AD7951 Analog Devices, AD7951 Datasheet - Page 4

• Manufacturer Part Number: AD7951
• Manufacturer: Analog Devices

Specifications of AD7951

• Resolution (bits): 14bit
• # Chan: 1
• Sample Rate: 1MSPS
• Interface: Byte,Par,Ser,SPI
• Analog Input Type: Diff-Bip,Diff-Uni
• Ain Range: Bip 10V,Bip 5.0V,Uni 10V,Uni 5.0V
• Adc Architecture: SAR
• Pkg Type: CSP,QFP

AD7951
Parameter
REFERENCE BUFFER
EXTERNAL REFERENCE
TEMPERATURE PIN
DIGITAL INPUTS
DIGITAL OUTPUTS
POWER SUPPLIES
TEMPERATURE RANGE
1
2
3
4
5
6
7
8
9
10
With V
Linearity is tested using endpoints, not best fit. All linearity is tested with an external 5 V reference.
LSB means least significant bit. All specifications in LSB do not include the error contributed by the reference.
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.
Conversion results are available immediately after completed conversion.
4.75 V or V
Tested in parallel reading mode.
With internal reference, PDREF = PDBUF = low; with internal reference disabled, PDREF = PDBUF = high. With internal reference buffer, PDBUF = low.
With all digital inputs forced to OVDD.
Consult sales for extended temperature range.
REFBUFIN Input Voltage Range
Voltage Range
Current Drain
Voltage Output
Temperature Sensitivity
Output Resistance
Logic Levels
Data Format
Pipeline Delay
Specified Performance
Operating Current
Power Dissipation
In Power-Down Mode
Specified Performance
V
V
I
I
V
V
AVDD
DVDD
OVDD
VCC
VEE
AVDD
DVDD
OVDD
VCC
VEE
With Internal Reference
With Internal Reference Disabled
IL
IH
IN
IL
IH
OL
OH
With Internal Reference
With Internal Reference Disabled
= 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.
REF
– 0.1 V, whichever is larger.
5
7, 8
10
9
Conditions/Comments
PDREF = high
PDREF = PDBUF = high
REF
1 MSPS throughput
@ 25°C
Parallel or serial 14-bit
I
I
@ 1 MSPS throughput
VCC = 15 V, with internal reference buffer
VCC = 15 V
VEE = −15 V
@ 1 MSPS throughput
PDREF = PDBUF = low
PDREF = PDBUF = high
PD = high
T
SINK
SOURCE
MIN
= 500 μA
to T
= –500 μA
MAX
Rev. 0 | Page 4 of 32
Min
2.4
4.75
−0.3
2.1
−1
−1
OVDD − 0.6
4.75
4.75
2.7
7
−15.75
−40
6
Typ
2.5
5
200
311
1
4.33
5
5
15
−15
20
18.5
7
0.5
4
3
2
235
215
10
Max
2.6
AVDD + 0.1
+0.6
OVDD + 0.3
+1
+1
0.4
5.25
5.25
5.25
15.75
0
260
240
+85
μA
V
V
mA
mA
mA
mW
mW
Unit
V
V
mV
mV/°C
kΩ
V
μA
μA
V
V
V
V
V
V
mA
mA
mA
mA
μW
°C