MAX1091:250ksps, +3V, 8-/4-Channel, 10-Bit ADCs with +2.5V Reference and Parallel Interface

The MAX1091/MAX1093 low-power, 10-bit analog-to-digital converters (ADCs) feature a successive-approximation ADC, automatic power-down, fast wake-up (2µs), an on-chip clock, +2.5V internal reference, and a high-speed, byte-wide parallel interface. They operate with a single +3V analog supply and feature a VLOGIC pin that allows them to interface directly with a +1.8V to +3.6V digital supply. Power consumption is only 5.7mW (VDD = VLOGIC) at the maximum sampling rate of 250ksps. Two software-selectable power-down modes enable the MAX1091/MAX1093 to be shut down between conversions; accessing the parallel interface returns them to normal operation. Powering down between conversions can cut supply current to under 10µA at reduced sampling rates. Both devices offer software-configurable analog inputs for unipolar/bipolar and single-ended/pseudo-differential operation. In single-ended mode, the MAX1091 has eight input channels and the MAX1093 has four input channels (four and two input channels, respectively, when in pseudo-differential mode). Excellent dynamic performance and low power, combined with ease of use and small package size, make these converters ideal for battery-powered and data-acquisition applications or for other circuits with demanding power consumption and space requirements. The MAX1091/MAX1093 tri-states active-low INT when active-low CS goes high. Refer to MAX1061/MAX1063 if tri-stating active-low INT is not desired. The MAX1091 is available in a 28-pin QSOP package, while the MAX1093 is available in a 24-pin QSOP. For pin-compatible +5V, 10-bit versions, refer to the MAX1090/MAX1092 data sheet.

Key Features
  • 10-Bit Resolution, ±0.5 LSB Linearity
  • +3V Single-Supply Operation
  • User-Adjustable Logic Level (+1.8V to +3.6V)
  • Internal +2.5V Reference
  • Software-Configurable, Analog Input Multiplexer
    • 8-Channel Single-Ended/4-Channel Pseudo-Differential (MAX1091)
    • 4-Channel Single-Ended/2-Channel Pseudo-Differential (MAX1093)
  • Software-Configurable, Unipolar/Bipolar Inputs
  • Low Power
    • 1.9mA (250ksps)
    • 1.0mA (100ksps)
    • 400µA (10ksps)
    • 2µA (Shutdown)
  • Internal 3MHz Full-Power Bandwidth Track/Hold
  • Byte-Wide Parallel (8 + 2) Interface
  • Small Footprint:
    • 28-Pin QSOP (MAX1091)
    • 24-Pin QSOP (MAX1093)
MAX1091, MAX1093: Typical Operating Circuit
MAX1091, MAX1093: Typical Operating Circuit
Applications/Uses
  • Data Acquisition Systems
  • Data Logging
  • Energy Management
  • Industrial Controls Systems
  • Patient Monitoring
  • Touch Screens
DataSheet
titleDownload file
MAX1091-MAX1093 Data SheetMAX1091-MAX1093.pdf
Parametrics
Part NumberResolution
(bits)
Input Chan.Conv. Rate
(ksps)
ADC ArchitectureData BusDiff/S.E. InputInternal VREF
(V)
External VREF
(V)
External VREF
(V)
Unipolar VIN
(V)
Bipolar VIN
(±V)
SNR
(dB)
THD
(dB)
INL
(±LSB)
Package/PinsBudgetary
Price
ADCmaxnominalminmaxmaxmaxSee Notes
MAX1091108250SARµP/8Both2.513.62.51.2560-721QSOP/28$4.18 @1k
MAX10934QSOP/24$5.97 @1k
Related Products
  • MAX1063:250ksps, +3V, 8-/4-Channel, 10-Bit ADCs with +2.5V Reference and Parallel Interface
  • MAX1064:400ksps, +5V, 8-/4-Channel, 10-Bit ADCs with +2.5V Reference and Parallel Interface
  • MAX1092:400ksps, +5V, 8-/4-Channel, 10-Bit ADCs with +2.5V Reference and Parallel Interface
  • MAX1090:400ksps, +5V, 8-/4-Channel, 10-Bit ADCs with +2.5V Reference and Parallel Interface
  • MAX1293:250ksps, +3V, 8-/4-Channel, 12-Bit ADCs with +2.5V Reference and Parallel Interface
  • MAX1291:250ksps, +3V, 8-/4-Channel, 12-Bit ADCs with +2.5V Reference and Parallel Interface
  • MAX1296:420ksps, +5V, 6-/2-Channel, 12-Bit ADCs with +2.5V Reference and Parallel Interface
  • MAX1297:265ksps, +3V, 6-/2-Channel, 12-Bit ADCs with +2.5V Reference and Parallel Interface
  • MAX1294:420ksps, +5V, 6-/2-Channel, 12-Bit ADCs with +2.5V Reference and Parallel Interface
  • MAX1295:265ksps, +3V, 6-/2-Channel, 12-Bit ADCs with +2.5V Reference and Parallel Interface
  • MAX1290:400ksps, +5V, 8-/4-Channel, 12-Bit ADCs with +2.5V Reference and Parallel Interface
  • MAX1292:400ksps, +5V, 8-/4-Channel, 12-Bit ADCs with +2.5V Reference and Parallel Interface
  • MAX151:300kHz, 10-Bit ADC with Reference and Track/Hold
Ordering Information
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX1091ACEINo Longer AvailableMAX1091ACEI+QSOP,;28 pin;61.9 mm²0°C to +70°CNo
MAX1091ACEI+ActiveQSOP,;28 pin;61.9 mm²0°C to +70°CLead Free
MAX1091ACEI+TActiveQSOP,;28 pin;61.9 mm²0°C to +70°CLead Free
MAX1091ACEI-TNo Longer AvailableMAX1091ACEI+TQSOP;28 pin0°C to +70°CSee data sheet
MAX1091AEEINo Longer AvailableMAX1091AEEI+QSOP,;28 pin;61.9 mm²-40°C to +85°CNo
MAX1091AEEI+ActiveQSOP,;28 pin;61.9 mm²-40°C to +85°CLead Free
MAX1091AEEI+TActiveQSOP,;28 pin;61.9 mm²-40°C to +85°CLead Free
MAX1091AEEI-TNo Longer AvailableMAX1091AEEI+TQSOP;28 pin-40°C to +85°CSee data sheet
MAX1091BCEINo Longer AvailableMAX1091BCEI+QSOP,;28 pin;61.9 mm²0°C to +70°CNo
MAX1091BCEI+ActiveQSOP,;28 pin;61.9 mm²0°C to +70°CLead Free
Part NumberStatusRecommended ReplacementPackageTempRoHS
MAX1091BCEI+TActiveQSOP,;28 pin;61.9 mm²0°C to +70°CLead Free
MAX1091BCEI-TNo Longer AvailableMAX1091BCEI+TQSOP,;28 pin;61.9 mm²0°C to +70°CNo
MAX1091BEEINo Longer AvailableMAX1091BEEI+QSOP,;28 pin;61.9 mm²-40°C to +85°CNo
MAX1091BEEI+ActiveQSOP,;28 pin;61.9 mm²-40°C to +85°CLead Free
MAX1091BEEI+TActiveQSOP,;28 pin;61.9 mm²-40°C to +85°CLead Free
MAX1091BEEI-TNo Longer AvailableMAX1091BEEI+TQSOP;28 pin-40°C to +85°CSee data sheet
MAX1091-MAX1093.pdf MAX1093
MAX1091-MAX1093.pdf MAX1093