Zakładka z wyszukiwarką danych komponentów
  Polish  ▼
ALLDATASHEET.PL

X  

AD74111YRU Arkusz danych(PDF) 9 Page - Analog Devices

Numer części AD74111YRU
Szczegółowy opis  Low Cost, Low Power Mono Audio Codec
Download  20 Pages
Scroll/Zoom Zoom In 100%  Zoom Out
Producent  AD [Analog Devices]
Strona internetowa  http://www.analog.com
Logo AD - Analog Devices

AD74111YRU Arkusz danych(HTML) 9 Page - Analog Devices

Back Button AD74111YRU Datasheet HTML 5Page - Analog Devices AD74111YRU Datasheet HTML 6Page - Analog Devices AD74111YRU Datasheet HTML 7Page - Analog Devices AD74111YRU Datasheet HTML 8Page - Analog Devices AD74111YRU Datasheet HTML 9Page - Analog Devices AD74111YRU Datasheet HTML 10Page - Analog Devices AD74111YRU Datasheet HTML 11Page - Analog Devices AD74111YRU Datasheet HTML 12Page - Analog Devices AD74111YRU Datasheet HTML 13Page - Analog Devices Next Button
Zoom Inzoom in Zoom Outzoom out
 9 / 20 page
background image
REV. 0
AD74111
–9–
ADC
MODULATOR
64
f
S
5th ORDER
COMB FILTER
HALF-BAND
8
f
S
4
f
S
COMB
COMPENSATION
2
f
S
HALF-BAND
f
S
ADC
RESULT
LOW GROUP
DELAY OUTPUT
Figure 5a. ADC Filter Section
DAC
MODULATOR
128
f
S
16
ZERO
ORDER HOLD
HALF-BAND
FILTER
8
f
S
4
f
S
ZERO ORDER HOLD
SINC COMPENSATION
FILTER
2
f
S
HALF-BAND–
FILTER
f
S
DAC
INPUT
LOW GROUP
DELAY INPUT
Figure 5b. DAC Filter Section
ADC, CAPP, and CAPN Pins
The ADC channel requires two external capacitors to act as
charge reservoirs for the switched capacitor inputs of the sigma-
delta modulator. These capacitors isolate the outputs of the PGA
stage from glitches generated by the sigma-delta modulator. The
capacitor also forms a low-pass filter with the output impedance
of the PGA (approximately 124
Ω), which helps to isolate noise
from the modulator engine. The capacitors should be of good
quality, such as NPO or polypropylene film, with values from
100 pF to 1 nF and should be connected to AGND.
Peak Readback
The AD74111 can store the highest ADC value to facilitate level
adjustment of the input signal. Programming the Peak Enable
bit in Control Register E with a 1 will enable ADC Peak Level
Reading. The peak value is stored as a 6-bit number from 0 dB
to –63 dB in 1 dB steps. Reading Control Register F will give the
highest ADC value since the bit was set. The ADC peak register
is automatically cleared after reading.
Decimator Section
The digital decimation filter has a pass-band ripple of 0.2 mdB
and a stop-band attenuation of 120 dB. The filter is an FIR type
with a linear phase response. The group delay at 48 kHz is
910
µs. Output sample rates up to 48 kHz are supported.
Input Signal Swing
The ADC input has an input range of 0.5 V rms/1.414 V p-p
about a bias point equal to VREFCAP. Figure 6 shows a typical
input filter circuit for use with the AD74111.
VIN
VAGND
1.414V p-p
51
10nF
NPO
47 F
Figure 6. Typical Input Circuit
DAC Section
The AD74111 DAC channel has a single-ended, analog output.
The DAC has independent software controllable Mute and Volume
Control functions. Control Register G controls the attenuation
factor for the DAC. This register is 10 bits wide, giving 1024
steps of attenuation. The AD74111 output channel employs a
multibit sigma-delta conversion technique that provides a high
quality output with system filtering implemented on-chip.
Output Signal Swing
The DAC has an output range of 0.5 V rms/1.414 V p-p about
a bias point equal to VREFCAP (see Figure 7).
VREFCAP
1.414V p-p
820
2n2F
NPO
VOUT
Figure 7. Typical Output Circuit
Low Group Delay
It is possible to bypass much of the digital filtering by enabling
the Low Group Delay function in Control Register C. By reduc-
ing the amount of filtering the AD74111 applies to input and
output samples, the time delay between the sampling interval
and when the sample is available is greatly reduced. This can be
of benefit in applications such as telematics, where minimal
time delays are important. When the Low Group Delay function
is enabled, the sample rate becomes IMCLK/128.
Reference
The AD74111 features an on-chip reference whose nominal
value is 1.125 V. A 100 nF ceramic and 10
µF tantalum capacitor
applied at the REFCAP pin are necessary to stabilize the reference.
(See Figure 8.)
REFCAP
0.1 F
10 F
Figure 8. Reference Decoupling
If required, an external reference can be used as the reference
source of the ADC and DAC sections. This may be desirable in
situations where multiple devices are required to use the same
value of reference or because of a better temperature coefficient
specification. The internal reference can be disabled via Control
Register A and the external reference applied at the REFCAP
pin (see Figure 9). External references should be of a suitable
value such that the voltage swing of the inputs or outputs is not
affected by being too close to the power supply rails and should
be adequately decoupled.


Podobny numer części - AD74111YRU

ProducentNumer częściArkusz danychSzczegółowy opis
logo
Analog Devices
AD74111YRU AD-AD74111YRU Datasheet
214Kb / 20P
   Low Cost, Low Power Mono Audio Codec
REV. 0
AD74111YRU AD-AD74111YRU Datasheet
350Kb / 20P
   Low Cost, Low Power Mono Audio Codec
REV. 0
AD74111YRUZ AD-AD74111YRUZ Datasheet
214Kb / 20P
   Low Cost, Low Power Mono Audio Codec
REV. 0
AD74111YRUZ AD-AD74111YRUZ Datasheet
350Kb / 20P
   Low Cost, Low Power Mono Audio Codec
REV. 0
AD74111YRUZ-REEL AD-AD74111YRUZ-REEL Datasheet
214Kb / 20P
   Low Cost, Low Power Mono Audio Codec
REV. 0
More results

Podobny opis - AD74111YRU

ProducentNumer częściArkusz danychSzczegółowy opis
logo
Analog Devices
AD74111YRUZ AD-AD74111YRUZ Datasheet
350Kb / 20P
   Low Cost, Low Power Mono Audio Codec
REV. 0
AD74111 AD-AD74111_17 Datasheet
282Kb / 21P
   Low Cost, Low Power Mono Audio Codec
AD74111YRUZ AD-AD74111YRUZ Datasheet
214Kb / 20P
   Low Cost, Low Power Mono Audio Codec
REV. 0
AD74111YRUZ-REEL AD-AD74111YRUZ-REEL Datasheet
214Kb / 20P
   Low Cost, Low Power Mono Audio Codec
REV. 0
AD74111 AD-AD74111_15 Datasheet
350Kb / 20P
   Low Cost, Low Power Mono Audio Codec
REV. 0
logo
Suzhou Everest Semicond...
ES8311 EVEREST-ES8311 Datasheet
556Kb / 12P
   Low Power Mono Audio CODEC
ES8312 EVEREST-ES8312 Datasheet
570Kb / 12P
   Low Power Mono Audio CODEC
ES8374 EVEREST-ES8374 Datasheet
696Kb / 11P
   Low Power Mono Audio CODEC
logo
Shenzhen X-Powers Techn...
AC102 XPOWER-AC102 Datasheet
462Kb / 2P
   High Performance and Low Power Mono Audio CODEC
logo
Texas Instruments
TLV320AIC3109-Q1 TI1-TLV320AIC3109-Q1 Datasheet
909Kb / 111P
[Old version datasheet]   Automotive, Low-Power, 96-kHz, Mono Audio Codec
More results


Html Pages

1 2 3 4 5 6 7 8 9 10 11 12 13 14 15 16 17 18 19 20


Arkusz danych Pobierz

Go To PDF Page


Link URL




Polityka prywatności
ALLDATASHEET.PL
Czy Alldatasheet okazała się pomocna?  [ DONATE ] 

O Alldatasheet   |   Reklama   |   Kontakt   |   Polityka prywatności   |   Linki   |   Lista producentów
All Rights Reserved©Alldatasheet.com


Mirror Sites
English : Alldatasheet.com  |   English : Alldatasheet.net  |   Chinese : Alldatasheetcn.com  |   German : Alldatasheetde.com  |   Japanese : Alldatasheet.jp
Russian : Alldatasheetru.com  |   Korean : Alldatasheet.co.kr  |   Spanish : Alldatasheet.es  |   French : Alldatasheet.fr  |   Italian : Alldatasheetit.com
Portuguese : Alldatasheetpt.com  |   Polish : Alldatasheet.pl  |   Vietnamese : Alldatasheet.vn
Indian : Alldatasheet.in  |   Mexican : Alldatasheet.com.mx  |   British : Alldatasheet.co.uk  |   New Zealand : Alldatasheet.co.nz
Family Site : ic2ic.com  |   icmetro.com