AD7787 Analog Devices, AD7787 Datasheet - Page 6

• Manufacturer Part Number: AD7787
• Description: Low Power, 2-Channel 24-Bit Sigma-Delta ADC
• Manufacturer: Analog Devices

Specifications of AD7787

• Resolution (bits): 24bit
• # Chan: 2
• Sample Rate: n/a
• Interface: Ser,SPI
• Analog Input Type: Diff-Uni,SE-Bip,SE-Uni
• Ain Range: (2Vref) p-p,(Vref) p-p,Uni (Vref)
• Adc Architecture: Sigma-Delta
• Pkg Type: SOP

AD7787
DOUT/RDY (O)
SCLK (I)
SCLK (I)
DIN (I)
CS (I)
CS (I)
TO OUTPUT
I = INPUT, O = OUTPUT
Figure 2. Load Circuit for Timing Characterization
PIN
I = INPUT, O = OUTPUT
t
1
Figure 3. Read Cycle Timing Diagram
Figure 4. Write Cycle Timing Diagram
50pF
t
t
8
2
t
Rev. 0 | Page 6 of 20
9
MSB
t
MSB
10
I
100µA WITH V
I
100µA WITH V
SINK
SOURCE
t
3
(1.6mA WITH V
t
(200µA WITH V
4
1.6V
DD
DD
LSB
= 3V)
= 3V)
DD
t
7
LSB
= 5V,
DD
t
11
= 5V,
t
6
t
5