LMH6401_16 Datasheet, PDF (7/48 Pages) Texas Instruments – LMH6401 DC to 4.5 GHz, Fully-Differential, Digital Variable-Gain Amplifier

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LMH6401
SBOS730A – APRIL 2015 – REVISED MAY 2015
Electrical Characteristics (continued)
At T_A = 25°C, VS– = –2.5 V, VS+ = 2.5 V, VOCM = 0 V, R_LOAD = 200-Ω differential (R_{o(internal, diff)} = 20 Ω), V_O = 2 V_PPD, and A_V
= 26 dB, unless otherwise noted.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNIT
TEST
LEVEL ⁽¹⁾
ANALOG INPUT CHARACTERISTICS
R_i
C_i
V_ICM
V_ICLR
Input resistance
Input capacitance
Input common-mode voltage
Low-level input common-mode
voltage range
Differential
Differential
Self-biased to mid-supply
Differential gain shift < 1 dB
85
100
112 Ω
A
0.8
pF
C
–0.3
0.3 V
A
(VS–) + 1.5
V
C
V_ICHR
High-level input common-mode
voltage range
Differential gain shift < 1 dB
(VS+) – 1.5
V
C
ANALOG OUTPUT CHARACTERISTICS
R_o
V_OL
V_OH
V_OM
CMRR
Output resistance
Low-level output voltage range
High-level output voltage range
Maximum output voltage swing
Common-mode rejection ratio
Differential
Low-level clipping level
High-level clipping level
Differential
±0.3-V input common-mode shift
18
20
25 Ω
A
(VS–) + 1 (VS–) + 1.1 V
A
(VS+) – 1.1 (VS+) – 1
V
A
6.0
38.4
45
V_PPD
C
dB
A
POWER SUPPLY
V_S
Supply voltage [V = (VS+) – (VS–)]
Minimum positive (VS+) supply
voltage
4.0
5.0
5.25 V
A
2.0
V
A
PSRR Power-supply rejection ratio
VS–, measured at 1-kHz sine-wave
VS+, measured at 1-kHz sine-wave
66
70
66
70
dB
A
dB
A
I_Q
Quiescent current
PD = 0 (device enabled)
PD = 1 (device disabled)
60
69
78 mA
A
1
7
12 mA
A
OUTPUT COMMON-MODE CONTROL (VOCM Pin)
SSBW
Small-signal bandwidth
VOCM voltage range low
VOCM = 200 mV_PP
VOCM gain < 2%
160
–0.5
MHz
C
V
A
VOCM voltage range high
VOCM gain < 2%
0.5 V
A
V_OO
Output offset voltage
VOCM gain
All gain settings
–40
1.0
40 mV
A
V
C
V_OCM
Common-mode offset voltage
POWER DOWN (PD Pin)
VOCM pin driven to GND
–10
10 mV
A
Power-down quiescent current
1
7
12 mA
A
PD bias current
PD = 2.5 V
80
100 µA
A
Turn-on time delay
Turn-off time delay
DIGITAL INPUT/OUTPUT
Time to V_O = 90% of final value
Time to V_O = 10% of original value
70
ns
C
10
ns
C
V_IH
High-level input voltage
V_IL
Low-level input voltage
V_OH
High-level output voltage
V_OL
Low-level output voltage
Referred to GND
Referred to GND
1 kΩ to GND
1 kΩ to GND
1.2
VS+ V
A
0.8 V
A
1.4
V
A
0.4 V
A
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