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Analog Devices Inc./Maxim Integrated MAX1188ACUP+
- Part No.:
- MAX1188ACUP+
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MAX1188ACUP+.pdf
- Description:
- IC ADC 16BIT SAR 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:3,418
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Product details
Overview
MAX1188ACUP+ from Maxim Integrated is a 16-bit, 135ksps successive-approximation ADC with ±10V bipolar analog input range, single +4.75V to +5.25V analog supply, and byte-wide parallel interface. It features factory-trimmed internal 4.096V reference, ±2 LSB INL, -100dB THD, and operates across 0°C to +70°C in industrial data-acquisition systems requiring high DC accuracy and low power.
For engineers reviewing the MAX1188ACUP+ datasheet, MAX1188ACUP+ pinout, MAX1188ACUP+ application, or MAX1188ACUP+ equivalent, this page delivers verified specifications, validated pin functions, confirmed temperature-grade packaging, and real-world timing and accuracy trade-offs for precision analog-to-digital conversion in battery-powered and process-control environments.
Technical Context
The MAX1188ACUP+ implements a SAR architecture with integrated track-and-hold and input scaler, enabling true ±10V bipolar operation from a single +5V analog supply. Its internal clock eliminates external timing dependencies, and acquisition time is fixed at 2µs with 4.7µs max conversion time after CS falling edge.
Power management is controlled via R/C pin state during the second CS falling edge: low enables standby mode (3.7mA typ), high triggers shutdown (0.5µA typ) with 12ms reference wake-up. The device supports both internal (4.096V) and external (3.8V–4.2V) reference modes via REFADJ pin configuration.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 16-bit - delivers 65,536 discrete output codes for high-fidelity signal digitization |
| Sampling Rate | 135ksps - supports real-time capture of signals up to ~65kHz Nyquist bandwidth |
| Analog Input Range | ±10V - accepts full-scale bipolar industrial sensor outputs without external scaling |
| INL / DNL | ±2 LSB / ±1 LSB - ensures monotonicity and ≤0.003% full-scale linearity error over temperature |
| THD / SINAD | -100dB / 90dB - enables clean spectral performance for precision instrumentation and medical sensing |
| Supply Current | 2.9mA (ext ref) / 3.8mA (int ref) - enables low-power operation in portable or thermally constrained designs |
| Operating Temp | 0°C to +70°C - qualified for commercial and light-industrial ambient conditions |
Pinout & Package
MAX1188ACUP+ is housed in a 20-pin TSSOP package (4.4mm × 6.5mm, 0.65mm pitch), optimized for compact PCB layouts and thermal performance in high-density analog systems.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| 1–4, 17–20 (D0–D7/D8–D15) | Tri-state parallel data outputs | Byte-multiplexed 16-bit output bus; HBEN selects high/low byte for 8-bit microcontroller interfacing |
| 5 (R/C) | Read/Convert control | Determines post-conversion power state: low = standby (ref on), high = shutdown (ref off) |
| 6 (EOC) | End-of-conversion flag | Active-low signal indicates valid data ready for readout; synchronizes µP bus access |
| 7 (AVDD), 16 (DVDD) | Analog/digital supply inputs | Separate rails allow direct interfacing with +2.7V–+5.25V logic while maintaining analog integrity |
| 8,10 (AGND), 15 (DGND) | Analog/digital ground terminals | Dual AGND pins require star grounding near AVDD bypass cap; DGND isolated for noise separation |
| 9 (AIN) | Bipolar analog input | Accepts ±10V input with internal scaling; input impedance varies with mode (6kΩ typical in shutdown) |
| 11 (REFADJ), 12 (REF) | Reference buffer control/output | REFADJ = AVDD disables internal buffer for external reference; REF outputs 4.096V (±35ppm/°C) |
| 13 (HBEN) | High-byte enable | Controls MSB/LSB byte presentation on D0–D7 bus-enables 8-bit data path compatibility |
| 14 (CS) | Convert start | Three-edge sequence controls power-up, conversion trigger, and data latching; defines timing critical path |
Key Features
| Feature | Design Value |
|---|---|
| ±10V bipolar input range | Eliminates need for external level-shifting circuitry when interfacing with ±10V industrial transducers |
| Internal 4.096V reference | Factory-trimmed, ±35ppm/°C tempco, bypassed by 10µF/0.1µF caps-reduces BOM count and layout complexity |
| AutoShutdown™ mode | Reduces total supply current to 0.5µA between conversions-extends battery life in portable DAQ systems |
| Byte-wide parallel interface | Supports direct connection to 8-bit µPs via HBEN-controlled multiplexing-avoids serial protocol overhead |
| Single +5V analog supply | Operates from one rail despite ±10V input-simplifies power architecture and improves system-level efficiency |
Applications
| Temperature Sensing and Monitoring | Industrial Process Control |
|---|---|
|
Use Scenario: High-resolution monitoring of RTD or thermocouple outputs in HVAC or chemical reactor control cabinets. IC Role / Device Role / Timing Role: Precision ADC capturing slow-varying analog sensor voltages with minimal drift and no missing codes. Use Value: ±2 LSB INL and -100dB THD ensure <0.01°C resolution stability over 0°C–70°C ambient range. |
Use Scenario: Digitizing 4–20mA loop signals conditioned to ±10V range in PLC I/O modules. IC Role / Device Role / Timing Role: Bipolar-input front-end converter handling scaled field transmitter outputs with galvanic isolation. Use Value: Direct ±10V acceptance avoids op-amp gain stages, reducing component count and thermal drift sources. |
| I/O Modules | Precision Instrumentation |
|
Use Scenario: Modular analog input card for programmable logic controllers with hot-swap capability. IC Role / Device Role / Timing Role: Low-power, TSSOP-packaged ADC enabling dense channel count per board area. Use Value: 20-pin TSSOP footprint and 2.9mA active current support multi-channel designs without forced air cooling. |
Use Scenario: Benchtop multimeter or oscilloscope front-end digitizing calibrated reference signals. IC Role / Device Role / Timing Role: High-SINAD (90dB) ADC providing accurate RMS and harmonic analysis of test waveforms. Use Value: 90dB SINAD and 103dB SFDR enable >14.5 ENOB at 1kHz-meeting Class A digital multimeter requirements. |
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, SPI interface, ±VREF input only (no ±10V native), 1.8V/3.3V supplies | Requires external level-shifting for ±10V signals; higher speed but no byte-wide parallel bus | Choose for high-speed, low-voltage systems where SPI is preferred and input scaling is acceptable |
| AD7606BSTZ | 16-bit, 200ksps, simultaneous sampling, ±10V input, parallel/SPI, 5V-only supply | 8-channel integrated solution with oversampling; larger LQFP-64 package and higher power (120mW) | Choose for multi-channel synchronized acquisition where channel count outweighs size/power constraints |
Compared with ADS8860IDRCT and AD7606BSTZ, the MAX1188ACUP+ uniquely balances native ±10V bipolar input, byte-wide parallel interface, and sub-3mA active current in a 20-pin TSSOP-making it optimal for space-constrained, single-channel industrial DAQ nodes requiring minimal external components.
Availability
MAX1188ACUP+ is available at Aetrix Electronics and suitable for industrial process control, precision instrumentation, and portable data-acquisition systems requiring stable component supply, long-term lifecycle support, and guaranteed commercial-temperature grade performance.
Supply support for MAX1188ACUP+ 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 MAX1178/MAX1188 product line was designed specifically for high-accuracy, low-power, single-supply data-acquisition systems requiring bipolar input capability and minimal external components-targeting portable test equipment and distributed sensor networks.
FAQ
What is the maximum sampling rate of the MAX1188ACUP+?
The MAX1188ACUP+ achieves a maximum sampling rate of 135ksps under specified conditions (AVDD = DVDD = +5V ±5%, external reference). This corresponds to a Nyquist frequency of 67.5kHz and is guaranteed across the full 0°C to +70°C operating range. The timing is governed by tCONV (max 4.7µs) and tACQ (2µs), with CS-controlled sequencing ensuring deterministic throughput.
Does the MAX1188ACUP+ support external reference voltage?
Yes, the MAX1188ACUP+ supports external reference voltage via the REFADJ pin. When REFADJ is tied to AVDD, the internal reference buffer is disabled, allowing a 3.8V–4.2V external reference to drive the REF pin directly. The device requires the external source to supply ≥100µA DC load current with ≤10Ω output impedance for full 16-bit accuracy.
How does the R/C pin control power modes in the MAX1188ACUP+?
In the MAX1188ACUP+, the R/C pin state during the second falling edge of CS determines post-conversion behavior: low maintains standby mode (reference and buffer remain active, 3.7mA typ), while high activates shutdown mode (reference and buffer powered down, 0.5µA typ). Shutdown requires 12ms wake-up before next conversion for full accuracy.
What is the purpose of the HBEN pin on the MAX1188ACUP+?
The HBEN (High-Byte Enable) pin on the MAX1188ACUP+ controls byte multiplexing of the 16-bit conversion result onto the 8-bit D0–D7 data bus. When HBEN = high, the MSB byte (D8–D15) appears on D0–D7; when HBEN = low, the LSB byte (D0–D7) is presented. This enables seamless interfacing with 8-bit microcontrollers without external latch logic.
Is the MAX1188ACUP+ pin-compatible with the MAX1178ACUP+?
No, the MAX1188ACUP+ is not pin-compatible with the MAX1178ACUP+ in terms of analog input scaling or reference configuration. While both share identical 20-pin TSSOP packaging and core interface signals, the MAX1188ACUP+ is optimized for ±10V input (vs. ±5V for MAX1178ACUP+) and exhibits different input resistance (6kΩ vs. 3kΩ) and reference adjustment characteristics-requiring separate PCB layout and bias network design.
MAX1188ACUP+ Specifications
- Product attributes
- Attribute value
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Series:
- -
- Package/Case:
- 20-TSSOP (0.173", 4.40mm Width)
- Packaging:
- Tube
- Product Status:
- Active
- Number of Bits:
- 16
- Sampling Rate (Per Second):
- 135k
- Number of Inputs:
- 1
- Input Type:
- Single Ended
- Data Interface:
- Parallel
- 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:
- 2.7V ~ 5.25V
- Features:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 20-TSSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX1188ACUP+ FAQ
1.How can I place an order for MAX1188ACUP+ through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1188ACUP+ 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 MAX1188ACUP+ reliable?
The price and inventory of MAX1188ACUP+ are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1188ACUP+ is usually 5 days.
3.What payment methods are accepted for MAX1188ACUP+?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1188ACUP+ transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1188ACUP+?
MAX1188ACUP+ orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1188ACUP+ 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 MAX1188ACUP+?
For technical support, including MAX1188ACUP+ datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1188ACUP+ requirements.
6.How does Aetrix verify that MAX1188ACUP+ is sourced from the original manufacturer or authorized distributors?
All MAX1188ACUP+ 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 MAX1188ACUP+ meets industry standards.
7.What is the process for return or replacement of MAX1188ACUP+?
All MAX1188ACUP+ units undergo pre-shipment inspection (PSI). If there is an issue with MAX1188ACUP+, 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 MAX1188ACUP+ part is unused and in its original packaging.
Return procedure for MAX1188ACUP+:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
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