AK5355VN AKM [Asahi Kasei Microsystems], AK5355VN Datasheet

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AK5355VN

Manufacturer Part Number
AK5355VN
Description
Low Power 16bit ?? ADC
Manufacturer
AKM [Asahi Kasei Microsystems]
Datasheet
ASAHI KASEI
The AK5355 is a low voltage 16bit A/D converter for digital audio systems. The AK5355 also includes an
Input Gain Amplifier, making it suitable for microphone applications or low-input signal levels. The analog
signal input of the AK5355 is single-ended, eliminating the need for external filters. The AK5355 is housed
in a space-saving 16pin TSSOP or 20pin QFN package.
MS0113-E-01
10. Ta = -40 ∼ 85°C
11. Package: 16pin TSSOP
1. Resolution: 16bits
2. Recording Functions
3. ADC Characteristics
4. Master Clock: 256fs/384fs/512fs
5. Audio Data Format: MSB First, 2’s compliment
8. Power Supply
9. Power Supply Current: 5mA
VCOM
VA
VSS
RIN
LIN
• 16bit MSB justified or I
• VA, VD: 2.1 ∼ 3.6V (typ. 3.0V)
• Gain Amplifier (0dB / +15dB)
• Digital HPF for DC-offset cancellation (fc=3.4Hz@fs=44.1kHz)
• Single-ended Input
• Input Level: 1.8Vpp@VA=3.0V (= 0.6 x VA)
• S/(N+D): 85dB
• DR, S/N: 91dB
20pin QFN (4.2mm x 4.2mm, 0.5mm pitch)
SEL
2
S
FEATURES
FEATURES
- 1 -
ADC
Low Power 16bit ∆Σ ADC
HPF
Clock Divider
Audio I/F
Controller
MCLK
DIF
AK5355
LRCK
BCLK
SDTO
VD
PDN
[AK5355]
2005/01

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AK5355VN Summary of contents

Page 1

ASAHI KASEI The AK5355 is a low voltage 16bit A/D converter for digital audio systems. The AK5355 also includes an Input Gain Amplifier, making it suitable for microphone applications or low-input signal levels. The analog signal input of the AK5355 ...

Page 2

... Ordering Guide -40 ∼ +85°C AK5355VT -40 ∼ +85°C AK5355VN AKD5355 Evaluation Board for AK5355VT Pin Layout (AK5355VT) VCOM RIN LIN VSS VA VD SEL NC Pin Layout (AK5355VN) NC TST1 NC NC VCOM MS0113-E-01 16pin TSSOP (0.65mm pitch) 20pin QFN (0.5mm pitch ...

Page 3

ASAHI KASEI No. Pin Name I/O Function 1 VCOM O ADC Common Voltage Output Pin 2 RIN I Rch Input Pin 3 LIN I Lch Input Pin 4 VSS - Ground Pin Analog Power Supply Pin, +3.0V ...

Page 4

... VCOM O ADC Common Voltage Output Pin Note: All digital input pins should not be left floating. MS0113-E-01 PIN/FUNCTION (AK5355VN) “L”: 0dB, “H”: +15dB This pin should be left floating. This pin should be left floating. This pin should be left floating. “L”: Reset & Power down, “H”: Normal operation 2 “ ...

Page 5

ASAHI KASEI (VSS=0V; Note 1) Parameter Power Supply Analog Digital Input Current (Any Pin Except Supplies) Analog Input Voltage (LIN, RIN pins) Digital Input Voltage Ambient Temperature (power applied) Storage Temperature Note 1. All voltages with respect to ground. WARNING: ...

Page 6

... Gain = +15dB 0.29 Gain = 0dB 27 Gain = +15dB 20 Gain = 0dB 75 Gain = +15dB 70 Gain = 0dB 84 Gain = +15dB 76 Gain = 0dB 84 Gain = +15dB 76 Gain = 0dB 90 Gain = +15dB 80 Gain = 0dB Gain = +15dB AK5355VT AK5355VN - 6 - [AK5355] typ max Units 16 bits 1.8 1.95 Vpp 0.32 0.35 Vpp 40 kΩ 30 kΩ ...

Page 7

ASAHI KASEI (Ta=25°C; VA, VD=2.1 ∼ 3.6V; fs=44.1kHz) Parameter ADC Digital Filter (Decimation LPF): ±0.1dB Passband (Note 5) -1.0dB -3.0dB Stopband (Note 5) Passband Ripple Stopband Attenuation Group Delay (Note 6) Group Delay Distortion ADC Digital Filter (HPF): Frequency Response ...

Page 8

ASAHI KASEI (Ta=25°C; VA, VD=2.1 ∼ 3.6V; C =20pF) L Parameter Control Clock Frequency Master Clock (MCLK) 256fs: Frequency Pulse Width Low Pulse Width High 384fs: Frequency Pulse Width Low Pulse Width High 512fs: Frequency Pulse Width Low Pulse Width ...

Page 9

ASAHI KASEI Timing Diagram MCLK LRCK BCLK LRCK BCLK SDTO Figure 2. Audio Data Input/Output Timing (Audio I/F = No.0) PDN SDTO MS0113-E-01 1/fCLK tCLKH tCLKL 1/fs tBLK tBLKH tBLKL Figure 1. Clock Timing tBLR tDLR tDSS D15 (MSB) tPW ...

Page 10

ASAHI KASEI System Clock The clocks required to operate are MCLK (256fs/384fs/512fs), LRCK (fs) and BCLK (32fs∼). The master clock (MCLK) should be synchronized with LRCK. The phase between these clocks does not matter. The frequency of MCLK can be ...

Page 11

ASAHI KASEI Digital High Pass Filter The AK5355 has a Digital High Pass Filter (HPF) to cancel DC-offset in both the ADC and input gain amplifier. The cut-off frequency of the HPF is 3.4Hz at fs=44.1kHz. This cut-off frequency scales ...

Page 12

ASAHI KASEI Figure 7 shows the system connection diagram. An evaluation board [AKD5355] is available which demonstrates the application circuit, optimum layout, power supply arrangements and measurement results. + Rch In + Lch In Analog Supply 10µ 2.1 ∼ 3.6V ...

Page 13

... Figure 8 shows the system connection diagram. An evaluation board [AKD5355] is available which demonstrates the application circuit, optimum layout, power supply arrangements and measurement results. + Rch In + Lch In Analog Supply 10µ + 2.1 ∼ 3.6V Digital Supply + 2.1 ∼ 3.6V 10µ 0.1µ Figure 8. System Connection Diagram Example (AK5355VN) MS0113-E-01 SYSTEM DESIGN (AK5355VN) + 2.2µ 0.1µ 1 RIN LIN 2 VSS 3 Top View 0.1µ 4 ...

Page 14

ASAHI KASEI MIC Device Connection Example Figure 9 and Figure 10 show the connection example of MIC Device. In this case, a mono microphone is connected to LIN pin the AK5355. Unused RIN pin can be open. The power supply ...

Page 15

... ASAHI KASEI 0.1µ MIC 2.2k + 2.2k 10µ Analog Supply 0.1µ 10µ + 2.1 ∼ 3.6V Digital Supply + 2.1 ∼ 3.6V 10µ 0.1µ Figure 10. MIC Device Connection Example (AK5355VN) MS0113-E-01 + 2.2µ 0.1µ 1 RIN DIF LIN PDN 2 VSS BCLK 3 Top View VA MCLK LRCK Analog Ground - 15 - [AK5355] Mode Setting 15 Reset ...

Page 16

ASAHI KASEI 1. Grounding and Power Supply Decoupling The AK5355 requires careful attention to power supply and grounding arrangements usually supplied from the analog supply in the system power supply pin to interface with the ...

Page 17

ASAHI KASEI 16pin TSSOP (Unit: mm) *5.0±0 0.22 ± 0.1 0.13 M Seating Plane NOTE: Dimension "*" does not include mold flash. Package & Lead frame material Package molding compound: Lead frame material: Lead frame surface treatment: MS0113-E-01 ...

Page 18

... ASAHI KASEI 20pin QFN (Unit: mm) 4.20 ± 0.10 4.00 ± 0.05 C0.7 0.22 ± 0.05 0.05 0.60 ± 0.10 Note: The black parts of back package should be open. Package & Lead frame material Package molding compound: Lead frame material: Lead frame surface treatment: MS0113-E-01 PACKAGE (AK5355VN C0.2 B 45.0° 0.50 1. 0.05 S Epoxy Cu Solder (Pb free) plate ...

Page 19

ASAHI KASEI MS0113-E-01 MARKING (AK5355VT) AKM 5355VT XXYYY 1) Pin #1 indication 2) Date Code : XXYYY (5 digits Lot# YYY : Date Code 3) Marketing Code : 5355VT 4) Asahi Kasei Logo - 19 - [AK5355] 2005/01 ...

Page 20

ASAHI KASEI Date (YY/MM/DD) Revision Reason 01/08/27 00 First Edition 05/01/20 01 Spec addition • These products and their specifications are subject to change without notice. Before considering any use or application, consult the Asahi Kasei Microsystems Co., Ltd. (AKM) ...

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