THS3491 Datasheet, PDF (8/28 Pages) Texas Instruments – 900-MHz, High-Power Output, Current Feedback Amplifier

THS3491
SBOS875 – AUGUST 2017
www.ti.com
Electrical Characteristics: V_S = ±7.5 V (continued)
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
POWER DOWN
Allowed REF pin voltage range
Recommended REF pin voltage
REF pin can be floated. PD pin must be
floated or held above REF pin. If REF is
tied to +V_S, the device is enabled with PD
floating. Range is –V_S to (+V_S – 5 V)
For bipolar supplies, normally ground REF
pin
REF pin current to ground
REF = 0 V, PD floated, positive out of the
pin
V_IL
Disable voltage threshold
PD below REF pin voltage turns amplifier
off, PD within 0.8 V of REF is off,
REF pin = 0 V
V_IH
Enable voltage threshold
PD above REF pin voltage turns amplifier
on, PD > 1.6 V above REF is on,
REF pin = 0 V
PD pin low-input bias current PD = REF = gnd, positive out of the pin
PD pin high-input bias current
PD = REF + 3 V, REF = ground, positive
out of the pin
+V_S Disabled supply current
–V_S Disabled supply current
JUNCTION-TEMPERATURE SENSE, T_j-sense (QFN-16 only, pin 6)
T_J-sense temperature coefficient T_J = 0°C to 125°C
T_J-sense input impedance
Internally connected to REF pin
T_J-sense 25°C value
Device disabled (22°C to 32°C ATE
ambient temperature)
–7.5
0
35
37
1.6
17
21
–1
2
600
700
550
642
2.9
3
32.4
35
0.915 1.06
2.5
V
V
52
µA
0.8
V
V
25 µA
1 µA
850 µA
770 µA
3.3 mV/°C
38 kΩ
1.15
V
TEST
LEVEL
C
C
A
A
A
A
A
A
A
B
A
A
8
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