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MAX114：+5V, 1Msps, 4 and 8-Channel, 8-Bit ADCs with 1µA Power-Down

Low-Power +5V 8-bit ADCs with Parallel Interface

The MAX114/MAX118 are microprocessor-compatible, 8-bit, 4-channel and 8-channel analog-to-digital converters (ADCs). They operate from a single +5V supply and use a half-flash technique to achieve a 660ns conversion time (1Msps). A power-down (active-low PWRDN) pin reduces current consumption typically to 1µA. The devices return from power-down mode to normal operating mode in less than 200ns, allowing large supply-current reductions in Burst Mode® applications (in Burst Mode, the ADC wakes up from a low-power state at specified intervals to sample the analog input signals). Both converters include a track/hold, enabling the ADC to digitize fast analog signals. Microprocessor (µP) interfaces are simplified because the ADC can appear as a memory location or I/O port without external interface logic. The data outputs use latched, three-state buffer circuitry for direct connection to an 8-bit parallel µP data bus or system input port. The MAX114/MAX118 input/reference configuration enables ratiometric operation. The 4-channel MAX114 is available in a 24-pin DIP or SSOP. The 8-channel MAX118 is available in a 28-pin DIP or SSOP. For +3V applications, refer to the MAX113/MAX117 data sheet.

Key Features Single +5V Supply Operation 4 (MAX114) or 8 (MAX118) Analog Input Channels Low Power: 40mW (operating mode) 5µW (power-down mode) Total Unadjusted Error <1LSB Fast Conversion Time: 660ns per Channel No External Clock Required Internal Track/Hold 1MHz Full-Power Bandwidth Internally Connected 8th Channel Monitors Reference Voltage (MAX118)

MAX114, MAX118: Functional Diagram Applications/Uses Communication Systems High-Speed DSP Portable Equipment Remote Data Acquisition

DataSheet

Parametrics

Quality and Environmental Data

• MAX114.pdf

Related Products

• MAX11120：1Msps, Low-Power, Serial 12-/10-/8-Bit, 4-/8-/16-Channel ADCs
• MAX11115：2Msps/3Msps, Low-Power, Serial 12-/10-/8-Bit ADCs
• MAX1112：+5V, Low-Power, Multichannel, Serial 8-Bit ADCs
• MAX1113：+5V, Low-Power, Multichannel, Serial 8-Bit ADCs
• MAX117：+3V, 400ksps, 4/8 Channel, 8-Bit ADCs with 1µA Power Down
• MAX113：+3V, 400ksps, 4/8 Channel, 8-Bit ADCs with 1µA Power Down

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