My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX1202AEPP+
- Part No.:
- MAX1202AEPP+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 20-DIP (0.300", 7.62mm)
- Datasheet:
-
MAX1202AEPP+.pdf
- Description:
- IC ADC 12BIT SAR 20DIP
- Quantity:
- Payment:
- Shipping:
Inventory:4,585
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX1202AEPP+ from Maxim Integrated is a 12-bit, 8-channel serial analog-to-digital converter (ADC) designed for mixed 5V analog / 3V digital supply 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 MAX1202AEPP+ datasheet, MAX1202AEPP+ pinout, MAX1202AEPP+ application, or MAX1202AEPP+ equivalent, key selection criteria include its dual-supply operation (+5V analog / 3V–5.25V digital logic), software-configurable unipolar/bipolar input mode, 1.5mA operating current, and extended temperature range (–40°C to +85°C) supporting industrial instrumentation and medical devices.
Technical Context
The MAX1202AEPP+ employs 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 voltage range determined by internal 4.096V reference (±0.5 LSB INL at –40°C to +85°C).
Digital interface timing is synchronized to SCLK's rising/falling edges: DIN latches on SCLK rise, DOUT/SSTRB update on SCLK fall. The VL pin sets output logic levels (2.7V–5.25V), while SHDN enables two software-selectable power-down modes - reducing supply current to ≤10μA between conversions.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 12-bit - delivers 1 LSB = 1 mV full-scale step with 4.096V reference |
| INL (Integral Nonlinearity) | ±0.5 LSB - ensures <0.012% end-point linearity error over –40°C to +85°C |
| Sampling Rate | 133 ksps - supports real-time monitoring of 66.5 kHz signals via Nyquist-compliant sampling |
| Analog Supply | +5V ±5% (VDD) or ±5V (VDD/VSS) - compatible with legacy 5V sensor interfaces |
| Digital Logic Supply (VL) | 2.7V to 5.25V - enables direct interfacing with 3.3V or 5V microcontrollers without level shifters |
| Operating Current | 1.5 mA (active), ≤10 μA (power-down) - extends battery life in portable instruments |
| Reference | Internal 4.096V ±30 ppm/°C (MAX1202AE) - eliminates external reference component and layout area |
Pinout & Package
MAX1202AEPP+ is housed in a 20-pin plastic DIP (PDIP) package with 0.3-inch body width, RoHS-compliant and lead(Pb)-free per + suffix. Pin spacing is 0.1 inch; thermal resistance θJA = 90°C/W.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CH0–CH7 (Pins 1–8) | Analog input channels | Selectable as 8 single-ended or 4 pseudo-differential inputs; input protection clamps to VDD/VSS |
| VSS (Pin 9) | Negative analog supply | Accepts 0V (ground) or –5V ±5%; defines bipolar input common-mode range |
| SHDN (Pin 10) | Three-level shutdown control | Low = full power-down (≤10μA); open = external compensation; VDD = internal compensation |
| REF (Pin 11) | Reference buffer output / ADC reference input | Delivers 4.096V ±0.02V (typ) for MAX1202; disabled for external reference use |
| REFADJ (Pin 12) | Reference buffer gain adjustment | ±1.5% trim range; tie to VDD to disable internal reference amplifier |
| GND (Pin 13) | Analog ground / IN– for single-ended mode | Common return for analog circuitry; serves as reference for CH0–CH7 in unipolar mode |
| VL (Pin 14) | Digital output supply | Sets DOUT/SSTRB high-level voltage (2.7V–5.25V); decouples digital logic from analog VDD |
| DOUT (Pin 15) | Serial data output | MSB-first, SCLK-falling-edge aligned; high-impedance when CS = high |
| SSTRB (Pin 16) | Serial strobe output | Pulses high before MSB in external clock mode; indicates conversion start/end in internal mode |
| DIN (Pin 17) | Serial data input | Accepts 8-bit control byte (START, SEL, UNI/BIP, SGL/DIF, PD1/PD0) 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; 100kHz–2MHz compatible |
| VDD (Pin 20) | Positive analog supply | +5V ±5%; powers analog core, track/hold, and reference buffer |
Key Features
| Feature | Design Value |
|---|---|
| 8-channel multiplexer with track/hold | Supports sequential sampling across sensors without external sample-hold circuitry |
| Internal 4.096V reference with ±30 ppm/°C drift | Eliminates need for precision external reference and reduces BOM count in portable designs |
| Software-configurable unipolar/bipolar input mode | Single control-bit switch (UNI/BIP) adapts same hardware to 0–4.096V or ±2.048V signal ranges |
| 3V–5.25V programmable digital output levels (VL pin) | Enables direct interface to 3.3V FPGAs or 5V MCUs without level-shifting components |
| Two power-down modes (fast/full) | Reduces average current to <10μA in duty-cycled applications like handheld meters |
Applications
| Industrial Process Monitoring | Portable Medical Instrumentation |
|---|---|
Use Scenario: Continuous acquisition of 4–20mA loop signals, thermocouple outputs, and pressure transducer voltages in PLC I/O modules. IC Role / Device Role / Timing Role: Primary 12-bit ADC digitizing up to 8 analog sensor channels with simultaneous channel sequencing and internal reference stability. Use Value: ±0.5 LSB INL and ±30 ppm/°C reference drift ensure <0.02% measurement accuracy across –40°C to +85°C industrial environments. |
Use Scenario: Battery-powered ECG, pulse oximeter, or glucose meter requiring low-power, high-accuracy analog front-end. IC Role / Device Role / Timing Role: Low-current ADC converting biopotential signals with software-selectable bipolar mode for differential electrode inputs. Use Value: 1.5mA active current and ≤10μA power-down enable >100-hour battery life; 133ksps supports 50Hz/60Hz noise rejection via oversampling. |
| 5V/3V Mixed-Supply Data Loggers | Battery-Powered Test Equipment |
Use Scenario: Field-deployable environmental sensor node logging temperature, humidity, and gas concentration using legacy 5V sensors and modern 3.3V MCU. IC Role / Device Role / Timing Role: Bridge ADC providing level-shifted digital interface while maintaining analog integrity via separate VDD/VL supplies. Use Value: Independent VL pin (2.7V–5.25V) and 5V-tolerant digital inputs eliminate level translators; internal reference cuts calibration overhead. |
Use Scenario: Handheld multimeter or oscilloscope probe with auto-ranging, AC/DC coupling, and battery indicator. IC Role / Device Role / Timing Role: High-speed ADC capturing transient waveforms with 4.5MHz small-signal bandwidth and 12-bit resolution. Use Value: Track/hold acquisition time of 1.5μs and 133ksps throughput support accurate RMS and peak detection in sub-100ms response time. |
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 | 12-bit, 200ksps, single-supply 2.7–5.25V operation; no internal reference; SPI-only interface | Requires external 2.5V reference; better suited for fully 3V systems without 5V analog rails | Choose ADS7822U when system lacks +5V analog supply but needs higher speed and lower quiescent current (1.2mA) |
| MAX11126ETE+ | 12-bit, 500ksps, internal 2.048V reference, 10-pin TDFN; supports 1.8V–3.6V VL | Smaller footprint and lower power (0.9mA), but limited to 4-channel input and narrower temp range (–40°C to +85°C only) | Choose MAX11126ETE+ for space-constrained, ultra-low-power designs where 4-channel count suffices and 2.048V reference is acceptable |
Compared with ADS7822U and MAX11126ETE+, the MAX1202AEPP+ uniquely combines 5V analog compatibility, internal 4.096V reference, 8-channel MUX, and extended temperature support - making it optimal for industrial mixed-supply systems requiring minimal external components and guaranteed linearity over wide ambient conditions.
Availability
MAX1202AEPP+ is available at Aetrix Electronics and suitable for industrial process monitoring, portable medical instrumentation, 5V/3V mixed-supply data loggers, and battery-powered test equipment requiring stable component supply across extended temperature ranges.
Supply support for MAX1202AEPP+ 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 MAX1202AEPP+ belongs to Maxim's precision data-acquisition ADC family, engineered for systems requiring seamless integration between legacy 5V analog sensors and modern low-voltage digital controllers - with emphasis on reference stability, power efficiency, and robust mixed-supply operation.
FAQ
What is the operating temperature range for the MAX1202AEPP+?
The MAX1202AEPP+ is specified for the extended temperature range of –40°C to +85°C. This rating applies to all electrical characteristics including ±0.5 LSB INL, 1.5mA supply current, and 4.096V reference accuracy. The device maintains full functionality across this range without derating, making it suitable for industrial and automotive under-hood applications where ambient extremes are expected. The MAX1202AEPP+ uses the 'E' grade designation confirming this extended specification.
Does the MAX1202AEPP+ require an external reference capacitor?
Yes, the MAX1202AEPP+ requires a 4.7µF capacitor at the REF pin when operating in internal compensation mode - which is the default configuration for the MAX1202AEPP+. This capacitor stabilizes the internal 4.096V reference output and ensures ±0.5 LSB INL performance across temperature and load. The datasheet explicitly specifies 4.7µF for external compensation mode, and the MAX1202AEPP+'s 'AE' grade mandates this configuration for guaranteed specifications. Omitting it degrades reference stability and increases INL error beyond ±0.5 LSB.
How does the SHDN pin function on the MAX1202AEPP+?
The SHDN pin on the MAX1202AEPP+ provides three distinct operating states: pulling SHDN low activates full power-down mode (≤10μA supply current); leaving SHDN floating configures the reference buffer for external compensation (requiring 4.7µF at REF); and tying SHDN to VDD selects internal compensation mode. Unlike simple on/off control, this three-level design allows dynamic optimization of reference stability versus power consumption - a feature confirmed in the MAX1202AEPP+'s Pin Description table and Figure 10 timing diagrams.
Can the MAX1202AEPP+ interface directly with a 3.3V microcontroller?
Yes, the MAX1202AEPP+ interfaces directly with 3.3V microcontrollers via its VL pin, which sets digital output voltage levels (DOUT, SSTRB) to match the host logic supply. With VL = 3.3V, outputs swing from 0V to ~2.8V (VOH = VL – 0.5V), meeting 3.3V logic high thresholds. Its digital inputs (DIN, SCLK, CS, SHDN) tolerate 0–5.5V, so 3.3V MCU outputs drive them reliably without level shifters - a capability verified in the Absolute Maximum Ratings and Electrical Characteristics tables for the MAX1202AEPP+.
What is the maximum serial clock frequency supported by the MAX1202AEPP+?
The MAX1202AEPP+ supports a maximum serial clock (SCLK) frequency of 2.0 MHz in external clock mode, as confirmed in the Electrical Characteristics table under "External Clock Frequency Range". At 2MHz, the device achieves 133ksps sampling rate using 15 clock cycles per conversion. The timing diagram (Figure 6) and Table 2 control-byte format validate that all setup/hold times (e.g., tDS = 100ns, tDH = 0ns) are met at this rate. Exceeding 2MHz violates tCH/tCL minimum pulse widths and risks data corruption in the MAX1202AEPP+ serial interface.
MAX1202AEPP+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 20-DIP (0.300", 7.62mm)
- Packaging:
- Tube
- 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-PDIP
- Mounting Type:
- Through Hole
- Grade:
- -
- Qualification:
- -
MAX1202AEPP+ FAQ
1.How can I place an order for MAX1202AEPP+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1202AEPP+ 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 MAX1202AEPP+ reliable?
The price and inventory of MAX1202AEPP+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1202AEPP+ is usually 5 days.
3.What payment methods are accepted for MAX1202AEPP+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1202AEPP+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1202AEPP+?
MAX1202AEPP+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1202AEPP+ 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 MAX1202AEPP+?
For technical support, including MAX1202AEPP+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1202AEPP+ requirements.
6.How does Aetrix verify that MAX1202AEPP+ is sourced from the original manufacturer or authorized distributors?
All MAX1202AEPP+ 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 MAX1202AEPP+ meets industry standards.
7.What is the process for return or replacement of MAX1202AEPP+?
All MAX1202AEPP+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX1202AEPP+, 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 MAX1202AEPP+ part is unused and in its original packaging.
Return procedure for MAX1202AEPP+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX1202AEPP+ 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…
