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PDF AD7607 Data sheet ( Hoja de datos )
| Número de pieza | AD7607 | |
| Descripción | 8-Channel DAS | |
| Fabricantes | Analog Devices | |
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Data Sheet
8-Channel DAS with 14-Bit, Bipolar Input,
Simultaneous Sampling ADC
AD7607
FEATURES
8 simultaneously sampled 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
14-bit ADC with 200 kSPS on all channels
Flexible parallel/serial interface
SPI/QSPI™/MICROWIRE™/DSP compatible
Pin-compatible solutions from 14 bits to 18 bits
Performance
7 kV ESD rating on analog input channels
Fast throughput rate: 200 kSPS for all channels
85.5 dB SNR at 50 kSPS
INL ±0.25 LSB, DNL ±0.25 LSB
Low power: 100 mW at 200 kSPS
Standby mode: 25 mW typical
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)
Table 1. High Resolution, Bipolar Input, Simultaneous
Sampling DAS Solutions
Resolution
Single-Ended
Inputs
Number of Simultaneous
Sampling Channels
18 Bits
AD7608
8
16 Bits
AD7606
8
AD7606-6
6
AD7606-4
4
14 Bits
AD7607
8
V1
V1GND
V2
V2GND
V3
V3GND
V4
V4GND
V5
V5GND
V6
V6GND
V7
V7GND
V8
V8GND
1MΩ
CLAMP
CLAMP
1MΩ
1MΩ
CLAMP
CLAMP
1MΩ
CLAMP 1MΩ
CLAMP
1MΩ
CLAMP 1MΩ
CLAMP
1MΩ
1MΩ
CLAMP
CLAMP
1MΩ
1MΩ
CLAMP
CLAMP
1MΩ
CLAMP 1MΩ
CLAMP
1MΩ
CLAMP 1MΩ
CLAMP
1MΩ
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FUNCTIONAL BLOCK DIAGRAM
AVCC
AVCC
REGCAP REGCAP REFCAPB REFCAPA
RFB
RFB
SECOND-
ORDER LPF
T/H
RFB
RFB
SECOND-
ORDER LPF
T/H
RFB
RFB
SECOND-
ORDER LPF
T/H
RFB
RFB
SECOND-
ORDER LPF
T/H
RFB
RFB
SECOND-
ORDER LPF
T/H
RFB
RFB
SECOND-
ORDER LPF
T/H
RFB
RFB
SECOND-
ORDER LPF
T/H
RFB
RFB
SECOND-
ORDER LPF
T/H
2.5V
LDO
2.5V
LDO
2.5V
REF
8:1
MUX
14-BIT
SAR
SERIAL
DIGITAL
FILTER
PARALLEL/
SERIAL
INTERFACE
AD7607
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/BYTE SEL
VDRIVE
DB[15:0]
BUSY
FRSTDATA
Rev. B
Information furnished by Analog Devices is believed to be accurate and reliable. However, no
responsibilityisassumedbyAnalogDevices for itsuse,nor foranyinfringementsofpatentsor 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 ©2010-2012 Analog Devices, Inc. All rights reserved.
Datasheet pdf - http://www.DataSheet4U.net/
1 page  
Data Sheet
AD7607
Parameter
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
Power Dissipation8
Normal Mode (Static)
Normal Mode (Operational)
Standby Mode
Shutdown Mode
Test Conditions/Comments
REF SELECT = 1
REFIN/REFOUT
ISOURCE = 100 µA
ISINK = 100 µA
Twos complement
All eight channels included; see Table 3
All eight channels included
Digital inputs = 0 V or VDRIVE
www.DataSheet.co.kr
Min Typ
2.475
2.5
7.5
2.49/
2.505
±10
0.9 × VDRIVE
5
VDRIVE − 0.2
±1
5
Max Unit
2.525
±1
V
µA
pF
V
ppm/°C
0.1 × VDRIVE
±2
V
V
µA
pF
V
0.2 V
±20 µA
pF
4
1
200
µs
µs
kSPS
4.75 5.25 V
2.3 5.25 V
16 22
20 27
58
26
mA
mA
mA
µA
80 115.5
100 142
25 42
10 31.5
mW
mW
mW
µW
1 Temperature range for the B version is −40°C to +85°C.
2 See the Terminology section.
3 This specification applies when reading during a conversion or after a conversion. If reading during a conversion in parallel mode with VDRIVE = 5 V, SNR typically reduces by 1.5 dB
and THD typically reduces by 3 dB.
4 LSB means least significant bit. With ±5 V input range, 1 LSB = 610.35 µV. With ±10 V input range, 1 LSB = 1.22 mV.
5 This specification includes the full temperature range variation and contribution from the internal reference buffer but does not include the error contribution from
the external reference.
6 Bipolar zero code error is calculated with respect to the analog input voltage.
7 Sample tested during initial release to ensure compliance.
8 Operational power/current figure includes contribution when running in oversampling mode.
Rev. B | Page 5 of 32
Datasheet pdf - http://www.DataSheet4U.net/
5 Page 
Data Sheet
PIN CONFIGURATION AND FUNCTION DESCRIPTIONS
AD7607
64 63 62 61 60 59 58 57 56 55 54 53 52 51 50 49
ANALOG INPUT
DECOUPLING CAP PIN
POWER SUPPLY
AVCC 1
AGND 2
OS 0 3
OS 1 4
GROUND PIN
OS 2 5
DATA OUTPUT
PAR/SER/BYTE SEL 6
DIGITAL OUTPUT
DIGITAL INPUT
REFERENCE INPUT/OUTPUT
STBY 7
RANGE 8
CONVST A 9
CONVST B 10
RESET 11
RD/SCLK 12
CS 13
BUSY 14
FRSTDATA 15
DB0 16
PIN 1
AD7607
TOP VIEW
(Not to Scale)
48 AVCC
47 AGND
46 REFGND
45 REFCAPB
44 REFCAPA
43 REFGND
42 REFIN/REFOUT
41 AGND
40 AGND
39 REGCAP
38 AVCC
37 AVCC
36 REGCAP
35 AGND
34 REF SELECT
33 DB15/BYTE SEL
17 18 19 20 21 22 23 24 25 26 27 28 29 30 31 32
Table 6. Pin Function Descriptions
Pin No.
Type1
Mnemonic
1, 37, 38, 48 P
AVCC
2, 26, 35, 40, P
41, 47
AGND
5, 4, 3
DI
OS[2:0]
6 DI PAR/SER/
BYTE SEL
7 DI STBY
8 DI RANGE
Figure 8. Pin Configuration
Description
Analog Supply Voltage, 4.75 V towww.DataSheet.co.kr 5.25 V. This supply voltage is applied to the internal front-end
amplifiers and to the ADC core. These supply pins should be decoupled to AGND.
Analog Ground. These pins are the ground reference points for all analog circuitry on the AD7607.
All analog input signals and external reference signals should be referred to these pins. All six of
these AGND pins should connect to the AGND plane of a system.
Oversampling Mode Pins. Logic inputs. These inputs are used to select the oversampling ratio. OS
2 is the MSB control bit, and OS 0 is the LSB control bit. See the Digital Filter section for more
details about the oversampling mode of operation and Table 9 for oversampling bit decoding.
Parallel/Serial/Byte Interface Selection Input. Logic input. If this pin is tied to a logic low, the parallel
interface is selected. If this pin is tied to a logic high, the serial interface is selected. Parallel byte
interface mode is selected when this pin is logic high and DB15/BYTE SEL is logic high (see Table 8).
In serial mode, the RD/SCLK pin functions as the serial clock input. The DB7/DOUTA pin and the
DB8/DOUTB pin function as serial data outputs. When the serial interface is selected, the DB[15:9] and
DB[6:0] pins should be tied to ground.
In byte mode, DB15, in conjunction with PAR/SER/BYTE SEL, is used to select the parallel byte mode
of operation (see Table 8). DB14 is used as the HBEN pin. DB[7:0] transfer the 16-bit conversion
results in two RD operations, with DB0 as the LSB of the data transfers.
Standby Mode Input. This pin is used to place the AD7607 into one of two power-down modes:
standby mode or shutdown mode. The power-down mode entered depends on the state of the
RANGE pin, as shown in Table 7. When in standby mode, all circuitry, except the on-chip reference,
regulators, and regulator buffers, is powered down. When in shutdown mode, all circuitry is powered
down.
Analog Input Range Selection. Logic input. The polarity on this pin determines the input range
of the analog input channels. If this pin is tied to a logic high, the analog input range is ±10 V for all
channels. If this pin is tied to a logic low, the analog input range is ±5 V for all channels. A logic
change on this pin has an immediate effect on the analog input range. Changing this pin during
a conversion is not recommended. See the Analog Input section for more information.
Rev. B | Page 11 of 32
Datasheet pdf - http://www.DataSheet4U.net/
11 Page | ||
| Páginas | Total 30 Páginas | |
| PDF Descargar | [ Datasheet AD7607.PDF ] | |
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