AD7992 Analog Devices, AD7992 Datasheet - Page 5

• Manufacturer Part Number: AD7992
• Description: 2-Channel, 12-Bit ADC with I2C Compatible Interface in 10-Lead MSOP
• Manufacturer: Analog Devices

Specifications of AD7992

• Resolution (bits): 12bit
• # Chan: 2
• Sample Rate: 79kSPS
• Interface: I²C/Ser 2-Wire,Ser
• Analog Input Type: SE-Uni
• Ain Range: Uni (Vref),Uni Vdd
• Adc Architecture: SAR
• Pkg Type: SOP

I
Guaranteed by initial characterization. All values measured with the input filtering enabled. C
line. t
High speed mode timing specifications apply to the AD7992-1 only. Standard and fast mode timing specifications apply to both the
AD7992-0 and the AD7992-1. See Figure 2. Unless otherwise noted, V
Table 3.
Parameter
f
t
t
t
t
t
t
t
t
t
SCL
1
2
3
4
5
6
7
8
9
2
1
C TIMING SPECIFICATIONS
r
and t
f
measured between 0.3 V
Conditions
Standard mode
Fast mode
High speed mode
Standard mode
Fast mode
High speed mode
Standard mode
Fast mode
High speed mode
Standard mode
Fast mode
High speed mode
Standard mode
Fast mode
High Speed mode
Standard mode
Fast mode
High Speed mode
Standard mode
Fast mode
High speed mode
Standard mode
Fast mode
Standard mode
Fast mode
High speed mode
Standard mode
Fast mode
High speed mode
C
C
C
C
C
C
C
C
C
C
B
B
B
B
B
B
B
B
B
B
= 100 pF max
= 400 pF max
= 100 pF max
= 400 pF max
= 100 pF max
= 400 pF max
= 100 pF max
= 400 pF max
= 100 pF max
= 400 pF max
DD
and 0.7 V
Min
4
0.6
60
120
4.7
1.3
160
320
250
100
10
0
0
0
0
4.7
0.6
160
4
0.6
160
4.7
1.3
4
0.6
160
20 + 0.1 C
10
20
DD
Limit at T
B
.
Max
100
400
3.4
1.7
3.45
0.9
70
150
1000
300
80
160
2
MIN
Rev. 0 | Page 5 of 28
, T
MAX
DD
Unit
kHz
kHz
MHz
MHz
µs
µs
ns
ns
µs
µs
ns
ns
ns
ns
ns
µs
µs
ns
ns
µs
µs
ns
µs
µs
ns
µs
µs
µs
µs
ns
ns
ns
ns
ns
= 2.7 V to 5.5 V; REF
Description
Serial clock frequency
t
t
t
t
t
t
t
t
t
HIGH
LOW
SU;DAT
HD;DAT
SU;STA
HD;STA
BUF
SU;STO
RDA
, bus free time between a STOP and a START condition
, rise time of SDA signal
, SCL low time
, SCL high time
, setup time for a repeated START condition
, setup time for STOP condition
, data setup time
, hold time for a repeated START condition
, data hold time
B
IN
refers to the capacitive load on the bus
= 2.5 V to V
DD
; T
A
=T
MIN
to T
MAX
AD7992
.