x9438 Intersil Corporation, x9438 Datasheet
x9438
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x9438 Summary of contents
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... March 11, 2005 DESCRIPTION The X9438 is a monolithic CMOS IC that incorporates two operational amplifiers and two nonvolatile digitally controlled potentiometers. The amplifiers are CMOS differential input voltage operational amplifiers with near rail-to-rail outputs. All pins for the two amplifiers are brought out of the package to allow combining them with the potentiometers, or using them as com- plete stand-alone amplifiers ...
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... The address inputs are used to set the least significant 4 bits of the 8-bit slave address. A match in the slave address serial data stream must be made with the address input in order to initiate communication with the X9438. A maximum of 16 devices may share the same 2-wire serial bus. (1) Potentiometer Pins ...
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... Following a start condition the master must output the address of the slave it is accessing. The most signifi- cant four bits of the slave address are the device type identifier (refer to Figure 1). For the X9438 this is fixed as 0101[B]. Figure 1. Address/Identification Byte Format Device Type ...
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... Four instructions require a three-byte sequence to complete. The basic sequence is illustrated in Figure 4. These instructions transfer data between the host and the X9438; either between the host and one of the data registers or directly between the host and the Issue STOP wiper counter and analog control registers. These ...
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... T The Increment/Decrement command is different from the other commands. Once the command is issued and the X9438 has responded with an acknowledge, the master can clock the selected wiper up and/or down in one segment steps; thereby, providing a fine tuning capability to the host. For each SCL clock pulse Figure 5 ...
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... Definitions: SACK - Slave acknowledge, MACK - Master acknowledge, I/D - Increment/Decrement (1/0 Register Potentiometer 6 X9438 . 0 WCR register data S opcode addresses (sent by slave on SDA P0 WCR0 WCR1 . 0 WCR register data ...
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... Enable Increment/decrement of the WCR pointed device type device S T identifier addresses X9438 - R to the WCR pointed instruction WCR/ opcode addresses ...
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... X9438 The wiper counter register is a volatile register; that is, its contents are lost when the X9438 is powered-down. Although the registers are automatically loaded with the value in R0 upon power-up, it should be noted this may be different from the value present at power-down. ...
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... Max. Device ° C +70 X9438 ° C +85 X9438-2.7 Limits Min. Typ. Max. -20 + 100 100 250 X9438 +4.5 +5.5 X9438-2.7 +2.7 +5.5 X9438 -5.5 -4.5 X9438-2.7 -5.5 -2.7 pin V- V+ -100 1 -0.2 +0.2 r300 TOTAL ±20 Supply Voltage (V ) Limits CC 5V r10% 2.7V to 5.5V Unit Test Conditions % mW 25qC, each pot ...
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... Input leakage current LI I Output leakage current LO V Input HIGH voltage IH V Input LOW voltage IL V Output LOW voltage OL 10 X9438 Industrial Condition Min. Typ. Max. Min. Typ. Max. V+/V- r3V to r5V V+/V- r3V to r5V -10 V+/V- r3V to r5V V+/V- r3V to r5V V = - V+/V- r3V to r5V 25° ...
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... Input pulse levels V Input rise and fall times 10ns Input and output timing level V Note: (1) Applicable to recall and power consumption applications EQUIVALENT A.C. LOAD CIRCUIT 5V 1533: SDA Output 100pF 11 X9438 Min. 100,000 100 Test 0.5 CC SPICE Macro Model 2.7V 100pF ...
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... TIMING DIAGRAMS START and STOP Timing (START) SCL t SU:STA SDA Input Timing t CYC SCL SDA t SU:DAT Output Timing SCL SDA DCP Timing (for All Load Instructions) SCL SDA VWx 12 X9438 HD:STA HIGH t AA LSB t WRL (STOP) SU:STO t ...
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... DCP Timing (for Increment/Decrement Instruction) SCL SDA Wiper Register Address VWx Write Protect and Device Address Pins Timing SCL SDA WP A0 X9438 Inc/Dec (START) (STOP) ... (Any Instruction) ... ... t t SU:WPA HD:WPA Inc/Dec t WRID March 11, 2005 FN8199.0 ...
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... High-voltage write cycle time (store instructions) WR DCP TIMING Symbol t Wiper response time after instruction issued (All load instructions) WRL V RAMP (sample tester) CC Symbol trV V Power-up rate X9438 Parameter Parameter Parameter Parameter Min. Max. Unit 400 kHz 2500 ns 600 ns 1300 ns 600 ...
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... R 1 – Absolute Value Amplifier with Gain – – X9438 – Function Generator frequency amplitude ...
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... PACKAGING INFORMATION 24-Lead Plastic Small Outline Gull Wing Package Type S Pin 1 Index Pin 1 (4X) 7° 0.050 (1.27) 0.010 (0.25) 0.020 (0.50) 0° - 8° 0.015 (0.40) 0.050 (1.27) NOTE: ALL DIMENSIONS IN INCHES (IN PARENTHESES IN MILLIMETERS) 16 X9438 0.014 (0.35) 0.020 (0.50) 0.598 (15.20) 0.610 (15.49) X 45° 0.009 (0.22) 0.420" 0.013 (0.33) FOOTPRINT 0.393 (10.00) 0.290 (7.37) 0.299 (7.60) ...
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... BSC .303 (7.70) .311 (7.90) .0075 (.19) .0118 (.30 8° .020 (.50) .030 (.75) Detail A (20X) See Detail “A” NOTE: ALL DIMENSIONS IN INCHES (IN PARENTHESES IN MILLIMETERS) 17 X9438 24-Lead Plastic, TSSOP Package Type V .169 (4.3) .252 (6.4) BSC .177 (4.5) .047 (1.20) .002 (.06) .005 (.15) .010 (.25) Gage Plane Seating Plane (1.78) (0.42) ...
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... However, no responsibility is assumed by Intersil or its subsidiaries for its use; nor for any infringements of patents or other rights of third parties which may result from its use. No license is granted by implication or otherwise under any patent or patent rights of Intersil or its subsidiaries. For information regarding Intersil Corporation and its products, see www.intersil.com 18 X9438 ...