![](http://datasheet.mmic.net.cn/National-Semiconductor/LM1894M-NOPB_datasheet_105325/LM1894M-NOPB_4.png)
SNAS551C – DECEMBER 1994 – REVISED APRIL 2013
Electrical Characteristics (continued)
VS = 8V, TA = 25°C, VIN = 300 mV at 1 kHz, circuit shown in Figure 1 unless otherwise specified Parameter
Conditions
Min
Typ
Max
Units
CONTROL SIGNAL PATH
Summing Amplifier Voltage Gain
Both Channels Driven
0.9
1
1.1
V/V
Gain Amplifier Input Impedance
Pin 6
24
30
39
k
Ω
Voltage Gain
Pin 6 to Pin 8
21.5
24
26.5
V/V
Peak Detector Input Impedance
Pin 9
560
700
840
Ω
Voltage Gain
Pin 9 to Pin 10
30
33
36
V/V
Attack Time
Measured to 90% of Final Value with
300
500
700
μs
10 kHz Tone Burst
Decay Time
Measured to 90% of Final Value with
60
45
75
ms
10 kHz Tone Burst
DC Voltage Range
Minimum Bandwidth to Maximum
1.1
3.8
V
Bandwidth
4
Copyright 1994–2013, Texas Instruments Incorporated