AD7985 Analog Devices, AD7985 Datasheet - Page 11

• 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

2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
2.375
95
94
93
92
91
90
89
88
87
86
85
0
–10
Figure 18. Operating Current vs. Supply Voltage
–9
2.425
–8
Figure 17. SNR vs. Input Level
AVDD AND DVDD VOLTAGE (V)
–7
INPUT LEVEL (dBFS)
2.475
–6
I
AVDD
–5
2.525
–4
I
DVDD
I
I
BVDD
I
VIO
REF
–3
2.575
–2
–1
2.625
0
Rev. A | Page 11 of 28
14
12
10
2.0
1.8
1.6
1.4
1.2
1.0
0.8
0.6
0.4
0.2
8
6
4
2
0
–55
0
–55
Figure 20. Power-Down Current vs. Temperature
–35
Figure 19. Operating Current vs. Temperature
–35
I
BVDD
I
REF
–15
–15
5
5
TEMPERATURE (°C)
TEMPERATURE (°C)
25
25
I
I
AVDD
AVDD
45
45
+ I
DVDD
65
65
+ I
VIO
85
85
105
105
AD7985
125
125