ADC78H89 7-Channel, 500 KSPS, 12-Bit A/D Converter | TI.com

ADC78H89 (ACTIVE) 7-Channel, 500 KSPS, 12-Bit A/D Converter

 

Description

The ADC78H89 is a low-power, seven-channel CMOS 12-bit analog-to-digital converter with a conversion throughput of 500 KSPS. The converter is based on a successive-approximation register architecture with an internal track-and-hold circuit. It can be configured to accept up to seven input signals on pins AIN1 through AIN7.

The output serial data is straight binary, and is compatible with several standards, such as SPI™, QSPI™, MICROWIRE™, and many common DSP serial interfaces.

The ADC78H89 may be operated with independent analog and digital supplies. The analog supply (AVDD) can range from +2.7V to +5.25V, and the digital supply (DVDD) can range from +2.7V to AVDD. Normal power consumption using a +3V or +5V supply is 1.5 mW and 8.3 mW, respectively. The power-down feature reduces the power consumption to just 0.3 µW using a +3V supply, or 0.5 µW using a +5V supply. The ADC78H89 is packaged in a 16-lead TSSOP package. Operation over the industrial temperature range of −40°C to +85°C is ensured.

Features

  • Seven Input Channels
  • Variable Power Management
  • Independent Analog and Digital Supplies
  • SPI™/QSPI™/MICROWIRE™/DSP Compatible
  • Packaged in 16-Lead TSSOP

Key Specifications

  • Conversion Rate: 500 KSPS
  • DNL: ± 1 LSB (max)
  • INL: ± 1 LSB (max)
  • Power Consumption
    • 3V Supply: 1.5 mW (typ)
    • 5V Supply: 8.3 mW (typ)

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Parametrics

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Part number Order Resolution (Bits) Sample rate (Max) (kSPS) Number of input channels Interface Operating temperature range (C) Package Group Approx. price (US$) Power consumption (Typ) (mW) Package size: mm2:W x L (PKG) Architecture Input type Multi-channel configuration Reference mode Features Input range (Max) (V) Input range (Min) (V) Analog voltage AVDD (Min) (V) Analog voltage AVDD (Max) (V) Digital supply (Min) (V) Digital supply (Max) (V) INL (Max) (+/-LSB) SNR (dB) THD (Typ) (dB) Rating
ADC78H89 Order now 12     500     7     Microwire (Serial I/O)
QSPI
SPI    
-40 to 85     TSSOP | 16     2.75 | 1ku     1.5     16TSSOP: 22 mm2: 4.4 x 5 (TSSOP | 16)     SAR     Single-Ended     Multiplexed     Supply         5.25     0     2.7     5.25     2.7     5.25     1     72.8     -86     Catalog    
ADC128S022 Order now 12     200     8     Microwire (Serial I/O)
QSPI
SPI    
-40 to 105     TSSOP | 16     2.25 | 1ku     1.2     16TSSOP: 22 mm2: 4.4 x 5 (TSSOP | 16)     SAR     Single-Ended     Multiplexed     Supply         5.25     0     2.7     5.25     2.7     5.25     1     73     -89     Catalog    
ADC128S052 Order now 12     500     8     Microwire (Serial I/O)
QSPI
SPI    
-40 to 125     TSSOP | 16     2.42 | 1ku     1.2     16TSSOP: 22 mm2: 4.4 x 5 (TSSOP | 16)     SAR     Single-Ended     Multiplexed     Supply         5.25     0     2.7     5.25     2.7     5.25     1     73     -90     Catalog    
ADC128S052-Q1 Order now 12     500     8     Microwire (Serial I/O)
QSPI
SPI    
-40 to 125     TSSOP | 16