參數(shù)資料
型號(hào)： AD7934
廠商： ANALOG DEVICES INC
元件分類(lèi)： ADC
英文描述： 4-Channel, 1.5 MSPS, 12-Bit and 10-Bit Parallel ADCs with a Sequencer
中文描述： 4-CH 12-BIT SUCCESSIVE APPROXIMATION ADC, PARALLEL ACCESS, PDSO28
封裝： TSSOP-28
文件頁(yè)數(shù)： 4/32頁(yè)
文件大?。?/td> 1253K
代理商： AD7934
AD7933/AD7934
Preliminary Technical Data
Parameter
V
REF
Output Impedance
V
REF
Input Capacitance
LOGIC INPUTS
Input High Voltage, V
INH
Input Low Voltage, V
INL
Input Current, I
IN
Input Capacitance, C
IN5
LOGIC OUTPUTS
Output High Voltage, V
OH
Output Low Voltage, V
OL
Floating-State Leakage Current
Floating-State Output Capacitance
5
Output Coding
CONVERSION RATE
Conversion Time
Track-and-Hold Acquisition Time
Throughput Rate
POWER REQUIREMENTS
V
DD
V
DRIVE
I
DD7
Normal Mode(Static)
Normal Mode (Operational)
Auto StandBy Mode
Auto Shutdown Mode
Full Shutdown Mode
Power Dissipation
Normal Mode (Operational)
Auto Standby Mode (Static)
Auto Shutdown Mode (Static)
Full Shutdown Mode
B Version
1
10
15
25
2.4
0.8
±1
10
2.4
0.4
±10
10
Unit
typ
pF typ
pF typ
V min
V max
μA max
pF max
V min
V max
μA max
pF max
Test Conditions/Comments
When in track
When in hold
Typically 10 nA, V
IN
= 0 V or V
DRIVE
I
SOURCE
= 200 μA;
I
SINK
= 200 μA
CODING bit = 0
CODING bit = 1
Full scale step input
Digital I/Ps = 0 V or V
DRIVE
V
DD
= 2.7 V to 5.25 V, SCLK on or off
V
DD
= 4.75 V to 5.25 V
V
DD
= 2.7 V to 3.6 V
F
SAMPLE
= 250 kSPS
(Static)
F
SAMPLE
= 250 kSPS
(Static)
SCLK on or off
V
DD
= 5 V
V
DD
= 3 V
V
DD
= 5 V
V
DD
= 3 V
V
DD
= 5 V
V
DD
= 3 V
V
DD
= 5 V
V
DD
= 3 V
Straight (Natural) Binary
Twos Complement
t
2
+ 13
tclk
+ t
20
135
1.5
2.7/5.25
2.7 /5.25
0.5
3.2
2.6
1.55
90
1
1
1
16
8
450
270
5
3
5
3
ns
ns max
MSPS max
V min/max
V min/max
mA typ
mA max
mA max
mA typ
μA max
mA typ
μA max
μA max
mW max
mW max
μW max
μW max
μW max
μW max
μW max
μW max
1
Temperature range is as follows: B Versions: 40°C to +85°C.
2
See Terminology section.
3
Analog inputs with slew rates exceeding 27 V/μs (full-scale input sine wave >3.5 MHz) within the acquisition time may cause an incorrect conversion result to be
returned by the converter.
4
For full common-mode range see
5
Sample tested during initial release to ensure compliance.
6
This device is operational with an external reference in the range 0.1 V to 3.5 V differential mode and 0.1 V to V
DD
in pseudo-differential and single-ended modes.
7
Measured with a midscale dc input.
Rev. PrG | Page 4 of 32
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