LMH6552_14 Datasheet, PDF (21/32 Pages) Texas Instruments – 1.5 GHz Fully Differential Amplifier

LMH6552
www.ti.com
Product Number
ADC11L066
ADC11C125
ADC11C170
ADC12010
ADC12020
ADC12040
ADC12D040
ADC12DL040
ADC12DL065
ADC12DL066
ADC12L063
ADC12C080
ADC12DS080
ADC12L080
ADC12C105
ADC12DS105
ADC12C170
ADC14L020
ADC14L040
ADC14C080
ADC14DS080
ADC14C105
ADC14DS105
ADC14155
Max Sampling Rate (MSPS)
66
125
170
10
20
40
40
40
65
66
63
80
80
80
105
105
170
20
40
80
80
105
105
155
SNOSAX9H – APRIL 2007 – REVISED MARCH 2013
Resolution
11
11
11
12
12
12
12
12
12
12
12
12
12
12
12
12
12
14
14
14
14
14
14
14
Channels
SINGLE
SINGLE
SINGLE
SINGLE
SINGLE
SINGLE
DUAL
DUAL
DUAL
DUAL
SINGLE
SINGLE
DUAL
SINGLE
SINGLE
DUAL
SINGLE
SINGLE
SINGLE
SINGLE
DUAL
SINGLE
DUAL
SINGLE
DRIVING CAPACITIVE LOADS
As noted previously, capacitive loads should be isolated from the amplifier output with small valued resistors.
This is particularly the case when the load has a resistive component that is 500Ω or higher. A typical ADC has
capacitive components of around 10 pF and the resistive component could be 1000Ω or higher. If driving a
transmission line, such as 50Ω coaxial or 100Ω twisted pair, using matching resistors will be sufficient to isolate
any subsequent capacitance.
BALANCED CABLE DRIVER
With up to 15 V_PP differential output voltage swing and 80 mA of linear drive current the LMH6552 makes an
excellent cable driver as shown in Figure 54. The LMH6552 is also suitable for driving differential cables from a
single ended source.
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