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Analog Devices Inc./Maxim Integrated MAX1147BEUP
- Part No.:
- MAX1147BEUP
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MAX1147BEUP.pdf
- Description:
- MULTICHANNEL SERIAL, 14-BIT ADC
- Quantity:
- Payment:
- Shipping:
Inventory:4,039
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Product details
Overview
MAX1147BEUP from Maxim Integrated is a 14-bit, 4-channel single-ended or 2-channel differential successive-approximation ADC with integrated track/hold, internal +2.500V reference, and SPI/QSPI/MICROWIRE-compatible serial interface. It operates from a single +2.7V to +3.6V supply, achieves 116ksps throughput, and supports software-configurable unipolar/bipolar input modes - used in portable medical instruments and battery-powered data loggers.
For engineers reviewing the MAX1147BEUP datasheet, MAX1147BEUP pinout, MAX1147BEUP application, or MAX1147BEUP equivalent, key selection criteria include its -40°C to +85°C industrial temperature range, 20-pin TSSOP package, true-differential analog architecture, low-power operation (1.1mA at 116ksps), and hardware/software shutdown capability.
Technical Context
The MAX1147BEUP implements a 14-bit SAR architecture with dual switched-capacitor DACs and internal track/hold circuitry. Its analog front-end supports configurable single-ended or differential inputs via an on-chip multiplexer, with COM pin defining common-mode voltage for bipolar/unipolar operation.
Conversion is synchronized either by internal 2.1MHz clock or external serial clock up to 2.1MHz. The device uses 18 SCLK cycles per conversion in external mode and features SSTRB strobe output for DSP timing alignment, while maintaining ±2 LSB INL and <50ps aperture jitter over temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 14-bit - delivers 16,384 discrete output codes for high-precision sensor digitization |
| Sampling Rate | 116ksps - enables real-time capture of signals up to ~2MHz small-signal bandwidth |
| Supply Voltage | +2.7V to +3.6V - compatible with Li-ion and 3.3V system rails without level-shifting |
| Internal Reference | +2.500V ±20mV - stable reference eliminates need for external precision voltage source |
| INL / DNL | ±2 LSB / ±0.5 LSB - ensures monotonicity and accurate end-point calibration across full scale |
| Power Consumption | 1.1mA at 116ksps, 12µA at 1ksps - supports adaptive sampling to extend battery life |
| Operating Temp | -40°C to +85°C - qualified for industrial and automotive-adjacent embedded environments |
Pinout & Package
MAX1147BEUP is housed in a 20-pin TSSOP (U20-3) package with exposed pad for thermal performance. Pin functions are electrically validated per Maxim's official pin description table (Rev 2, Jan 2007).
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CH0–CH3 | Analog Input Channels | Four single-ended or two differential input pairs; software-selectable via control byte SEL[2:0] |
| COM | Common Input Reference | Sets zero-code point: AGND for unipolar, VREF/2 for bipolar mode |
| SHDN | Active-Low Shutdown Control | Pulling low reduces supply current to ≤0.3µA; automatic wake-up on CS/SCLK activity |
| REF | Reference Output/Input | Provides +2.500V internal reference or accepts external 1.5V–VDD reference |
| REFADJ | Bandgap Reference Adjust | Bypassed to AGND with 0.01µF; tie to VDD to disable internal reference buffer |
| DOUT / SSTRB / DIN / SCLK / CS | Serial Interface Signals | Full SPI-compatible 4-wire interface with strobe output for precise timing alignment |
| AGND / DGND | Analog & Digital Grounds | Separate ground pins minimize noise coupling between analog and digital domains |
Key Features
| Feature | Design Value |
|---|---|
| True-Differential Input Architecture | Supports simultaneous CH0–CH1, CH2–CH3 differential pairs with >85dB channel-to-channel crosstalk rejection |
| Configurable Input Modes | Software-selectable unipolar/bipolar and single-ended/differential operation via 8-bit control byte |
| Low-Power Adaptive Operation | Three power-down states: fast (120µA), full (300nA), and automatic wake-on-access serial interface |
| Integrated Reference Buffer | On-chip +2.500V reference with ±40ppm/°C tempco and 2mV load regulation over 0–0.2mA |
| High-Speed Serial Interface | 2.1MHz SCLK support with tDOV ≤80ns and SSTRB strobe for deterministic DSP synchronization |
Applications
| Portable Medical Monitoring | Battery-Powered Data Logging |
|---|---|
Use Scenario: Continuous acquisition of ECG, pulse oximetry, or impedance plethysmography signals in handheld diagnostic devices. IC Role / Device Role / Timing Role: Primary analog front-end ADC converting conditioned biopotential signals with 14-bit resolution and low THD (-96dB). Use Value: Internal +2.500V reference and 2.7–3.6V operation eliminate external regulators, reducing BOM count and PCB area. |
Use Scenario: Long-duration environmental sensing (temperature, humidity, gas) in remote field deployments. IC Role / Device Role / Timing Role: Low-power ADC sampling sensors at adaptive rates (1ksps–116ksps) with automatic shutdown between readings. Use Value: 12µA current draw at 1ksps extends lithium primary cell life to multi-year operation without recharge. |
| Industrial Process Control | Portable Test Equipment |
Use Scenario: Analog signal conditioning in PLC I/O modules measuring 4–20mA loop transmitters or thermocouple outputs. IC Role / Device Role / Timing Role: Precision ADC interfacing with op-amp signal chains, supporting bipolar input ranges via COM pin configuration. Use Value: ±2 LSB INL and channel-to-channel gain matching ≤±1 LSB ensure consistent measurement accuracy across multiple channels. |
Use Scenario: Handheld multimeters and oscilloscope probes requiring compact, high-resolution digitization. IC Role / Device Role / Timing Role: Core ADC in portable test gear with SPI interface enabling direct microcontroller integration and minimal glue logic. Use Value: 20-pin TSSOP footprint and 4-wire serial interface reduce layout complexity versus parallel-output ADCs. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar multichannel, low-power, 14-bit ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS8325IPW | 16-bit resolution, 100ksps, 2.7–5.5V supply, no internal reference - requires external 2.5V ref | Higher resolution but lower speed and no integrated reference; needs additional ref IC and decoupling | Select when 16-bit precision outweighs board space and power penalties of external reference circuitry |
| AD7923BRUZ | 12-bit resolution, 1MSPS, 2.7–5.25V supply, internal 2.5V ref, SPI-compatible, 16-TSSOP | Faster sampling but lower resolution; same reference voltage and package size, but fewer channels (4 SE only) | Choose for higher throughput where 12-bit resolution suffices and faster response time is critical |
Compared with ADS8325IPW and AD7923BRUZ, the MAX1147BEUP uniquely balances 14-bit accuracy, integrated +2.500V reference, 116ksps rate, and ultra-low 12µA standby current - making it optimal for space-constrained, battery-operated systems needing calibrated precision without external components.
Availability
MAX1147BEUP is available at Aetrix Electronics and suitable for portable medical monitoring, battery-powered data logging, and industrial process control requiring stable component supply across extended temperature ranges and long production lifecycles.
Supply support for MAX1147BEUP 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 MAX1146–MAX1149 family was engineered for low-power, high-accuracy data acquisition in portable and energy-sensitive systems - emphasizing integrated references, flexible input configurations, and robust serial interfacing.
FAQ
What is the maximum sampling rate of the MAX1147BEUP?
The MAX1147BEUP achieves a maximum throughput rate of 116ksps using an external 2.1MHz serial clock in 18-clock conversion mode. In internal clock mode, it operates at a fixed 116ksps rate with SSTRB strobe aligned to conversion start and completion - enabling deterministic timing for real-time signal processing applications involving the MAX1147BEUP.
Does the MAX1147BEUP require an external reference voltage?
No, the MAX1147BEUP includes a factory-trimmed +2.500V internal reference with ±40ppm/°C temperature coefficient and 2mV load regulation. It can also accept an external reference from 1.5V to VDD at the REF pin - but for most applications, the internal reference eliminates external components and simplifies design around the MAX1147BEUP.
How many analog input channels does the MAX1147BEUP support?
The MAX1147BEUP supports four single-ended inputs (CH0–CH3) or two true-differential input pairs (CH0/CH1 and CH2/CH3), selected via the 3-bit SEL field in the 8-bit control byte. Unlike the 8-channel MAX1148/MAX1149 variants, the MAX1147BEUP is specifically configured for this 4/2-channel capability - confirmed in Maxim's ordering guide and functional description of the MAX1147BEUP.
What power-down modes are available on the MAX1147BEUP?
The MAX1147BEUP offers two software-controllable power-down modes: fast power-down (120µA supply current) and full power-down (300nA), selected via PD1/PD0 bits in the control byte. Hardware shutdown via SHDN pin reduces current to ≤0.3µA. All modes enable automatic wake-up on serial interface activity - a key feature for intermittent sampling in battery-powered MAX1147BEUP implementations.
Is the MAX1147BEUP pin-compatible with other devices in the MAX1146–MAX1149 family?
Yes, all MAX1146–MAX1149 variants share identical 20-pin TSSOP (U20-3) packaging and pinout, including MAX1147BEUP. This allows drop-in replacement between voltage-range and channel-count variants - e.g., substituting MAX1147BEUP for MAX1146BEUP - provided the application accommodates the +2.500V vs. +4.096V reference and 4/2-channel vs. 4/2-channel configuration. Pin compatibility is explicitly documented in Maxim's ordering information table for the MAX1147BEUP.
MAX1147BEUP Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Bulk
- Product Status:
- Active
- Number of Bits:
- 14
- Sampling Rate (Per Second):
- 116k
- Number of Inputs:
- 2, 4
- Input Type:
- Differential, Single Ended
- Data Interface:
- 4-Wire Serial, Microwire, QSPI, 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:
- 2.7V ~ 3.6V
- Voltage - Supply, Digital:
- 2.7V ~ 3.6V
- Features:
- -
- Operating Temperature:
- -40°C ~ 85°C
- Supplier Device Package:
- 20-TSSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX1147BEUP FAQ
1.How can I place an order for MAX1147BEUP through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1147BEUP 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 MAX1147BEUP reliable?
The price and inventory of MAX1147BEUP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1147BEUP is usually 5 days.
3.What payment methods are accepted for MAX1147BEUP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1147BEUP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1147BEUP?
MAX1147BEUP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1147BEUP 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 MAX1147BEUP?
For technical support, including MAX1147BEUP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1147BEUP requirements.
6.How does Aetrix verify that MAX1147BEUP is sourced from the original manufacturer or authorized distributors?
All MAX1147BEUP 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 MAX1147BEUP meets industry standards.
7.What is the process for return or replacement of MAX1147BEUP?
All MAX1147BEUP units undergo pre-shipment inspection (PSI). If there is an issue with MAX1147BEUP, 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 MAX1147BEUP part is unused and in its original packaging.
Return procedure for MAX1147BEUP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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