Datasheet AD7366-5, AD7367-5 (Analog Devices)

True Bipolar Input, 12-/14-Bit, 2-Channel, Simultaneous Sampling SAR ADCs AD7366-5/AD7367-5 FEATURES FUNCTIONAL BLOCK DIAGRAM Dual 12-bit/14-bit, 2-channel ADCs V D DD CAPA AVCC DVCC True bipolar analog inputs Programmable input ranges REF BUF ±10 V, ±5 V, 0 V to +10 V AD7366-5/AD7367-5 ±12 V with +3 V external reference VA1 Throughput rate: 500 kSPS 12-/14-BIT Simultaneous conversion with read in less than 2 μs SUCCESSIVE OUTPUT MUX T/H APPROXIMATION DOUTA DRIVERS High analog input impedance ADC VA2 Low current consumption SCLK 5.1 mA typical in normal mode CNVST CS 320 nA typical in shutdown mode CONTROL BUSY AD7366-5 LOGIC ADDR RANGE0 72 dB SNR at 50 kHz input frequency RANGE1 12-bit no missing codes REFSEL VB1 V AD7367-5 DRIVE 76 dB SNR at 50 kHz input frequency MUX T/H 12-/14-BIT 14-bit no missing codes SUCCESSIVE OUTPUT DOUTB APPROXIMATION DRIVERS Accurate on-chip reference: 2.5 V ± 0.2% ADC –40°C to +85°C operation VB2 BUF High speed serial interface
01 0
SPI-/QSPI-/MICROWIRE-/DSP-compatible
2-
AGND AGND VSS D DGND CAPB
84
i CMOS process technology
06 Figure 1.
Available in a 24-lead TSSOP GENERAL DESCRIPTION
The devices have an on-chip 2.5 V reference that can be disabled to The AD7366-5/AD7367-51 are dual, 12-/14-bit, low power, allow the use of an external reference. If a 3 V reference is applied successive approximation analog-to-digital converters (ADCs) to the DCAPA and DCAPB pins, the AD7366-5/AD7367-5 can that feature throughput rates up to 500 kSPS. Each device contains accept a true bipolar ±12 V analog input. Minimum ±12 V VDD two ADCs, which are both preceded by a 2-channel multiplexer, and VSS supplies are required for the ±12 V input range. and a low noise, wide bandwidth, track-and-hold amplifier.
PRODUCT HIGHLIGHTS
The AD7366-5/AD7367-5 are fabricated on the Analog 1. True bipolar analog input signals can be accepted, as well Devices, Inc., industrial CMOS process (iCMOS®)2, which is as ±10 V, ±5 V, ±12 V (with external reference), and 0 V to a technology platform combining the advantages of low and +10 V unipolar signals. high voltage CMOS. The process allows the parts to accept 2. Two complete ADC functions allow simultaneous high voltage bipolar signals in addition to reducing power sampling and conversion of two channels. consumption and package size. The AD7366-5/AD7367-5 can accept true bipolar analog input signals in the ±10 V range, 3. A 500 kSPS serial interface is SPI-/QSPI™-/MICROWIRE™-/ ±5 V range, and 0 V to +10 V range. DSP-compatible.
Table 1. Related Products Device Resolution Throughput Rate No. of Channels
AD7366 12-Bit 1 MSPS Dual, 2-channel 1 Protected by U.S. Patent No. 6,731,232. 2 For analog systems designers within industrial/instrumentation equipment AD7366-5 12-Bit 500 kSPS Dual, 2-channel OEMs who need high performance ICs at higher voltage levels, iCMOS is a AD7367 14-Bit 1 MSPS Dual, 2-channel technology platform that enables the development of analog ICs capable of AD7367-5 14-Bit 500 kSPS Dual, 2-channel +30 V and operating at ±15 V supplies while allowing dramatic reductions in power consumption and package size, and increased ac and dc performance.
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Document Outline FEATURES FUNCTIONAL BLOCK DIAGRAM GENERAL DESCRIPTION PRODUCT HIGHLIGHTS TABLE OF CONTENTS REVISION HISTORY SPECIFICATIONS AD7366-5 SPECIFICATIONS AD7367-5 SPECIFICATIONS TIMING SPECIFICATIONS ABSOLUTE MAXIMUM RATINGS ESD CAUTION PIN CONFIGURATION AND FUNCTION DESCRIPTIONS TYPICAL PERFORMANCE CHARACTERISTICS TERMINOLOGY THEORY OF OPERATION CIRCUIT INFORMATION CONVERTER OPERATION ANALOG INPUTS TRANSFER FUNCTION Track-and-Hold TYPICAL CONNECTION DIAGRAM DRIVER AMPLIFIER CHOICE VDRIVE REFERENCE MODES OF OPERATION NORMAL MODE SHUTDOWN MODE POWER-UP TIMES SERIAL INTERFACE MICROPROCESSOR INTERFACING AD7366-5/AD7367-5 TO ADSP-218x AD7366-5/AD7367-5 TO ADSP-BF53x AD7366-5/AD7367-5 TO TMS320VC5506 AD7366-5/AD7367-5 TO DSP563xx APPLICATION HINTS LAYOUT AND GROUNDING EVALUATING THE AD7366-5/AD7367-5 OUTLINE DIMENSIONS ORDERING GUIDE