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Analog Devices Inc./Maxim Integrated MAX1396ETB+T
- Part No.:
- MAX1396ETB+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 10-WFDFN Exposed Pad
- Datasheet:
-
MAX1396ETB+T.pdf
- Description:
- IC ADC 12BIT SAR 10TDFN
- Quantity:
- Payment:
- Shipping:
Inventory:2,626
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Product details
Overview
MAX1396ETB+T from Maxim Integrated is a 12-bit, 312.5ksps successive-approximation register (SAR) analog-to-digital converter with dual single-ended inputs (AIN1/AIN2), operating from +1.5V to +3.6V supply and requiring an external reference (0.6V to VDD). It delivers ±1 LSB INL/DNL, 70dB SINAD at 75kHz, and <1µA shutdown current. Designed for portable battery-powered data acquisition, it enables compact, low-power sensor interfacing in space-constrained medical and industrial instruments.
For engineers reviewing the MAX1396ETB+T datasheet, MAX1396ETB+T pinout, MAX1396ETB+T application, or MAX1396ETB+T equivalent, key selection criteria include its dual-channel single-ended input architecture, 10-pin TDFN package with exposed pad, SPI/QSPI/MICROWIRE/DSP-compatible 3-wire serial interface, and guaranteed no missing codes over –40°C to +85°C.
Technical Context
The MAX1396ETB+T implements a track-and-hold circuit followed by a 12-bit SAR core, with channel selection controlled via the CH1/CH2 digital input. Conversion is initiated by a falling edge on CS, with acquisition completed on the third SCLK falling edge and full 12-bit result output across 16 SCLK cycles (MSB-first, straight binary format).
Its analog front-end supports 0–VREF input range per channel, 16pF input capacitance, and 500Ω equivalent differential input resistance. Dynamic performance is maintained up to 150kHz full-linear bandwidth, with anti-aliasing recommended for signals beyond Nyquist due to 4MHz full-power bandwidth.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - delivers 4096 discrete output codes for precise sensor digitization |
| Sampling Rate | 312.5ksps - supports real-time monitoring of fast transients in portable instrumentation |
| INL / DNL | ±1 LSB - ensures monotonicity and linearity critical for closed-loop control feedback |
| SINAD | 70 dB at 75kHz - enables accurate measurement of medium-frequency analog signals |
| Supply Voltage | +1.5V to +3.6V - compatible with unregulated two-cell alkaline/NiMH or single LiMnO₂ coin cells |
| Shutdown Current | <1 µA - extends battery life in intermittent-sampling applications like dataloggers |
| Reference Range | 0.6V to VDD - allows flexible scaling using internal LDOs or precision external references |
| Operating Temp | –40°C to +85°C - qualified for industrial and medical environments without derating |
Pinout & Package
The MAX1396ETB+T is housed in a 3mm × 3mm, 10-pin TDFN-EP package with exposed pad (not internally connected; recommended to tie to GND). Pin 1 is marked by top-side dot; pin numbering follows standard counter-clockwise convention starting from the dot corner.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| VDD (Pin 1) | Positive supply input | Accepts 1.5V–3.6V; requires local 0.1µF bypass to GND for noise immunity |
| AIN2 (Pin 2) | Analog input channel 2 | Single-ended input referenced to GND; 0–VREF range; 16pF input capacitance |
| AIN1 (Pin 3) | Analog input channel 1 | Single-ended input referenced to GND; identical specs to AIN2; channel selected via CH1/CH2 |
| GND (Pin 4) | Analog/digital ground | Common reference for analog inputs, reference, and digital I/O; star-ground connection recommended |
| REF (Pin 5) | External reference input | 0.6V–(VDD+0.05V); must be bypassed with 0.1µF capacitor; sets full-scale range for both channels |
| CH1/CH2 (Pin 6) | Channel select input | Logic high = AIN2 active; logic low = AIN1 active; must be stable before first SCLK after CS fall |
| OE (Pin 7) | Active-low output enable | Pulling high disables DOUT (high-Z); tying to CS enables SPI-compatible operation |
| CS (Pin 8) | Active-low chip select | Falling edge initiates power-up, acquisition, and conversion sequence; asynchronous reset |
| DOUT (Pin 9) | Serial data output | MSB-first, straight-binary 12-bit result preceded by four zeros; transitions on SCLK falling edge |
| SCLK (Pin 10) | Serial clock input | 0.1–5MHz clock; controls conversion timing, sampling instant, and data clock-out; 16 cycles per result |
Key Features
| Feature | Design Value |
|---|---|
| Dual single-ended input channels | Enables sequential sampling of two independent sensors (e.g., temperature + pressure) without external MUX |
| AutoShutdown between conversions | Reduces average current to 3.1µW at 1ksps (1.8V), optimizing energy per sample in duty-cycled systems |
| Channel-to-channel matching | ±0.1 LSB offset/gain error ensures consistent scaling across AIN1 and AIN2 for ratiometric measurements |
| SPI/QSPI/MICROWIRE/DSP compatibility | Eliminates need for protocol translation logic; supports direct interface to common microcontrollers and DSPs |
| Low-voltage operation down to +1.5V | Permits direct connection to aging alkaline/NiMH batteries or CR2032 coin cells without voltage regulation |
| No missing codes over temperature | Guarantees monotonic response across –40°C to +85°C, essential for safety-critical medical instrument feedback |
Applications
| Portable Datalogging | Data Acquisition |
|---|---|
|
Use Scenario: Battery-powered environmental sensor node logging temperature, humidity, and light intensity at 100Hz intervals. IC Role / Device Role / Timing Role: Dual-channel ADC digitizing two analog sensor outputs sequentially, synchronized to microcontroller's low-power timer interrupt. Use Value: 3.1µW idle power at 1ksps and 10-pin TDFN footprint minimize PCB area and extend CR2032 battery life beyond 12 months. |
Use Scenario: Modular industrial I/O module acquiring analog signals from multiple field transmitters (4–20mA loops with conditioning). IC Role / Device Role / Timing Role: Precision front-end ADC providing 12-bit resolution and ±1 LSB linearity for calibrated process variable reporting. Use Value: Channel-to-channel gain matching (±0.1 LSB) enables accurate differential measurements across sensor pairs without per-channel calibration. |
| Medical Instruments | Battery-Powered Instruments |
|
Use Scenario: Handheld pulse oximeter measuring photodiode currents from red/IR LEDs with simultaneous dual-channel sampling. IC Role / Device Role / Timing Role: Low-noise, low-drift ADC capturing synchronized analog waveforms for SpO₂ calculation algorithms. Use Value: 70dB SINAD at 75kHz supports clean AC-coupled photoplethysmography signal capture without additional filtering overhead. |
Use Scenario: Portable multimeter with auto-ranging analog front-end feeding two independent signal paths (DCV/ACV). IC Role / Device Role / Timing Role: Dual-input SAR ADC enabling rapid switching between measurement modes while maintaining traceable accuracy. Use Value: External reference support (0.6V–VDD) allows use of ultra-stable 1.2V bandgap reference for <±0.1% full-scale error across battery discharge. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7822U | 8-pin SOIC; 200ksps max; internal reference only (2.5V); no channel select pin | Requires external reference buffer if non-2.5V scaling needed; single-input only - needs external mux for dual-channel | Choose for cost-sensitive, lower-speed designs where board space and external components are less constrained |
| AD7476ARTZ-REEL7 | 6-pin SOT-23; 1MSPS; single-ended input only; no CH1/CH2 control; 2.7–5.25V supply | Higher speed but incompatible with sub-2.7V battery operation; no native dual-input capability | Prefer when sampling rate >312.5ksps is required and system uses regulated 3.3V supply |
Compared with ADS7822U and AD7476ARTZ-REEL7, the MAX1396ETB+T uniquely combines dual single-ended inputs, 1.5V operation, and external reference flexibility in a 3×3mm package-making it optimal for ultra-low-power, multi-sensor portable instrumentation where supply headroom and PCB area are critical.
Availability
MAX1396ETB+T is available at Aetrix Electronics and suitable for portable datalogging, battery-powered medical devices, and industrial process monitoring requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX1396ETB+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 MAX1393/MAX1396 family was designed specifically for ultra-low-power, space-constrained data acquisition systems-emphasizing micropower operation, small-footprint packaging, and seamless integration with battery-powered microcontrollers.
FAQ
What is the maximum sampling rate supported by the MAX1396ETB+T?
The MAX1396ETB+T supports a maximum throughput rate of 312.5ksps, achieved with a 5MHz SCLK and 16 clock cycles per conversion (including power-up, acquisition, and conversion time). At this rate, the device consumes 710–800µA from a 3V supply, and maintains ±1 LSB INL/DNL and 70dB SINAD at 75kHz input frequency. Lower rates reduce current linearly-e.g., 100ksps draws 520–600µA at 1.6V.
How does the MAX1396ETB+T handle channel selection between AIN1 and AIN2?
The MAX1396ETB+T uses the CH1/CH2 pin (Pin 6) for channel selection: logic low selects AIN1, logic high selects AIN2. This signal must be stable for at least 10ns before the first SCLK rising edge after the CS falling edge to ensure valid conversion. The selected channel's input is sampled during the acquisition phase, and the 12-bit straight-binary result is clocked out on DOUT over 16 SCLK cycles.
Can the MAX1396ETB+T operate with a 1.5V supply and still meet all specifications?
Yes-the MAX1396ETB+T is fully specified from +1.5V to +3.6V. At VDD = 1.5V and VREF = 1.5V, it achieves ±1 LSB INL/DNL, 70dB SINAD at 75kHz, and 312.5ksps throughput. Power consumption drops to 176–200µA at 100ksps, and shutdown current remains below 1µA. All DC and dynamic specs in the Electrical Characteristics table are guaranteed across the full supply range.
What is the purpose of the exposed pad (EP) on the MAX1396ETB+T TDFN package?
The exposed pad on the MAX1396ETB+T is not internally connected to any die function. Maxim recommends connecting it to the PCB's GND plane to improve thermal dissipation and reduce ground impedance-critical for maintaining analog performance in noisy mixed-signal layouts. Leaving it unconnected does not impair functionality but may slightly degrade thermal resistance and EMI immunity.
Does the MAX1396ETB+T support bipolar input mode like the MAX1393?
No-the MAX1396ETB+T supports only unipolar input mode (0 to VREF) on both AIN1 and AIN2. Bipolar mode (±VREF/2) with UNI/BIP pin control is exclusive to the MAX1393 variant. The MAX1396ETB+T's CH1/CH2 pin replaces UNI/BIP, and its output data is always in straight-binary format-no two's complement encoding is implemented or supported.
MAX1396ETB+T Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 10-WFDFN Exposed Pad
- Packaging:
- Tape & Reel (TR)
- Product Status:
- Obsolete
- Number of Bits:
- 12
- Sampling Rate (Per Second):
- 312.5k
- Number of Inputs:
- 2
- Input Type:
- Single Ended
- Data Interface:
- SPI, DSP
- Configuration:
- MUX-S/H-ADC
- Ratio - S/H:ADC:
- 1:1
- Number of A/D Converters:
- 1
- Architecture:
- SAR
- Reference Type:
- External
- Voltage - Supply, Analog:
- 1.5V ~ 3.6V
- Voltage - Supply, Digital:
- 1.5V ~ 3.6V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 10-TDFN (3x3)
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX1396ETB+T FAQ
1.How can I place an order for MAX1396ETB+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1396ETB+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 MAX1396ETB+T reliable?
The price and inventory of MAX1396ETB+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1396ETB+T is usually 5 days.
3.What payment methods are accepted for MAX1396ETB+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1396ETB+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1396ETB+T?
MAX1396ETB+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1396ETB+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 MAX1396ETB+T?
For technical support, including MAX1396ETB+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1396ETB+T requirements.
6.How does Aetrix verify that MAX1396ETB+T is sourced from the original manufacturer or authorized distributors?
All MAX1396ETB+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 MAX1396ETB+T meets industry standards.
7.What is the process for return or replacement of MAX1396ETB+T?
All MAX1396ETB+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX1396ETB+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 MAX1396ETB+T part is unused and in its original packaging.
Return procedure for MAX1396ETB+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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