HDMP-1636A Datasheet, PDF (11/18 Pages) Agilent(Hewlett-Packard) – Gigabit Ethernet and Fibre Channel SerDes ICs

11
HDMP-1636A/1646A/T1636A (Transmitter Section)
Output Jitter Characteristics
T_A = 0°C to +70°C, V_CC = 3.15 V to 3.45 V
Symbol
Parameter
RJ^[1]
Random Jitter at DOUT, the High Speed Electrical Data Port, specified as
one sigma deviation of the 50% crossing point (RMS)
DJ^[1] Deterministic Jitter at DOUT, the High Speed Electrical Data Port (pk-pk)
Units
ps
ps
Typ.
8
15
Note: 1. Defined by Fibre Channel Specification X3.230-1994 FC-PH Standard, Annex A, Section A.4 and tested using measurement
method shown in Figure 8.
70841B
PATTERN
GENERATOR*
0000011111
+ DATA
- DATA
1.25 GHz
125 MHz
83480A
OSCILLOSCOPE
TRIGGER
CH1 CH2
70311A
CLOCK SOURCE
* PATTERN
GENERATOR
PROVIDES A
DIVIDE BY
10 FUNCTION.
BIAS
TEE
+DOUT -DOUT
HDMP-1636A
REFCLK LOOPEN
Tx[0..9]
1.4 V
0011111000
(STATIC K28.7)
70311A
CLOCK SOURCE
DIVIDE
BY 10
CIRCUIT
(DUAL
OUTPUT)
1.25 GHz
DIVIDE
BY 2
CIRCUIT
70841B
PATTERN
GENERATOR
+K28.5, -K28.5
+ DATA
- DATA
83480A
OSCILLOSCOPE
TRIGGER
CH1 CH2
VARIABLE
DELAY
TTL
125 MHz
+DOUT -DOUT
-DIN
+DIN
HDMP-1636A
REFCLK
ENBYTSYNC
LOOPEN
Tx[0..9] Rx[0..9]
a. Block Diagram of RJ Measurement Method.
Figure 8. Transmitter Jitter Measurement Method.
b. Block Diagram of DJ Measurement Method.
HDMP-1636A/1646A/T1636A
Package Thermal Characteristics
T_A = 0°C to +70°C, V_CC = 3.15 V to 3.45 V
Symbol
Parameter
P_Dmax
θ_JA[1]
Power Dissipationa
Thermal Resistance: Junction to Ambient in still air
HDMP-1646A
HDMP-1636A
HDMP-T1636A
ψ_JT[2]
Thermal Characterization parameter: Junction to package top
HDMP-1646A
HDMP-1636A
HDMP-T1636A
Units
mW
°C/W
°C/W
Typ.
675
Max.
900
36.3
45.0
40.0
9.6
7.8
6.2
Notes:
Based on independent testing done by Agilent.
1. θ_JA is based on thermal measurement in a still air environment at 23°C on a standard 3 x 3” FR4 PCB as specified in EIA/JESD 51-7.
2. ψ_JT is used to determine the actual junction temperature in a given application, using the following equation:
T_J = ψ_JT x P_D + T_T where T_T is the measured temperature on top center of the package and P_D is the power being dissipated.