MAX152 Datasheet, PDF (1/12 Pages) Maxim Integrated Products – +3V, 8-Bit ADC with 1uA Power-Down

19-0119; Rev. 1; 12/93
+3V, ^{EvFaolullaotwiosnDKaittaMSahneueatl} 8-Bit ADC with 1µA Power-Down
_______________General Description
The MAX152 high-speed, microprocessor (µP)-com-
patible, 8-bit analog-to-digital converter (ADC) uses a
half-flash technique to achieve a 1.8µs conversion
time, and digitizes at a rate of 400k samples per sec-
ond (ksps). It operates with single +3V or dual ±3V
sAu–pP—pO—liWe—sE—Ra—nD—dO—aWc—Nc–eppitns
either unipolar or bipolar inputs.
reduces current consumption to
a typical value of 1µA. The part returns from power-
down and acquires an input signal in less than 900ns,
providing large reductions in supply current in applica-
tions with burst-mode input signals.
The MAX152 is DC and dynamically tested. Its µP inter-
face appears as a memory location or input/output port that
requires no external interface logic. The data outputs use
latched, three-state buffered circuitry for direct connection
to a µP data bus or system input port. The ADC's input/ref-
erence arrangement enables ratiometric operation. A fully-
assembled evaluation kit provides a proven PC board lay-
out to speed prototyping and design.
_______________________Applications
Cellular Telephones
Portable Radios
Battery-Powered Systems
Burst-Mode Data Acquisition
Digital Signal Processing
Telecommunications
High-Speed Servo Loops
________________Functional Diagram
___________________________Features
o Single +3.0V to +3.6V Supply
o 1.8µs Conversion Time
o Power-Up in 900ns
o Internal Track/Hold
o 400ksps Throughput
o Low Power: 1.5mA (Operating Mode)
1µA (Power-Down Mode)
o 300kHz Full-Power Bandwidth
o 20-Pin DIP, SO and SSOP Packages
o No External Clock Required
o Unipolar/Bipolar Inputs
o Ratiometric Reference Inputs
o 2.7V Version Available – Contact Factory
______________Ordering Information
PART
TEMP. RANGE
PIN-PACKAGE
MAX152CPP
0°C to +70°C
20 Plastic DIP
MAX152CWP
0°C to +70°C
20 Wide SO
MAX152CAP
0°C to +70°C
20 SSOP
MAX152C/D
0°C to +70°C
Dice*
MAX152EPP
-40°C to +85°C
20 Plastic DIP
MAX152EWP
-40°C to +85°C
20 Wide SO
MAX152EAP
-40°C to +85°C
20 SSOP
MAX152MJP
-55°C to +125°C 20 CERDIP**
* Contact factory for dice specifications.
** Contact factory for availability and processing to MIL-STD-883.
__________________Pin Configuration
VREF+12
VREF- ¹¹
VIN ¹
4-BIT
FLASH
ADC
VDD ₂₀
18
PWRDN
4-BIT
DAC
THREE-
STATE
DRIVERS
VREF+
16
4-BIT
FLASH
ADC
(4LSB)
MAX152
TIMING AND CONTROL CIRCUITRY
D0-D7
DATA
OUT
PINS
2-5,
14-17
10 7 6 13 8 9 19
GND MODE WR/RDY CS RD INT VSS
TOP VIEW
VIN 1
D0 (LSB) 2
D1 3
D2 4
D3 5
WR/RDY 6
MODE 7
RD 8
INT 9
GND 10
MAX152
20 VDD
19 VSS
18 PWRDN
17 D7 (MSB)
16 D6
15 D5
14 D4
13 CS
12 VREF+
11 VREF-
DIP/SO/SSOP
________________________________________________________________ Maxim Integrated Products 1
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