Table 13. I2C Abbreviation Table Abbreviation Cond" />
參數(shù)資料
型號(hào)： AD1937WBSTZ
廠商： Analog Devices Inc
文件頁(yè)數(shù)： 10/36頁(yè)
文件大?。?/td> 0K
描述： IC CODEC 4/ADC DIFF OUT 64-LQFP
標(biāo)準(zhǔn)包裝： 1
類型： 通用
數(shù)據(jù)接口： 串行
分辨率（位）： 24 b
ADC / DAC 數(shù)量： 4 / 8
三角積分調(diào)變： 是
S/N 比，標(biāo)準(zhǔn) ADC / DAC (db)： 96 / 96
動(dòng)態(tài)范圍，標(biāo)準(zhǔn) ADC / DAC (db)： 105 / 110
電壓 - 電源，模擬： 3 V ~ 3.6 V
電壓 - 電源，數(shù)字： 3 V ~ 3.6 V
工作溫度： -40°C ~ 125°C
安裝類型： 表面貼裝
封裝/外殼： 64-LQFP
供應(yīng)商設(shè)備封裝： 64-LQFP（10x10）
包裝： 托盤(pán)
產(chǎn)品目錄頁(yè)面： 776 (CN2011-ZH PDF)
AD1937
Rev. B | Page 18 of 36
Table 13. I2C Abbreviation Table
Abbreviation
Condition
S
Repeated start by master
P
Stop by master
AM
Acknowledge by master
AS
Acknowledge by AD1937
Table 14. Single Word I2C Write
S
Chip Address, R/W = 0
AS
Register Address
AS
Data Word
AS
P
Table 15. Burst Mode I2C Write
S
Chip Address, R/W = 0
AS
Register Address
AS
Data Word 1
AS
Data Word 2
AS
Data Word N
AS
P
Table 16. Single Word I2C Read
S
Chip Address, R/W = 0
AS
Register Address
AS
S
Chip Address, R/W = 1
AS
Data Word
AM
P
Table 17. Burst Mode I2C Read
S
Chip Address,
R/W = 0
AS
Register
Address
AS
S
Chip Address,
R/W = 1
AS
Data
Word 1
AM
Data
Word 2
AM
Data
Word N
AM
P
POWER SUPPLY AND VOLTAGE REFERENCE
The AD1937 is designed for a 3.3 V supply. Separate power
supply pins are provided for the analog and digital sections.
To minimize noise pickup, these pins should be bypassed with
100 nF ceramic chip capacitors placed as close to the pins as
possible. A bulk aluminum electrolytic capacitor of at least
22 μF should also be provided on the same printed circuit
board (PCB) as the codec. For critical applications, improved
performance is obtained with separate supplies for the analog
and digital sections. If this is not possible, it is recommended
that the analog and digital load pins be isolated by means of a
ferrite bead in series with the supply. It is important that the
analog supply be as clean as possible.
The AD1937 includes a 3.3 V regulator driver that only requires
an external pass transistor, a resistor, and bypass capacitors to
turn a 5 V supply into 3.3 V. If the regulator driver is not used,
connect VSUPPLY, VDRIVE, and VSENSE to DGND.
All digital inputs are compatible with TTL and CMOS levels.
All outputs are driven from the 3.3 V DVDD supply and are
compatible with TTL and 3.3 V CMOS levels.
The ADC and DAC internal analog voltage reference (VREF) is
brought out on the FILTR pin and should be bypassed as close
as possible to the chip with a parallel combination of 10 μF and
100 nF capacitors. Any external current drawn should be limited
to less than 50 μA.
The internal reference can be disabled in the PLL and Clock
Control 1 register, and FILTR can be driven from an external
source. This can be used to scale the DAC output to the clipping
level of a power amplifier based on its power supply voltage.
The ADC input gain varies by the inverse ratio. It is not advisable
to drive the FILTR pin with more than (AVDD/2) V. The total
gain from ADC input to DAC output remains constant.
The CM pin should be bypassed as close as possible to the chip,
with a parallel combination of 47 μF and 100 nF capacitors. This
voltage can be used to bias external op amps to the common-mode
voltage of the input and output signal pins. The output current
should be limited to less than 0.5 mA source and 2 mA sink.
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AD1937WBSTZ-RL 功能描述:IC CODEC 4/ADC DIFF OUT 64-LQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 編解碼器 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- 類型:立體聲音頻 數(shù)據(jù)接口:串行 分辨率（位）:18 b ADC / DAC 數(shù)量:2 / 2 三角積分調(diào)變:是 S/N 比，標(biāo)準(zhǔn) ADC / DAC (db):81.5 / 88 動(dòng)態(tài)范圍，標(biāo)準(zhǔn) ADC / DAC (db):82 / 87.5 電壓 - 電源，模擬:2.6 V ~ 3.3 V 電壓 - 電源，數(shù)字:1.7 V ~ 3.3 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-WFQFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:48-TQFN-EP（7x7） 包裝:帶卷 (TR)
AD1937XSTZ 制造商:AD 制造商全稱:Analog Devices 功能描述:4 ADC/8 DAC with PLL, 192 kHz, 24 Bit CODEC
AD1937XSTZRL 制造商:AD 制造商全稱:Analog Devices 功能描述:4 ADC/8 DAC with PLL, 192 kHz, 24 Bit CODEC
AD1938 制造商:AD 制造商全稱:Analog Devices 功能描述:4 ADC/8 DAC with PLL, 192 kHz, 24-Bit CODEC
AD1938WBSTZ 功能描述:IC CODEC 24BIT 4ADC/8DAC 48LQFP RoHS:是 類別:集成電路 (IC) >> 接口 - 編解碼器 系列:- 標(biāo)準(zhǔn)包裝:2,500 系列:- 類型:立體聲音頻 數(shù)據(jù)接口:串行 分辨率（位）:18 b ADC / DAC 數(shù)量:2 / 2 三角積分調(diào)變:是 S/N 比，標(biāo)準(zhǔn) ADC / DAC (db):81.5 / 88 動(dòng)態(tài)范圍，標(biāo)準(zhǔn) ADC / DAC (db):82 / 87.5 電壓 - 電源，模擬:2.6 V ~ 3.3 V 電壓 - 電源，數(shù)字:1.7 V ~ 3.3 V 工作溫度:-40°C ~ 85°C 安裝類型:表面貼裝 封裝/外殼:48-WFQFN 裸露焊盤(pán) 供應(yīng)商設(shè)備封裝:48-TQFN-EP（7x7） 包裝:帶卷 (TR)
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