DS8102+ Maxim Integrated Products, DS8102+ Datasheet

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DS8102+

Manufacturer Part Number
DS8102+
Description
IC MODULATOR/DECODER 16-TSSOP
Manufacturer
Maxim Integrated Products
Type
Modulatorr
Datasheet

Specifications of DS8102+

Applications
Energy Measurement
Mounting Type
Surface Mount
Package / Case
16-TSSOP
Duty Cycle (max)
40 % to 60 %
Input Voltage
3.3 V
Maximum Operating Temperature
+ 85 C
Minimum Operating Temperature
- 40 C
Output Voltage
0.4 V
Supply Current
3.5 mA
Lead Free Status / RoHS Status
Lead free / RoHS Compliant
Other names
90-08102+XPX
The DS8102 is a stand-alone, dual-channel, delta-
sigma modulator that converts measurements from two
differential analog input pairs into a Manchester-encod-
ed output bit stream that can be processed by a com-
panion microcontroller such as the MAXQ3108. One
channel operates at a fixed 1x gain, while the other
operates at a pin-selectable gain of 1x, 4x, 16x, or 32x.
The DS8102 includes an internal power-supply monitor,
on-board voltage reference, and low-power oscillator to
reduce the number of external components required for
data acquisition.
The Manchester-encoded output from the DS8102
combines pulse-density-modulated measurement val-
ues from both differential input channels with a syn-
chronization bit stream and is transmitted over a single
pin. This transmission scheme is ideal for split voltage
domain applications where the DS8102 and other “hot”-
side components must be electrically isolated from
“cold” low-voltage components such as a companion
microcontroller. In this type of application, the DS8102
can be capacitively coupled to a companion microcon-
troller with only two connection points required
(MNOUT and DGND).
The MAXQ3108 dual-core microcontroller, which
includes specialized Manchester bit-stream decoding
inputs and sinc3 filters, is specifically designed to act
as a companion microcontroller for up to three DS8102
devices. This configuration, which supports up to six
differential analog input channels, is well suited for
three-phase electricity-metering applications.
Rev 1; 2/09
Typical Operating Circuit appears at end of data sheet.
MAXQ is a registered trademark of Maxim Integrated Products, Inc.
For pricing, delivery, and ordering information, please contact Maxim Direct at 1-888-629-4642,
or visit Maxim’s website at www.maxim-ic.com.
Single-Phase Electricity Metering
Three-Phase Electricity Metering
Power-Line Conditioning
Electrochemical and Optical Sensors
Industrial Control
Data-Acquisition Systems and Data Loggers
Dual Delta-Sigma Modulator and Encoder
________________________________________________________________ Maxim Integrated Products
General Description
Applications
♦ Dual Delta-Sigma 2nd-Order Modulators
♦ Selectable Internal or External Voltage Reference
♦ Manchester-Encoded Bit Stream Output
♦ Selectable Internal or External Clock Source
♦ Integrated Low-Power 8MHz Oscillator
♦ Operating Mode
+ Denotes a lead(Pb)-free/RoHS-compliant package.
DS8102+
PART
Channel 0: Pin-Selectable Gain of 1x, 4x, 16x,
Channel 1: Fixed Gain of 1x
Includes Synchronization Bits to Allow Clock
Single-Pin Transmission Scheme Simplifies
Active Mode (8MHz, V
DGND
AGND
or 32x
Recovery
Electrical Isolation Using Capacitive Coupling
AN1+
AN0+
AN1-
AN0-
V
V
REF
DD
TOP VIEW
1
2
3
4
5
6
7
8
+
-40°C to +85°C
TEMP RANGE
Ordering Information
TSSOP
DS8102
DD
Pin Configuration
= 3.6V): 3.5mA
PIN-PACKAGE
16
15
14
13
12
11
10
9
Features
16 TSSOP
V
APDREF
RST
MNOUT
CLKIO
G1
G0
CLKSEL
DD
1

Related parts for DS8102+

DS8102+ Summary of contents

Page 1

... Includes Synchronization Bits to Allow Clock Recovery Single-Pin Transmission Scheme Simplifies Electrical Isolation Using Capacitive Coupling ♦ Selectable Internal or External Clock Source ♦ Integrated Low-Power 8MHz Oscillator ♦ Operating Mode Active Mode (8MHz, V PART DS8102+ + Denotes a lead(Pb)-free/RoHS-compliant package. TOP VIEW DGND Applications AGND V REF AN1- ...

Page 2

Dual Delta-Sigma Modulator and Encoder ABSOLUTE MAXIMUM RATINGS Voltage Range on V Relative to DGND.............-0.3V to +4.0V DD Voltage Range on V Relative to AGND .............-0.3V to +4.0V DD Voltage Range on AGND Relative to DGND .........-0.3V to +0.3V Voltage ...

Page 3

Dual Delta-Sigma Modulator and Encoder ELECTRICAL CHARACTERISTICS (continued 2.7V to 3.6V -40°C to +85° PARAMETER SYMBOL ANALOG-TO-DIGITAL CONVERTER DYNAMIC SPECIFICATIONS DC Power-Supply Rejection Ratio Signal-to-Noise Ratio SINAD Total Harmonic Distortion (to 21st Harmonic) ...

Page 4

Dual Delta-Sigma Modulator and Encoder PIN NAME 1 DGND Digital Ground 2 AGND Analog Ground Reference Voltage Input/Output. When APDREF = 0, the buffered internal voltage reference is driven this pin as an output and can be ...

Page 5

Dual Delta-Sigma Modulator and Encoder REFERENCE V REF AN1+ AN1- AN0+ AN0 Detailed Description Operating Modes The DS8102 has two operating modes: shutdown (or power-down) mode and active mode. In shutdown mode, the DS8102 inactive ...

Page 6

Dual Delta-Sigma Modulator and Encoder Once the power supply acceptable level (V > and the RST line is driven high, the DD RST DS8102 exits shutdown mode. However, a warmup sequence must then be completed ...

Page 7

Dual Delta-Sigma Modulator and Encoder Internal/External Voltage Reference The configuration pin APDREF selects whether the DS8102 uses its internal voltage reference or an exter- nal voltage reference provided at V ing conversions. If the internal voltage reference is selected, the ...

Page 8

Dual Delta-Sigma Modulator and Encoder ...

Page 9

... Maxim cannot assume responsibility for use of any circuitry other than circuitry entirely embodied in a Maxim product. No circuit patent licenses are implied. Maxim reserves the right to change the circuitry and specifications without notice at any time. Maxim Integrated Products, 120 San Gabriel Drive, Sunnyvale, CA 94086 408-737-7600 _____________________ 9 © 2009 Maxim Integrated Products DESCRIPTION from 12MHz to 8MHz ...

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