My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX1202AEAP+T
- Part No.:
- MAX1202AEAP+T
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 20-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
MAX1202AEAP+T.pdf
- Description:
- IC ADC 12BIT SAR 20SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:4,228
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX1202AEAP+T from Maxim Integrated is a 12-bit, 8-channel serial analog-to-digital converter (ADC) designed for mixed 5V analog / 3V digital systems. It features an internal 4.096V reference, ±0.5 LSB INL (A-grade), 133ksps sampling rate, and SPI/MICROWIRE/TMS320-compatible 4-wire interface - enabling direct connection to low-voltage microcontrollers in battery-powered data acquisition.
For engineers reviewing the MAX1202AEAP+T datasheet, MAX1202AEAP+T pinout, MAX1202AEAP+T application, or MAX1202AEAP+T equivalent, key selection criteria include its dual-supply operation (±5V or +5V only), software-configurable unipolar/bipolar inputs, VL-pin-adjustable 2.7–5.25V digital output levels, and sub-10μA power-down current at reduced sampling rates.
Technical Context
The MAX1202AEAP+T uses successive-approximation architecture with integrated track/hold, supporting both internal clock (1.7MHz) and external clock (up to 2MHz) conversion modes. Its analog front-end accepts 8 single-ended or 4 pseudo-differential inputs, with input common-mode range spanning VSS to VDD and ±0.5 LSB channel-to-channel offset matching.
Digital interface timing is fully synchronous: control bytes shift in on SCLK rising edge; conversion results shift out on SCLK falling edge in MSB-first format. The SHDN pin enables three-level shutdown (full power-down, fast power-down, or operational), and automatic wake-up occurs on serial interface access.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - delivers 1:4096 full-scale quantization granularity for precision measurement |
| INL (A-grade) | ±0.5 LSB - ensures monotonicity and <0.012% full-scale linearity error across temperature |
| Sampling Rate | 133ksps - supports real-time capture of signals up to ~66kHz via Nyquist-compliant sampling |
| Reference | Internal 4.096V ±30ppm/°C - eliminates external reference component and simplifies layout |
| Supply Current | 1.5mA operating / 2μA full power-down - enables energy-efficient operation in portable instrumentation |
| Digital I/O Voltage | VL-pin programmable (2.7–5.25V) - allows native interfacing with 3V, 3.3V, or 5V logic without level shifters |
| Input Configuration | 8 single-ended or 4 pseudo-differential channels - provides flexible signal routing for multi-sensor systems |
Pinout & Package
MAX1202AEAP+T is housed in a 20-pin SSOP package (body width 0.209", JEDEC MO-153), RoHS-compliant and lead(Pb)-free.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CH0–CH7 (Pins 1–8) | Analog input multiplexer channels | Selectable as single-ended (vs. GND) or pseudo-differential pairs; input protection clamps to VSS/VDD |
| VSS (Pin 9) | Negative supply rail | Accepts 0V (single-supply) or –5V ±5% (dual-supply); defines bipolar input range center |
| SHDN (Pin 10) | Three-state shutdown control | Pull low → 10μA shutdown; leave open → external compensation mode; tie to VDD → internal compensation |
| REF (Pin 11) | Reference buffer output / ADC reference input | Delivers 4.096V (MAX1202) or accepts external VREF; buffered to drive 4.7μF bypass capacitor |
| REFADJ (Pin 12) | Reference buffer gain adjustment | Tie to VDD to disable internal buffer; adjust ±1.5% for fine calibration of REF output |
| GND (Pin 13) | Analog ground / IN– for single-ended mode | Common return for analog circuitry; serves as reference for CH0–CH7 in unipolar single-ended conversions |
| VL (Pin 14) | Digital output supply | Sets DOUT/SSTRB high-level voltage (2.7–5.25V); decouples digital logic from analog VDD noise |
| DOUT (Pin 15) | Serial data output | 3-state, MSB-first, clocked on SCLK falling edge; high-impedance when CS = high |
| SSTRB (Pin 16) | Serial strobe output | Indicates conversion start (internal clock) or MSB decision timing (external clock); synchronizes host read timing |
| DIN (Pin 17) | Serial data input | Accepts 8-bit control byte (channel, mode, power-down); sampled on SCLK rising edge |
| CS (Pin 18) | Active-low chip select | Enables serial interface; disables DOUT/SSTRB outputs when high |
| SCLK (Pin 19) | Serial clock input | Drives data transfer and (in external mode) conversion timing; 50% duty cycle required |
| VDD (Pin 20) | Positive analog supply | +5V ±5%; powers analog core, reference buffer, and multiplexer; absolute max = +6V |
Key Features
| Feature | Design Value |
|---|---|
| Internal 4.096V reference with ±30ppm/°C drift (MAX1202AE) | Eliminates external reference IC and associated layout complexity while maintaining <±1 LSB gain error over –40°C to +85°C |
| VL-pin programmable digital output voltage (2.7–5.25V) | Enables direct interfacing with 3V, 3.3V, or 5V microcontrollers without level-shifting circuitry or risk of overvoltage damage |
| Software-selectable unipolar/bipolar and single-ended/differential inputs | Allows runtime reconfiguration of input range and topology via 8-bit control byte - no hardware changes needed |
| Three power-down modes with automatic wake-up | Reduces average supply current to <10μA between conversions; wake-up triggered by CS assertion or serial activity |
| 4-wire SPI/MICROWIRE/TMS320-compatible interface | Integrates seamlessly with standard MCU peripherals using CPOL=0/CPHA=0 configuration - no glue logic required |
| Channel-to-channel offset matching ±0.1 LSB | Ensures consistent baseline across all 8 inputs - critical for multi-channel sensor calibration and ratiometric measurements |
Applications
| Medical Instrumentation | Battery-Powered Data Loggers |
|---|---|
Use Scenario: Portable ECG monitor acquiring 8-lead biopotential signals with simultaneous analog front-end conditioning. IC Role / Device Role / Timing Role: Primary ADC digitizing amplified, filtered analog inputs; synchronized to low-power MCU via SPI with VL = 3.3V. Use Value: Internal 4.096V reference ensures stable full-scale accuracy across body-temperature variations; 2μA shutdown extends battery life during inter-beat intervals. |
Use Scenario: Environmental sensor node measuring temperature, humidity, and pressure using multiple analog sensors. IC Role / Device Role / Timing Role: Central 8-channel ADC performing scheduled burst sampling; powered from coin-cell or Li-ion with dynamic VL = 3.0V. Use Value: Software-selectable unipolar/bipolar mode accommodates both ratiometric bridge sensors and thermocouple inputs; 133ksps supports oversampling for noise reduction. |
| Industrial Process Monitoring | Automated Test Equipment (ATE) |
Use Scenario: PLC analog input module monitoring 4–20mA current loops and 0–10V transducer outputs in factory automation. IC Role / Device Role / Timing Role: High-accuracy ADC with ±5V dual-supply support; configured for differential inputs to reject common-mode noise on long cables. Use Value: ±0.5 LSB INL and ±0.1 LSB channel-to-channel offset matching ensure traceable measurement integrity across all channels without per-channel calibration. |
Use Scenario: Benchtop multimeter or signal analyzer requiring fast, repeatable DC and AC voltage measurements. IC Role / Device Role / Timing Role: Precision ADC in acquisition path; driven by external 2MHz clock for deterministic 133ksps sampling; SSTRB used for trigger synchronization. Use Value: 70dB SINAD and 80dB SFDR enable accurate RMS and harmonic analysis of 10kHz test tones; small-signal bandwidth of 4.5MHz supports transient capture. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 12-bit serial ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7822U | Single-supply only (+2.7–5.25V); no internal reference; 1MSPS max; 8-pin SOIC | Requires external reference and level-shifting for 5V analog systems; better suited for ultra-low-power, single-rail embedded designs | Choose ADS7822U when system operates entirely at 3.3V and board space is constrained - but verify external reference stability meets ±0.5 LSB INL requirement. |
| MAX11126ETE+ | 16-bit resolution; internal 4.096V reference; 500ksps; 16-pin TQFN; SPI-only interface | Higher resolution and speed, but larger package and higher power (2.5mA active); lacks SHDN pin and VL programmability | Choose MAX11126ETE+ when 16-bit precision is mandatory and digital interface is strictly SPI - but redesign PCB for TQFN and accept fixed 3.3V digital I/O. |
Compared with ADS7822U and MAX11126ETE+, the MAX1202AEAP+T uniquely balances A-grade 12-bit linearity, dual-supply flexibility, VL-programmable I/O, and integrated reference in a compact SSOP - making it optimal for cost-sensitive, mixed-voltage industrial and portable instrumentation where layout simplicity and thermal stability are critical.
Availability
MAX1202AEAP+T is available at Aetrix Electronics and suitable for medical instrumentation, battery-powered data loggers, and industrial process monitoring requiring stable component supply across extended temperature ranges (–40°C to +85°C).
Supply support for MAX1202AEAP+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 MAX1202/MAX1203 product line was engineered for precision data acquisition in mixed 5V/3V systems - delivering integrated reference, flexible power modes, and robust serial interfacing to reduce design complexity in portable and harsh-environment instrumentation.
FAQ
What is the operating temperature range for the MAX1202AEAP+T?
The MAX1202AEAP+T is specified for the extended temperature range of –40°C to +85°C. This rating is confirmed in the Ordering Information table and Electrical Characteristics section of the official datasheet, where parameters like INL, offset error, and gain error are guaranteed across this full range for the 'E' grade suffix.
Does the MAX1202AEAP+T require an external reference capacitor?
Yes, the MAX1202AEAP+T requires a 4.7μF capacitor at the REF pin when operating in external compensation mode - which is the default configuration when SHDN is left unconnected. This capacitor stabilizes the internal reference buffer output and is explicitly mandated in the datasheet's "Electrical Characteristics" and "Typical Operating Circuit" sections.
How does the SHDN pin function on the MAX1202AEAP+T?
The SHDN pin on the MAX1202AEAP+T provides three distinct operating states: pulling it low enables full power-down (≤10μA), leaving it unconnected configures external compensation mode for the reference buffer, and tying it to VDD selects internal compensation mode. This triple functionality is documented in the Pin Description table and Figure 12c of the datasheet.
Can the MAX1202AEAP+T interface directly with a 3.3V microcontroller SPI port?
Yes, the MAX1202AEAP+T interfaces directly with 3.3V microcontrollers by setting VL = 3.3V, which configures DOUT and SSTRB output high levels to 2.8V minimum. Its digital inputs (DIN, SCLK, CS, SHDN) are 5V-tolerant and accept 2.0V VIH, satisfying standard 3.3V CMOS logic thresholds without level shifters.
What is the maximum serial clock frequency supported by the MAX1202AEAP+T?
The MAX1202AEAP+T supports an external serial clock frequency of up to 2.0MHz, as specified in the "Electrical Characteristics" table under "External Clock Frequency Range". At this rate, the device achieves its rated 133ksps sampling rate with 15 clock cycles per conversion, and timing parameters like tDO and tDV remain within guaranteed limits.
MAX1202AEAP+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:
- 12
- 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:
- 2.7V ~ 5.25V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 20-SSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX1202AEAP+T FAQ
1.How can I place an order for MAX1202AEAP+T through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1202AEAP+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 MAX1202AEAP+T reliable?
The price and inventory of MAX1202AEAP+T are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1202AEAP+T is usually 5 days.
3.What payment methods are accepted for MAX1202AEAP+T?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1202AEAP+T transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1202AEAP+T?
MAX1202AEAP+T orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1202AEAP+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 MAX1202AEAP+T?
For technical support, including MAX1202AEAP+T datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1202AEAP+T requirements.
6.How does Aetrix verify that MAX1202AEAP+T is sourced from the original manufacturer or authorized distributors?
All MAX1202AEAP+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 MAX1202AEAP+T meets industry standards.
7.What is the process for return or replacement of MAX1202AEAP+T?
All MAX1202AEAP+T units undergo pre-shipment inspection (PSI). If there is an issue with MAX1202AEAP+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 MAX1202AEAP+T part is unused and in its original packaging.
Return procedure for MAX1202AEAP+T:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX1202AEAP+T Tags
-
ADC081C021CIMKX/NOPB
Texas Instruments
-
MCP3021A5T-E/OT
Microchip Technology
-
TLA2024IRUGR
Texas Instruments
-
MCP3221A5T-E/OT
Microchip Technology
-
MCP3221A5T-I/OT
Microchip Technology
-
MCP3221A4T-E/OT
Microchip Technology
-
MCP3221A6T-E/OT
Microchip Technology
-
MCP3221A0T-E/OT
Microchip Technology
-
MCP3221A1T-E/OT
Microchip Technology
-
ADC121S021CIMFX/NOPB
Texas Instruments
-
MCP3001-I/MS
Microchip Technology
-
MCP3001-I/SN
Microchip Technology
Tech Hub
A practical engineering guide to 3.3V and 5V logic compatibility, input thresholds, resistor dividers, translator ICs, MOSFET level shifting, I2C pull-ups, timing limits and power-sequencing risks.
The 74HC595 uses push-pull logic outputs, while the TPIC6B595 uses 50 V open-drain DMOS sinks for higher-power loads. This guide compares timing, current limits, 3.3 V interfacing, load wiring, thermal…
The 74HC595 converts serial data into eight stable parallel outputs. This guide covers pin functions, shift and storage timing, OE and MR behavior, drive-current limits, cascading, voltage compatibilit…
A technical comparison of level-sensitive latches and edge-triggered flip-flops, covering timing windows, setup and hold limits, master–slave operation, time borrowing, race-through, HDL inference and…
A D latch stores one bit while Enable controls when data can pass. This reference covers gate-level operation, truth tables, transparency, setup and hold timing, LE versus OE, common ICs and practical …
An SR latch stores one bit through cross-coupled feedback. This engineering reference covers NOR and NAND implementations, truth tables, forbidden-state recovery, gated operation, switch debouncing, fa…
Latch circuits retain one bit through feedback. This technical reference covers SR and D latches, truth tables, transparency, timing limits, latch-versus-flip-flop behavior, applications and common log…
An engineering guide to LED driver operation, constant-current and constant-voltage outputs, linear and switching topologies, dimming, IC selection, calculations, replacement compatibility, and fault c…
Operational amplifier guide covering op amp basics, feedback, ideal vs real op amps, common configurations, buffer circuits, offset, bias current, gain-bandwidth, slew rate, rail-to-rail limits and sel…
Jumper cables guide covering safe connection order, red and black clamp placement, final ground connection, cable gauge, length, clamp quality, copper vs CCA cables, jump starter comparison and battery…
