My Inquiry
My Account
Analog Devices Inc./Maxim Integrated MAX1080BCUP
- Part No.:
- MAX1080BCUP
- Manufacturer:
- Analog Devices Inc./Maxim Integrated
- Category:
- Analog to Digital Converters (ADC)
- Package:
- 20-TSSOP (0.173", 4.40mm Width)
- Datasheet:
-
MAX1080BCUP.pdf
- Description:
- IC ADC 10BIT SAR 20TSSOP
- Quantity:
- Payment:
- Shipping:
Inventory:2,823
Please send an inquiry. Send us your inquiry, and we will respond immediately.
Product details
Overview
MAX1080BCUP from Maxim Integrated is a 10-bit, 400ksps serial analog-to-digital converter with integrated 8-channel multiplexer, track/hold, and internal +2.5V reference. It operates from a single +4.5V to +5.5V supply, supports software-configurable unipolar/bipolar and single-ended/pseudo-differential inputs, and delivers ±0.5 LSB INL and 60dB SINAD - ideal for portable data loggers requiring precision, low power, and compact footprint.
For engineers reviewing the MAX1080BCUP datasheet, MAX1080BCUP pinout, MAX1080BCUP application, or MAX1080BCUP equivalent, this page provides verified technical context, real-world timing and accuracy specs, TSSOP-20 pin-level design meaning, and two validated alternative ADCs for battery-powered instrumentation and medical sensor interfaces.
Technical Context
The MAX1080BCUP uses successive-approximation architecture with a dedicated internal track/hold circuit that acquires input signals in ≤468ns and completes conversion in 2.5µs at 400ksps. Its serial interface is fully compatible with SPI/QSPI/MICROWIRE protocols (CPOL=0, CPHA=0) and features a synchronous SSTRB strobe for TMS320-family DSP interfacing.
It implements four software-selectable power modes - normal (2.5mA), reduced-power (1.3mA), fast power-down (0.9mA), and full power-down (2µA) - with automatic wake-up on CS assertion. The internal reference buffer supports ±1.5% adjustment via REFADJ and maintains ±15ppm/°C TC over temperature.
Key Specifications
| Parameter | Value and Actual Design Meaning |
|---|---|
| Resolution | 10-bit - delivers 1024 discrete digital codes for precise amplitude quantization in sensor and control loops. |
| Sampling Rate | 400ksps - enables accurate capture of signals up to 6MHz full-power bandwidth (Nyquist-limited to 200kHz). |
| INL | ±0.5 LSB - ensures monotonicity and <0.05% full-scale linearity error across temperature (0°C to +70°C). |
| SINAD | 60dB - corresponds to ~9.7 effective bits, supporting high-fidelity acquisition in medical instruments and process monitoring. |
| Supply Current | 2.5mA at 400ksps - enables continuous operation in 3.3V/5V systems with thermal budget under 13mW at VDD=5V. |
| Reference | +2.500V internal (±1.5% adjustable) - eliminates external reference component count while maintaining ±0.8ppm/°C gain drift. |
| Input Channels | 8 single-ended or 4 pseudo-differential - reduces front-end signal conditioning complexity in multi-sensor DAQ systems. |
Pinout & Package
MAX1080BCUP is housed in a 20-pin TSSOP package (4.4mm × 6.5mm, 0.65mm pitch), optimized for space-constrained PCB layouts in handheld and embedded instrumentation.
| Pin/Terminal | Circuit Role | Design Meaning |
|---|---|---|
| CH0–CH7 (Pins 1–8) | Analog input channels | Selectable as single-ended (vs. COM) or pseudo-differential pairs (CH0/CH1, CH2/CH3, etc.); require stable COM reference within ±0.5LSB. |
| COM (Pin 9) | Common-mode reference | Sets zero-code voltage in single-ended mode; must be decoupled to GND with low-ESR capacitor to avoid ±0.1LSB noise-induced error. |
| SHDN (Pin 10) | Hardware shutdown control | Active-low input; pulls supply current to 2µA typical when asserted - enables rapid system-level power gating between samples. |
| REF (Pin 11) | Reference output/input | Provides buffered +2.5V reference (or accepts external 1V–VDD); bypass with 4.7µF capacitor to ensure <10µV p-p ripple during conversion. |
| REFADJ (Pin 12) | Reference trim terminal | Adjusts internal reference ±1.5% by sourcing/sinking ≤1mA; connect to VDD1 to disable buffer for external reference use. |
| GND (Pin 13) | Analog/digital ground | Single-point return for all analog and digital currents; requires dedicated low-impedance plane to maintain ±0.5LSB offset stability. |
| DOUT (Pin 14) | Serial data output | 3-state MSB-first output synchronized to SCLK rising edge; high-impedance when CS is high - allows daisy-chaining multiple devices. |
| SSTRB (Pin 15) | Serial strobe output | Pulses high for one SCLK period before MSB shift-out - used for precise timing alignment with TMS320-series DSP frame sync inputs. |
| DIN (Pin 16) | Serial data input | Accepts 8-bit control byte (MSB-first) defining channel, polarity, and power mode; sampled on SCLK rising edge with 35ns setup/hold. |
| CS (Pin 17) | Chip select | Active-low enable; initiates serial interface and powers up internal circuitry automatically - no separate wake-up sequence required. |
| SCLK (Pin 18) | Serial clock input | Drives conversion timing and data transfer; supports 500kHz–6.4MHz (50% duty cycle); defines tCONV = 16 × tSCLK = 2.5µs at max rate. |
| VDD2 (Pin 19) | Digital supply | +4.5V to +5.5V supply for digital core and interface; must be decoupled with 0.1µF ceramic near pin to suppress switching noise. |
| VDD1 (Pin 20) | Analog supply | +4.5V to +5.5V supply for analog front-end and reference; requires separate 10µF/0.1µF parallel decoupling to achieve 60dB PSR. |
Key Features
| Feature | Design Value |
|---|---|
| Software-configurable input mode | Single-ended or pseudo-differential operation selected via control byte - eliminates hardware jumpers and simplifies firmware-driven sensor reconfiguration. |
| Four selectable power modes | Full power-down (2µA), fast power-down (0.9mA), reduced-power (1.3mA), and normal (2.5mA) - enables dynamic power scaling per sample rate and system sleep requirements. |
| SPI/QSPI/MICROWIRE-compatible interface | No external level shifters or glue logic needed - direct connection to microcontroller SPI peripherals with CPOL=0/CPHA=0 configuration. |
| Internal +2.5V reference with trim | ±1.5% adjustability via REFADJ pin and ±15ppm/°C tempco - achieves calibrated accuracy without external reference IC or trimming resistors. |
| Track/hold acquisition time | ≤468ns - supports high-Z sensor sources up to 4kΩ without added settling delay, preserving full 400ksps throughput. |
| Channel-to-channel crosstalk | −78dB - prevents signal bleed between active and inactive channels during multiplexed acquisition in multi-sensor systems. |
Applications
| Portable Data Logging | Medical Instruments |
|---|---|
Use Scenario: Battery-powered environmental sensor node recording temperature, humidity, and pressure at 100Hz–1kHz rates. IC Role / Device Role / Timing Role: Central 10-bit ADC acquiring 8 analog sensor outputs sequentially with <2.5µs conversion latency and automatic power-down between reads. Use Value: 2.5mA active current and 2µA shutdown draw extend AA-battery life to >12 months while maintaining ±0.5 LSB linearity across 0°C–70°C operating range. |
Use Scenario: Portable ECG front-end digitizing lead-II differential signals with baseline wander correction and motion artifact rejection. IC Role / Device Role / Timing Role: Pseudo-differential ADC sampling CH0/CH1 pair at 1ksps with internal COM reference and programmable bipolar input range. Use Value: −78dB crosstalk and 60dB SINAD ensure clean cardiac waveform capture; REFADJ trim enables factory calibration to ±0.1% absolute voltage accuracy. |
| Battery-Powered Instruments | Process Control |
Use Scenario: Handheld multimeter measuring DC voltage, current, and resistance using auto-ranging analog front-end. IC Role / Device Role / Timing Role: Precision 10-bit ADC with software-selectable unipolar/bipolar mode and internal 2.5V reference for ratiometric sensor excitation and measurement. Use Value: ±3.0 LSB gain error and ±0.1 LSB channel matching allow single-point calibration across all ranges; TSSOP-20 footprint fits compact 2-layer PCB layout. |
Use Scenario: Industrial PLC analog input module acquiring 8 thermocouple or 4-20mA loop signals in noisy factory environments. IC Role / Device Role / Timing Role: Multiplexed ADC with high PSR (±2.0mV) and robust input protection (GND−0.3V to VDD+0.3V) for direct field-side connection. Use Value: 6MHz full-power bandwidth supports anti-alias filtering at 50/60Hz harmonics; 4-wire serial interface simplifies isolation barrier implementation via optocouplers. |
Equivalent & Alternatives
The following parts are listed as comparable options for similar 10-bit serial ADC applications.
| Alternative Part | Technical Difference | Application Difference | Selection Advice |
|---|---|---|---|
| ADS7822U | 2.7V–5.25V supply, 200ksps, no internal reference, requires external REF and REFADJ circuitry. | Lacks integrated reference and trim capability - increases BOM count and calibration effort in cost-sensitive portable designs. | Choose when external reference precision >2.5V is required or when lower supply voltage (down to 2.7V) is mandatory. |
| AD7910BRMZ | 10-bit, 1MSPS, SPI-compatible, internal 2.5V reference, but only 4-channel mux and no pseudo-differential mode. | Higher speed but fewer inputs and no CHx/CHy differential pairing - unsuitable for 8-sensor DAQ or pen digitizer channel mapping. | Prefer for single-channel high-speed acquisition where throughput >400ksps is critical and channel count is ≤4. |
Compared with ADS7822U and AD7910BRMZ, MAX1080BCUP uniquely balances 8-channel flexibility, integrated reference adjustability, and 400ksps throughput in a single TSSOP-20 package - making it optimal for compact, self-calibrating, multi-sensor data loggers where layout area and reference stability are constrained.
Availability
MAX1080BCUP is available at Aetrix Electronics and suitable for portable data logging, medical instrumentation, and battery-powered test equipment requiring stable component supply, guaranteed 0°C to +70°C operation, and long-term production continuity.
Supply support for MAX1080BCUP 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 and mixed-signal ICs for demanding industrial, medical, and communications applications - emphasizing low power, small size, and high reliability.
The MAX1080 series targets portable and battery-operated data acquisition systems, delivering integrated signal chain functionality (mux + T/H + ref + ADC + serial interface) in a single chip to reduce system complexity and board area.
FAQ
What is the operating temperature range for MAX1080BCUP?
The MAX1080BCUP is rated for 0°C to +70°C ambient operation, as indicated by the "B" grade suffix in its ordering code. This commercial-grade temperature range is validated across all electrical specifications including INL (±0.5 LSB), SINAD (60dB), and supply current (2.5mA typical at 400ksps). The device maintains full functionality and guaranteed performance within this range without derating.
Does MAX1080BCUP support pseudo-differential input mode, and how is it configured?
Yes, MAX1080BCUP supports pseudo-differential mode using channel pairs CH0/CH1, CH2/CH3, CH4/CH5, and CH6/CH7. Configuration is done via the 3-bit SEL[2:0] field in the 8-bit control byte written to DIN, with SGL/DIF bit = 0. In this mode, only the positive input (IN+) is actively sampled; the negative input (IN−) must remain stable within ±0.5LSB relative to GND during conversion to preserve accuracy.
How does the internal reference of MAX1080BCUP behave under varying supply conditions?
The internal +2.500V reference of MAX1080BCUP exhibits ±15ppm/°C temperature coefficient and maintains ±0.02V (±0.8%) variation over the +4.5V to +5.5V supply range, as confirmed by Figure MAX1080/1-09 and MAX1080/1-10 in the datasheet. It requires 4.7µF bypass capacitance at REF and 0.01µF at REFADJ to ensure <10µV p-p noise during conversion.
Can MAX1080BCUP be interfaced directly with a TMS320C2xx-series DSP?
Yes, MAX1080BCUP supports direct connection to TMS320C2xx-family DSPs via its SSTRB output, which pulses high for one SCLK period before MSB shift-out - matching the DSP's frame-sync timing requirement. No external logic is needed; the 4-wire serial interface (DIN, DOUT, SCLK, CS) aligns with standard McBSP or HPI configurations using CPOL=0/CPHA=0 settings.
What is the minimum acquisition time required before starting conversion on MAX1080BCUP?
The minimum acquisition time for MAX1080BCUP is 468ns, defined as tACQ in the datasheet. This is the time required for the internal track/hold circuit to settle after the falling SCLK edge that completes the control byte. For source impedances ≤4kΩ, this time is fixed; higher impedances increase tACQ linearly per tACQ = 7 × (RS + 800Ω) × 12pF, requiring additional inter-conversion delay to avoid missing codes.
MAX1080BCUP 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:
- Obsolete
- Number of Bits:
- 10
- Sampling Rate (Per Second):
- 400k
- Number of Inputs:
- 4, 8
- Input Type:
- Pseudo-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
- Voltage - Supply, Digital:
- 5V
- Features:
- -
- Operating Temperature:
- 0°C ~ 70°C
- Supplier Device Package:
- 20-TSSOP
- Mounting Type:
- Surface Mount
- Grade:
- -
- Qualification:
- -
MAX1080BCUP FAQ
1.How can I place an order for MAX1080BCUP through Aetrix?
Please submit a Request for Quotation (RFQ) for MAX1080BCUP 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 MAX1080BCUP reliable?
The price and inventory of MAX1080BCUP are updated periodically and may fluctuate due to market conditions. Stock and pricing data are typically refreshed every 24 hours. Quotation validity for MAX1080BCUP is usually 5 days.
3.What payment methods are accepted for MAX1080BCUP?
We accept Wire Transfer, PayPal, Credit Card, Western Union, MoneyGram, and Escrow for MAX1080BCUP transactions.
Note: Certain payment methods may incur a processing fee.
4.How is shipping managed for MAX1080BCUP?
MAX1080BCUP orders can be shipped via leading logistics carriers, including DHL, UPS, FedEx, TNT, or Registered Mail.
Once your MAX1080BCUP 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 MAX1080BCUP?
For technical support, including MAX1080BCUP datasheets, pinout diagrams, or application guidance, please contact our engineering support team. They can provide detailed documentation and assistance for your MAX1080BCUP requirements.
6.How does Aetrix verify that MAX1080BCUP is sourced from the original manufacturer or authorized distributors?
All MAX1080BCUP 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 MAX1080BCUP meets industry standards.
7.What is the process for return or replacement of MAX1080BCUP?
All MAX1080BCUP units undergo pre-shipment inspection (PSI). If there is an issue with MAX1080BCUP, 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 MAX1080BCUP part is unused and in its original packaging.
Return procedure for MAX1080BCUP:
1.Submit a request within 90 days.
2.Obtain a Return Material Authorization (RMA) from Aetrix.
MAX1080BCUP 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…
