THAT2181 Datasheet, PDF (3/10 Pages) List of Unclassifed Manufacturers – Trimmable IC Voltage Controlled Amplifiers

600030 Rev 01
Page 3
Electrical Characteristics (Cont'd.)
2181A
2181B
2181C
Parameter
Symbol
Conditions
Min Typ Max Min Typ Max Min Typ Max Units
Total Harmonic Distortion THD
1 kHz
V_IN = 0 dBV, 0 dB gain — 0.0025 0.005 — 0.004 0.008 — 0.005 0.02 %
V_IN = +10 dBV, -15 dB gain — 0.018 0.025 — 0.025 0.035 — 0.035 0.07 %
V_IN = -5 dBV, +15 dB gain — 0.018 0.025 — 0.025 0.035 — 0.035 0.07 %
V_IN = +10 dBV, 0 dB gain — 0.004 0.008 — 0.006 0.010 — .0015 — %
Slew Rate
R_in = R_out = 20 kW
— 12 — — 12 — — 12 — V/ms
Symmetry Control Voltage V_SYM A_V = 0 dB, Minimum THD -0.5 — +0.5 -1.5 — +1.5 -2.5 — +2.5 mV
Gain at 0 V Control Voltage
E_C- = 0 mV
-0.1 0.0 +0.1 -0.15 0.0 +0.15 -0.2 0.0 +0.2 dB
Vcc
2181
Ec-
22p
Series
VCA ⁷
20k
V+ ³
IN
10u
20k
1
Ec-
-IN
SYM
Ec+
GND
V- ₆
2
4
5
OUT
8
-
OP275
+
OUT
Vcc
Power Supplies
Vcc = +15 V
Vee = -15 V
5.1k
Rsym
680k (2181A)
220k (2181B)
130k (2181C)
Vee
Figure 2. Typical Application Circuit
50k
SYM
ADJ
Vee
Figure 3. 2181 Series Frequency Response Vs. Gain
Figure 4. 2181 Series Noise (20kHz NBW) Vs. Gain
THAT Corporation; 45 Sumner Street; Milford, Massachusetts 01757-1656; USA
Tel: [phone]; Fax: [phone]; Web: www.thatcorp.com