THS4541-Q1 Datasheet, PDF (10/60 Pages) Texas Instruments – 850-MHz Fully Differential Amplifier

THS4541-Q1
SLOS930A – NOVEMBER 2015 – REVISED NOVEMBER 2015
www.ti.com
Electrical Characteristics: (Vs+) – Vs– = 3 V (continued)
At T_A ≈ 25°C, Vocm = open (defaults midsupply), V_OUT = 2 V_PP, Rf = 402 Ω, Rload = 499 Ω, 50-Ω input match, G = 2 V/V,
single-ended input, differential output, and PD = +Vs, unless otherwise noted. See Figure 61 for an AC-coupled gain of a 2-
V/V test circuit, and Figure 63 for a DC-coupled gain of a 2-V/V test circuit.
PARAMETER
TEST CONDITIONS
MIN
TYP
MAX UNIT
TEST
LEVEL ⁽¹⁾
POWER SUPPLY
Specified operating voltage
2.7
3
5.4
V
B
Quiescent operating current
±PSR
R
Power-supply rejection ratio
T_A = 25°C, Vs+ = 3V
T_A = –40°C to +125°C
Either supply pin to differential Vout
9.3
9.7
10.1 mA
A
9
9.7
10.6 mA
B
85
100
dB
A
POWER DOWN
Enable voltage threshold
(Vs–) +
1.7
V
A
Disable voltage threshold
(Vs–) +
0.7
V
A
Disable pin bias current
PD = Vs– → Vs+
20
50
nA
B
Power-down quiescent current
PD = (Vs–) + 0.7 V
PD = Vs–
2
30
µA
A
1.0
8.0
µA
A
Turn-on time delay
Time from PD = low to Vout = 90% of final value
100
ns
C
Turn-off time delay
Time from PD = low to Vout = 10% of final value
OUTPUT COMMON-MODE VOLTAGE CONTROL⁽⁴⁾
60
ns
C
Small-signal bandwidth
Slew rate⁽²⁾
Vocm = 100 mV_PP
Vocm = 1-V step
140
MHz
C
350
V/µs
C
Gain
0.975
0.987
0.990 V/V
A
Input bias current
Considered positive out of node
–0.7
0.1
0.7
µA
A
Input impedance
Vocm input driven to ((Vs+) – Vs–) / 2
47 || 1.2
kΩ || pF
C
Default voltage offset from
((Vs+) – Vs–) / 2
Vocm pin open
–40
±10
40 mV
A
T_A = 25°C
CM
Vos
Common-mode offset voltage
Vocm input driven to ^TA ^{= 0°C to 70°C}
((Vs+) – Vs–) / 2
T_A = –40°C to +85°C
T_A = –40°C to +125°C
Common-mode offset voltage drift⁽³⁾ Vocm input driven to ((Vs+) – Vs–) / 2
–5
±2
5 mV
A
–5.8
±2
5.8 mV
B
–6.2
±2
6.2 mV
B
–7
±2
7 mV
B
–20
±4
20 µV/°C
B
T_A = 25°C
0.88
Common-mode loop supply
< ±12-mV shift from ^TA ^{= 0°C to 70°C}
0.91
headroom to negative supply
midsupply CM Vos _{TA = –40°C to +85°C}
0.94
T_A = –40°C to +125°C
0.94
T_A = 25°C
1.1
Common-mode loop supply
< ±12-mV shift from ^TA ^{= 0°C to 70°C}
1.15
headroom to positive supply
midsupply CM Vos _{TA = –40°C to +85°C}
1.2
T_A = –40°C to +125°C
1.2
V
A
V
B
V
B
V
B
V
A
V
B
V
B
V
B
(4) Specifications are from input Vocm pin to differential output average voltage.
10
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