LMH6521_16 Datasheet, PDF (22/29 Pages) Texas Instruments – High Performance Dual DVGA

LMH6521
SNOSB47D – MAY 2011 – REVISED MARCH 2013
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Table 6. LMH6521+BPF+ADC16DV160 vs Typical ADC16DV160 Specifications
Configuraton
LMH6521+BPF+ADC16DV160
ADC16DV160 only
ADC
Input
–1dBFS
–1dBFS
SNR
(dBFS)
75.5
76
SFDR
(dBFS)
82
89
POWER SUPPLIES
The LMH6521 was designed primarily to be operated on 5V power supplies. The voltage range for V_CC is 4.75V
to 5.25V. When operated on a board with high speed digital signals it is important to provide isolation between
digital signal noise and the LMH6521 inputs. The SP16160CH1RB reference board provides an example of good
board layout.
0.01 PF
TC4-1W
1:4
0.01 PF
1 PH
L3
40.2: 0.01 PF ^{160 nH}
L4
180 nH
4 pF
50:
½
50:
C4
L5
C5
LMH6521
4 pF
15 nH 41 pF
50:
0.01 PF
1 PH
40.2:
0.01 PF
L3
160 nH
L4
180 nH
4 pF
Center Frequency is 192MHz with a 20MHz Bandwidth. Designed for 200Ω Impedance.
Figure 42. Narrowband Tapped-L Bandpass Filter
ADC16DV160
V_RM
22
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