AD9508/PCBZ Analog Devices, AD9508/PCBZ Datasheet - Page 12

• Manufacturer Part Number: AD9508/PCBZ
• Description: Clock & Timer Development Tools 1
• Manufacturer: Analog Devices
• Type: Clock Buffersr

Specifications of AD9508/PCBZ

• Rohs: yes
• Product: Evaluation Boards
• Tool Is For Evaluation Of: AD9508
• Frequency: 250 MHz, 1.65 GHz
• Operating Supply Voltage: 6 V
• Description/function: High performance 1
• Interface Type: I2C, SPI, USB
• Factory Pack Quantity: 1

Pin No.
18
19
20
21
22
23
24
AD9508
Mnemonic
R ESET
A
SCLK/SCL/S0
S YNC
A
CLK
C LK
A
IN_SEL
SDIO/SDA/S1
EP
E
E
E
Description
CMOS Input. Device Reset. When this active low pin is asserted, the internal register settings enter their
default state after the
while an active low signal is applied to the pin. The
Serial Programming Clock/Data Clock/Programming Pin. Multipurpose pin controlled by the PROG_SEL
pin used for serial programming clock (SCLK) in SPI mode or data clock (SCL) for serial programming in
I
mode, this pin becomes S0. In this mode, S0 is hardwired with a resistor to either VDD or ground. The
resistor value and resistor biasing determine the channel divider values for the outputs on Pin 2 and
Pin 3. See the Pin Strapping to Program on Power-Up section for more details.
Clock Synchronization. When this pin is active low, the output drivers are held static and then
synchronized on a low-to-high transition of this pin. The
resistor.
Differential Clock Input or Single-Ended CMOS Input. Whether this pin serves as the differential clock
input or the single-ended CMOS input depends on the logic state of the IN_SEL pin.
Complementary Differential Clock Input.
CMOS Input. A logic high configures the CLK and
configures the input for single-ended CMOS applied to the CLK pin. AC-couple the unused
ground with a 0.1 μF capacitor.
Serial Data Input and Output (SPI)/Serial Data (I
controlled by the PROG_SEL pin used for SPI (SDIO), I
device is in 4-wire SPI mode, data is written via SDIO. In 3-wire mode, both data reads and writes occur
on this pin. There is no internal pull-up/pull-down resistor on this pin. In I
serial data pin. The PROG_SEL pin determines which programming mode is used. In pin programming
mode, this pin becomes S1. In this mode, S1 is hardwired with a resistor to either VDD or ground. The
resistor value and resistor biasing determine the channel divider values for the outputs on Pin 7 and
Pin 8. See the Pin Strapping to Program on Power-Up section for more details.
Exposed Pad. The exposed die pad must be connected to ground (VSS).
2
C Mode. The PROG_SEL pin determines which programming mode is used. In pin programming
R ESET
A
Rev. A | Page 12 of 40
E
A
is released. Note that
2
C)/Pin Programming. Pin 24 is a multipurpose input
C LK
A
R ESET
A
R ESET
A
2
E
A
C (SDA), and pin strapping modes (S1). When the
inputs for a differential input signal. A logic low
E
A
S YNC
A
also serves as a power-down of the device
E
A
pin has an internal 24 kΩ pull-up resistor.
E
A
pin has an internal 24 kΩ pull-up
2
C mode, SDA serves as the
Data Sheet
C LK
A
E
A
to