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ADS7950SDBTG4 Datasheet(PDF) 1 Page - Texas Instruments |
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ADS7950SDBTG4 Datasheet(HTML) 1 Page - Texas Instruments |
1 / 70 page MXO AINP Ch0 Chn (1) Ch2 Ch1 High input impedance PGA (or non inverting buffer such as THS4031) GPIO1 GPIO2 GPIO3 PGA Gain Control GPIO0 high-alarm low-alarm SDI SCLK CS SDO To Host REF REF5025 o/p 10 µF ADC Product Folder Sample & Buy Technical Documents Tools & Software Support & Community ADS7950, ADS7951, ADS7952, ADS7953, ADS7954, ADS7955 ADS7956, ADS7957, ADS7958, ADS7959, ADS7960, ADS7961 SLAS605B – JUNE 2008 – REVISED JULY 2015 ADS79xx 12/10/8-Bit, 1 MSPS, 16/12/8/4-Channel, Single-Ended, MicroPower, Serial Interface ADCs 1 Features 3 Description The ADS79xx is a 12/10/8-bit multichannel analog-to- 1 • 1-MHz Sample Rate Serial Devices digital converter family. The following table shows all • Product Family of 12/10/8-Bit Resolution twelve devices from this product family. • Zero Latency The devices include a capacitor based SAR A/D • 20-MHz Serial Interface converter with inherent sample and hold. • Analog Supply Range: 2.7 to 5.25 V The devices accept a wide analog supply range from • I/O Supply Range: 1.7 to 5.25 V 2.7 V to 5.25 V. Very low power consumption makes • Two SW Selectable Unipolar, Input Ranges: 0 to these devices suitable for battery-powered and isolated power supply applications. 2.5 V and 0 to 5 V • Auto and Manual Modes for Channel Selection A wide 1.7-V to 5.25-V I/O supply range facilitates a glue-less interface with the most commonly used • 12, 8, 4-Channel Devices can Share 16 Channel CMOS digital hosts. Device Footprint • Two Programmable Alarm Levels per Channel The serial interface is controlled by CS and SCLK for easy connection with microprocessors and DSP. • Four Individually Configurable GPIOs for TSSOP package devices. One GPIO for QFN devices The input signal is sampled with the falling edge of CS. It uses SCLK for conversion, serial data output, • Typical Power Dissipation: 14.5 mW (+VA = 5 V, and reading serial data in. The devices allow auto +VBD = 3V) at 1 MSPS sequencing of preselected channels or manual • Power-Down Current (1 μA) selection of a channel for the next conversion cycle. • Input Bandwidth (47 MHz at 3 dB) There are two software selectable input ranges (0 V • 38-,30-Pin TSSOP and 32-,24-Pin QFN Packages to 2.5 V and 0 V to 5 V), four individually configurable GPIOs ( in case of TSSOP package devices), and 2 Applications two programmable alarm thresholds per channel. These features make the devices suitable for most • PLC / IPC data acquisition applications. • Battery Powered Systems The devices offer an attractive power-down feature. • Medical Instrumentation This is extremely useful for power saving when the • Digital Power Supplies device is operated at lower conversion speeds. • Touch Screen Controllers The 16/12-channel devices from this family are • High-Speed Data Acquisition Systems available in a 38-pin TSSOP and 32 pin VQFN • High-Speed Closed-Loop Systems package and the 4/8-channel devices are available in a 30-pin TSSOP and 24 pin VQFN packages. Detailed Block Diagram Device Information(1) PART NUMBER PACKAGE BODY SIZE (NOM) TSSOP (30) 7.80 mm × 4.40 mm VQFN (24) 4.00 mm × 4.00 mm ADS79xx TSSOP (38) 9.70 mm × 4.40 mm VQFN (32) 5.00 mm × 5.00 mm (1) For all available packages, see the orderable addendum at the end of the data sheet. 1 An IMPORTANT NOTICE at the end of this data sheet addresses availability, warranty, changes, use in safety-critical applications, intellectual property matters and other important disclaimers. PRODUCTION DATA. |
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