ADCS7478 1MSPS, 12-/10-/8-Bit A/D Converters in SOT-23 & LLP | TI.com

ADCS7478 (ACTIVE) 1MSPS, 12-/10-/8-Bit A/D Converters in SOT-23 & LLP

 

Description

The ADCS7476, ADCS7477, and ADCS7478 devices are low power, monolithic CMOS 12-, 10-, and 8-bit analog-to-digital converters that operate at 1 MSPS. The ADCS747x devices are a drop-in replacement for Analog Device’s AD747x. Each device is based on a successive approximation register architecture with internal track-and-hold. The serial interface is compatible with several standards, such as SPI, QSPI, MICROWIRE, and many common DSP serial interfaces.

The ADCS747x uses the supply voltage as a reference, enabling the device to operate with a full-scale input range of 0 to VDD. The conversion rate is determined from the serial clock (SCLK) speed. These converters offer a shutdown mode, which can be used to trade throughput for power consumption. The ADCS747x is operated with a single supply that can range from 2.7 V to 5.25 V. Normal power consumption during continuous conversion, using a 3-V or 5-V supply, is 2 mW or 10 mW respectively. The power-down feature, which is enabled by a chip select (CS) pin, reduces the power consumption to under 5 µW using a 5-V supply. All three converters are available in a 6-pin SOT-23 package, which provides an extremely small footprint for applications where space is a critical consideration. These products are designed for operation over the automotive and extended industrial temperature range of –40°C to 125°C.

Features

  • Variable Power Management
  • Packaged in 6-Pin SOT-23
  • Power Supply Used as Reference
  • Single 2.7-V to 5.25-V Supply Operation
  • Compatible With SPI™, QSPI™, MICROWIRE™,
    and DSP
  • Key Specifications
    • Resolution With No Missing Codes (12-Bit, 10-
      Bit, and 8-Bit)
    • Conversion Rate: 1 MSPS
    • DNL: 0.5, –0.3 LSB (Typical)
    • INL: ±0.4 LSB (Typical)
    • Power Consumption:
      • 3-V Supply: 2 mW (Typical)
      • 5-V Supply: 10 mW (Typical)

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
ADCS7478 Order now 8     1000     1     Microwire (Serial I/O)
QSPI
SPI    
-40 to 85     SOT-23 | 6     1.09 | 1ku     2     6SOT-23: 5 mm2: 1.6 x 2.9 (SOT-23 | 6)     SAR     Single-Ended         Supply     Small Size     5.25     0     2.7     5.25     2.7     5.25     1     72.5     -80     Catalog    
ADC081S021 Order now 8     200     1     Microwire (Serial I/O)
QSPI
SPI    
-40 to 85     SOT-23 | 6
WSON | 6    
0.61 | 1ku     1.3     6SOT-23: 5 mm2: 1.6 x 2.9 (SOT-23 | 6)
See datasheet (WSON)    
SAR     Single-Ended         Supply     Small Size     5.25     0     2.7     5.25     2.7     5.25     0.3     49.6     -77     Catalog    
ADC081S051 Samples not available 8     500     1     Microwire (Serial I/O)
QSPI
SPI    
-40 to 85     SOT-23 | 6
WSON | 6    
0.94 | 1ku     1.6     6SOT-23: 5 mm2: 1.6 x 2.9 (SOT-23 | 6)
See datasheet (WSON)    
SAR     Single-Ended         Supply     Small Size     5.25     0     2.7     5.25     2.7     5.25     0.3     49.6     -77     Catalog    
ADC081S101 Order now 8     1000     1