ADS7886 2.35V-5.25V, 12 bit, 1MSPS, Serial ADC | TI.com

ADS7886 (ACTIVE) 2.35V-5.25V, 12 bit, 1MSPS, Serial ADC

 

Description

The ADS7886 is a 12-bit, 1-MSPS analog-to-digital converter (ADC). The device includes a capacitor based SAR A/D converter with inherent sample and hold. The serial interface in each device is controlled by the CS and SCLK signals for glueless connections with microprocessors and DSPs. The input signal is sampled with the falling edge of CS, and SCLK is used for conversion and serial data output.

The device operates from a wide supply range from 2.35 V to 5.25 V. The low power consumption of the device makes it suitable for battery-powered applications. The device also includes a power down feature for power saving at lower conversion speeds.

The high level of the digital input to the device is not limited to device VDD. This means the digital input can go as high as 5.25 V when device supply is 2.35 V. This feature is useful when digital signals are coming from other circuit with different supply levels. Also this relaxes restriction on power-up sequencing.

The ADS7886 is available in 6-pin SOT-23 and SC70 packages and is specified for operation from –40°C to 125°C.

Features

  • 1-MHz Sample Rate Serial Device
  • 12-Bit Resolution
  • Zero Latency
  • 20-MHz Serial Interface
  • Supply Range: 2.35 V to 5.25 V
  • Typical Power Dissipation at 1 MSPS:
    • 3.9 mW at 3-V VDD
    • 7.5 mW at 5-V VDD
  • INL ±1.25 LSB Maximum, ±0.65 LSB (Typical)
  • DNL ±1 LSB Maximum, +0.4 / –0.65 LSB (Typical)
  • Typical AC Performance:
    72.25-dB SINAD, –84-dB THD
  • Unipolar Input Range: 0 V to VDD
  • Power Down Current: 1 µA
  • Wide Input Bandwidth: 15 MHz at 3 dB
  • 6-Pin SOT-23 and SC70 Packages

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
ADS7886 Order now 12     1000     1     SPI     -40 to 125     SC70 | 6
SOT-23 | 6    
1.73 | 1ku     13.5     6SC70: 4 mm2: 2.1 x 2 (SC70 | 6)
6SOT-23: 5 mm2: 1.6 x 2.9 (SOT-23 | 6)    
SAR     Single-Ended         Supply     Small Size     5.25     0     2.35     5.25     2.35     5.25     1.25     72.25     -84     Catalog