THS4521_10 Datasheet, PDF (3/48 Pages) Texas Instruments – VERY LOW POWER, NEGATIVE RAIL INPUT, RAIL-TO-RAIL OUTPUT, FULLY DIFFERENTIAL AMPLIFIER

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THS4521
THS4522
THS4524
SBOS458D – DECEMBER 2008 – REVISED AUGUST 2010
ELECTRICAL CHARACTERISTICS: V_S+ – V_S– = 3.3 V
At V_S+ = +3.3 V, V_S– = 0 V, V_OCM = open, V_OUT = 2 V_PP (differential), R_L = 1 kΩ differential, G = 1 V/V, single-ended input,
differential output, input and output referenced to midsupply, unless otherwise noted.
PARAMETER
CONDITIONS
THS4521, THS4522, THS4524
MIN
TYP
MAX
UNIT
TEST
LEVEL ⁽¹⁾
AC PERFORMANCE
Small-Signal Bandwidth
Gain Bandwidth Product
Large-Signal Bandwidth
Bandwidth for 0.1-dB Flatness
Rising Slew Rate (Differential)
Falling Slew Rate (Differential)
Overshoot
Undershoot
Rise Time
Fall Time
Settling Time to 1%
Harmonic Distortion
2nd harmonic
V_OUT = 100 mV_PP, G = 1
V_OUT = 100 mV_PP, G = 2
V_OUT = 100 mV_PP, G = 5
V_OUT = 100 mV_PP, G = 10
V_OUT = 100 mV_PP, G = 10
V_OUT = 2 V_PP, G = 1
V_OUT = 2 V_PP, G = 1
V_OUT = 2-V Step, G = 1, R_L = 200 Ω
V_OUT = 2-V Step, G = 1, R_L = 200 Ω
V_OUT = 2-V Step, G = 1, R_L = 200 Ω
V_OUT = 2-V Step, G = 1, R_L = 200 Ω
V_OUT = 2-V Step, G = 1, R_L = 200 Ω
V_OUT = 2-V Step, G = 1, R_L = 200 Ω
V_OUT = 2-V Step, G = 1, R_L = 200 Ω
f = 1 kHz, V_OUT = 1 V_RMS, G = 1⁽²⁾,
differential input
135
49
18.6
9.3
93
95
20
420
460
1.2
2.1
4
3.5
13
–122
MHz
C
MHz
C
MHz
C
MHz
C
MHz
C
MHz
C
MHz
C
V/ms
C
V/ms
C
%
C
%
C
ns
C
ns
C
ns
C
dBc
C
3rd harmonic
f = 1 MHz, V_OUT = 2 V_PP, G = 1
f = 1 kHz, V_OUT = 1 V_RMS, G = 1⁽²⁾,
differential input
–85
–141
dBc
C
dBc
C
Second-Order Intermodulation Distortion
Third-Order Intermodulation Distortion
Input Voltage Noise
f = 1 MHz, V_OUT = 2 V_PP, G = 1
Two-tone, f₁ = 2 MHz, f₂ = 2.2 MHz,
V_OUT = 2-V_PP envelope
Two-tone, f₁ = 2 MHz, f₂ = 2.2 MHz,
V_OUT = 2-V_PP envelope
f > 10 kHz
–90
dBc
C
–83
dBc
C
–90
dBc
C
4.6
nV/√Hz
C
Input Current Noise
f > 100 kHz
0.6
pA/√Hz
C
Overdrive Recovery Time
Overdrive = ±0.5 V
80
ns
C
Output Balance Error
Closed-Loop Output Impedance
V_OUT = 100 mV, f ≤ 2 MHz (differential input)
–57
f = 1 MHz (differential)
0.3
dB
C
Ω
C
Channel-to-Channel Crosstalk (THS4522,
THS4524)
f = 10 kHz, measured differentially
–125
dB
C
DC PERFORMANCE
Open-Loop Voltage Gain (A_OL)
Input-Referred Offset Voltage
Input offset voltage drift⁽³⁾
Input Bias Current
Input bias current drift⁽³⁾
Input Offset Current
Input offset current drift⁽³⁾
T_A = +25°C
T_A = –40°C to +85°C
T_A = –40°C to +85°C
T_A = +25°C
T_A = –40°C to +85°C
T_A = –40°C to +85°C
T_A = +25°C
T_A = –40°C to +85°C
T_A = –40°C to +85°C
100
116
dB
A
±0.2
±2
mV
A
±0.5
±3.5
mV
B
±2
mV/°C
C
0.65
0.85
mA
B
0.75
0.95
mA
B
±1.75
±2
nA/°C
B
±50
±60
pA
B
±60
±70
pA
B
±0.16
±0.25 pA/°C
B
(1) Test levels: (A) 100% tested at +25°C. Over temperature limits set by characterization and simulation. (B) Limits set by characterization
and simulation. (C) Typical value only for information.
(2) Not directly measureable; calculated using noise gain of 101 as described in the Applications section, Audio Performance.
(3) Input Offset Voltage Drift, Input Bias Current Drift, and Input Offset Current Drift are average values calculated by taking data at –40°C
and +85°C, computing the difference, and dividing by 125.
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Product Folder Link(s): THS4521 THS4522 THS4524