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AD7938BCPZ Folha de dados(PDF) 6 Page - Analog Devices

Nome de Peças AD7938BCPZ
Descrição Electrónicos  8-Channel, 1.5 MSPS, 12-Bit and 10-Bit Parallel ADCs with a Sequencer
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Fabricante Electrônico  AD [Analog Devices]
Página de início  http://www.analog.com
Logo AD - Analog Devices

AD7938BCPZ Folha de dados(HTML) 6 Page - Analog Devices

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AD7938/AD7939
Data Sheet
Rev. C | Page 6 of 36
Parameter
Value1
Unit
Test Conditions/Comments
REFERENCE INPUT/OUTPUT
VREF Input Voltage5
2.5
V
±1% for specified performance
DC Leakage Current4
±1
µA max
External reference applied to pin
VREFOUT Output Voltage
2.5
V
±0.2% max @ 25°C
VREFOUT Temperature Coefficient
25
ppm/°C max
5
ppm/°C typ
VREF Noise
10
µV typ
0.1 Hz to 10 Hz bandwidth
130
µV typ
0.1 Hz to 1 MHz bandwidth
VREF Output Impedance
10
Ω typ
VREF Input Capacitance
15
pF typ
When in track
25
pF typ
When in hold
LOGIC INPUTS
Input High Voltage, VINH
2.4
V min
Input Low Voltage, VINL
0.8
V max
Input Current, IIN
±5
µA max
Typically 10 nA, VIN = 0 V or VDRIVE
Input Capacitance, CIN4
10
pF typ
LOGIC OUTPUTS
Output High Voltage, VOH
2.4
V min
ISOURCE = 200 µA
Output Low Voltage, VOL
0.4
V max
ISINK = 200 µA
Floating-State Leakage Current
±3
µA max
Floating-State Output Capacitance4
10
pF typ
Output Coding
Straight (natural) binary
CODING bit = 0
Twos complement
CODING bit =1
CONVERSION RATE
Conversion Time
t2 + 13 tCLKIN
ns
Track-and-Hold Acquisition Time
125
ns max
Full-scale step input
80
ns typ
Sine wave input
Throughput Rate
1.5
MSPS max
POWER REQUIREMENTS
VDD
2.7/5.25
V min/max
VDRIVE
2.7/5.25
V min/max
IDD6
Digital inputs = 0 V or VDRIVE
Normal Mode (Static)
0.8
mA typ
VDD = 2.7 V to 5.25 V, SCLK on or off
Normal Mode (Operational)
2.7
mA max
VDD = 4.75 V to 5.25 V
2.0
mA max
VDD = 2.7 V to 3.6 V
Autostandby Mode
0.3
mA typ
fSAMPLE = 100 kSPS, VDD = 5 V
160
µA typ
Static
Full/Autoshutdown Mode (Static)
2
µA max
SCLK on or off
Power Dissipation
Normal Mode (Operational)
13.5
mW max
VDD = 5 V
6
mW max
VDD = 3 V
Autostandby Mode (Static)
800
µW typ
VDD = 5 V
480
µW typ
VDD = 3 V
Full/Autoshutdown Mode (Static)
10
µW max
VDD = 5 V
6
µW max
VDD = 3 V
1
Temperature range is −40°C to +85°C.
2
See the Terminology section.
3
For full common-mode range, see Figure 26 and Figure 27.
4
Sample tested during initial release to ensure compliance.
5
This device is operational with an external reference in the range of 0.1 V to VDD. See the Reference section for more details.
6
Measured with a midscale dc analog input.


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