Renesas X9448WV24-2.7

Overview

X9448WV24-2.7 from Intersil is a mixed-signal dual digitally controlled potentiometer (XDCP™) with integrated voltage comparators, operating from 2.7V to 5.5V analog supplies (V+/V−) and 2.7V–5.5V system supply (VCC). It features two 64-tap, 10kΩ resistor arrays, two fast-response comparators (200 ns), hardware write protection (WP), and 16 bytes of EEPROM for nonvolatile storage of wiper positions and control settings. It is used in programmable level detection, window comparators, and oscillator timing circuits requiring memory retention.

For engineers reviewing the X9448WV24-2.7 datasheet, X9448WV24-2.7 pinout, X9448WV24-2.7 application, or X9448WV24-2.7 equivalent, this page delivers verified specifications, validated pin functions, confirmed 24-lead TSSOP package mapping, real-world comparator use cases, and two technically documented alternative parts - all derived exclusively from Intersil FN8201 Rev 0.00.

Technical Context

The X9448WV24-2.7 implements two independent CMOS resistor arrays (63 segments each, 64 tap points), each paired with a rail-to-rail comparator that compares external VNI against wiper voltage VW. Wiper position is controlled via volatile WCR registers (6-bit), while comparator behavior (enable/latch/shutdown) is set by 3-bit ACR registers.

Communication uses a standard 2-wire I²C-compatible interface (SCL/SDA) with 4-bit device addressing (A0–A3), supporting up to 16 devices on one bus. Nonvolatile writes to WCR/ACR occur only when WP = HIGH, with 5–10 ms internal EEPROM programming time and guaranteed 100,000 write cycles per register bit.

Key Specifications

Pinout & Package

Package: 24-lead TSSOP (Type V), 4.3 mm × 7.7 mm body, 0.65 mm pitch, gull-wing leads. Pin 1 index located at top-left corner (see Intersil FN8201 p.18).

Key Features

Applications

Equivalent & Alternatives

The following parts are listed as comparable options for similar digitally controlled potentiometer with comparator applications.

Compared with X9448WV24-2.7, X9418 reduces channel count and memory depth for cost-sensitive single-threshold designs, while X9445 trades bipolar analog flexibility for lower on-resistance and simpler supply architecture - neither offers identical 10kΩ dual-channel + ±V operation with full EEPROM register set.

Availability

X9448WV24-2.7 is available at Aetrix Electronics and suitable for industrial sensor interfaces, programmable power supply monitors, embedded test equipment, and medical instrumentation requiring stable component supply and long-term calibration retention.

Supply support for X9448WV24-2.7 includes scheduled delivery planning, volume procurement assistance, BOM continuity management, traceable sourcing, and lifecycle availability coordination for OEM customers, industrial embedded developers, connected-device designers, and electronics production programs.

Manufacturer

Intersil (now part of Renesas Electronics) is a semiconductor manufacturer specializing in precision analog, power management, and interface ICs for industrial, aerospace, and communications markets.

The X9448 product line delivers nonvolatile digital potentiometers with integrated signal-conditioning functions, designed specifically for applications needing memory-retentive analog adjustment and comparator decision logic in a single package.

FAQ

What is the supply voltage range for X9448WV24-2.7?

X9448WV24-2.7 supports VCC = 2.7V to 5.5V for digital operation, and independent analog supplies V+ and V− ranging from ±2.7V to ±5.5V. This allows true bipolar signal handling - for example, V+ = +5V and V− = −5V - while maintaining compatibility with 2.7V microcontrollers. The "-2.7" suffix confirms guaranteed operation down to 2.7V VCC.

Does X9448WV24-2.7 require external pull-up resistors on SCL and SDA?

Yes, X9448WV24-2.7 requires external pull-up resistors on both SCL and SDA lines because its SDA pin is open-drain and SCL is input-only. Per Intersil FN8201, typical values depend on bus capacitance and speed; for 400 kHz operation with ≤400 pF total bus capacitance, 2.2 kΩ to 4.7 kΩ pull-ups to VCC are recommended.

How many nonvolatile wiper positions can X9448WV24-2.7 store per potentiometer?

X9448WV24-2.7 stores up to four independent wiper positions per potentiometer in its nonvolatile data registers R0–R3. Each register holds a 6-bit value (0–63) corresponding to a tap position. These can be loaded into the volatile WCR on demand, enabling rapid switching between calibrated settings without reprogramming.

Can X9448WV24-2.7 operate with a single 5V supply?

No - X9448WV24-2.7 requires separate analog (V+/V−) and digital (VCC/VSS) supplies. While VCC may be 5V, V+ and V− must be configured as a bipolar pair (e.g., +5V/−5V or +3.3V/−3.3V) or as asymmetric rails (e.g., +5V/0V, but then V− = 0V limits comparator input range). Single-supply operation is not supported per the absolute maximum ratings and recommended conditions in FN8201.

What is the function of the WP pin on X9448WV24-2.7?

The WP (Write Protect) pin on X9448WV24-2.7 disables all nonvolatile writes to the wiper counter registers (WCR) and analog control registers (ACR) when held LOW. This prevents accidental EEPROM corruption during normal operation or firmware updates. Writes to volatile registers (e.g., direct WCR load) remain enabled regardless of WP state.