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PDF AD7609 Data sheet ( Hoja de datos )
| Número de pieza | AD7609 | |
| Descripción | 8-Channel Differential DAS | |
| Fabricantes | Analog Devices | |
| Logotipo |  |
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Data Sheet
8-Channel Differential DAS with 18-Bit,
Bipolar, Simultaneous Sampling ADC
AD7609
FEATURES
8 simultaneously sampled inputs
True differential inputs
True bipolar analog input ranges: ±10 V, ±5 V
Single 5 V analog supply and 2.3 V to 5.25 V VDRIVE
Fully integrated data acquisition solution
Analog input clamp protection
Input buffer with 1 MΩ analog input impedance
Second-order antialiasing analog filter
On-chip accurate reference and reference buffer
18-bit ADC with 200 kSPS on all channels
Oversampling capability with digital filter
Flexible parallel/serial interface
SPI/QSPI™/MICROWIRE™/DSP compatible
Performance
7 kV ESD rating on analog input channels
98 dB SNR, −107 dB THD
Dynamic range: up to 105 dB typical
Low power: 100 mW
Standby mode: 25 mW
64-lead LQFP package
APPLICATIONS
Power line monitoring and protection systems
Multiphase motor control
Instrumentation and control systems
Multiaxis positioning systems
Data acquisition systems (DAS)
COMPANION PRODUCTS
External References: ADR421, ADR431
Digital Isolators: ADuM1402, ADuM5000, ADuM5402
Power: ADIsimPower, Supervisor Parametric Search
Additional companion products on the AD7609 product page
Table 1. High Resolution, Bipolar Input, Simultaneous
Sampling DAS Solutions
Single-
True
Number of
Ended
Differential Simultaneous
Resolution Inputs
Inputs
Sampling Channels
18 Bits
16 Bits
14 Bits
AD7608
AD7606
AD7606-6
AD7606-4
AD7607
AD76091
8
8
6
4
8
www.DataSheet.co.kr
1 Patent pending.
FUNCTIONAL BLOCK DIAGRAM
AVCC
AVCC
REGCAP REGCAP REFCAPB REFCAPA
V1+ CLAMP 1MΩ RFB
V1–
CLAMP
1MΩ
SECOND- T/H
RFB ORDER LPF
V2+ CLAMP 1MΩ RFB
V2–
CLAMP
1MΩ
SECOND- T/H
RFB ORDER LPF
V3+ CLAMP 1MΩ RFB
V3–
CLAMP
1MΩ
SECOND- T/H
RFB ORDER LPF
V4+ CLAMP 1MΩ RFB
V4–
CLAMP
1MΩ
SECOND- T/H
RFB ORDER LPF
V5+ CLAMP 1MΩ RFB
V5–
CLAMP
1MΩ
SECOND- T/H
RFB ORDER LPF
V6+ CLAMP 1MΩ RFB
V6–
CLAMP
1MΩ
SECOND- T/H
RFB ORDER LPF
V7+ CLAMP 1MΩ RFB
V7–
CLAMP
1MΩ
SECOND- T/H
RFB ORDER LPF
V8+ CLAMP 1MΩ RFB
V8–
CLAMP
1MΩ
SECOND- T/H
RFB ORDER LPF
2.5V
LDO
2.5V
LDO
2.5V
REF
8:1
MUX
SERIAL
18-BIT
SAR
DIGITAL
FILTER
PARALLEL/
SERIAL
INTERFACE
AD7609
CLK OSC
CONTROL
INPUTS
PARALLEL
AGND
CONVST A CONVST B RESET RANGE
Figure 1.
REFIN/REFOUT
REF SELECT
AGND
OS 2
OS 1
OS 0
DOUTA
DOUTB
RD/SCLK
CS
PAR/SER SEL
VDRIVE
DB[15:0]
BUSY
FRSTDATA
Rev. A
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.
Trademarksandregisteredtrademarksarethepropertyoftheirrespectiveowners.
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 ©2011–2012 Analog Devices, Inc. All rights reserved.
Datasheet pdf - http://www.DataSheet4U.net/
1 page  
Data Sheet
Parameter
ANALOG INPUT
Differential Input Voltage Ranges
Absolute Voltage Input
Common-Mode Input Range
CMRR
Analog Input Current
Input Capacitance7
Input Impedance
REFERENCE INPUT/OUTPUT
Reference Input Voltage Range
DC Leakage Current
Input Capacitance7
Reference Output Voltage
Reference Temperature Coefficient
LOGIC INPUTS
Input High Voltage (VINH)
Input Low Voltage (VINL)
Input Current (IIN)
Input Capacitance (CIN)7
LOGIC OUTPUTS
Output High Voltage (VOH)
Output Low Voltage (VOL)
Floating-State Leakage Current
Floating-State Output Capacitance7
Output Coding
CONVERSION RATE
Conversion Time
Track-and-Hold Acquisition Time
Throughput Rate
POWER REQUIREMENTS
AVCC
VDRIVE
ITOTAL
Normal Mode (Static)
Normal Mode (Operational)8
Standby Mode
Shutdown Mode
Test Conditions/Comments
VIN = Vx+ − (Vx−)
RANGE = 1; ±10 V
RANGE = 0; ±5 V
±10 V range, see the Analog Input Clamp
Protection section
±5 V range, see the Analog Input Clamp
Protection section
10 V, see Figure 28
5 V, see Figure 28
REF SELECT = 1
REFIN/REFOUT
ISOURCE = 100 µA
ISINK = 100 µA
www.DataSheet.co.kr
Twos complement
All eight channels included
Per channel, all eight channels included
Digital inputs = 0 V or VDRIVE
fSAMPLE = 200 kSPS
AD7609
Min Typ Max Unit
−20 +20 V
−10 +10 V
−10 +10 V
−5 +5 V
−4 ±5 +4 V
−70 dB
5.4 µA
2.5 µA
5 pF
1 MΩ
2.475
2.5
7.5
2.49/
2.505
±10
2.525
±1
V
µA
pF
V
ppm/°C
0.7 × VDRIVE
5
0.3 × VDRIVE
±2
V
V
µA
pF
VDRIVE − 0.2
±1
5
0.2
±20
V
V
µA
pF
4
1
200
µs
µs
kSPS
4.75 5.25 V
2.3 5.25 V
16 22
20 28.5
58
2 11
mA
mA
mA
µA
Rev. A | Page 5 of 36
Datasheet pdf - http://www.DataSheet4U.net/
5 Page 
Data Sheet
ABSOLUTE MAXIMUM RATINGS
TA = 25°C, unless otherwise noted.
Table 4.
Parameter
AVCC to AGND
VDRIVE to AGND
Analog Input Voltage to AGND1
Digital Input Voltage to AGND
Digital Output Voltage to AGND
REFIN to AGND
Input Current to Any Pin Except
Supplies1
Operating Temperature Range
B Version
Storage Temperature Range
Junction Temperature
Pb/SN Temperature, Soldering
Reflow (10 sec to 30 sec)
Pb-Free Temperature, Soldering Reflow
ESD (All Pins Except Analog Inputs)
ESD (Analog Input Pins Only)
Rating
−0.3 V to +7 V
−0.3 V to AVCC + 0.3 V
±16.5 V
−0.3 V to VDRIVE + 0.3 V
−0.3 V to VDRIVE + 0.3 V
−0.3 V to AVCC + 0.3 V
±10 mA
−40°C to +85°C
−65°C to +150°C
150°C
240(+0)°C
260(+0)°C
2 kV
7 kV
1 Transient currents of up to 100 mA do not cause SCR latch-up.
AD7609
Stresses above those listed under Absolute Maximum Ratings
may cause permanent damage to the device. This is a stress
rating only; functional operation of the device at these or any
other conditions above those indicated in the operational
section of this specification is not implied. Exposure to absolute
maximum rating conditions for extended periods may affect
device reliability.
THERMAL RESISTANCE
θJA is specified for the worst-case conditions, that is, a device
soldered in a circuit board for surface-mount packages. These
specifications apply to a 4-layer board.
Table 5. Thermal Resistance
Package Type
θJA θJC Unit
64-Lead LQFP
45 11 °C/W
ESD CAUTION
www.DataSheet.co.kr
Rev. A | Page 11 of 36
Datasheet pdf - http://www.DataSheet4U.net/
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet AD7609.PDF ] | |
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