × 3mm, 0.5mm pitch), thermally enhanced with exposed pad, rated for -40°C to +85°C operation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1 VDD | Positive supply input | Primary power rail; also serves as ratiometric reference source for both ADC and DAC. |
| 2 GND | Ground reference | Analog and digital common return; requires low-impedance connection to minimize noise coupling. |
| 3 AIN | ADC analog input | Single-ended input accepting 0V to VDD range; no internal mux - unlike MAX1102/1103, C1 bit is fixed to 0. |
| 4 OUT | DAC analog output | Rail-to-rail buffered voltage output (0V to VDD − 0.1V); settles to ±1/2 LSB in 11 µs with 10kΩ//100pF load. |
| 5 CS | Chip select input | Active-low enable for serial interface; high state places DOUT in high-impedance mode. |
| 6 SCLK | Serial clock input | Controls data latching (DIN on rising edge) and output timing (DOUT on falling edge). |
| 7 DOUT | ADC digital output | Three-state serial output delivering 8-bit conversion result; only active when CS is low. |
| 8 DIN | DAC digital input / control word input | Accepts 8-bit control byte followed by 8-bit DAC data; ignored when CS is high. |
Key Features
| Feature | Design Value |
|---|---|
| Ratiometric VDD-referenced conversion | Eliminates external reference component and matching drift; full-scale scales linearly with supply voltage. |
| Independent converter shutdown control | E0/E1 bits allow selective disabling of DAC or ADC to reduce current to 0.25–0.66 mA depending on active path. |
| Fast 3µs ADC wake-up from full shutdown | Enables burst-mode sampling in battery-powered systems without sacrificing responsiveness. |
| Internal track-and-hold with 3.5µs acquisition time | Removes need for external sample-hold circuitry; supports accurate digitization of signals up to 2.5MHz bandwidth. |
| Logic-level agnostic digital interface | Accepts 3V- or 5V-compatible logic thresholds regardless of VDD, simplifying interconnect with mixed-voltage µCs. |
Applications
| Power-Supply Supervision | Voice Recording & Playback |
|---|---|
|
Use Scenario: Monitoring VDD stability in portable MCU-based devices to trigger brownout warnings or safe shutdown. IC Role / Device Role / Timing Role: ADC digitizes analog supply rail; DAC optionally generates alert tones or bias voltages. Use Value: Enables precise threshold detection using same VDD-referenced full-scale as system supply - no calibration drift vs. rail variation. |
Use Scenario: Adding low-fidelity voice recording and playback capability to resource-limited microcontrollers. IC Role / Device Role / Timing Role: ADC captures microphone signal at ≤25ksps; DAC reconstructs audio to speaker/headphone driver. Use Value: 48dB SINAD and 55dB SFDR support intelligible speech reproduction within 3kHz bandwidth. |
| Analog I/O Expansion | Analog System Signal Supervision |
|
Use Scenario: Extending GPIO-limited MCUs with analog sensing (temperature, light, potentiometer) and actuator control (LED dimming, small solenoid). IC Role / Device Role / Timing Role: ADC reads sensor outputs; DAC drives analog inputs of legacy subsystems or calibration references. Use Value: Single 8-pin IC replaces discrete ADC+DAC+reference solution, reducing BOM count and PCB area. |
Use Scenario: Real-time monitoring of analog control signals (e.g., motor current feedback, battery voltage, sensor bias) in industrial controllers. IC Role / Device Role / Timing Role: ADC samples critical analog nodes; DAC injects test signals or adjusts reference points. Use Value: ±1 LSB INL ensures repeatable measurement across temperature and supply variations. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar dual-function CODEC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| MAX1102EUA+ | Fixed +2.0V internal reference; supply range limited to +2.7V to +3.6V; includes VDD/2 power-sense mux. | Better suited for stable 3.3V systems requiring absolute voltage accuracy; not ratiometric. | Select when reference stability matters more than supply flexibility - e.g., precision sensor front-ends. |
| ADS7816U | 8-bit SAR ADC only (no DAC); 200ksps max; 2.7V–5.25V supply; SPI interface; 10-pin MSOP package. | Requires separate DAC for bidirectional analog I/O; higher speed but no integrated signal generation. | Choose when higher sampling rate is needed and DAC functionality is implemented elsewhere. |
Compared with MAX1102EUA+, MAX1104EUA+ trades fixed-reference accuracy for wider supply adaptability and eliminates mux complexity; compared with ADS7816U, it sacrifices speed and adds integrated DAC functionality at lower total component count.
Availability
MAX1104EUA+ is available at Aetrix Electronics and suitable for analog I/O expansion, power-supply supervision, and voice-band signal processing requiring stable component supply across industrial, medical, and consumer electronics programs.
Supply support for MAX1104EUA+ 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 embedded applications.
The MAX110x family targets cost-sensitive microcontroller systems needing compact, low-power analog I/O - optimized for simplicity, minimal external components, and seamless SPI integration.
FAQ
What is the reference configuration of the MAX1104EUA+?
The MAX1104EUA+ uses a ratiometric reference architecture where both the ADC and DAC full-scale ranges are directly tied to VDD. Unlike MAX1102/MAX1103, it does not include an internal +2V or +4V reference; instead, VDD serves as the reference voltage source, making its conversion scale proportional to supply voltage. This eliminates external reference components but requires stable VDD for absolute accuracy.
Does the MAX1104EUA+ support power-supply monitoring like the MAX1102/MAX1103?
No, the MAX1104EUA+ does not support VDD/2 monitoring. Its ADC input mux is fixed to AIN only (C1 bit is hardwired to 0 per datasheet), removing the power-sense capability present in MAX1102/MAX1103. For supply monitoring, external resistive division into AIN is required, and accuracy will depend on resistor tolerance and temperature drift.
What is the maximum achievable sampling rate for the MAX1104EUA+ ADC?
The MAX1104EUA+ ADC achieves up to 25 ksps in continuous conversion mode, limited by its 36 µs conversion time and 6 MHz serial interface timing. At 25 ksps, the device consumes 0.5 mA (typical) with ADC enabled and DAC disabled at +3V supply. Higher rates are not supported due to internal SAR timing constraints.
Can the MAX1104EUA+ operate with a 5V microcontroller SPI interface?
Yes, the MAX1104EUA+ digital inputs (CS, SCLK, DIN) accept logic-high thresholds down to VDD × 0.7 and logic-low up to VDD × 0.3, supporting interoperability with both 3.3V and 5V µC SPI peripherals without level shifters - even when VDD is 2.7V or 5.5V. Output drive strength meets 1.0 mA sink/source requirements at specified VOH/VOL levels.
What is the DAC output swing specification for the MAX1104EUA+?
The MAX1104EUA+ DAC output (pin 4, OUT) swings rail-to-rail from 0 V to VDD − 0.1 V under 10 kΩ load, with guaranteed monotonicity and ±1 LSB INL. Settling time to ±1/2 LSB is 11 µs with 10 kΩ//100 pF load, and slew rate is 1.2 V/µs (typ). No external buffer is required for standard line-driving tasks.
MAX1104EUA+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 8-TSSOP, 8-MSOP (0.118", 3.00mm Width)
- Packaging:
- Tube
- Product Status:
- Obsolete
- Type:
- General Purpose
- Data Interface:
- -
- Resolution (Bits):
- 8 b
- Number of ADCs / DACs:
- 1 / 1
- Sigma Delta:
- No
- S/N Ratio, ADCs / DACs (db) Typ:
- -
- Dynamic Range, ADCs / DACs (db) Typ:
- 59 / 55
- Voltage - Supply, Analog:
- 2.7V ~ 5.5V
- Voltage - Supply, Digital:
- 2.7V ~ 5.5V
- Operating Temperature:
- -40°C ~ 85°C
- Grade:
- -
- Qualification:
- -
- Mounting Type:
- Surface Mount
- Supplier Device Package:
- 8-uMAX/uSOP
MAX1104EUA+ FAQ
1.How can I place an order for MAX1104EUA+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1104EUA+ 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 MAX1104EUA+ reliable?
The price and inventory of MAX1104EUA+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1104EUA+ is usually 5 days.
3.What payment methods are accepted for MAX1104EUA+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1104EUA+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1104EUA+?
MAX1104EUA+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1104EUA+ 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 MAX1104EUA+?
For technical support, including MAX1104EUA+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1104EUA+ requirements.
6.How does Aetrix verify that MAX1104EUA+ is sourced from the original manufacturer or authorized distributors?
All MAX1104EUA+ 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 MAX1104EUA+ meets industry standards.
7.What is the process for return or replacement of MAX1104EUA+?
All MAX1104EUA+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX1104EUA+, 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 MAX1104EUA+ part is unused and in its original packaging.
Return procedure for MAX1104EUA+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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