AK5354_04 AKM [Asahi Kasei Microsystems], AK5354_04 Datasheet

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AK5354_04

Manufacturer Part Number
AK5354_04
Description
Low Power 20bit ?? ADC with PGA
Manufacturer
AKM [Asahi Kasei Microsystems]
Datasheet
ASAHI KASEI
The AK5354 is a low voltage 20bit A/D converter for digital audio system. The AK5354 also includes
Analog input PGA, therefore is suitable for microphone application and etc. As digital power supply of the
AK5354 corresponds to 1.8V, the interface with microprocessor can operate at low voltage. Analog signal
input of the AK5354 is single-ended, therefore, any external filters are not required. As the package is
16pin TSSOP, the AK5354 is a suitable for minimizing system.
MS0054-E-02
10. Ta = -40 ∼ 85°C
11. Package : 16pin TSSOP
VCOM
VA
VSS
LIN1
LIN2
RIN1
RIN2
1. Resolution : 20bits
2. Recording Functions
3. ADC Characteristics
4. 3-wire Serial Control I/F
5. Master Clock : 256fs/384fs
6. Audio Data Format : MSB First, 2’s compliment
8. Power Supply
9. Power Supply Current
• 2-Stereo Inputs Selector
• Analog Input PGA
• Monaural Mixing
• Digital HPF for DC-offset cancellation (fc=3.4Hz@fs=44.1kHz)
• Input Level : 1.5Vpp@VA=2.5V (= 0.6 x VA)
• S/(N+D) : 84dB
• DR, S/N : 89dB
• 20bit MSB justified or I
• VA : 2.1 ∼ 3.3V (typ. 2.5V)
• VD : 1.8 ∼ 3.3V (typ. 2.5V)
• IPGA + ADC : 7mA
IPGA
2
S
Low Power 20bit ∆Σ ADC with PGA
FEATURES
FEATURES
Control Register I/F
CSN
- 1 -
ADC
CCLK
CDTI
HPF
Clock Divider
Audio I/F
Controller
MCLK
AK5354
LRCK
BCLK
SDTO
VD
PDN
[AK5354]
2004/12

Related parts for AK5354_04

AK5354_04 Summary of contents

Page 1

ASAHI KASEI The AK5354 is a low voltage 20bit A/D converter for digital audio system. The AK5354 also includes Analog input PGA, therefore is suitable for microphone application and etc. As digital power supply of the AK5354 corresponds to 1.8V, ...

Page 2

ASAHI KASEI Ordering Guide AK5354VT AKD5354 Pin Layout LIN1 RIN1 LIN2 RIN2 VCOM VSS VA VD No. Pin Name I/O Function 1 LIN1 I Lch #1 Input Pin 2 RIN1 I Rch #1 Input Pin 3 LIN2 I Lch #2 ...

Page 3

ASAHI KASEI (VSS=0V; Note 1) Parameter Power Supply Analog Digital Input Current (Any Pin Except Supplies) Analog Input Voltage (LIN2-1, RIN2-1 pins) Digital Input Voltage Ambient Temperature (power applied) Storage Temperature Note: 1. All voltages with respect to ground. WARNING: ...

Page 4

ASAHI KASEI (Ta=25°C; VA, VD=2.5V; fs=44.1kHz; Signal Frequency=1kHz; Measurement frequency=10Hz ∼ 20kHz; unless otherwise specified) Parameter Resolution Input PGA Characteristics (IPGA): Input Voltage (LIN1, LIN2, RIN1, RIN2) (Note 2) Input Impedance +28dB ∼ -8dB Step Width -8dB ∼ -16dB -16dB ...

Page 5

ASAHI KASEI (Ta=25°C; VA=2.1 ∼ 3.3V, VD=1.8 ∼ 3.3; 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): ...

Page 6

ASAHI KASEI (Ta=25°C; VA=2.1 ∼ 3.3V, VD=1.8 ∼ 3.3V; C Parameter Control Clock Frequency Master Clock (MCLK) 256fs: Frequency Pulse Width Low Pulse Width High 384fs: Frequency Pulse Width Low Pulse Width High Channel Clock (LRCK) Frequency Duty Cycle Audio ...

Page 7

ASAHI KASEI Timing Diagram MCLK LRCK BCLK LRCK BCLK SDTO Figure 2. Audio Data Input/Output Timing (Audio I/F = No.0) CSN tCSS CCLK CDTI MS0054-E-02 1/fCLK tCLKH tCLKL 1/fs tBLK tBLKH tBLKL Figure 1. Clock Timing tBLR tDLR D20 (MSB) ...

Page 8

ASAHI KASEI CSN CCLK CDTI D4 PDN SDTO MS0054-E- Figure 4. WRITE Data Input Timing tPW tPWV Figure 5. Reset Timing - 8 - [AK5354] tCSW VIH VIL tCSH VIH VIL VIH D7 VIL VIL 50%VD 2004/12 ...

Page 9

ASAHI KASEI System Clock The clocks that are required to operate are MCLK (256fs/384fs), LRCK (fs) and BCLK (40fs∼). The master clock (MCLK) should be synchronized with LRCK but the phase is free of care. The frequency of MCLK can ...

Page 10

ASAHI KASEI System Reset & Offset Calibration The AK5354 should be reset once by bringing PDN pin “L” after power-up. The control register values are initialized by PDN “L”. Offset calibration starts by PDN pin “L” to “H”. It takes ...

Page 11

ASAHI KASEI Timing of Control Register The internal registers are written by the 3-wire µP interface pins: CSN, CCLK, CDTI. These data are included by Op-code (3bit), Address (LSB-first, 5bit) and Control data (LSB-first, 8bit). A side of transmitted data ...

Page 12

ASAHI KASEI Register Definition Input Select Addr Register Name 00H Input Select RESET HPF: Select ON/OFF of the digital HPF. (0: ON, 1: OFF) LIN2-1: Select ON/OFF of Lch input. (0: OFF, 1: ON) RIN2-1: Select ON/OFF of Rch input. ...

Page 13

ASAHI KASEI Mode Control 2 Addr Register Name 02H Mode Control 2 MONO1 RESET MONO1-0: Monaural Mixing 00: Stereo (RESET) 01: (L+R)/2 10: LL 11: RR ADC Lch HPF ADC Rch HPF Mode Stereo Recording Monaural Recording Stereo Input Monaural ...

Page 14

ASAHI KASEI Input Analog PGA Control Addr Register Name 03H Input Analog PGA Control RESET ZEIP: Select IPGA zero crossing operation (0: Disable, 1: Enable) Writing to IPGA value at ZEIP = “1”, IPGA value of L/R channels changes by ...

Page 15

ASAHI KASEI • About zero crossing operation Comparator for zero crossing detection in the AK5354 has offset. Therefore possible that IPGA value is changed by zero crossing timeout as zero crossing detection does not occur by a ...

Page 16

ASAHI KASEI Figure 12 shows the system connection diagram. An evaluation board [AKD5354] is available which demonstrates application circuit, optimum layout, power supply arrangements and measurement results. 2.2u + 10u 2.1 ~ 3.3V Analog Supply + 1.8 ~ 3.3V Digital ...

Page 17

ASAHI KASEI 1. Grounding and Power Supply Decoupling The AK5354 requires careful attention to power supply and grounding arrangements usually supplied from analog supply in system power supply pin to interface with the external ICs ...

Page 18

ASAHI KASEI 16pin TSSOP (Unit: mm) 5 0.22±0.1 Seating Plane Package & Lead frame material Package molding compound: Lead frame material: Lead frame surface treatment: MS0054-E-02 PACKAGE 0.65 Detail A 0.10 Epoxy Cu Solder plate ...

Page 19

ASAHI KASEI • 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) sales office or authorized distributor concerning their current status. • AKM assumes ...

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