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Analog Devices Inc./Maxim Integrated MAX1132BCAP+
- Part No.:
- MAX1132BCAP+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 20-SSOP (0.209", 5.30mm Width)
- Datasheet:
-
MAX1132BCAP+.pdf
- Description:
- IC ADC 16BIT SAR 20SSOP
- Quantity:
- Payment:
- Shipping:
Inventory:1,189
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Product details
Overview
MAX1132BCAP+ from Maxim Integrated is a 16-bit, 200ksps successive-approximation analog-to-digital converter (ADC) with integrated +4.096V reference, input scaling network, and track/hold circuitry. It operates from a single +4.75V to +5.25V supply, accepts ±12V bipolar or 0–+12V unipolar inputs, and delivers ≥85dB SINAD at 5kHz with 1.5LSB INL (guaranteed ±2.5LSB). It targets high-precision industrial process control and medical instrumentation requiring stable DC accuracy and dynamic performance.
For engineers reviewing the MAX1132BCAP+ datasheet, MAX1132BCAP+ pinout, MAX1132BCAP+ application, or MAX1132BCAP+ equivalent, this page provides verified technical context, real-world design meaning for key specs, validated pin functions, confirmed application use cases, and two rigorously cross-checked alternative parts - all grounded in the official MAX1132/MAX1133 datasheet Rev 0 (8/01).
Technical Context
The MAX1132BCAP+ uses a successive-approximation register (SAR) architecture with internal track/hold and software-configurable unipolar/bipolar input ranges. Its input scaler maps ±12V signals to the internal DAC range while operating from a single 5V supply, eliminating need for external level-shifting circuitry.
It supports three clock modes: internal conversion clock (freeing MCU resources), external serial clock (SPI/QSPI/MICROWIRE-compatible), or on-demand calibration clock. Conversion timing is precisely controlled via SSTRB strobe output, enabling direct interfacing with TMS320 DSPs and deterministic data capture.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit with no missing codes - guarantees monotonicity and full code coverage across full input range. |
| Sampling Rate | 200ksps (bipolar mode) - supports Nyquist-limited acquisition of signals up to 100kHz without aliasing. |
| INL | ±2.5 LSB (max) - ensures ≤0.0038% full-scale linearity error for precision DC measurements. |
| SINAD | ≥85 dB at 5kHz - enables >13.9 effective bits (ENOB) for low-noise signal digitization. |
| Reference | +4.096V internal bandgap (±40mV tolerance) - provides stable, temperature-compensated scaling for ratiometric or absolute measurements. |
| Supply Current | 7.5mA (unipolar), 8.5–11mA (bipolar) - balances speed and power for battery-aware or thermally constrained designs. |
| Shutdown Current | 2.5µA - allows rapid power gating between conversions to extend system battery life. |
Pinout & Package
MAX1132BCAP+ is housed in a 20-pin SSOP (Shrink Small Outline Package) with 0.65mm pitch, JEDEC MO-153 compliant, footprint compatible with standard SSOP reflow profiles.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| AIN | Analog Input | Accepts ±12V bipolar or 0–+12V unipolar signals; includes ±16.5V fault protection active even during shutdown. |
| REF | Reference Output/Input | Delivers +4.096V internal reference or accepts external 3.0–4.2V reference when REFADJ = AVDD. |
| REFADJ | Bandgap Reference Adjust | Enables fine-tuning of internal reference voltage; tied to AVDD to disable buffer for external reference use. |
| P0–P2 | User-Programmable Outputs | CMOS push-pull outputs controlled by Control Byte bits 0–2; used to drive 8-channel muxes or PGAs without external logic. |
| SSTRB | Serial Strobe Output | Signals conversion start/end: low pulse in internal clock mode; one-cycle high pulse before MSB in external clock mode - synchronizes TMS320 DSP reads. |
| DOUT/DIN/SCLK/CS | SPI-Compatible Serial Interface | Full-duplex 3-wire interface (DIN/DOUT/SCLK) with chip select; requires no level shifters for 5V µP systems. |
Key Features
| Feature | Design Value |
|---|---|
| Software-selectable input range | Single Control Byte bit (UNI/BIP) switches between ±12V and 0–+12V operation - eliminates hardware jumpers or external gain-switching circuitry. |
| On-demand calibration | Internal circuitry corrects offset, gain, INL, and DNL errors via software command - maintains accuracy across temperature and supply drift without external equipment. |
| Three programmable logic outputs | P0–P2 pins directly control external signal conditioning components (e.g., 8:1 mux, PGA) - reduces BOM count and PCB area vs. discrete GPIO expanders. |
| Internal track/hold + scaler | Eliminates need for external op-amp front-end or level-shifter ICs when digitizing ±12V signals from a 5V-only system - simplifies analog signal chain design. |
| Low-power shutdown mode | 2.5µA quiescent current with fast wake-up - enables duty-cycled sampling in portable or energy-harvested sensor nodes. |
Applications
| Industrial Process Control | Medical Instrumentation |
|---|---|
Use Scenario: Monitoring multi-channel temperature, pressure, and flow sensors in PLC I/O modules with 0.1% full-scale accuracy requirements. IC Role / Device Role / Timing Role: Primary ADC converting conditioned analog sensor outputs into 16-bit digital values synchronized to PLC scan cycle via SSTRB strobe. Use Value: ±2.5LSB INL and 85dB SINAD ensure measurement repeatability across 40°C–70°C ambient range without recalibration between shifts. |
Use Scenario: Digitizing ECG, EEG, or patient vital sign waveforms in portable diagnostic devices requiring low noise and battery efficiency. IC Role / Device Role / Timing Role: High-fidelity analog front-end ADC capturing biopotential signals at 200ksps with internal reference stability eliminating external voltage reference ICs. Use Value: 2.5µA shutdown current extends battery life in handheld units; ±12V input range accommodates legacy transducer interfaces without signal conditioning. |
| Data-Acquisition Systems | Industrial I/O Modules |
Use Scenario: Modular DAQ cards acquiring synchronized multi-sensor data in test benches with SPI-based host communication. IC Role / Device Role / Timing Role: SPI-compatible ADC providing deterministic conversion timing via SSTRB, enabling precise timestamping of analog events. Use Value: Internal clock mode decouples conversion timing from host CPU clock - prevents jitter-induced spectral smearing in FFT-based analysis. |
Use Scenario: DIN-rail mounted I/O modules converting 4–20mA loop signals and thermocouple outputs in factory automation cabinets. IC Role / Device Role / Timing Role: Precision ADC with programmable P0–P2 outputs controlling external multiplexers to scan 8 analog channels per device. Use Value: Integrated 3-channel logic outputs eliminate need for separate GPIO expander ICs - reducing component count and board space by ~30%. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 16-bit SAR ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS8860IDRCT | 16-bit, 1MSPS, external reference only, no internal scaler; requires ±12V signal conditioning externally. | Better speed but lacks ±12V direct input support - needs op-amp front-end for same sensor types. | Select when sampling rate >200ksps is required and analog front-end redesign is acceptable. |
| AD7682BRMZ | 16-bit, 250ksps, internal reference (4.096V), no input scaler; max input ±5.5V (unbuffered) or ±10V (with external driver). | Higher speed and lower power (1.6mA), but cannot accept ±12V directly - requires external amplifier for full-scale industrial sensors. | Select when lower supply current is critical and input range can be limited to ±10V with external buffering. |
Compared with ADS8860IDRCT and AD7682BRMZ, MAX1132BCAP+ uniquely integrates ±12V input scaling, internal reference, and programmable logic outputs in a single 20-pin SSOP - reducing total solution size and bill-of-materials cost for industrial sensor interface applications where direct high-voltage digitization is required.
Availability
MAX1132BCAP+ is available at Aetrix Electronics and suitable for industrial process control, medical instrumentation, and data-acquisition systems requiring stable component supply, long-term lifecycle support, and traceable sourcing.
Supply support for MAX1132BCAP+ 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 industrial, medical, and communications applications.
The MAX1132/MAX1133 product line delivers high-resolution, high-speed SAR ADCs with integrated references and signal conditioning - engineered specifically for industrial sensor interfaces where ±12V direct input, low power, and minimal external components are critical.
FAQ
What input voltage ranges does the MAX1132BCAP+ support?
The MAX1132BCAP+ supports 0 to +12V (unipolar) and ±12V (bipolar) analog input ranges. This is enabled by its internal input scaling network, which allows direct digitization of industrial sensor outputs without external op-amps or level shifters. The input protection circuitry remains active even during shutdown, tolerating up to ±16.5V fault conditions.
Does the MAX1132BCAP+ require an external reference voltage?
No, the MAX1132BCAP+ includes an internal +4.096V bandgap reference with ±40mV initial accuracy and ±20ppm/°C tempco. An external reference can be used by disabling the internal buffer via REFADJ, but it is not required. The internal reference eliminates need for external reference ICs in most precision applications.
How does the MAX1132BCAP+ handle calibration?
The MAX1132BCAP+ features on-demand software calibration that corrects offset, gain, INL, and DNL errors. Calibration is initiated by writing a Control Byte with M1=0 and M0=1. It must be performed after power-up, reset, or significant ambient temperature change (>10°C) to maintain specified accuracy.
What is the function of the P0, P1, and P2 pins on the MAX1132BCAP+?
P0, P1, and P2 are user-programmable CMOS push-pull outputs controlled by bits 0–2 of the serial Control Byte. They retain their state during hardware/software shutdown and are commonly used to control external 8-channel analog multiplexers or programmable gain amplifiers - eliminating need for additional GPIO expanders.
Can the MAX1132BCAP+ interface directly with TMS320 DSPs?
Yes, the MAX1132BCAP+ includes a dedicated serial strobe output (SSTRB) designed for direct connection to TMS320 family DSPs. In internal clock mode, SSTRB goes low at conversion start and high at completion; in external clock mode, it pulses high before MSB output - enabling precise, hardware-synchronized data capture without polling.
MAX1132BCAP+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 20-SSOP (0.209", 5.30mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 200k
- Number of Inputs:
- 1
- Input Type:
- Single Ended
- Data Interface:
- SPI
- Configuration:
- 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
- Voltage - Supply, Digital:
- 5V
- Features:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 20-SSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX1132BCAP+ FAQ
1.How can I place an order for MAX1132BCAP+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1132BCAP+ 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 MAX1132BCAP+ reliable?
The price and inventory of MAX1132BCAP+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1132BCAP+ is usually 5 days.
3.What payment methods are accepted for MAX1132BCAP+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1132BCAP+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1132BCAP+?
MAX1132BCAP+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1132BCAP+ 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 MAX1132BCAP+?
For technical support, including MAX1132BCAP+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1132BCAP+ requirements.
6.How does Aetrix verify that MAX1132BCAP+ is sourced from the original manufacturer or authorized distributors?
All MAX1132BCAP+ 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 MAX1132BCAP+ meets industry standards.
7.What is the process for return or replacement of MAX1132BCAP+?
All MAX1132BCAP+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX1132BCAP+, 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 MAX1132BCAP+ part is unused and in its original packaging.
Return procedure for MAX1132BCAP+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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