Analog Devices AD9776 Instruction Manual page 5

Parameter
8× Mode, f /4 Mod,
DAC
f = 1 GSPS, IF = 262.5 MHz
DAC
Power-Down Mode
Power Supply Rejection Ratio—
AVDD33
OPERATING RANGE
1 Based on a 10 kΩ external resistor.
T to T , AVDD33 = 3.3 V, DVDD33 = 3.3 V, DVDD18 = 1.8 V, CVDD18 = 1.8 V, I
MIN MAX
otherwise noted. LVDS driver and receiver are compliant to the IEEE-1596 reduced range link, unless otherwise noted.
Table 2. AD9776, AD9778, and AD9779 Digital Specifications
Parameter
LVDS RECEIVER INPUTS
(SYNC_I+, SYNC_I–), SYNC_I+ = V
Input Voltage Range, V or V
IA
Input Differential Threshold, V
Input Differential Hysteresis, V
Receiver Differential Input Impedance, R
LVDS Input Rate
Set-Up Time, Sync_I to DAC Clock
Hold Time, Sync_I to DAC Clock
LVDS DRIVER OUTPUTS
(SYNC_O+, SYNC_O–), SYNC_O+ = V
Output Voltage High, V or V
OA
Output Voltage Low, V or V
OA
Output Differential Voltage, |V
Output Offset Voltage, V
OS
Output Impedance, Single-Ended, R
Maximum Clock Rate
DAC CLOCK INPUT (CLK+, CLK–)
Peak-to-Peak Voltage at CLK+ and CLK–
Common-Mode Voltage
Maximum Clock Rate 3
SERIAL PERIPHERAL INTERFACE
Maximum Clock Rate (SCLK)
Minimum Pulse Width High
Minimum Pulse Width Low
INPUT DATA
Set-Up Time, Input Data To DATACLK (All Modes)
Hold Time, Input Data To DATACLK (All Modes)
1 Guaranteed at 25°C. Can drift above 120 Ω at temperatures above 25°C.
2 When using the PLL, a minimum 1 V swing is recommended.
3
Typical maximum clock rate when DVDD18 = CVDD18 = 1.9 V.
AD9776
Min Typ Max
980
2 3.7
–0.3 +0.3
–40 +25 +85
, SYNC_I– = V
IA IB
IB
IDTH
− V
IDTHH IDTHL
1
IN
, SYNC_O– = V , 100 Ω Termination
OA OB
OB
OB
|
OD
O
2
AD9778
Min Typ Max
980
2 3.7
–0.3 +0.3
–40 +25 +85
OUTFS
Min
825
–100
80
–0.2
1
825
1025
150
1150
80
1
400
300
3.0
–0.78
Rev. 0 | Page 5 of 56
AD9776/AD9778/AD9779
AD9779
Min Typ Max
980
2 3.7
–0.3 +0.3
–40 +25 +85
= 20 mA, maximum sample rate, unless
Typ Max
1575
+100
20
120
125
1575
200 250
1250
100 120
800 1600
400 500
1
40
12.5
12.5
Unit
mW
mW
% FSR/V
°C
Unit
mV
mV
mV
Ω
MSPS
ns
ns
mV
mV
mV
mV
Ω
GHz
mV
mV
GSPS
MHz
ns
ns
ns
ns