SNAP01

SNAP01 Class AB Power Amplifier ============== CONTENTS ============== 1. 2. 3. 4. 5. GENERAL DESCRIPTION ....................................................................................... 3 FEATURES ................................................................................................................. 3 BLOCK DIAGRAM ................................................................................................... 3 PIN ASSIGNMENT .................................................................................................... 4 ELECTRICAL CHARACTERISTICS ...................................................................... 4 5.1. 5.2. 6. ABSOLUTE MAXIMUM RATINGS .............................................................................. 4 DC CHARACTERISTICS (TA=25℃).......................................................................... 5 APPLICATION CIRCUIT ......................................................................................... 6 6.1. 6.2. 6.3. 6.4. 6.5. 6.6. CURRENT DAC APPLICATION WITH SINGLE-END MODE .......................................... 6 PWM WITH DIFFERENTIAL MODE ........................................................................... 7 PUSH-PULL DAC WITH SINGLE-END MODE ............................................................ 8 PUSH-PULL DAC WITH DIFFERENTIAL MODE .......................................................... 9 SINGLE-END WITH MIXED............................................................................... 10 DIFFERENTIAL MODE WITH MIXED ....................................................................... 11 7. PACKAGE/PAD LOCATIONS ............................................................................... 12 7.1. 7.2. 7.3. SNAP01H (DICE) ................................................................................................ 12 SNAP01PG (DIP GREEN PACKAGE)..................................................................... 13 SNAP01SG (SOP GREEN PACKAGE).................................................................... 14 Ver1.3 1 November 22, 2007 SNAP01 Class AB Power Amplifier AMENDENT HISTORY VERSION V1.0 V1.1 V1.2 V1.3 DATE September 27, 2007 October 9, 2007 November 2, 2007 November 22, 2007 DESCRIPITION First issue Advise Application Circuit Revise Package information. 1. Revise Operation current. 2. Revise package information. Ver1.3 2 November 22, 2007 SNAP01 Class AB Power Amplifier 1. General Description The SNAP01 is an integrated class AB mono speaker driver. The SNAP01 consist of single power supply, no switch-on/off click, high SNR ratio, power control, single-end/differential input mode and support Gain adjusted by external resistor. 2. Features w w w w w w w w w w w Operation voltage：2.4V-5.5V. High signal-to-noise ratio. Low distortion. High slew rate. No switch On/Off click. Power off control. Gain adjustment. Large output voltage swing. Direct driver speaker. Support single-end and differential mode. Low standby current：1.0μA. 3. Block Diagram 75K VIN VM 5K 5K + OPA 75K 8K 8K Vbias + OPB O- VREF O+ CE Enable VDD Clickless/Depop CKT Power CKT GND Ver1.3 3 November 22, 2007 SNAP01 Class AB Power Amplifier 4. Pin Assignment Pin No. 1 2 3 4 5 6 7 8 Symbol VM VIN GND VREF CE O+ VDD O- I/O I I I O I O I O Function Description Signal Input Positive Signal Input Negative Negative Power Supply Voltage Reference Chip Enable, High Active Positive Output Positive Power Supply Negative Output 5. Electrical Characteristics 5.1. Absolute Maximum Ratings Characteristic Supply Voltage Operating Temperature Storage Temperature Symbol VDD TOG TSTG Min -0.3 0 -55 Max 6.0 55 125 Unit V ℃ ℃ Ver1.3 4 November 22, 2007 SNAP01 Class AB Power Amplifier 5.2. DC Characteristics (Ta=25℃) Parameter Supply Power Standby Current Symbol VDD ISTB Min 2.4 Operating Current IOP Chip Enable Reference Voltage Output Current Signal to Noise Ratio The Harmonic Distortion + Noise CE VREF Io SNR THD+N 0.5 Output Power POUT 0.7 Enable Time TON 0.75 16 32 15 Gain 30 W ms ms 0.58 1 % W VDD/3 VDD/2 180 360 57 72 1 16 mA V V mA mA dB dB % Typical Max 5.5 1 12 Unit V μA mA Condition CE=Low VDD=3.0V, CE=High, No load & VIN and VM is floating. VDD=4.5V CE=High, No load & VIN and VM is floating. VCE>2/3VDD = High VCE