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TPS8804 Datasheet(PDF) 7 Page - Texas Instruments

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Part # TPS8804
Description  TPS8804 Smoke Alarm AFE
PDF  48 Pages
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Manufacturer  TI1 [Texas Instruments]
Direct Link  http://www.ti.com
Logo TI1 - Texas Instruments

TPS8804 Datasheet(HTML) 7 Page - Texas Instruments

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TPS8804
www.ti.com
SLVSF29 – OCTOBER 2019
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Copyright © 2019, Texas Instruments Incorporated
Electrical Characteristics (continued)
over operating free-air temperature range (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
VMCULDO, TR
MCULDO load transient
regulation
IMCULDO stepped from 0 mA
to 10 mA in 1us, T < 80°C
–5
5
%
IMCULDO stepped from 0 mA
to 10 mA in 1us, T > 80°C
–8
8
%
IMCULDO stepped from 10 mA
to 0 mA in 1us, T < 80°C
–5
5
%
IMCULDO stepped from 10 mA
to 0 mA in 1us, T > 80°C
–8
8
%
IMCULDO, SC
Short Circuit current limit
100
160
270
mA
tMCULDO, PWR
Power Up Time
CMCULDO = 1µF, time from
VMCU=0V to 90% of target
voltage
600
1100
µs
TMCULDO, PG
MCULDO power good
deglitch time
92
125
158
µs
TMCULDO,
MASK
MCULDO low voltage error
mask time. MCULDO_ERR is
masked for
T_MCULDO,MASK after
VMCUSET or MCU_DIS is
changed.
10
ms
IMCULDO, Q
Quiescent Current
IMCULDO = 0µA
1.5
3
µA
CMCULDO
Output Capacitor
Ceramic
0.7
1
1.3
µF
ESR of Output Capacitor
100
mΩ
RMCUSEL
MCUSEL component
requirements. Not tested in
production
Pull-down resistance to set
VMCUSET[1:0]=00 on
powerup
558
620
682
Ω
Pull-down resistance to set
VMCUSET[1:0]=01 on
powerup
0
10
Ω
Pull-up resistance to VINT to
set VMCUSET[1:0]=10 on
powerup
0
10
Ω
Capacitance to set
VMCUSET[1:0]=11 on
powerup
300
1000
pF
PHOTO CHAMBER INPUT STAGE AMPLIFIER
VPDO
Output voltage range
PAMP_EN=1, Feedback
network: 1.5M
Ω, 10pF
0
0.5
V
fPDIN, BW
Unity Gain Bandwidth
1
5
MHz
VPDIN, OFS
Input Offset Voltage
-200
200
µV
VPDO, OFS
Output Offset Voltage
50mV applied to PDP with
1.5M
Ω series resistor. 1.5MΩ
resistor connects PDN to
PDO. Voltage measured
between 50mV and PDO.
-10
10
mV
fPDIN, CHOP
Chop Frequency
2
MHz
TPDIN, SET
Input amplifier settling time.
Time between stepping the
current and measuring 90%
of the final value + 10% of
the initial value at PDO
Feedback network: 1.5M
Ω,
10pF. 1 nA to 10 nA applied
from PDN to PDP. 0V
reference
0
30
40
µs
Feedback network: 1.5M
Ω,
5pF. 1.5M
Ω connected from
PDP to PREF. 1 nA to 10 nA
applied from PDN to PDP.
PREF_SEL=1
0
20
40
µs



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