AD7986BCPZ Analog Devices Inc, AD7986BCPZ Datasheet - Page 5

• Manufacturer Part Number: AD7986BCPZ
• Description: IC ADC 18BIT 2MSPS SAR 20LFCSP
• Manufacturer: Analog Devices Inc

Specifications of AD7986BCPZ

• Data Interface: MICROWIRE™, QSPI™, Serial, SPI™
• Number Of Bits: 18
• Sampling Rate (per Second): 2M
• Number Of Converters: 1
• Power Dissipation (max): 34mW
• Voltage Supply Source: Analog and Digital
• Operating Temperature: -40°C ~ 85°C
• Mounting Type: Surface Mount
• Package / Case: 20-VFQFN, CSP Exposed Pad
• Resolution (bits): 18bit
• Sampling Rate: 2MSPS
• Input Channel Type: Differential
• Supply Voltage Range - Analog: 2.375V To 2.625V
• Digital Ic Case Style: CSP
• No. Of Pins: 20
• Lead Free Status / RoHS Status: Lead free / RoHS Compliant

TIMING SPECIFICATIONS
AVDD = DVDD = 2.5 V, BVDD = 5 V, VIO = 1.8 V to 2.7 V, V
Table 4.
Parameter
Conversion Time: CNV Rising Edge to Data Available (Turbo Mode/Normal Mode)
Acquisition Time
Time Between Conversions (Turbo Mode/Normal Mode)
CNV Pulse Width (CS Mode)
Data Read During Conversion (Turbo Mode/Normal Mode)
Quiet Time During Acquisition from Last SCK Falling Edge to CNV Rising Edge
SCK Period (CS Mode)
SCK Period (Chain Mode)
SCK Low Time
SCK High Time
SCK Falling Edge to Data Remains Valid
SCK Falling Edge to Data Valid Delay
CNV or SDI Low to SDO D17 MSB Valid (CS Mode)
CNV or SDI High or Last SCK Falling Edge to SDO High Impedance (CS Mode)
SDI Valid Setup Time from CNV Rising Edge
SDI Valid Hold Time from CNV Rising Edge (CS Mode)
SDI Valid Hold Time from CNV Rising Edge (Chain Mode)
SCK Valid Setup Time from CNV Rising Edge (Chain Mode)
SCK Valid Hold Time from CNV Rising Edge (Chain Mode)
SDI Valid Setup Time from SCK Falling Edge (Chain Mode)
SDI Valid Hold Time from SCK Falling Edge (Chain Mode)
SDI High to SDO High (Chain Mode with Busy Indicator)
1
See Figure 2 and Figure 3 for load conditions.
Figure 2. Load Circuit for Digital Interface Timing
TO SDO
20pF
C
L
500µA
500µA
I
I
OL
OH
1.4V
Rev. B | Page 5 of 28
REF
= 4.096 V, T
A
1
= −40°C to +85°C, unless otherwise noted.
MINIMUM V
SPECIFICATIONS IN TABLE 3.
90% VIO
t
DELAY
Symbol
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
t
CONV
ACQ
CYC
CNVH
DATA
QUIET
SCK
SCK
SCKL
SCKH
HSDO
DSDO
EN
DIS
SSDICNV
HSDICNV
HSDICNV
SSCKCNV
HSCKCNV
SSDISCK
HSDISCK
DSDOSDI
IH
AND MAXIMUM V
Figure 3. Voltage Levels for Timing
V
V
IH
IL
1
1
Min
100
500/660
10
20
9
11
3.5
3.5
2
4
0
0
5
5
2
3
IL
USED. SEE DIGITAL INPUTS
Typ
10% VIO
t
DELAY
V
V
Max
400/500
200/300
6
10
8
5
IH
IL
1
1
1
AD7986
Unit
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns
ns