AD7951BCPZ 查看數據表（PDF） - Analog Devices
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AD7951BCPZ Datasheet PDF : 32 Pages
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AD7951
Data Sheet
Parameter
REFERENCE BUFFER
REFBUFIN Input Voltage Range
EXTERNAL REFERENCE
Voltage Range
Current Drain
TEMPERATURE PIN
Voltage Output
Temperature Sensitivity
Output Resistance
DIGITAL INPUTS
Logic Levels
VIL
VIH
IIL
IIH
DIGITAL OUTPUTS
Data Format
Pipeline Delay5
VOL
VOH
POWER SUPPLIES
Specified Performance
AVDD
DVDD
OVDD
VCC
VEE
Operating Current7, 8
AVDD
With Internal Reference
With Internal Reference Disabled
DVDD
OVDD
VCC
VEE
Power Dissipation
With Internal Reference
With Internal Reference Disabled
In Power-Down Mode9
TEMPERATURE RANGE10
Specified Performance
Conditions/Comments
PDREF = high
PDREF = PDBUF = high
REF
1 MSPS throughput
@ 25°C
Min
Typ
2.4
2.5
4.75
5
200
311
1
4.33
Parallel or serial 14-bit
ISINK = 500 μA
ISOURCE = –500 μA
−0.3
2.1
−1
−1
OVDD − 0.6
@ 1 MSPS throughput
4.756
5
4.75
5
2.7
7
15
−15.75
−15
20
18.5
7
0.5
VCC = 15 V, with internal reference buffer
4
VCC = 15 V
3
VEE = −15 V
2
@ 1 MSPS throughput
PDREF = PDBUF = low
235
PDREF = PDBUF = high
215
PD = high
10
TMIN to TMAX
−40
Max
Unit
2.6
V
AVDD + 0.1 V
μA
mV
mV/°C
kΩ
+0.6
V
OVDD + 0.3 V
+1
μA
+1
μA
0.4
V
V
5.25
V
5.25
V
5.25
V
15.75
V
0
V
mA
mA
mA
mA
mA
mA
mA
260
mW
240
mW
μW
+85
°C
1 With VIN = 0 V to 5 V or 0 V to 10 V ranges, the input current is typically 100 μA. In all input ranges, the input current scales with throughput. See the Analog Inputs section.
2 Linearity is tested using endpoints, not best fit. All linearity is tested with an external 5 V reference.
3 LSB means least significant bit. All specifications in LSB do not include the error contributed by the reference.
4 All specifications in dB are referred to a full-scale range input, FSR. Tested with an input signal at 0.5 dB below full-scale, unless otherwise specified.
5 Conversion results are available immediately after completed conversion.
6 4.75 V or VREF – 0.1 V, whichever is larger.
7 Tested in parallel reading mode.
8 With internal reference, PDREF = PDBUF = low; with internal reference disabled, PDREF = PDBUF = high. With internal reference buffer, PDBUF = low.
9 With all digital inputs forced to OVDD.
10 Consult sales for extended temperature range.
Rev. A | Page 4 of 32
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