THS3491 Datasheet, PDF (7/28 Pages) Texas Instruments – 900-MHz, High-Power Output, Current Feedback Amplifier

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THS3491
SBOS875 – AUGUST 2017
Electrical Characteristics: V_S = ±15 V (continued)
at +V_S = 15 V, –V_S = –15 V, T_A = 25°C, R_LOAD = 100 Ω, noninverting gain = 5 V/V, and RGT package: R_F = 576 Ω,
R_G = 143 Ω, or DDA package: R_F = 798 Ω, R_G = 200 Ω (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN TYP MAX UNIT
JUNCTION-TEMPERATURE SENSE, T_j-sense (QFN-16 only, pin 6)
T_J-sense 25°C value
Device disabled (22°C to 32°C ATE
ambient temperature)
T_J-sense temperature coefficient T_J = 0°C to 125°C
T_J-sense input impedance
Internally connected to REF pin
0.915 1.06 1.15
V
2.9
3
3.3 mV/°C
32.4
35
38 kΩ
TEST
LEVEL
A
B
A
7.6 Electrical Characteristics: V_S = ±7.5 V
at +V_S = 7.5 V, –V_S = –7.5 V, T_A = 25°C, R_LOAD = 100 Ω, noninverting gain = 5 V/V, and RGT package: R_F = 576 Ω,
R_G = 143 Ω, or DDA Package: R_F = 798 Ω, R_G = 200 Ω (unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN TYP MAX UNIT
AC PERFORMANCE
SSBW Small-signal bandwidth
LSBW Large-signal bandwidth
SR
Slew rate (10%-90%)
HD2
Second-order harmonic
distortion
HD3 Third-order harmonic distortion
e_n
Input-referred voltage noise
e_ip
Noninverting, input-referred
current noise
e_in
Inverting, input-referred current
noise
Z_OUT Close-loop output impedance
DC PERFORMANCE
Z_OL
Open-loop transimpedance gain
V_OS
Input offset voltage
V_OS
drift
Input offset-voltage drift
I_b+
I_b+ drift
Noninverting input bias current
Noninverting input bias-current
drift
I_b-
I_b- drift
INPUT
Inverting input bias current
Inverting input bias-current drift
Z_IN+
Noninverting input impedance
Z_IN-
Inverting input impedance
HR_IN Headroom to either supply
OUTPUT
HR_OUT Headroom to either supply
Linear output current
POWER SUPPLY
I_Q
Quiescent current
V_O = 2 V_PP, < 0.5-dB peaking
V_O = 5 V_PP, < 1-dB peaking
V_O = 10 V_PP
f = 20 MHz, R_LOAD = 100 Ω, V_O = 5 V_PP
f = 20 MHz, R_LOAD = 100 Ω, V_O = 5 V_PP
f > 10 kHz
f > 10 kHz
f > 10 kHz
f = 50 MHz
V_O = ±5 V, R_LOAD = 500 Ω
–40°C ≤ T_J ≤ +125°C
–40°C ≤ T_J ≤ +125°C
–40°C ≤ T_J ≤ +125°C
Closed-loop measurement
Open-loop measurement
CMRR > 60 dB
R_LOAD = 100 Ω
R_LOAD = 24 Ω, V_O = ±5 V, Z_OL > 1M Ω,
Bipolar each polarity
No load
800
550
6000
–76
–82
1.7
15
20
1
8
14
–1.0
1
3
–5
1.5
15
–15
4
15
50
15
4.1
1.3
1.5
200
250
MHz
MHz
V/µs
dBc
dBc
nV/√Hz
pA/√Hz
pA/√Hz
Ω
MΩ
2 mV
µV/°C
5 µA
nA/°C
15 µA
nA/°C
kΩ
Ω
4.3
V
1.7
V
mA
15.4 15.8 16.4 mA
TEST
LEVEL
C
C
C
C
C
C
C
C
C
A
A
B
A
B
A
B
C
C
C
A
A
A
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