参数资料
型号: LA7790M
元件分类: 消费家电
英文描述: SPECIALTY CONSUMER CIRCUIT, PDSO24
封装: MFP-24
文件页数: 13/14页
文件大小: 174K
代理商: LA7790M
1. Modulator
The modulator consists of two identical multiplier circuits, creating I and Q channels. Pins 4 & 5 and pins 8 & 9 are I
and Q channel inputs, respectively. These pins must be biased at 2.1 ± 0.2 V. Pin 6 is an internal 2.1 V bias. This
internal bias can be used if the I & Q data inputs are AC coupled, but an external bias must be used in the case of DC
coupled data inputs. Carrier suppression is improved if the offset voltages between pins 4 & 5 and pins 8 & 9 are
small.
(1) AC coupled application
(2) DC coupled application
No. 5689-8/14
LA7790M
4
+
I input
Q input
2.1 V
+
9
8
6
5
4
+
I input
2.1 V
Q input
+
9
8
6
5
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