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8- and 4-Channel, ±3 x VREF Multirange Inputs, Serial 14-Bit ADCs

Low-Power, Multichannel ADCs with ±3 x VREF Input Range

Product Details

The MAX1032/MAX1033 multirange, low-power, 14-bit, successive-approximation, analog-to-digital converters (ADCs) operate from a single +5V supply and achieve throughput rates up to 115ksps. A separate digital supply allows digital interfacing with 2.7V to 5.25V systems using the SPI/QSPI-/MICROWIRE®-compatible serial interface. Partial power-down mode reduces the supply current to 1.3mA (typ). Full power-down mode reduces the power-supply current to 1µA (typ).

The MAX1032 provides eight (single-ended) or four (true differential) analog input channels. The MAX1033 provides four (single-ended) or two (true differential) analog input channels. Each analog input channel is independently software programmable for seven single-ended input ranges 0 to (3 × VREF)/2, (-3 × VREF)/2 to 0, 0 to 3 × VREF, -3 × VREF to 0, (±3 × VREF)/4, (±3 × VREF)/2, ±3 × VREF and three differential input ranges (±3 × VREF)/2, ±3 × VREF, ±6 × VREF.

An on-chip +4.096V reference offers a small convenient ADC solution. The MAX1032/MAX1033 also accept an external reference voltage between 3.800V and 4.136V.

The MAX1032 is available in a 24-pin TSSOP package and the MAX1033 is available in a 20-pin TSSOP package. Each device is specified for operation from -40°C to +85°C.

Key Features

  • Software-Programmable Input Range for Each Channel
  • Single-Ended Input Ranges (VREF = 4.096V)
    • (0 to (3 × VREF)/2, (-3 × VREF)/2 to 0, 0 to 3 × VREF, -3 × VREF to 0, (±3 × VREF)/4, (±3 × VREF)/2, ±3 × VREF)
  • Differential Input Ranges
    • (±3 × VREF)/2, ±3 × VREF, ±6 × VREF
  • Eight Single-Ended or Four Differential Analog Inputs (MAX1032)
  • Four Single-Ended or Two Differential Analog Inputs (MAX1033)
  • ±16.5V Overvoltage Tolerant Inputs
  • Internal or External Reference
  • 115ksps Maximum Sample Rate
  • Single +5V Power Supply
  • 20-/24-Pin TSSOP Package

Applications/Uses

  • Avionics
  • Data Acquisition Systems
  • Industrial Control Systems
  • Robotics
Parametric specs for Precision ADCs (< 5Msps)
Resolution (bits) (ADC) 14
# Input Channels 8
Conv. Rate (ksps) (max) 115
Data Bus SPI
ADC Architecture SAR
Diff/S.E. Input Both
Internal VREF (V) (nominal) 4.096
External VREF (V) (min) 3.8
External VREF (V) (max) 4.136
Unipolar VIN (V) (max) 12.288
Bipolar VIN (±V) (max) 12.288
INL (±LSB) 0.25
Package/Pins TSSOP/24
Budgetary
Price (See Notes)
$7.50 @1k
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Simplified Block Diagram

MAX1032, MAX1033: Block Diagram MAX1032, MAX1033: Block Diagram Zoom icon

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Parameters

Parametric specs for Precision ADCs (<u><</u> 5Msps)
Resolution (bits) (ADC) 14
# Input Channels 8
Conv. Rate (ksps) (max) 115
Data Bus SPI
ADC Architecture SAR
Diff/S.E. Input Both
Internal VREF (V) (nominal) 4.096
External VREF (V) (min) 3.8
External VREF (V) (max) 4.136
Unipolar VIN (V) (max) 12.288
Bipolar VIN (±V) (max) 12.288
INL (±LSB) 0.25
Package/Pins TSSOP/24
Budgetary
Price (See Notes)
$7.50 @1k

Key Features

  • Software-Programmable Input Range for Each Channel
  • Single-Ended Input Ranges (VREF = 4.096V)
    • (0 to (3 × VREF)/2, (-3 × VREF)/2 to 0, 0 to 3 × VREF, -3 × VREF to 0, (±3 × VREF)/4, (±3 × VREF)/2, ±3 × VREF)
  • Differential Input Ranges
    • (±3 × VREF)/2, ±3 × VREF, ±6 × VREF
  • Eight Single-Ended or Four Differential Analog Inputs (MAX1032)
  • Four Single-Ended or Two Differential Analog Inputs (MAX1033)
  • ±16.5V Overvoltage Tolerant Inputs
  • Internal or External Reference
  • 115ksps Maximum Sample Rate
  • Single +5V Power Supply
  • 20-/24-Pin TSSOP Package

Applications/Uses

  • Avionics
  • Data Acquisition Systems
  • Industrial Control Systems
  • Robotics

Description

The MAX1032/MAX1033 multirange, low-power, 14-bit, successive-approximation, analog-to-digital converters (ADCs) operate from a single +5V supply and achieve throughput rates up to 115ksps. A separate digital supply allows digital interfacing with 2.7V to 5.25V systems using the SPI/QSPI-/MICROWIRE®-compatible serial interface. Partial power-down mode reduces the supply current to 1.3mA (typ). Full power-down mode reduces the power-supply current to 1µA (typ).

The MAX1032 provides eight (single-ended) or four (true differential) analog input channels. The MAX1033 provides four (single-ended) or two (true differential) analog input channels. Each analog input channel is independently software programmable for seven single-ended input ranges 0 to (3 × VREF)/2, (-3 × VREF)/2 to 0, 0 to 3 × VREF, -3 × VREF to 0, (±3 × VREF)/4, (±3 × VREF)/2, ±3 × VREF and three differential input ranges (±3 × VREF)/2, ±3 × VREF, ±6 × VREF.

An on-chip +4.096V reference offers a small convenient ADC solution. The MAX1032/MAX1033 also accept an external reference voltage between 3.800V and 4.136V.

The MAX1032 is available in a 24-pin TSSOP package and the MAX1033 is available in a 20-pin TSSOP package. Each device is specified for operation from -40°C to +85°C.

Simplified Block Diagram

MAX1032, MAX1033: Block Diagram MAX1032, MAX1033: Block Diagram Zoom icon

Technical Docs

Support & Training

Search our knowledge base for answers to your technical questions.

Filtered Search

Our dedicated team of Applications Engineers are also available to answer your technical questions. Visit our support portal