AD7366-5BRUZ-REEL7

Preliminary Technical Data FEATURES Dual 12-bit, 2-channel ADC True Bipolar Analog Inputs Programmable Input Ranges ±10, ±5, 0 to 10 V Throughput rate: 1 MSPS Simultaneous conversion with read in less than 1μs Specified for VCC of 5 V±5% Low current consumption: 5.65 mA max Wide input bandwidth 70 dB SNR at 50 kHz input frequency On-chip reference: 2.5 V –40°C to +85°C operation High speed serial interface SPI®/QSPI™/MICROWIRE™/DSP compatible iCMOSTM Process Technology 24-lead TSSOP package For 14 bit version see AD7367 True Bipolar Input, Dual 1μs, 12-Bit, 2-Channel SAR ADC AD7366 FUNCTIONAL BLOCK DIAGRAM VDD DCAP A AVCC DVCC REF BUF AD7366 12-BIT SUCCESSIVE APPROXIMATION ADC VA1 MUX VA2 T/H OUTPUT DRIVERS DOUTA SCLK CONVST CS CONTROL LOGIC BUSY ADDR RANGE0 RANGE1 REFSEL VDRIVE VB1 MUX VB2 T/H 12-BIT SUCCESSIVE APPROXIMATION ADC OUTPUT DRIVERS DOUTB GENERAL DESCRIPTION The AD7366 is a dual, 12-bit, high speed, low power, successive approximation ADC that features throughput rates up to 1 MSPS. The device contains two ADCs, each preceded by a 2channel multiplexer, and a low noise, wide bandwidth trackand-hold amplifier that can handle input frequencies in excess of 10 MHz. The AD7366 is fabricated on Analog Devices’ Industrial CMOS process, iCMOS, a technology platform combining the advantages of low and high voltage CMOS, bipolar and high voltage DMOS processes. The process allows the AD7366 to accept high voltage bipolar signals in addition to reducing power consumption and package size. The AD7366 can accept true bipolar analog input signals in the ±10 V range, ±5 V range and 0 to 10 V range. The AD7366 has an on-chip 2.5 V reference that can be overdriven if an external reference is preferred. The AD7366 is available in a 24-lead TSSOP package. iCMOSTM Process Technology For analog systems designers within industrial/instrumentation equipment OEMs who need high performance ICs at higher-voltage levels, iCMOS is a technology platform that enables the development of analog ICs capable of 30V and operating at +/- 15V supplies while allowing dramatic reductions in power consumption and package size, and increased AC and DC performance. 1 AGND AGND BUF VSS DCAP B DGND Figure 1 Table 1.Related Products Device Number AD7367 AD7366-5 AD7367-5 Resolution 14-Bit 12-Bit 14-Bit Throughput Rate 1 MSPS 500 KSPS 500 KSPS Number of Channels Dual, 2-ch Dual, 2-ch Dual, 2-ch 1 Protected by U.S. Patent No. 6,681,332. Rev. PrG Information furnished by Analog Devices is believed to be accurate and reliable. However, no responsibility is assumed by Analog Devices for its use, nor for any infringements of patents or other rights of third parties that may result from its use. Specifications subject to change without notice. No license is granted by implication or otherwise under any patent or patent rights of Analog Devices. Trademarks and registered trademarks are the property of their respective owners. One Technology Way, P.O. Box 9106, Norwood, MA 02062-9106, U.S.A. Tel: 781.329.4700 www.analog.com Fax: 781.461.3113 ©2006 Analog Devices, Inc. All rights reserved. AD7366 TABLE OF CONTENTS FEATURES ........................................................................................ 1 GENERAL DESCRIPTION ............................................................ 1 FUNCTIONAL BLOCK DIAGRAM............................................. 1 Specifications..................................................................................... 3 Timing Specifications .................................................................. 6 Absolute Maximum Ratings............................................................ 7 ESD Caution.................................................................................. 7 Pin Configuration and Function Descriptions............................. 8 Terminology .................................................................................... 10 Theory of operation ................................................................... 11 Analog Inputs.............................................................................. 12 VDRIVE ............................................................................................ 13 Reference ..................................................................................... 13 Modes of Operation ....................................................................... 14 NORMAL MODE ...................................................................... 14 Shut-down Mode ........................................................................ 14 POWER-UP TIMES................................................................... 15 Serial Interface ................................................................................ 16 Outline Dimensions ....................................................................... 17 Ordering Guide............................................................................... 17 Preliminary Technical Data Rev. PrG | Page 2 of 17 Preliminary Technical Data SPECIFICATIONS AD7366 AVCC = DVCC =4.75 V to 5.25 V, VDD = 11.5 V to 16.5 V, VSS = -11.5 V to −16.5 V, VDRIVE = 2.7 V to 5.25V, fSAMPLE = 1.12MSPS, fSCLK = 48MHz, VREF = 2.5 V Internal/External; TA = TMIN to TMAX, unless otherwise noted1. Table 2. Parameter DYNAMIC PERFORMANCE Signal-to-Noise Ratio (SNR)2 Signal-to-Noise + Distortion Ratio (SINAD)2 Total Harmonic Distortion (THD) 2 Spurious Free Dynamic Range (SFDR) 2 Intermodulation Distortion (IMD) 2 Second Order Terms Third Order Terms Channel-to-Channel Isolation2 SAMPLE AND HOLD Aperture Delay3 Aperture Jitter3 Aperture Delay Matching3 Full Power Bandwidth DC ACCURACY Resolution Integral Nonlinearity2 Differential Nonlinearity2 Positive Full Scale Error2 Positive Full Scale Error Match2 Zero Code Error2 Zero Code Error Match2 Negative Full Scale Error2 Negative Full Scale Error Match2 ANALOG INPUT Input Voltage Ranges (Programmed via RANGE Pins) Min Typ Max Unit Test Conditions/ Comments fIN = 50 kHz sine wave; 71 70 -77 -75 -88 -88 -88 10 40 100 50 15 12 ±1 ±0.99 ±2 ±0.5 ±5 ±1 ±2 ±0.5 ±10 ±5 0 to 10V dB dB dB dB fa = 49 kHz, fb = 51 kHz dB dB dB ns ps ps MHz MHz Bits LSB LSB LSB LSB LSB LSB LSB LSB V V V µA p pF pF KΩ MΩ KΩ MΩ @ 3 dB, ±10 V range @ 0.1 dB, ±10 V range Guaranteed no missed codes to 12 bits VDD = +11.5V min, VSS = −11.5V min, VCC = 4.75V to 5.25V VDD = +11.5V min, VSS = −11.5V min, VCC = 4.75V to 5.25V VDD = +11.5V min, VSS = -11.5 min, VCC = 4.75V to 5.25V When in track, ±10 V range When in track, ±5 V or 0 to 10 V range When in hold For ±10V @1.12 Msps For ±10V @100 Ksps For ±5 / 0-10V @1.12 Msps For ±5 / 0-10V @100Ksps DC Leakage Current Input Capacitance ±1 12 15 3 260 2.3 125 1.1 Input impedance Rev. PrG | Page 3 of 17 AD7366 Parameter REFERENCE INPUT/OUTPUT Reference Output Voltage4 Reference Input Voltage Range DC Leakage Current Input Capacitance VREFA, VREFB Output Impedance Reference Temperature Coefficient VREF Noise LOGIC INPUTS Input High Voltage, VINH Input Low Voltage, VINL Input Current, IIN Input Capacitance, CIN3 LOGIC OUTPUTS Output High Voltage, VOH Output Low Voltage, VOL Floating State Leakage Current Floating State Output Capacitance3 CONVERSION RATE Conversion Time Track/Hold Acquisition Time3 Throughput Rate POWER REQUIREMENTS VCC VDD VSS VDRIVE Normal Mode (Static) IDD ISS ICC Normal Mode (Operational) IDD ISS ICC Shut-Down Mode IDD ISS ICC Power Dissipation Normal Mode (Operational) Shut-Down Shut-Down 1 2 Preliminary Technical Data Min 2.5 +2.5 25 8 20 10 20 0.7× VDRIVE 0.8 ±1 5 VDRIVE − 0.2 0.4 ±1 10 Typ Max 2.5 3.0 ±1 Unit V V µA pF Ω ppm/°C ppm/°C µVRMS V min V max µA max pF typ V V µA pF Test Conditions/ Comments ±0.2% max @ 25°C External reference applied to Pin VREFA/Pin VREFB VIN = 0 V or VDRIVE 610 140 1.12 1 4.75 +11.5 -16.5 2.7 5.25 +16.5 -11.5 5.25 1 1 1.8 925 725 4 1 1 1 48.23 15 38.25 ns ns MSPS MSPS V V V V µA µA mA µA µA mA µA µA µA mW µW µW Full-scale step input; For 4.75V≤VDRIVE≤5.25V, fSCLK = 48MHz For 2.7V≤VDRIVE