CS70P STMicroelectronics

CS70 High side current sense high voltage op amp Datasheet - production data Pin selectable gain: 20 V/V, 25 V/V, 50 V/V or 100 V/V Buffered output Applications TSSOP8 Wireless battery chargers (Plastic package) Chargers for portable equipment Precision current sources Vm Vp 1 8 Wearable SEL1 Vcc- 2 7 Description SEL2 Gnd 3 6 The CS70 measures a small differential voltage on a high-side shunt resistor and translates it into Out Vcc+ 4 5 a ground-referenced output voltage. The gain is adjustable to four different values from 20 V/V up to 100 V/V by two selection pins. Pin connections (top view) Wide input common-mode voltage range, low quiescent current, and tiny TSSOP8 packaging enable use in a wide variety of applications. Features The input common-mode and power-supply Independent supply and input common-mode voltages are independent. The common-mode voltages voltage can range from 2.9 V to 70 V in the single- Wide common-mode operating range: 2.9 V to supply configuration or be offset by an adjustable 70 V in single-supply configuration, -2.1 V to voltage supplied on the Vcc- pin in the dual- 65 V in dual-supply configuration supply configuration. Wide common-mode surviving range: -16 V to With a current consumption lower than 360 A 75 V (reversed battery and load-dump and a virtually null input leakage current in conditions) standby mode, the power consumption in the applications is minimized. Supply voltage range: 2.7 to 5.5 V in single- supply configuration Low current consumption: I max = 360 A CC Table 1. Device summary Part number Temperature range Package Packaging Marking CS70P - 40 C to +125 C TSSOP8 Tape and reel 103I March 2014 DocID026041 Rev 1 1/24 This is information on a product in full production. www.st.comContents CS70 Contents 1 Application schematic and pin description 3 2 Absolute maximum ratings and operating conditions . 6 3 Electrical characteristics . 7 4 Electrical characteristics curves: current sense amplifier . 10 5 Parameter definitions . 13 5.1 Common-mode rejection ratio (CMR) . 13 5.2 Supply voltage rejection ratio (SVR) 13 5.3 Gain (Av) and input offset voltage (V ) 13 os 5.4 Output voltage drift versus temperature 15 5.5 Input offset drift versus temperature . 16 5.6 Output voltage accuracy 16 6 Maximum permissible voltages on pins 18 7 Application information . 19 8 Package information 21 8.1 TSSOP8 package information . 22 9 Revision history . 23 2/24 DocID026041 Rev 1