AK8996 Datasheet, PDF (20/74 Pages) Asahi Kasei Microsystems – Pressure Sensor Interface IC

[AK8996/W]
11-2-6) Supply Voltage & Temperature Sensitivity Variation Adjustment Circuit (ST & SV)
Unless otherwise specified, VDD = 2.2 to 5.5V, Temperature = -40 to 105ºC, register default
Item
Symbol
Conditions
Min. Typ. Max. Units Comments
Measurement in test mode after offset voltage and span voltage adjustment
Sensitivity
variation
characteristics
to supply voltage
SV1
SV2
Unadjusted SV circuit
initial operation
SV circuit 2^nd
operation
5.0
±0.25
With respect
%
to target
value
%
With respect
to SV1
Sensitivity
Unadjusted ST initial
With respect
variation
ST1 operation
5.0 %
to target
characteristics
to operating
temperature
ST2 ^{ST circuit 2nd operation}
±0.25
value
%
With respect
to ST1
11-2-7) LPF, S/H1&2, & Buffer
Unless otherwise specified, VDD = 2.2 to 5.5V, Temperature = -40 to 105ºC, register default
Item
Symbol
Conditions
Min.
Typ.
Max. Units Comments
Measurement in test mode after offset voltage and span voltage adjustment
LPF freq.
response
Fc1
40
60
80 kHz
S/H1&2 gain
SHG
1.935
2
2.065 times
S/H1&2 out
pre-adj. error
SHerr
-20
0
20 mV
S/H2 output
resistance
post-adj. error
Rout
24.6
32
39.4 kΩ
BUF gain adj.
Bufg+ EOG[2:0]=4h
4
times
width
Bufg- EOG[2:0]=0h
2
times
Adj. step
Bufgstp
0.5
times 10kΩ
BUF output
(VOUT) drive
characteristics
Rbuf1+
Rbuf1-
Rbuf2+
Rbuf2-
Load resistance:
20 kΩ
Load resistance:
10 kΩ
0.9*VDD
0.9*VDD
V
0.1*VDD V
V
0.1*VDD V
VDD>2.7V
VDD>2.7V
MS1055-E-02
20
2011/12