LMH2832 Datasheet, PDF (7/46 Pages) Texas Instruments – LMH2832 Fully Differential, Dual, 1.1-GHz, Digital Variable-Gain Amplifier

www.ti.com
LMH2832
SBOS709A – JULY 2016 – REVISED JULY 2016
Electrical Characteristics (continued)
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⁾
ANALOG INPUT CHARACTERISTICS
z_in
Input resistance
f = dc, differential
C_in
Input capacitance
Differential
Single-ended input resistance f = dc
135
150
165 Ω
A
0.6
pF
C
67.5
75
82.5 Ω
A
Single-ended input
capacitance
1.2
pF
C
V_ICM
Input common-mode voltage Internally biased to mid-supply
V_IL
Low-level input voltage range Differential gain shift < 1 dB
V_IH
High-level input voltage range Differential gain shift < 1 dB
ANALOG OUTPUT CHARACTERISTICS
–0.2
0.2 V
A
(V_S–) + 1.5
(V_S+) – 1.5
V
C
V
C
z_o
Output resistance
V_OL
Low-level output voltage
range
Differential
V_S = 5 V, GND = 0 V
20
Ω
C
1.15
1.25 V
A
V_OH
High-level output voltage
range
V_S = 5 V, GND = 0 V
3.75
3.85
V
A
V_OM
CMRR
Maximum output voltage
swing
Common-mode rejection ratio
T_A = 25°C
T_A = –40°C to +85°C
5
5.4
A
V
5.4
6.4
B
56
dB
C
POWER SUPPLY
V_S
Supply voltage
Default current, default bias setting
4.75
5.0
5.25 V
A
102
105
108
A
I_Q
Quiescent current per channel
±PSRR Power-supply rejection ratio⁽³⁾
POWER-DOWN ⁽⁴⁾
Min current, lowest power setting
Max current, highest bias setting
Gain = 30 dB
90
mA
C
108
C
–48
dB
C
Power-down quiescent current ^TA ^{= 25°C}
(per channel)
T_A = –40°C to +85°C
Power-down bias current
2.5
6
A
mA
6.5
B
–2
–1
µA
A
Turn-on time delay
Turn-off time delay
Forward isolation in PD mode
Time to V_O = 90% of final value,
gain = 0 dB, V_I = 2 V
Time to V_O = 10% of original value,
gain = 0 dB, V_I = 2 V
f = 300 MHz
55
ns
C
110
ns
C
–67
dB
C
DIGITAL INPUTS/OUTPUTS
V_IH
High-level input voltage
V_IL
Low-level input voltage
V_OH
High-level output voltage
I_OH = –100 µA
I_OH = –2 mA
V_OL
Low-level output voltage
I_OL = 100 µA
I_OL = 2 mA
1.4
2V
A
–0.3
0.8 V
A
1.65
A
V
1.55
A
0.1
A
V
0.2
A
(3) PSRR is defined with respect to a differential output.
(4) The device power-down function can be controlled by the PDx pins or by the power-down register accessible from the SPI interface.
Copyright © 2016, Texas Instruments Incorporated
Product Folder Links: LMH2832
Submit Documentation Feedback
7