THS4561 Datasheet, PDF (12/35 Pages) Texas Instruments – Low-Power, High Supply Range, 70-MHz, Fully Differential Amplifier

THS4561
SBOS874 – AUGUST 2017
www.ti.com
Electrical Characteristics: V_S+ – V_S– = 3 V (continued)
at T_A = 25℃, V_S+ = 3.0 V, V_S– = 0 V, V_OCM = Open, V_O = 1 V_PP, R_F = 1.5 kΩ, R_L = 1 kΩ, 50-Ω input match, differential,
G = 1 V/V, single-ended input, differential output, and input and output referenced to default midsupply for ac-coupled tests
(unless otherwise noted)
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNIT
TEST
LEVEL
CMRR Common-mode rejection ratio
Input impedance differential mode
OUTPUT
Inputs at (V_S+ – V_S–) / 2
Inputs at (V_S+ – V_S–) / 2
90
105
150||2.4
dBc
A
kΩ || pF
C
V_OCRL Output voltage range low
T_A = 25°C
T_A = –40°C to 125°C
V_OCRH Output voltage range high
T_A = 25°C
T_A = –40°C to 125°C
Continuous output current
T_A = 25°C, V_o = ±0.9 V, R_L = 50 Ω,
V_OCM offset < ±15 mV
T_A = –40°C to 125°C, V_o = ±0.75 V,
R_L = 50 Ω, V_OCM offset < ±15 mV
Linear output current
T_A = 25°C, V_o = ±1.9 V, R_L = 124 Ω,
A_OL > 80 dB
T_A = –40°C to 125°C, V_o = ±1.3 V,
R_L = 124 Ω, A_OL > 75 dB
OUTPUT COMMON-MODE VOLTAGE (V_OCM) CONTROL
Small-signal bandwidth from V_OCM
pin
V_OCM = 100 mV_PP
V_S– + 0.15 V_S– + 0.21
V
A
V_S– + 0.2 V_S– + 0.35
V
C
V_S+ – 0.21 V_S+ – 0.15
V
A
V_S+ – 0.35
V_S+ – 0.2
V
C
±18
±35
mA
A
±14
mA
B
±14
±18
mA
A
±10
mA
B
20
MHz
C
Large-signal bandwidth from V_OCM
pin
V_OCM = 0.6 V_PP
3
MHz
C
Slew rate from V_OCM pin
DC output balance
Output balance SSBW
Output balance LSBW
Gain from V_OCM pin
Input bias current V_OCM pin
Input impedance V_VOCM pin
Default V_OCM offset from
(V_S+ – V_S–) / 2
V_OCM common-mode offset voltage
V_OCM common-mode offset voltage
drift
V_OCM = 0.5-V step
V_OCM fixed midsupply,
V_o/V_OCM (V_o = ±1 V)
V_OCM fixed midsupply,
V_o/V_OCM (–3 dB from dc)
V_OCM fixed midsupply,
V_o/V_OCM with V_o = 5 V_PP (–3 dB from dc)
V_OCM = 0 V
V_OCM input pin floating
T_A = 25°C, V_OCM input driven to
(V_S+ – V_S–) / 2
T_A = 0°C to 70°C,
V_OCM input driven to (V_S+ – V_S–) / 2
T_A = –40°C to 85°C,
V_OCM input driven to (V_S+ – V_S–) / 2
T_A = –40°C to 125°C,
V_OCM input driven to (V_S+ – V_S–) / 2
T_A = –40°C to 125°C
75
0.997
–0.2
–40
–3.5
3.1
80
600
400
0.999
–0.1
200||1.5
±10
±1
–15
±2
V/µs
C
dB
A
kHz
C
kHz
C
1.001 V/V
A
0.2 µA
A
kΩ || pF
C
40 mV
A
3.5 mV
A
mV
B
mV
B
mV
B
15 µV/°C
B
V_OCM headroom to negative supply
voltage
T_A = 25°C,
< ±5-mV shift from midsupply offset
T_A = –40°C to 125°C,
< ±5-mV shift from midsupply offset
0.45
0.5
V
A
0.6
V
B
V_OCM headroom to positive supply
voltage
T_A = 25°C,
< ±5-mV shift from midsupply offset
T_A = –40°C to 125°C,
< ±5-mV shift from midsupply offset
1.1
1.2
V
A
1.3
V
B
12
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