AD7683 Analog Devices, AD7683 Datasheet - Page 5

• Manufacturer Part Number: AD7683
• Manufacturer: Analog Devices

Specifications of AD7683

• Resolution (bits): 16bit
• # Chan: 1
• Sample Rate: 100kSPS
• Interface: Ser,SPI
• Analog Input Type: Diff-Uni
• Ain Range: (Vref) p-p,Uni (Vref)
• Adc Architecture: SAR
• Pkg Type: CSP,SOP

TIMING SPECIFICATIONS
VDD = 2.7 V to 5.5 V; T
Table 5.
Parameter
Throughput Rate
CS Falling to DCLOCK Low
CS Falling to DCLOCK Rising
DCLOCK Falling to Data Remains Valid
CS Rising Edge to D
DCLOCK Falling to Data Valid
Acquisition Time
D
D
Timing and Circuit Diagrams
OUT
OUT
Fall Time
Rise Time
DCLOCK
D
OUT
OUT
CS
NOTES
1. A MINIMUM OF 22 CLOCK CYCLES ARE REQUIRED FOR 16-BIT CONVERSION. SHOWN ARE 24 CLOCK CYCLES.
High Impedance
D
A
OUT
= −40°C to +85°C, unless otherwise noted.
GOES LOW ON THE DCLOCK FALLING EDGE FOLLOWING THE LSB READING.
1
t
CSD
t
SUCS
HIGH-Z
4
D
5
OUT
0.8V
0
t
t
EN
(MSB)
Figure 3. Load Circuit for Digital Interface Timing
EN
D15 D14 D13 D12 D11 D10 D9
t
Figure 4. Voltage Reference Levels for Timing
CYC
t
R
TO D
Figure 5. D
Figure 2. Serial Interface Timing
OUT
2V
0.8V
100pF
Rev. A | Page 5 of 16
C
L
t
HDO
OUT
500µA
500µA
Rise and Fall Timing
COMPLETE CYCLE
Symbol
t
t
t
t
t
t
t
t
t
I
I
CYC
CSD
SUCS
HDO
DIS
EN
ACQ
F
R
OL
OH
2V
D8
t
F
D7
t
EN
2V
0.8V
1.4V
D6
D5
90%
10%
POWER DOWN
D4
Min
20
5
400
D3
D2
D1
Typ
16
14
16
11
11
(LSB)
D0
0
t
DIS
HIGH-Z
Max
100
0
100
50
25
25
t
ACQ
AD7683
Unit
kHz
μs
ns
ns
ns
ns
ns
ns
ns