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LC78816 Schematic ( PDF Datasheet ) - Sanyo Semicon Device

Teilenummer LC78816
Beschreibung 16-Bit D/A Converter for Use in Digital Audio Products
Hersteller Sanyo Semicon Device
Logo Sanyo Semicon Device Logo 




Gesamt 11 Seiten
LC78816 Datasheet, Funktion
Ordering number : EN*4250C
Preliminaly
CMOS LSI
LC78816MB, 78816MC
16-Bit D/A Converter for Use in
Digital Audio Products
Overview
The LC78816MB and 78816MC are 16-bit CMOS D/A
converters for use in digital audio products. They employ
a dynamic level shift conversion technique that combines
a resistor string (for the upper 9 bits), PWM (for the
middle 3 bits), and level shifting (for the lower 4 bits).
Features
• Two’s complement data format
• Two D/A converter channels built in (in-phase outputs)
• Maximum conversion frequency of 400 kHz (support for
8 times oversampling)
• Built-in output op amps
• No deglitching circuit required
• Si gate CMOS process (low power consumption)
• 5 V single-voltage power supply
• Low voltage (3.5 V) operation possible
Package Dimensions
unit: mm
3036B-MFP20
[LC78816MB, 78816MC]
SANYO: DIP20
Specifications
Absolute Maximum Ratings at Ta = 25°C
Parameter
Maximum power supply voltage
Input voltage
Output voltage
Operating temperature
Storage temperature
Symbol
VDD max
VIN
VOUT
Topr
Tstg
Allowable Operating Ranges
Parameter
Power supply voltage
Reference voltage high
Reference voltage low
Operating temperature
Symbol
VDD
VrefH
VrefL
Topr
Conditions
Ratings
–0.3 to +7.0
–0.3 to VDD + 0.3
–0.3 to VDD + 0.3
–30 to +75
–40 to +125
Unit
V
V
V
°C
°C
Conditions
min
3.5
VDD – 0.3
0
–30
Ratings
typ
5.0
max
5.5
VDD
0.3
+75
Unit
V
V
V
°C
SANYO Electric Co.,Ltd. Semiconductor Bussiness Headquarters
TOKYO OFFICE Tokyo Bldg., 1-10, 1 Chome, Ueno, Taito-ku, TOKYO, 110 JAPAN
63096HA (OT)/D1694TH(OT)/61893JN No. 4250-1/11






LC78816 Datasheet, Funktion
LC78816MB, 78816MC
D/A Conversion Technique Used in the LC78816MB and 78816MC
Figure 1 D/A Conversion Technique Used in the LC78816MB and 78816MC
Vref pins (See Figure 1.)
The Vref pins that provide the reference voltages for the resistor string are normally set at VrefH = 5 V and VrefL = 0 V.
Also, a capacitor of about 47 µF should be connected between REFH and AGND, and another between REFL and
AGND. As a result of the built-in resistors RH and RL, the maximum output amplitude of the LC78816MB and
78816MC is in a range of 0.5 V (min) to 3.8 V (max) (3.3 Vp-p) for 0 dB playback.
No. 4250-6/11

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