ATA5749 ATMEL Corporation, ATA5749 Datasheet - Page 22

• Manufacturer Part Number: ATA5749
• Description: Fractional-n PLL Transmitter IC
• Manufacturer: ATMEL Corporation

11. Timing Characteristics (ATA5749)
V
(pin 9). Parameters where crystal relevant parameters are important correspond to a crystal with C
and R
22
*) Type means: A = 100% tested, B = 100% correlation tested, C = Characterized on samples, D = Design parameter
1.10
1.11
1.12
1.13
S
No. Parameters
1.1
1.2
1.3
1.4
1.5
1.6
1.7
1.8
1.9
= 1.9V to 3.6V, T
M
EN set-up time to rising
edge of SCK
SDIN_TXDIN set-up time
to falling edge of EN
SDIN_TXDIN set-up time
to rising edge of SCK
SDIN_TXDIN hold time
from rising edge of SCK
SCK Cycle time
SCK high time period
SCK low time period
EN low time period with
SDIN_TXDIN = “High” for
register reset
Clock output frequency
(CMOS microcontroller
compatible)
Clock output minimum
“High” and “Low” time
Clock output minimum
“High” and “Low” time
Clock output minimum
“High” and “Low” time
Clock output minimum
“High” and “Low” time
170 unless otherwise specified.
ATA5749 [Preliminary]
amb
= –40°C to +125°C. Typical values are given at V
Test Conditions
f
DIV_CNTRL = “High”
(f
DIV_CNTRL = “Low”
(f
Cload
DIV_CNTRL = “Low”
(f
“High” = 0.8
“Low” = 0.2
f
Cload 10 pF,
DIV_CNTRL = “High”
(f
“High” = 0.8
“Low” = 0.2
f
Cload
DIV_CNTRL = “Low”
(f
“High” = 0.8
“Low” = 0.2
f
Cload 10 pF,
DIV_CNTRL = “High”
(f
“High” = 0.8
“Low” = 0.2
f
XTO
CLK
CLK
CLK
CLK
CLK
CLK
clk
clk
clk
clk
= f
= f
= f
= f
= 13.000 MHz
< 1.625 MHz
< 3.25 MHz
< 1.85 MHz
< 3.7 MHz
= f
= f
XTO
XTO
XTO
XTO
XTO
XTO
20 pF,
20 pF,
/ 8)
/ 4)
/ 4)
/ 8)
/ 4)
/ 8)
V
V
V
V
V
V
V
V
S
S
S
S
S
S
S
S
,
,
,
,
,
,
,
,
1, 10
2, 10
2, 10
Pin
2, 3
2, 3
3
3
3
1
1
1
1
1
S
= 3.0V and T
T
T
T
T
T
T
Symbol
SDIN_TXDIN
SCK_Cycle
T
T
T
T
SCK_High
EN_Reset
EN_setup
T
SCK_Low
_setup
T
f
CLKLH
CLKLH
CLKLH
CLKLH
Setup
CLK
Hold
amb
Min.
62.5
62.6
125
500
200
200
125
125
= 25°C. All parameters are referred to GND
10
10
10
10
M
1.625
Typ.
3.25
220
110
180
= 4.0 fF, C
90
Max.
0
= 1.5 pF, C
MHz
Unit
µs
ns
ns
ns
ns
ns
ns
us
ns
ns
ns
ns
9128C–RKE–10/08
LOAD
= 9 pF
Type*
C
C
C
C
C
C
C
C
A
A
A
C
C