LMH2832 Datasheet, PDF (16/46 Pages) Texas Instruments – LMH2832 Fully Differential, Dual, 1.1-GHz, Digital Variable-Gain Amplifier

LMH2832
SBOS709A – JULY 2016 – REVISED JULY 2016
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8 Parameter Measurement Information
8.1 Setup Diagrams
Figure 41 to Figure 44 illustrate various test setup diagrams using the LMH2832 evaluation module (EVM).
Vector Network
Analyzer
50
Port 1 SMA
50
Port 3 SMA
Test Equipment
with 50-Ÿ ,QSXWV/Outputs
LMH2832EVM-50
VS+ = 5 V
0.1 µF
INPx
0.1 µF ^INMx
½ LMH2832
10
+
- ^OUT_AMP
10
OUTPx ¹⁵
OUTMx ₁₅
SPI
GND
USB
0.1 µF
0.1 µF
Vector Network
Analyzer
SMA
Port 2 ⁵⁰
+
- ^OUT_LOAD
SMA
Port 4 ₅₀
Test Equipment
with 50-Ÿ ,QSXWV/Outputs
Copyright © 2016, Texas Instruments Incorporated
Figure 41. Frequency Response Differential Test Setup
50
Signal Generator
with 50-Ÿ 2XWSXWV
LMH2832EVM-75
VS+ = 5 V
Band-Pass
Filter
zo = 50 Ÿ, 1:2
0º
180º
ZFSCJ-2-1-S+
F-Connector
BMP5075
BMP5075
F-Connector
0.1 µF
INPx
0.1 µF ^INMx
½ LMH2832
10-
OUTPx ⁴⁰
+
-^OUT_AMP
10-
OUTMx ₄₀
0.1 µF
ETC1-1-13T
(1:1, zo = 50 Ÿ)
SMA
0.1 µF
50
Spectrum Analyzer
with 50-Ÿ ,QSXWV
50-Ÿ 5HIHUHQFH 75-Ÿ 5HIHUHQFH
SPI
GND
USB
Copyright © 2016, Texas Instruments Incorporated
Figure 42. Single-Tone Harmonic Distortion Test Setup
LMH2832EVM-75
50
VS+ = 5 V
Signal Generator
with 50-Ÿ 2XWSXWV
6-dB _Band-Pass
Attenuation
Pads
Filter
50
Signal Generator
with 50-Ÿ 2XWSXWV
ZFSCJ-2-1
or
ZFSCJ-2-4
F-Connector
BMP5075
50-Ÿ 5HIHUHQFH
75-Ÿ 5HIHUHQFH
MABA011033
(1:2, zo = 75 Ÿ) ^{0.1 µF} _INPx
0.1 µF ^INMx
10
OUTPx ⁴⁰
½ LMH2832
+
- ^OUT_AMP
10
OUTMx ₄₀
0.1 µF
ETC1-1-13T
(1:1, zo = 50 Ÿ)
SMA
0.1 µF
SPI
GND
USB
50
Spectrum Analyzer
with 50-Ÿ ,QSXWV
Copyright © 2016, Texas Instruments Incorporated
Figure 43. Two-Tone Linearity Test Setup (OIP3, OIP2)
16
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