AD7985 Analog Devices, AD7985 Datasheet - Page 4

• Manufacturer Part Number: AD7985
• Description: 16-Bit, 2.5 MSPS PulSAR 11 mW ADC in QFN
• Manufacturer: Analog Devices

Specifications of AD7985

• Resolution (bits): 16bit
• # Chan: 1
• Sample Rate: 2.5MSPS
• Interface: Ser,SPI
• Analog Input Type: SE-Uni
• Ain Range: (Vref) p-p,Uni (Vref)
• Adc Architecture: SAR
• Pkg Type: CSP

AD7985
Table 3.
Parameter
INTERNAL REFERENCE
EXTERNAL REFERENCE
REFERENCE BUFFER
DIGITAL INPUTS
DIGITAL OUTPUTS
POWER SUPPLIES
TEMPERATURE RANGE
1
2
3
With all digital inputs forced to VIO or GND as required.
During acquisition phase.
Contact an Analog Devices, Inc., sales representative for the extended temperature range.
Output Voltage
Temperature Drift
Line Regulation
Turn-On Settling Time
REFIN Output Voltage
REFIN Output Resistance
Voltage Range
Current Drain
REFIN Input Voltage Range
REFIN Input Current
Logic Levels
Data Format
Pipeline Delay
V
V
AVDD, DVDD
BVDD
VIO
Standby Current
Power Dissipation
Specified Performance
OL
OH
V
V
I
I
With Internal Reference
With External Reference
IL
IH
IL
IH
1, 2
3
Test Conditions/Comments
PDREF is low
T
−40°C to +85°C
AVDD = 2.5 V ± 5%
C
REFIN at 25°C
PDREF is high, REFIN is low
I
I
Specified performance
AVDD = DVDD = VIO = 2.5 V
2.5 MSPS throughput
2.0 MSPS throughput
2.5 MSPS throughput
2.0 MSPS throughput
T
SINK
SOURCE
A
MIN
REF
= 25°C
= +500 µA
= 10 μF, C
to T
= −500 µA
MAX
REFIN
Rev. A | Page 4 of 28
= 0.1 μF
Min
4.081
2.4
−0.3
0.9 × VIO
−1
−1
VIO − 0.3
2.375
4.75
1.8
−40
Conversion results available immediately
Serial 16 bits, straight binary
after completed conversion
Typ
4.096
±10
±50
40
1.2
6
500
1.2
160
2.5
5.0
2.5
1.0
28
25
15.5
12
Max
4.111
5.1
0.1 × VIO
VIO + 0.3
+1
+1
0.4
2.625
5.25
2.7
33
30
17
13
+85
Unit
V
ppm/°C
ppm/V
ms
V
kΩ
V
µA
V
µA
V
V
µA
µA
V
V
V
V
V
µA
mW
mW
mW
mW
°C