U2731B
| Model | U2731B |
| Description | DAB ONE- CHIP FRONT END |
| PDF file | Total 25 pages (File size: 654K) |
| Chip Manufacturer | ATMEL |
U2731B
Electrical Characteristics
Test conditions (unless otherwise specified): V
S
= 8.5 V, T
amb
= 25°C
No. Parameters
1
1.1
Overall Characteristics
Supply voltage
V(CPRF) = V(CPIF) < 0.8 V
M3 = M2 = HIGH
M1 = M0 = LOW
TAi = TCi = 0000; TBi = 1000
Minimum supply current
SWA = SWB = SWC = LOW
TRI = LOW; PLCK = LOW
I100 = I50 = LOW; V(ADR) = open
SLI = LOW; WAGC = HIGH
3.4 V < V(CPRF) = V(CPIF)
< 3.6 V; M3 = M2 = HIGH
M1 = M0 = LOW
TAi = TCi = 0000; TBi = 1000
SWA = LOW; SWB = LOW
SWC = LOW; TRI = LOW
PLCK = LOW; I100 = I50 = LOW
V(ADR) = open; SLI = LOW
WAGC = HIGH
RFA1, RFA2; RFB1, RFB2)
→
SAW1, SAW2
(see Figure 9 on page 21)
RFA1, (RFB1)
→
SAW1, SAW2;
RFA2, RFB2 blocked
Test Conditions
Pin
20, 25, 38
V
S
8.0
8.5
9.35
V
Symbol
Min.
Typ.
Max.
Unit
Type*
1.2
I
S,min
74
mA
B
1.3
Maximum supply
current
I
S,max
79
mA
B
2
2.1
2.2
2.3
RF Part
Voltage gain
AGC range RF
Noise figure
(double side band)
Maximum input power
level
12 (14)
→
19
NF
DSB,RF
12 (14)
→
18, 19
G
V,RF
20
23
24
27
12
26
29
dB
dB
dB
A
A
D
2.4
Differential, 3rd order
intermodulation distance
≥
40 dBc, 12, 13
Pout = -19 dBm, TAi = 0000,
(14, 15)
RL (SAW1, SAW2) = 200
Ω
12, 13
(14, 15)
Single ended
12 (14)
18, 19
P
in,max,MIX
-10
dBm
A
2.5
2.6
2.7
Input frequency range
Input impedance
Output frequency range
for AGC-voltage
generation
Output power, differential;
Maximum output power
RL (SAW1, SAW2) > 200
Ω,
level
TAi = 0000
AGC threshold (th1)
TAi = ‘1000’
TAi = ‘1111’
TAi = ‘0000’
Output power, differential
controlled by two-wire bus bits TAi;
RL (SAW1, SAW2) = 200
Ω
f
in,RF
Z
in,RF
f
out,SAW
70
1.3
38,912
±5
260
MHz
kΩ
MHz
B
D
D
2.8
18, 19
-7
dBm
D
2.9
18, 19
p
TH,RF
50
90
160
10
120
mV
rms
A
B
B
*) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter
Note:
1. The phase detector’s phase-noise contribution to the VCO’s frequency spectrum is determined by the operating frequency
of the phase detector divided by 4 according to the fractional-N technique (regularly: 16 kHz).
15
4671C–DAB–06/04
Related PDFs
| Model | Description | Manufacturer | Operation |
|---|---|---|---|
 U2731B-NFN
|
DAB ONE- CHIP FRONT END | ATMEL | Preview |
|
U2731B-NFNG1
|
DAB ONE- CHIP FRONT END | ATMEL | Preview |
