LMH0344 Datasheet, PDF (3/15 Pages) Texas Instruments – 3 Gbps HD/SD SDI Adaptive Cable Equalizer

LMH0344
www.ti.com
SNLS233L – APRIL 2007 – REVISED APRIL 2013
DC Electrical Characteristics
Over Supply Voltage and Operating Temperature ranges, unless otherwise specified ^{(1) (2)}.
Symbol Parameter
Conditions
Reference
Min
Typ
Max Units
V_CMIN
V_SDI
V_CMOUT
Input Common Mode Voltage
Input Voltage Swing
Output Common Mode Voltage
V_SDO
Output Voltage Swing
MUTE_REF DC Voltage (floating)
MUTE_REF Range
CD Output Voltage
At LMH0344 input^{(3) (4)}
100Ω load, differential
Carrier not present
SDI, SDI
SDO, SDO
MUTE_REF
CD
1.9
V
720
800
950 mV_P−P
V_CC –
V_SDO/2
V
750
mV_P-P
1.3
V
0.6
V
2.4
V
Carrier present
0.4
V
MUTE Input Voltage
Min to mute outputs
MUTE
2.0
V
Max to force outputs active
0.8
V
I_CC
Supply Current
85
100
mA
(1) Current flow into device pins is defined as positive. Current flow out of device pins is defined as negative. All voltages are stated
referenced to V_EE = 0 Volts.
(2) Typical values are stated for V_CC = +3.3V and T_A = +25°C.
(3) Specification is ensured by characterization.
(4) This specification is for 0m cable only.
AC Electrical Characteristics
Over Supply Voltage and Operating Temperature ranges, unless otherwise specified ⁽¹⁾.
Symbol Parameter
Conditions
Reference
Min
BR_MIN
BR_Max
Minimum Input Data Rate
Maximum Input Data Rate
Jitter for Various Cable Lengths 270 Mbps, Belden 1694A,
0-400 meters ⁽²⁾
SDI, SDI
270 Mbps, Belden 1694A,
0-400 meters ⁽³⁾
1.485 Gbps, Belden 1694A,
0-140 meters ⁽²⁾
1.485 Gbps, Belden 1694A,
0-140 meters ⁽³⁾
2.97 Gbps, Belden 1694A,
0-120 meters ⁽²⁾
2.97 Gbps, Belden 1694A,
0-120 meters ⁽³⁾
t_r,t_f
Output Rise Time, Fall Time
20% – 80%⁽⁴⁾
Mismatch in Rise/Fall Time
(4)
SDO, SDO
t_OS
Output Overshoot
(4)
R_OUT
RL_IN
Output Resistance
Input Return Loss
single-ended
5 MHz - 1.5 GHz⁽⁵⁾
SDI, SDI
15
1.5 GHz - 3.0 GHz⁽⁵⁾
10
R_IN
Input Resistance
C_IN
Input Capacitance
single-ended
single-ended
Typ
Max
Units
125
Mbps
2970
Mbps
0.2
UI
0.07
UI
0.25
UI
0.08
UI
0.3
UI
0.18
UI
60
130
ps
2
15
ps
1
5
%
50
Ω
dB
dB
1.3
kΩ
1
pF
(1) Typical values are stated for V_CC = +3.3V and T_A = +25°C.
(2) Based on characterization data over the full range of recommended operating conditions of the device. Jitter is measured in accordance
with SMPTE RP 184, SMPTE RP 192, and the applicable serial data transmission standard: SMPTE 424M, SMPTE 292M, or SMPTE
259M.
(3) Measured with Pseudo Matrix Pathological test signal.
(4) Specification is ensured by characterization.
(5) Input return loss is dependent on board design. The LMH0344 exceeds this specification on the SD344 evaluation board with a return
loss network consisting of an 8.2 nH inductor in parallel with a 0.5 pF capacitor in parallel with the 75Ω series resistor on the input.
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