OPA1641_15 Datasheet, PDF (3/29 Pages) Texas Instruments – High-Performance, JFET-Input AUDIO OPERATIONAL AMPLIFIERS

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OPA1641
OPA1642
OPA1644
SBOS484B – DECEMBER 2009 – REVISED AUGUST 2010
ELECTRICAL CHARACTERISTICS: V_S = +4.5V to +36; ±2.25V to ±18V
At T_A = +25°C, R_L = 2kΩ connected to midsupply, V_CM = V_OUT = midsupply, unless otherwise noted.
OPA1641, OPA1642, OPA1644
PARAMETER
CONDITIONS
MIN
TYP
MAX
AUDIO PERFORMANCE
Total Harmonic Distortion +
Noise
THD+N
G = +1, f = 1kHz, V_O = 3V_RMS
0.00005
–126
Intermodulation Distortion
IMD
G = +1, V_O = 3V_RMS
SMPTE/DIN Two-Tone, 4:1 (60Hz and 7kHz)
0.00004
–128
DIM 30 (3kHz square wave and 15kHz sine wave)
0.00008
–122
CCIF Twin-Tone (19kHz and 20kHz)
0.00007
–123
FREQUENCY RESPONSE
Gain-Bandwidth Product
GBW
G = +1
11
Slew Rate
SR
G = +1
20
Full-Power Bandwidth⁽¹⁾
V_O = 1V_P
3.2
Overload Recovery Time⁽²⁾
G = –10
600
Channel Separation (Dual and Quad)
f = 1kHz
–126
NOISE
Input Voltage Noise
f = 20Hz to 20kHz
4.3
Input Voltage Noise Density
e_n
f = 10Hz
8
f = 100Hz
5.8
f = 1kHz
5.1
Input Current Noise Density
I_n
f = 1kHz
0.8
OFFSET VOLTAGE
Input Offset Voltage
vs Power Supply
INPUT BIAS CURRENT
V_OS
PSRR
V_S = ±18V
V_S = ±2.25V to ±18V
1
3.5
0.14
2
Input Bias Current
I_B
Input Offset Current
I_OS
INPUT VOLTAGE RANGE
V_CM = 0V
V_CM = 0V
±2
±20
±2
±20
Common-Mode Voltage Range
Common-Mode Rejection Ratio
INPUT IMPEDANCE
V_CM
CMRR
V_CM = (V–) – 0.1V to (V+) – 3.5V, V_S = ±18V
(V–)-0.1
(V+)–3.5
120
126
Differential
10¹³ || 8
Common-Mode
V_CM = (V–) – 0.1V to (V+) – 3.5V
10¹³ || 6
OPEN-LOOP GAIN
Open-Loop Voltage Gain
A_OL
(V–) + 0.2V ≤ V_O ≤ (V+) – 0.2V, R_L = 10kΩ
(V–) + 0.35V ≤ V_O ≤ (V+) – 0.35V, R_L = 2kΩ
120
134
114
126
(1) Full power bandwidth = SR/(2p × V_P), where SR = slew rate.
(2) See Figure 21 and Figure 22.
UNIT
%
dB
%
dB
%
dB
%
dB
MHz
V/ms
MHz
ns
dB
mV_PP
nV/√Hz
nV/√Hz
nV/√Hz
fA/√Hz
mV
mV/V
pA
pA
V
dB
Ω || pF
Ω || pF
dB
dB
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