u3741bm ATMEL Corporation, u3741bm Datasheet - Page 29

• Manufacturer Part Number: u3741bm
• Description: Uhf Ask Receiver Ic
• Manufacturer: ATMEL Corporation

Electrical Characteristics (Continued)
All parameters refer to GND, T
(V
4662B–RKE–10/04
Parameters
Reduced sensitivity variation for
different values of R
Threshold voltage for reset
Digital Ports
Data output
- Saturation voltage LOW
- Internal pull-up resistor
- Maximum time constant
- Maximum capacitive load
POUT output
- Saturation voltage LOW
- Saturation voltage HIGH
FSK/ASK input
- Low-level input voltage
- High-level input voltage
ENABLE input
- Low-level input voltage
- High-level input voltage
MODE input
- Low-level input voltage
- High-level input voltage
TEST input
- Low-level input voltage
S
= 5 V, T
amb
= 25°C)
Sense
amb
= -40°C to +105°C, V
Test Conditions
Values relative to
R
R
R
R
R
R
R
P
I
t = C
without ext. pull-up resistor
R
I
I
FSK selected
ASK selected
Idle mode
Active mode
Division factor = 10
Division factor = 14
Test input must always be set to LOW
ol
POUT
POUT
Red
Sense
Sense
Sense
Sense
Sense
Sense
Sense
ext
= 1 mA
= 5 kΩ
L
= P
= 1 mA
= -1 mA
= 56 kΩ
= 56 kΩ
= 68 kΩ
= 82 kΩ
= 100 kΩ
= 120 kΩ
= 150 kΩ
(R
Ref_Red
pup
//R
S
Ext
+ ∆P
= 4.5 V to 5.5 V, f
)
Red
0
= 433.92 MHz and f
V
Symbol
∆P
ThRESET
R
V
V
V
V
V
V
C
C
V
V
V
V
Pup
τ
Oh
OI
Ol
Red
Ih
Ih
Ih
L
L
Il
Il
Il
Il
V
0.8 × V
0.8 × V
0.8 × V
0
S
= 315 MHz, unless otherwise specified.
Min.
1.95
- 0.3 V
39
S
S
S
V
S
-11.0
-13.5
Typ.
0.08
0.08
- 0.14V
-3.5
-6.0
-9.0
2.8
50
0
U3741BM
0.2 × V
0.2 × V
0.2 × V
0.2 × V
Max.
3.75
540
0.3
2.5
0.3
61
41
S
S
S
S
Unit
dB
dB
dB
dB
dB
dB
kΩ
pF
pF
µs
V
V
V
V
V
V
V
V
V
V
V
29