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U4256BM Datasheet, PDF (4/14 Pages) TEMIC Semiconductors – Frequency Synthesizer for Radio Tuning | |||
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U4256BM
Electrical Characteristics (continued)
Test conditions (unless otherwise specified): VS = +8.5 V, Tamb = +25°C
Parameters
Test Conditions / Pins Symbol Min.
PDO
Pin 1
ÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃ Saturation voltage HIGH
VSATH â (VA â VPDOFM), VSATH
ÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃ LOW
I = 15 mA
VSATL 100
ÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃ SWO1, SWO2, SWO3, SWO4 (open drain) Pins 7, 8, 9 and 10
ÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃ Output leakage current
ÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃ HIGH
I = 1 mA,
V7,8,9,10 = 8.5 V
IOHL
Output voltage
ÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃ DAC1, DAC2
LOW
Pins 3 and 4
VSWOL
ÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃ Output current
ÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃ Output voltage
ÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃ Gain range (resolution 256 steps)
IDAC1, 2
VDAC1, 2 0.3
0.6
ÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃ Offset range (resolution 24 steps)
â0.6
ÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃ DAC 3
Pin 5
ÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃ Output current
IDAC3
ÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃ Output voltage (resolution 16 steps)
VDAC3 0.25
MX2LO
ÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃ Output AC voltage
W At Pin15: 47 pF and 1 k VMX2LO 80
ÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃÃ Output DC voltage
VDC
1.6
Typ. Max. Unit
500 mV
200
400
mV
100
nA
100 400 mV
1
mA
VS â 0.5 V
2.3
0.7
V
1
mA
6
V
120
200 mVpp
1.9
2.1
V
3-Wire Bus Description
16-bit command
EN
DATA LSB
CLK
BYTE 1
MSB LSB
24-bit command
EN
DATA LSB
CLK
BYTE 1
MSB LSB
BYTE 2
MSB
BYTE 2
MSB LSB
14858
BYTE 3
MSB
e.g., Divider
IPD3 IPD1
20 21 22 23 24 25 26 27 28 29 210 211 212 213 214 215 Pâ20 Pâ21 Pâ22 OSCB IPD4 IPD2 0 0
RâDivider
Status 0
Addr.
Figure 3. Pulse diagram
4 (14)
Rev. A2, 03-Nov-98
Preliminary Information
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