Datasheet

OPA1641
OPA1642
OPA1644
www.ti.com 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 UNIT
AUDIO PERFORMANCE
0.00005 %
Total Harmonic Distortion +
THD+N G = +1, f = 1kHz, V
O
= 3V
RMS
Noise
–126 dB
Intermodulation Distortion IMD G = +1, V
O
= 3V
RMS
0.00004 %
SMPTE/DIN Two-Tone, 4:1 (60Hz and 7kHz)
–128 dB
0.00008 %
DIM 30 (3kHz square wave and 15kHz sine wave)
–122 dB
0.00007 %
CCIF Twin-Tone (19kHz and 20kHz)
–123 dB
FREQUENCY RESPONSE
Gain-Bandwidth Product GBW G = +1 11 MHz
Slew Rate SR G = +1 20 V/ms
Full-Power Bandwidth
(1)
V
O
= 1V
P
3.2 MHz
Overload Recovery Time
(2)
G = –10 600 ns
Channel Separation (Dual and Quad) f = 1kHz –126 dB
NOISE
Input Voltage Noise f = 20Hz to 20kHz 4.3 mV
PP
Input Voltage Noise Density e
n
f = 10Hz 8 nV/√Hz
f = 100Hz 5.8 nV/√Hz
f = 1kHz 5.1 nV/√Hz
Input Current Noise Density I
n
f = 1kHz 0.8 fA/√Hz
OFFSET VOLTAGE
Input Offset Voltage V
OS
V
S
= ±18V 1 3.5 mV
vs Power Supply PSRR V
S
= ±2.25V to ±18V 0.14 2 mV/V
INPUT BIAS CURRENT
Input Bias Current I
B
V
CM
= 0V ±2 ±20 pA
Input Offset Current I
OS
V
CM
= 0V ±2 ±20 pA
INPUT VOLTAGE RANGE
Common-Mode Voltage Range V
CM
(V–)-0.1 (V+)–3.5 V
Common-Mode Rejection Ratio CMRR V
CM
= (V–) – 0.1V to (V+) – 3.5V, V
S
= ±18V 120 126 dB
INPUT IMPEDANCE
Differential Ω || pF
10
13
|| 8
V
CM
= (V–) – 0.1V to (V+) – 3.5V
Common-Mode Ω || pF
10
13
|| 6
OPEN-LOOP GAIN
Open-Loop Voltage Gain A
OL
(V–) + 0.2V ≤ V
O
≤ (V+) – 0.2V, R
L
= 10kΩ 120 134 dB
(V–) + 0.35V ≤ V
O
≤ (V+) – 0.35V, R
L
= 2kΩ 114 126 dB
(1) Full power bandwidth = SR/(2p × V
P
), where SR = slew rate.
(2) See Figure 21 and Figure 22.
Copyright © 2009–2010, Texas Instruments Incorporated 3
Product Folder Link(s): OPA1641 OPA1642 OPA1644