CXA1875

CXA1875AP/AM 8-bit D/A Converter Compatible with I2C Bus Description The CXA1875AP/AM is developed as a 8-bit 5 ch D/A converter compatible with I2C bus. Features • Serial control through I2C bus • 4 built-in general purpose I/O ports (Digital I/O) • I/O can be specified to respective ports independently • Selection of 8 slave addresses possible through address select pins (3 pins) Applications I2C bus can control ICs that do not correspond to I2C bus by connecting the DC control pins of them. Structure Bipolar silicon monolithic IC 16 pin DIP (Plastic) 16 pin SOP (Plastic) Absolute Maximum Ratings (Ta=25°C) • Supply voltage VCC 7 • Operating temperature Topr –20 to +75 • Storage temperature Tstg –65 to +150 • Allowable power dissipation PD 960 Operating Conditions • Supply voltage VCC • Operating temperature Topr V °C °C mW 5±0.5 –20 to +75 V °C Sony reserves the right to change products and specifications without prior notice. This information does not convey any license by any implication or otherwise under any patents or other right. Application circuits shown, if any, are typical examples illustrating the operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits. —1— E94X27-TE CXA1875AP/AM Pin Configuration (Top View) I2C bus VCC 16 SCL 15 SDA 14 Slave address select pin SAD2 13 SAD1 12 SAD0 11 SW I/O SW3 10 SW2 9 1 SW1 2 SW0 3 DAC4 4 DAC3 5 DAC2 6 DAC1 7 DAC0 8 GND SW I/O DAC output Block Diagram SAD2 SAD1 SAD0 Level Conversion SW0-3 Open collector LATCH Level Conversion I2C BUS SDA SCL Level Conversion I2C Decoder Power on Reset LATCH LATCH LATCH LATCH LATCH VCC VCC DAC DAC DAC DAC DAC REG AMP AMP AMP AMP AMP GND DAC4 DAC3 DAC2 DAC1 DAC0 —2— CXA1875AP/AM Pin Description No. 1 2 9 10 14 15 Symbol SW1 SW0 SW2 SW3 SDA SCL Equivalent circuit VCC 150 Description I/O pin for general purpose I/O port VILmax: 1.5 V VIHmin: 3 V VOLmax: 0.4 V SDA I/O pin for I2C bus 4.5k VCC 3 4 5 6 7 DAC4 DAC3 DAC2 DAC1 DAC0 VCC 56 20k 20k 22k D/A converter output pin 8 GND VCC VCC GND pin Slave address input pin Input at positive logic VILmax: 1.5 V VIHmin: 3 V 4.5k 11 12 13 SAD0 SAD1 SAD2 150 16 VCC Power supply pin Electrical Characteristics (Ta=25 °C, VCC=5 V) D/A Converter Block Test No. Item Symbol Test contents circuit 1 Circuit current ICC 1 DAC 0 to 4=127 V(DAC0 to 4=n+1)–V(DAC0 to 4=N) ×128–1 V(DAC0 to 4=191)–V(DAC0 to 4=63) n=0 to 127 DAC 0 to 4=0 DAC 0 to 4=255 Current that can be flowed from Pins 3 to 7 V(–1 mA) –V(1 mA) DAC 0 to 4=127, 2 mA —3— Min. Typ. Max. Unit 6 9 12 mA 2 Differential linearity Minimum output voltage Maximum output voltage Output current Output impedance DLE 1 –1 0 +1 LSB 3 4 5 6 Vmin Vmax Iout Z0 1 1 2 2 0.1 4.3 –1 0 0.4 4.6 0.7 4.9 +1 V V mA Ω 3 6 CXA1875AP/AM SW, SAD Pins No. 7 8 9 10 11 Item Low level input voltage High level input voltage Low level input current High level input current Low level input voltage Symbol VIL VIH IIL IIH VOL Text circuit 3 3 3 3 4 Test contents ST 0 to 3 an input voltage that turns to ‘0’ ST 0 to 3 an input voltage that turns to ‘1’ Input current when 0.4 V is applied Input current when 4.5 V is applied SW 0 to 3=1, Output voltage when 1 mA flows in Min. Typ. Max. Unit — 3.0 –10 –10 0 — — 0 0 0.2 1.5 — +10 +10 0.4 V V µA µA V I2C Bus Block Items (SDA, SCL) No. 12 13 14 15 16 17 18 19 20 21 22 23 24 25 26 27 28 29 Item High level input voltage Low level input voltage High level input current Low level input current Low level output voltage At 3 mA flow to SDA (Pin 14) Maximum flowing current Input capacitance Maximum clock frequency Data change minimum waiting time Data transfer start minimum waiting time Low level clock pulse width High level clock pulse width Minimum start preparation waiting time Minimum data hold time Minimum data preparation time Rise time Fall time Minimum stop preparation waiting time VIH VIL IIH IIL VOL IOL CI fSCL tBUF tHD:STA tLOW tHIGH tSU:STA tHD:DAT tSU:DAT tR tF tSU:STO Symbol Min. Typ. Max. Unit 3.0 0 — — 0 3 — 0 4.7 4.0 4.7 4.0 4.7 5 250 — — 4.7 — — — — — — — — — — — — — — — — — — 5.0 1.5 10 10 0.4 — 10 100 — — — — — — — 1 300 — V V µA µA V mA pF kHz µs µs µs µs µs µs ns µs ns µs I2C bus load conditions: Pull up resistance 4 kΩ (Connected to +5 V) Load capacitance 200 pF (Connected to GND) —4— CXA1875AP/AM I2C Bus Control Signal SDA tBUF SCL tR tF tHD:STA tHD:STA P S tLOW tHD:DAT tHIGH tSU:STA tSU:DAT Sr tSU:STO P Electrical Characteristics Test Circuit Test circuit 1 I2C BUS +5V A 10µ 0.022µ 5V Test circuit 2 I2C BUS +5V A 10µ 0.022µ 16 15 14 13 12 11 10 9 16 15 14 13 12 11 10 9 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 100p 100p 100p 100p 100p 100p 100p 100p 100p 100p V V ±1mA Test circuit 3 I2C BUS +5V 10µ 16 15 14 13 12 11 10 0.022µ A V4 Test circuit 4 I2C BUS +5V 10µ 16 15 14 13 12 11 10 0.022µ 1mA 9 9 V 1 2 3 4 5 6 7 8 1 2 3 4 5 6 7 8 V4= 1.5 V (No. 7) 3.0 V (No. 8) 0.4 V (No. 9) 4.5 V (No. 10) —5— CXA1875AP/AM Definition of I2C Register MSB 0 1 0 0 SAD2 SAD1 SAD0 LSB R/W 0: SLAVE RECEIVER R/W 1: SLAVE TRANSMITTER SAD 0 to 2: 11 to 13 pin 0: "LOW" 1: "HIGH" • With the IC reset all registers are reset to 0 • ∗: Not defined • ×: Don’t care • Sub address is auto incremented • It can be used as a 6-bit D/A converter by setting the lower two bits of DAC 0-4 registors to 0, but take care that the max. voltage of DA output will lower about 100 mV compared with the use of 8 bits. Control Register Sub address × × × × × 000 × × × × × 001 × × × × × 010 × × × × × 011 × × × × × 100 × × × × × 101 Status Register BIT7 PONRES BIT6 0 BIT5 0 BIT4 0 BIT3 ST3 BIT2 ST2 BIT1 ST1 BIT0 ST0 BIT7 REF BIT6 ∗ BIT5 ∗ BIT4 ∗ BIT3 SW3 BIT2 SW2 BIT1 SW1 BIT0 SW0 DAC0 (8) DAC1 (8) DAC2 (8) DAC3 (8) DAC4 (8) —6— CXA1875AP/AM REF (1): In brackets ( ) number of bits Switches D/A converter reference voltage 0:Standardizes the inner regulator 1:Standardizes voltage resistance divided from VCC Selects ON/OFF of Pins 1, 2, 9 and 10 (Each pin is the open collector output of NPN transistor) 0:OFF 1:ON Digital data input register of D/A converter 0:Output voltage turns to minimum 255:Output voltage turns to maximum Detects POWER ON RESET 0:Master passes from the bus and is reset to 0 after having read this status 1:Set to 1 when power supply is turned on or when there has been a power dip Detects and registers the voltage condition of Pins 1, 2, 9 and 10 0:1.5 V and below 1:3.0 V and above Note) SW0 to 3 effective during 0 SW0 to 3 (1): DAC0 to 4 (8): PONRES (1): ST0 to 3 (1): I2C Bus Signal There are 2 signals in I2C bus. SDA (Serial DAta) and SCL (Serial Clock). SDA is double-way. • As SDA is double-way it has 3 state outputs, H, L and HIZ. H L HIZ L • I2C transfer begins with Start Condition and ends with Stop Condition. Start Condition S SDA Stop Condition P SCL —7— CXA1875AP/AM • I2C data write (Write from I2C controller to IC) AT L during write MSB SDA SCL 1 S Address MSB LSB ACK Sub Address ACK 2 3 4 5 6 7 8 9 1 8 9 HIZ MSB LSB HIZ HIZ HIZ 1 8 9 1 8 9 DATA (n) ACK DATA (n+1) ACK DATA (n+2) HIZ HIZ 8 DATA 9 ACK 1 DATA 8 9 P ACK ∗ The number of data that can be transferred at a time is confined to units of 8-bit that can be set as required. Sub Address is incremented automatically. • I2C data read (Read from IC to I2C controller) At H during read SDA HIZ SCL 1 S Address ACK DATA ACK 6 7 8 9 1 7 8 9 P • Read timing MSB IC output SDA LSB SCL 9 1 2 3 4 5 6 7 8 9 Read timing ACK DATA ACK ∗ Data read is performed with SCL rise. —8— CXA1875AP/AM Application Circuit I2C BUS +5V 10µ 0.022µ 10k 10k General purpose output port 16 15 14 13 12 11 10 9 CXA1875AP/AM 1 10k 10k 2SC2785 10k 10k 2 3 4 5 6 7 8 D/A converter output General purpose input port 10k 10k 2SC2785 Slave address for 4 CH and 4 DH Application circuits shown are typical examples illustrating the operation of the devices. Sony cannot assume responsibility for any problems arising out of the use of these circuits or for any infringement of third party patent and other right due to same. —9— CXA1875AP/AM Package Outline CXA1875AP Unit : mm 16PIN DIP (PLASTIC) + 0.1 0.05 0.25 – 0° to 15° EPOXY RESIN SOLDER PLATING COPPER ALLOY 1.0 g 16 9 1 2.54 8 + 0.4 3.7 – 0.1 0.5 MIN 0.5 ± 0.1 1.2 ± 0.15 3.0 MIN PACKAGE STRUCTURE PACKAGE MATERIAL SONY CODE EIAJ CODE JEDEC CODE DIP-16P-01 DIP016-P-0300 Similar to MO-001-AE LEAD TREATMENT LEAD MATERIAL PACKAGE MASS CXA1875AM + 0.4 9.9 – 0.1 16PIN SOP (PLASTIC) 7.62 Two kinds of package surface: 1.All mat surface type. 2.All mirror surface type. + 0.3 6.4 – 0.1 + 0.4 19.2 – 0.1 + 0.4 1.85 – 0.15 16 9 0.15 + 0.2 0.1 – 0.05 + 0.3 5.3 – 0.1 7.9 ± 0.4 0.45 ± 0.1 1.27 + 0.1 0.2 – 0.05 0.24 M PACKAGE STRUCTURE PACKAGE MATERIAL SONY CODE EIAJ CODE JEDEC CODE PACKAGE MASS SOP-16P-L01 SOP016-P-0300 LEAD MATERIAL COPPER ALLOY 0.2g LEAD TREATMENT EPOXY RESIN SOLDER PLATING Purchase of Sony’s I2C components conveys a license under the Philips I2C Patent Rights to use these components in an I2C system, provided that the system conforms to the I2C Standard Specifications as defined by Philips. —10— 0.5 ± 0.2 1 8 6.9