MSM6996H 查看數據表（PDF） - Oki Electric Industry

零件编号

产品描述 (功能)

比赛名单

MSM6996H

Single Chip CODEC

Oki Electric Industry 

¡ Semiconductor

MSM6996H/6996V/6997H/6997V/6998/6999

PIN AND FUNCTIONAL DESCRIPTIONS

AIN+, AIN–, GSX

These three pins are used for the transmit level adjustment.

AIN+ is a non-inverting analog input pin which is connected to the non-inverting input of a transmit

amplifier.

AIN– is an inverting analog input pin which is connected to the inverting input of the transmit

amplifier.

GSX is a transmit amplifier output pin.

Adjustment can be done by following method.

Analog C1

Input

R1

AIN+

+

AIN–

–

R2

GSX

RC

Active

Filter

R3

R2

Gain = 1 + R3 < 10

AG

Notes: 1. R2 + R3 > 10 kW

2. When the DC off-set voltage of analog input is more than 20 mV, C1 and R1 should

provide for DC blocking.

In this case, cut-off frequency of HPF, composed by R1 and C1, should be less than 30 Hz.

3. R1 should be less than 20 kW

AG

AG is an analog ground.

AG is connected to the analog system ground.

AOUT

AOUT is the analog signal output pin for the MSM6996H/V and MSM6997H/V.

The output voltage range is 5 VPP. This output can drive the 600 W resistor.

AOUT+, AOUT–

Analog output for the MSM6998 and MSM6999.

The output signal amplitudes are 5 VPP. The AOUT– output is inverted to the AOUT+ output. These

outputs can drive a 600 W impedance.

VDD

VDD is the positive power supply.

The voltage supplied to this pin should be +5 V ±5%.

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