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U3741BM Datasheet, PDF (23/25 Pages) ATMEL Corporation – UHF ASK RECEIVER IC | |||
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U3741BM
Electrical Characteristics (continued)
All parameters refer to GND, Tamb = â40°C to +105°C, VS = 4.5 V to 5.5 V, f0 = 433.92 MHz and f0 = 315 MHz,
unless otherwise specified. (VS = 5 V, Tamb = 25°C)
Parameters
Test Conditions / Pins
ÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃ Reduced sensitivity
ÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃ Reduced sensitivity variation
over full operating range
ÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃ Reduced sensitivity variation
ÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃ for different values of RSense
RSense connected from Pin Sens to
VS, input matched according to
figure 6
W RSense = 56 k , fin = 433.92 MHz,
(VS = 5 V, Tamb = 25°C)
@ B = 300 kHz
@ B = 600 kHz
W RSense = 100 k , fin = 433.92 MHz
@ B = 300 kHz
@ B = 600 kHz
W RSense = 56 k , fin = 315 MHz
@ B = 300 kHz
@ B = 600 kHz
W RSense = 100 k , fin = 315 MHz
@ B = 300 kHz
@ B = 600 kHz
W RSense = 56 k
W RSense = 100 k
D PRed = PRef_Red + PRed
Values relative to
RSense = 56 kW
ÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃ Threshold voltage for reset
ÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃ Digital ports
ÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃ Data output
â Saturation voltage LOW
ÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃ â Internal pull-up resistor
ÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃ â Maximum time constant
â Maximum caoacitive load
ÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃ POUT output
â Saturation voltage LOW
ÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃ â Saturation voltage HIGH
ÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃ FSK/ASK input
ÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃ â Low level input voltage
â High level input voltage
ÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃ ENABLE input
ÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃ â Low level input voltage
ÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃ â High level input voltage
MODE input
ÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃ â Low level input voltage
ÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃ â High level input voltage
ÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃ TEST input
ÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃ â Low level input voltage
RSense
RSense
RSense
RSense
RSense
RSense
PRed =
= 56 kW
= 68 kW
= 82 kW
= 100 kW
= 120 kW
= 150 kW
PRef_Red +
DPRed
Iol = 1 mA
t = CL (Rpup//RExt)
without ext. pull-up resistor
Rext = 5 kW
IPOUT = 1 mA
IPOUT = â1 mA
FSK selected
ASK selected
Idle mode
Active mode
Division factor = 10
Division factor = 14
Test input must always be set to
LOW
Symbol Min.
Typ.
PRef_Red
â71
â76
â67
â72
â80
â85
â76
â81
â72
â77
â68
â73
â81
â86
â77
â82
DPRed
5
0
6
0
DPRed
0
â3.5
â6.0
â9.0
â11.0
â13.5
VThRESET 1.95
2.8
VOI
RPtup
CL
CL
VOl
VOh
VIl
VIh
VIl
VIh
VIl
VIh
VIl
0.08
39
50
0.08
VSâ0.3V VSâ0.14V
0.8 Ã VS
0.8 Ã VS
0.8 Ã VS
Max.
â81
â77
â90
â86
â82
â78
â91
â87
0
0
3.75
0.3
61
2.5
41
540
0.3
0.2 Ã VS
0.2 Ã VS
0.2 Ã VS
0.2 Ã VS
Unit
dBm
(peak
level)
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dBm
dB
dB
dB
dB
dB
dB
dB
dB
V
V
kW
ms
pF
pF
V
V
V
V
V
V
V
V
V
Rev. A1, 15-Oct-98
Preliminary Information
23 (25)
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