LMH2832 Datasheet, PDF (6/46 Pages) Texas Instruments – LMH2832 Fully Differential, Dual, 1.1-GHz, Digital Variable-Gain Amplifier

LMH2832
SBOS709A – JULY 2016 – REVISED JULY 2016
www.ti.com
7.5 Electrical Characteristics
at T_A = 25°C, V_S+ = 5 V, R_i = 75 Ω, R_L = 150 Ω, maximum gain (1:2-Ω ratio transformer plus 30-dB DVGA gain), f = 5 MHz to
300 MHz, V_O converted to single-ended (SE) measurement with a transformer, and default current setting (unless otherwise
noted); upon power-up, gain is set to mid-range
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX
UNIT
TEST
LEVEL ⁽¹⁾
AC PERFORMANCE
LSBW
BW
Large-signal,
–3-dB bandwidth
Bandwidth for 0.1-dB flatness
G = 30 dB, V_O = 2 V_PP
G = 0 dB, V_O = 2 V_PP
1140
2350
300
C
MHz
C
MHz
C
HD2
HD3
IMD3
Second-order harmonic
distortion
Third-order harmonic
distortion
Third-order intermodulation
distortion
f = 100 MHz, V_O = 2 V_PP
f = 200 MHz, V_O = 2 V_PP
f = 300 MHz, V_O = 2 V_PP
f = 450 MHz, V_O = 2 V_PP
f = 100 MHz, V_O = 2 V_PP
f = 200 MHz, V_O = 2 V_PP
f = 300 MHz, V_O = 2 V_PP
f = 450 MHz, V_O = 2 V_PP
f = 100 MHz, tone spacing = 2 MHz,
P_OUT(2) = 0 dBm per tone
f = 200 MHz, tone spacing = 2 MHz
–88
–76
–63
–58
–94
–90
–81
–75
–106
–102
C
C
dBc
C
C
C
C
dBc
C
C
C
dBc
C
f = 300 MHz, tone spacing = 2 MHz
–86
C
OIP3
P1dB
NF
Output third-order intercept
point
1-dB compression point
Noise figure
Output-referred voltage noise
f = 100 MHz, tone spacing = 2 MHz,
P_OUT = 0 dBm per tone
f = 200 MHz, tone spacing = 2 MHz,
P_OUT = 0 dBm per tone
f = 300 MHz, tone spacing = 2 MHz,
P_OUT = 0 dBm per tone
f = 100 MHz, R_L = 150 Ω
f = 200 MHz, R_L = 150 Ω
f = 300 MHz, R_L = 150 Ω
R_i = 150 Ω, f = 300 MHz, max gain
f = 300 MHz, max gain
53
C
51
dBm
C
43
C
16
C
16
dBm
C
16.5
C
6.5
dB
C
47.7
nV/√Hz
C
S11
Input return loss
f = 300 MHz
17
dB
C
S22
Reverse Isolation
Including input transformer, f < 300 MHz
53
dB
C
f = 300 MHz, channel A to B
Channel-to-channel crosstalk
f = 300 MHz, channel B to A
–77
dB
C
–81
Channel-to-channel phase
matching
f = 200 MHz
±0.1
°
C
Channel-to-channel gain
matching
f = 200 MHz
±0.05
dB
C
GAIN PARAMETERS
Maximum voltage gain
f = dc, gain code = 00h
29.5
30
30.5 dB
A
Minimum voltage gain
f = dc, gain code = 27h
–9.5
–9
–8.5 dB
A
Gain range
39
dB
C
Gain step size
Between any two adjacent gain settings
0.75
1
1.25 dB
A
E_G
Gain error
Cumulative gain error
For any gain value
Referenced to max gain
–0.5
0
0.5 dB
A
–1
1 dB
A
Gain step transition time
6
ns
C
(1) Test levels: (A) 100% tested at 25°C. Overtemperature limits by characterization and simulation. (B) Limits set by characterization and
simulation. (C) Typical value only for information.
(2) P_OUT is the signal tone power at the output of the device.
6
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