MAX114 Maxim, MAX114 Datasheet
MAX114
Manufacturer Part Number
MAX114
Description
+5V / 1Msps / 4 & 8-Channel / 8-Bit ADCs with 1A Power-Down
Manufacturer
Maxim
Datasheet
1.MAX114.pdf
(12 pages)
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The MAX114/MAX118 are microprocessor-compatible,
8-bit, 4-channel and 8-channel analog-to-digital con-
verters (ADCs). They operate from a single +5V supply
and use a half-flash technique to achieve a 660ns con-
version time (1Msps). A power-down (PWRDN) pin
reduces current consumption typically to 1µA. The
devices return from power-down mode to normal oper-
ating 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.
________________________Applications
19-1083; Rev 1; 8/96
For free samples & the latest literature: http://www.maxim-ic.com, or phone 1-800-998-8800
_________________________________________________________Functional Diagram
_______________General Description
High-Speed DSP
Portable Equipment
* MAX118 ONLY
________________________________________________________________ Maxim Integrated Products
*IN7
*IN6
*IN5
IN4
IN3
IN2
IN1
Remote Data Acquisition
Communications Systems
*IN8
A0
ADDRESS
DECODE
MUX
LATCH
A1
8-Bit ADCs with 1µA Power-Down
A2
+5V, 1Msps, 4 & 8-Channel,
REF-
PWRDN
REF+
16
REF+
____________________________Features
Ordering Information continued on last page.
*Dice are specified at T
**Contact factory for availability.
Pin Configurations appear on last page.
MODE
______________Ordering Information
MAX114CNG
MAX114CAG
MAX114C/D
MAX114ENG
MAX114EAG
MAX114MRG
Single +5V Supply Operation
4 (MAX114) or 8 (MAX118) Analog Input Channels
Low Power: 40mW (operating 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)
TIMING AND
4-BIT
DAC
CONTROL
(4LSBs)
FLASH
4-BIT
RD
ADC
PART
(4MSBs)
FLASH
4-BIT
ADC
INT
CS
WR/RDY
5µW (power-down mode)
MAX114/MAX118
TEMP. RANGE
-40°C to +85°C
-40°C to +85°C
-55°C to +125°C
0°C to +70°C
0°C to +70°C
0°C to +70°C
A
= +25°C, DC parameters only.
DRIVERS
OUTPUT
THREE-
STATE
D7
D6
D5
D4
D3
D2
D1
D0
24 Narrow Plastic DIP
24 SSOP
Dice*
24 Narrow Plastic DIP
24 SSOP
24 Narrow CERDIP**
PIN-PACKAGE
1
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